* [PATCH 4/4] [libc/musl] Add musl-libc support
2014-08-01 2:02 [PATCH 0/4] Update how threads are configured, and add musl-libc Bryan Hundven
2014-08-01 2:02 ` [PATCH 3/4] libc/mingw: threads are the native ones Bryan Hundven
2014-08-01 2:02 ` [PATCH 2/4] libc: libces are responsible for naming their threads implementation Bryan Hundven
@ 2014-08-01 2:02 ` Bryan Hundven
2014-08-08 21:21 ` Yann E. MORIN
2014-08-01 2:02 ` [PATCH 1/4] libc: rename the threads options Bryan Hundven
3 siblings, 1 reply; 7+ messages in thread
From: Bryan Hundven @ 2014-08-01 2:02 UTC (permalink / raw)
To: Yann E. MORIN; +Cc: crossgcc, Bryan Hundven
This patch adds initial support for musl-libc.
Musl-libc versions currently supported:
* 1.0.3 (Stable)
* 1.1.3 (Previous Mainline)
* 1.1.4 (Mainline)
Futher improvements are needed.
* gcc-4.9.x has issues (Might be fixed in musl-1.1.4).
* Multilib support is needed.
* Checks to make sure paths are correct.
* Move to 2-step gcc build. 3-step build is not necessary.
Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
---
config/libc/musl.in | 49 ++
patches/experimental/gcc/4.6.0/0001-musl.patch | 304 +++++++++
patches/experimental/gcc/4.8.0/0001-musl.patch | 401 +++++++++++
patches/experimental/gcc/4.8.1/0001-musl.patch | 626 +++++++++++++++++
patches/experimental/gcc/4.8.2/0001-musl.patch | 750 +++++++++++++++++++++
patches/experimental/gcc/4.8.3/0001-musl.patch | 736 ++++++++++++++++++++
patches/experimental/gcc/4.9.0/0001-musl.patch | 706 +++++++++++++++++++
.../musl/1.0.3/0001-fix_linker_regression.patch | 64 ++
.../1.0.3/0002-fix_mips_linker_regression.patch | 88 +++
.../musl/1.1.3/0001-fix_linker_regression.patch | 64 ++
.../1.1.3/0002-fix_mips_linker_regression.patch | 88 +++
scripts/build/arch/arm.sh | 1 +
scripts/build/libc/musl.sh | 128 ++++
scripts/functions | 1 +
14 files changed, 4006 insertions(+)
create mode 100644 config/libc/musl.in
create mode 100644 patches/experimental/gcc/4.6.0/0001-musl.patch
create mode 100644 patches/experimental/gcc/4.8.0/0001-musl.patch
create mode 100644 patches/experimental/gcc/4.8.1/0001-musl.patch
create mode 100644 patches/experimental/gcc/4.8.2/0001-musl.patch
create mode 100644 patches/experimental/gcc/4.8.3/0001-musl.patch
create mode 100644 patches/experimental/gcc/4.9.0/0001-musl.patch
create mode 100644 patches/musl/1.0.3/0001-fix_linker_regression.patch
create mode 100644 patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
create mode 100644 patches/musl/1.1.3/0001-fix_linker_regression.patch
create mode 100644 patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
create mode 100644 scripts/build/libc/musl.sh
diff --git a/config/libc/musl.in b/config/libc/musl.in
new file mode 100644
index 0000000..7bab480
--- /dev/null
+++ b/config/libc/musl.in
@@ -0,0 +1,49 @@
+# musl options
+
+## depends on ! WINDOWS && ! BARE_METAL
+##
+## select LIBC_SUPPORT_THREADS_NATIVE
+## select CC_CORE_PASSES_NEEDED
+##
+## help Musl is a new standard library to power a new generation of Linux-based
+## help devices. musl is lightweight, fast, simple, free, and strives to be
+## help correct in the sense of standards-conformance and safety.
+
+config THREADS
+ default "musl"
+
+choice
+ bool
+ prompt "musl version"
+# Don't remove next line
+# CT_INSERT_VERSION_BELOW
+
+config LIBC_MUSL_V_1_1_4
+ bool
+ prompt "1.1.4 (Mainline)"
+ depends on EXPERIMENTAL
+
+config LIBC_MUSL_V_1_1_3
+ bool
+ prompt "1.1.3"
+ depends on EXPERIMENTAL
+
+config LIBC_MUSL_V_1_0_3
+ bool
+ prompt "1.0.3 (Stable)"
+
+config LIBC_MUSL_V_CUSTOM
+ bool
+ prompt "Custom musl"
+ depends on EXPERIMENTAL
+
+endchoice
+
+config LIBC_VERSION
+ string
+# Don't remove next line
+# CT_INSERT_VERSION_STRING_BELOW
+ default "1.1.4" if LIBC_MUSL_V_1_1_4
+ default "1.1.3" if LIBC_MUSL_V_1_1_3
+ default "1.0.3" if LIBC_MUSL_V_1_0_3
+ default "custom" if LIBC_MUSL_V_CUSTOM
diff --git a/patches/experimental/gcc/4.6.0/0001-musl.patch b/patches/experimental/gcc/4.6.0/0001-musl.patch
new file mode 100644
index 0000000..b0b6c4b
--- /dev/null
+++ b/patches/experimental/gcc/4.6.0/0001-musl.patch
@@ -0,0 +1,304 @@
+diff --git a/patches/experimental/gcc/4.6.0/0001-musl.patch b/patches/experimental/gcc/4.6.0/0001-musl.patch
+new file mode 100644
+index 0000000..cee9948
+--- /dev/null
++++ b/patches/experimental/gcc/4.6.0/0001-musl.patch
+@@ -0,0 +1,231 @@
++diff --git a/config.sub b/config.sub
++--- a/config.sub
+++++ b/config.sub
++@@ -125,6 +125,7 @@ esac
++ maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
++ case $maybe_os in
++ nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
+++ linux-musl* | \
++ linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
++ knetbsd*-gnu* | netbsd*-gnu* | \
++ kopensolaris*-gnu* | \
++@@ -1310,6 +1311,7 @@ case $os in
++ | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
++ | -mingw32* | -linux-gnu* | -linux-android* \
++ | -linux-newlib* | -linux-uclibc* \
+++ | -linux-musl* \
++ | -uxpv* | -beos* | -mpeix* | -udk* \
++ | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
++ | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
++diff --git a/gcc/config.gcc b/gcc/config.gcc
++--- a/gcc/config.gcc
+++++ b/gcc/config.gcc
++@@ -478,7 +478,7 @@ case ${target} in
++ esac
++
++ # Common C libraries.
++-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
+++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
++
++ # Common parts for widely ported systems.
++ case ${target} in
++@@ -591,6 +591,9 @@ case ${target} in
++ *-*-*uclibc*)
++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
++ ;;
+++ *-*-*musl*)
+++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
+++ ;;
++ *)
++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
++ ;;
++diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
++--- a/gcc/config/arm/linux-eabi.h
+++++ b/gcc/config/arm/linux-eabi.h
++@@ -64,6 +64,10 @@
++ #undef GLIBC_DYNAMIC_LINKER
++ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
++
+++/* musl has no "classic" (i.e. broken) mode */
+++#undef MUSL_DYNAMIC_LINKER
+++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.so.1"
+++
++ /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
++ use the GNU/Linux version, not the generic BPABI version. */
++ #undef LINK_SPEC
++diff --git a/gcc/config/i386/linux.h b/gcc/config/i386/linux.h
++--- a/gcc/config/i386/linux.h
+++++ b/gcc/config/i386/linux.h
++@@ -93,6 +93,7 @@ along with GCC; see the file COPYING3. If not see
++ /* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
++ #define LINK_EMULATION "elf_i386"
++ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
+++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
++
++ #undef ASM_SPEC
++ #define ASM_SPEC \
++diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
++--- a/gcc/config/i386/linux64.h
+++++ b/gcc/config/i386/linux64.h
++@@ -65,6 +65,9 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
++ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
++ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
++
+++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
+++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
+++
++ #if TARGET_64BIT_DEFAULT
++ #define SPEC_32 "m32"
++ #define SPEC_64 "!m32"
++diff --git a/gcc/config/linux.h b/gcc/config/linux.h
++--- a/gcc/config/linux.h
+++++ b/gcc/config/linux.h
++@@ -33,10 +33,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
++ #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
++ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
++ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
+++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
++ #else
++ #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
++ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
++ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
+++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
++ #endif
++
++ #define LINUX_TARGET_OS_CPP_BUILTINS() \
++@@ -54,18 +56,21 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
++ uClibc or Bionic is the default C library and whether
++ -muclibc or -mglibc or -mbionic has been passed to change the default. */
++
++-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
++- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
+++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
+++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
++
++ #if DEFAULT_LIBC == LIBC_GLIBC
++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
++- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
+++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
+++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
++ #elif DEFAULT_LIBC == LIBC_UCLIBC
++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
++- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
+++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
+++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
++ #elif DEFAULT_LIBC == LIBC_BIONIC
++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
++- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
+++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
+++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
+++#elif DEFAULT_LIBC == LIBC_MUSL
+++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
+++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
++ #else
++ #error "Unsupported DEFAULT_LIBC"
++ #endif /* DEFAULT_LIBC */
++@@ -83,13 +88,13 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
++
++ #define LINUX_DYNAMIC_LINKER \
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
++- BIONIC_DYNAMIC_LINKER)
+++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
++ #define LINUX_DYNAMIC_LINKER32 \
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
++- BIONIC_DYNAMIC_LINKER32)
+++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
++ #define LINUX_DYNAMIC_LINKER64 \
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
++- BIONIC_DYNAMIC_LINKER64)
+++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
++
++ /* Determine whether the entire c99 runtime
++ is present in the runtime library. */
++diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
++--- a/gcc/config/linux.opt
+++++ b/gcc/config/linux.opt
++@@ -30,3 +30,7 @@ Use GNU C library
++ muclibc
++ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
++ Use uClibc C library
+++
+++mmusl
+++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
+++Use musl C library
++diff --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
++--- a/gcc/config/mips/linux.h
+++++ b/gcc/config/mips/linux.h
++@@ -63,6 +63,8 @@ along with GCC; see the file COPYING3. If not see
++
++ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++
+++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
+++
++ /* Borrowed from sparc/linux.h */
++ #undef LINK_SPEC
++ #define LINK_SPEC \
++diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
++--- a/gcc/ginclude/stddef.h
+++++ b/gcc/ginclude/stddef.h
++@@ -184,6 +184,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
++ #ifndef _GCC_SIZE_T
++ #ifndef _SIZET_
++ #ifndef __size_t
+++#ifndef __DEFINED_size_t /* musl */
++ #define __size_t__ /* BeOS */
++ #define __SIZE_T__ /* Cray Unicos/Mk */
++ #define _SIZE_T
++@@ -200,6 +201,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
++ #define ___int_size_t_h
++ #define _GCC_SIZE_T
++ #define _SIZET_
+++#define __DEFINED_size_t /* musl */
++ #if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
++ /* __size_t is a typedef on FreeBSD 5!, must not trash it. */
++ #else
++@@ -214,6 +216,7 @@ typedef __SIZE_TYPE__ size_t;
++ typedef long ssize_t;
++ #endif /* __BEOS__ */
++ #endif /* !(defined (__GNUG__) && defined (size_t)) */
+++#endif /* __DEFINED_size_t */
++ #endif /* __size_t */
++ #endif /* _SIZET_ */
++ #endif /* _GCC_SIZE_T */
++diff --git a/libgomp/config/posix/time.c b/libgomp/config/posix/time.c
++--- a/libgomp/config/posix/time.c
+++++ b/libgomp/config/posix/time.c
++@@ -28,6 +28,8 @@
++ The following implementation uses the most simple POSIX routines.
++ If present, POSIX 4 clocks should be used instead. */
++
+++#define _POSIX_C_SOURCE 199309L /* for clocks */
+++
++ #include "libgomp.h"
++ #include <unistd.h>
++ #if TIME_WITH_SYS_TIME
++diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
++--- a/libstdc++-v3/configure.host
+++++ b/libstdc++-v3/configure.host
++@@ -237,6 +237,13 @@ case "${host_os}" in
++ os_include_dir="os/bsd/freebsd"
++ ;;
++ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
+++ # check for musl by target
+++ case "${host_os}" in
+++ *-musl*)
+++ os_include_dir="os/generic"
+++ ;;
+++ *)
+++
++ if [ "$uclibc" = "yes" ]; then
++ os_include_dir="os/uclibc"
++ elif [ "$bionic" = "yes" ]; then
++@@ -245,6 +252,9 @@ case "${host_os}" in
++ os_include_dir="os/gnu-linux"
++ fi
++ ;;
+++
+++ esac
+++ ;;
++ hpux*)
++ os_include_dir="os/hpux"
++ ;;
+diff --git a/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch b/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch
+new file mode 100644
+index 0000000..e28232d
+--- /dev/null
++++ b/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch
+@@ -0,0 +1,12 @@
++--- musl-1.1.3.orig/include/signal.h 2014-07-27 20:24:56.194773074 +0300
+++++ musl-1.1.3/include/signal.h 2014-07-27 21:27:32.108772419 +0300
++@@ -246,6 +246,9 @@ typedef int sig_atomic_t;
++ void (*signal(int, void (*)(int)))(int);
++ int raise(int);
++
+++#define __SIGRTMIN 32
+++#define __SIGRTMAX (_NSIG - 1)
+++
++ #ifdef __cplusplus
++ }
++ #endif
+diff --git a/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch b/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch
+new file mode 100644
+index 0000000..a166cb5
+--- /dev/null
++++ b/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch
+@@ -0,0 +1,43 @@
++diff -Nupr musl-1.1.3.orig/include/ctype.h musl-1.1.3/include/ctype.h
++--- musl-1.1.3.orig/include/ctype.h 2014-07-30 10:06:03.630712195 +0300
+++++ musl-1.1.3/include/ctype.h 2014-07-30 10:06:51.238713586 +0300
++@@ -7,6 +7,39 @@ extern "C" {
++
++ #include <features.h>
++
+++#ifndef _ISbit
+++/* These are all the characteristics of characters.
+++ If there get to be more than 16 distinct characteristics,
+++ many things must be changed that use `unsigned short int's.
+++
+++ The characteristics are stored always in network byte order (big
+++ endian). We define the bit value interpretations here dependent on the
+++ machine's byte order. */
+++
+++# include <endian.h>
+++# if __BYTE_ORDER == __BIG_ENDIAN
+++# define _ISbit(bit) (1 << (bit))
+++# else /* __BYTE_ORDER == __LITTLE_ENDIAN */
+++# define _ISbit(bit) ((bit) < 8 ? ((1 << (bit)) << 8) : ((1 << (bit)) >> 8))
+++# endif
+++
+++enum
+++{
+++ _ISupper = _ISbit (0), /* UPPERCASE. */
+++ _ISlower = _ISbit (1), /* lowercase. */
+++ _ISalpha = _ISbit (2), /* Alphabetic. */
+++ _ISdigit = _ISbit (3), /* Numeric. */
+++ _ISxdigit = _ISbit (4), /* Hexadecimal numeric. */
+++ _ISspace = _ISbit (5), /* Whitespace. */
+++ _ISprint = _ISbit (6), /* Printing. */
+++ _ISgraph = _ISbit (7), /* Graphical. */
+++ _ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */
+++ _IScntrl = _ISbit (9), /* Control character. */
+++ _ISpunct = _ISbit (10), /* Punctuation. */
+++ _ISalnum = _ISbit (11) /* Alphanumeric. */
+++};
+++#endif /* ! _ISbit */
+++
++ int isalnum(int);
++ int isalpha(int);
++ int isblank(int);
diff --git a/patches/experimental/gcc/4.8.0/0001-musl.patch b/patches/experimental/gcc/4.8.0/0001-musl.patch
new file mode 100644
index 0000000..e250298
--- /dev/null
+++ b/patches/experimental/gcc/4.8.0/0001-musl.patch
@@ -0,0 +1,401 @@
+This patch enables support for musl-libc in gcc.
+
+This patch is not supported by crosstool-ng and was originally found here:
+ https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.0-musl.diff
+
+Added-By: Bryan Hundven <bryanhundven@gmail.com>
+---
+diff -r 6b1b8174ce29 gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h Fri Mar 29 16:41:20 2013 -0400
++++ b/gcc/config/arm/linux-eabi.h Fri Mar 29 16:41:23 2013 -0400
+@@ -77,6 +77,10 @@
+ %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
+ %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
+
++/* musl has no "classic" (i.e. broken) mode */
++#undef MUSL_DYNAMIC_LINKER
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
+ use the GNU/Linux version, not the generic BPABI version. */
+ #undef LINK_SPEC
+diff -r 6b1b8174ce29 libitm/config/arm/hwcap.cc
+--- a/libitm/config/arm/hwcap.cc Fri Mar 29 16:41:20 2013 -0400
++++ b/libitm/config/arm/hwcap.cc Fri Mar 29 16:41:23 2013 -0400
+@@ -40,7 +40,11 @@
+
+ #ifdef __linux__
+ #include <unistd.h>
++#ifdef __GLIBC__
+ #include <sys/fcntl.h>
++#else
++#include <fcntl.h>
++#endif
+ #include <elf.h>
+
+ static void __attribute__((constructor))
+# HG changeset patch
+# Parent 2b29df135cf04fe23c38301f6d0fc5796366aecf
+Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
+
+diff -r 2b29df135cf0 gcc/config.gcc
+--- a/gcc/config.gcc Fri Mar 29 16:41:11 2013 -0400
++++ b/gcc/config.gcc Fri Mar 29 16:41:14 2013 -0400
+@@ -549,7 +549,7 @@
+ esac
+
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+
+ # Common parts for widely ported systems.
+ case ${target} in
+@@ -652,6 +652,9 @@
+ *-*-*uclibc*)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+ ;;
++ *-*-*musl*)
++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++ ;;
+ *)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+ ;;
+diff -r 2b29df135cf0 gcc/config/linux.h
+--- a/gcc/config/linux.h Fri Mar 29 16:41:11 2013 -0400
++++ b/gcc/config/linux.h Fri Mar 29 16:41:14 2013 -0400
+@@ -32,10 +32,12 @@
+ #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
+ #endif
+
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
+@@ -53,18 +55,21 @@
+ uClibc or Bionic is the default C library and whether
+ -muclibc or -mglibc or -mbionic has been passed to change the default. */
+
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
+- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -84,16 +89,16 @@
+
+ #define GNU_USER_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
+- BIONIC_DYNAMIC_LINKER)
++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+- BIONIC_DYNAMIC_LINKER32)
++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+- BIONIC_DYNAMIC_LINKER64)
++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+- BIONIC_DYNAMIC_LINKERX32)
++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+
+ /* Determine whether the entire c99 runtime
+ is present in the runtime library. */
+diff -r 2b29df135cf0 gcc/config/linux.opt
+--- a/gcc/config/linux.opt Fri Mar 29 16:41:11 2013 -0400
++++ b/gcc/config/linux.opt Fri Mar 29 16:41:14 2013 -0400
+@@ -30,3 +30,7 @@
+ muclibc
+ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Use musl C library
+diff -r 2b29df135cf0 gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h Fri Mar 29 16:41:11 2013 -0400
++++ b/gcc/ginclude/stddef.h Fri Mar 29 16:41:14 2013 -0400
+@@ -181,6 +181,7 @@
+ #ifndef _GCC_SIZE_T
+ #ifndef _SIZET_
+ #ifndef __size_t
++#ifndef __DEFINED_size_t /* musl */
+ #define __size_t__ /* BeOS */
+ #define __SIZE_T__ /* Cray Unicos/Mk */
+ #define _SIZE_T
+@@ -197,6 +198,7 @@
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
+ || defined(__FreeBSD_kernel__)
+ /* __size_t is a typedef on FreeBSD 5, must not trash it. */
+@@ -214,6 +216,7 @@
+ typedef long ssize_t;
+ #endif /* __BEOS__ */
+ #endif /* !(defined (__GNUG__) && defined (size_t)) */
++#endif /* __DEFINED_size_t */
+ #endif /* __size_t */
+ #endif /* _SIZET_ */
+ #endif /* _GCC_SIZE_T */
+# HG changeset patch
+# Parent 2b94537ce2496c88e7e797c617e5b95e8d7e4785
+A fix for libgomp to correctly request a POSIX version for time support.
+
+diff -r 2b94537ce249 libgomp/config/posix/time.c
+--- a/libgomp/config/posix/time.c Fri Mar 29 16:41:14 2013 -0400
++++ b/libgomp/config/posix/time.c Fri Mar 29 16:41:17 2013 -0400
+@@ -28,6 +28,8 @@
+ The following implementation uses the most simple POSIX routines.
+ If present, POSIX 4 clocks should be used instead. */
+
++#define _POSIX_C_SOURCE 199309L /* for clocks */
++
+ #include "libgomp.h"
+ #include <unistd.h>
+ #if TIME_WITH_SYS_TIME
+# HG changeset patch
+# Parent f50bb54f331f73405131a30b4f353cfda1c70304
+Use the generic implementation of libstdc++ primitives when we're on musl, not the glibc one.
+
+diff -r f50bb54f331f libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host Fri Mar 29 16:38:52 2013 -0400
++++ b/libstdc++-v3/configure.host Fri Mar 29 16:41:10 2013 -0400
+@@ -264,6 +264,13 @@
+ os_include_dir="os/bsd/freebsd"
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++ # check for musl by target
++ case "${host_os}" in
++ *-musl*)
++ os_include_dir="os/generic"
++ ;;
++ *)
++
+ if [ "$uclibc" = "yes" ]; then
+ os_include_dir="os/uclibc"
+ elif [ "$bionic" = "yes" ]; then
+@@ -272,6 +279,9 @@
+ os_include_dir="os/gnu-linux"
+ fi
+ ;;
++
++ esac
++ ;;
+ hpux*)
+ os_include_dir="os/hpux"
+ ;;
+# HG changeset patch
+# Parent 62831d7bf931658019ba16092c48375177d014b1
+Support for mips-linux-musl.
+
+diff -r 62831d7bf931 gcc/config/mips/linux.h
+--- a/gcc/config/mips/linux.h Fri Mar 29 16:41:23 2013 -0400
++++ b/gcc/config/mips/linux.h Fri Mar 29 16:41:25 2013 -0400
+@@ -18,3 +18,5 @@
+ <http://www.gnu.org/licenses/>. */
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
+# HG changeset patch
+# Parent 2ffe76b215fdb082cbbc262536077627757fa9bf
+Support for powerpc-linux-musl.
+
+diff -r 2ffe76b215fd gcc/config.gcc
+--- a/gcc/config.gcc Fri Mar 29 16:41:26 2013 -0400
++++ b/gcc/config.gcc Fri Mar 29 16:41:28 2013 -0400
+@@ -2112,6 +2112,10 @@
+ powerpc*-*-linux*paired*)
+ tm_file="${tm_file} rs6000/750cl.h" ;;
+ esac
++ case ${target} in
++ *-linux*-musl*)
++ enable_secureplt=yes ;;
++ esac
+ if test x${enable_secureplt} = xyes; then
+ tm_file="rs6000/secureplt.h ${tm_file}"
+ fi
+diff -r 2ffe76b215fd gcc/config/rs6000/linux64.h
+--- a/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:26 2013 -0400
++++ b/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:28 2013 -0400
+@@ -364,17 +364,21 @@
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
+ #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+
+
+ #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
+diff -r 2ffe76b215fd gcc/config/rs6000/secureplt.h
+--- a/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:26 2013 -0400
++++ b/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:28 2013 -0400
+@@ -18,3 +18,4 @@
+ <http://www.gnu.org/licenses/>. */
+
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+diff -r 2ffe76b215fd gcc/config/rs6000/sysv4.h
+--- a/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:26 2013 -0400
++++ b/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:28 2013 -0400
+@@ -551,6 +551,9 @@
+ #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
+
+ /* Pass -G xxx to the compiler and set correct endian mode. */
+ #define CC1_SPEC "%{G*} %(cc1_cpu) \
+@@ -611,7 +614,8 @@
+ %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
+ %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
+ %{mcall-i960-old: --oformat elf32-powerpcle} \
+- }}}}"
++ }}}} \
++%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+
+ /* Any specific OS flags. */
+ #define LINK_OS_SPEC "\
+@@ -789,15 +793,18 @@
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+ %{rdynamic:-export-dynamic} \
+@@ -923,6 +930,7 @@
+ { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
+ { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
+ { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
+ { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
+ { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
+ { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
+diff -r 2ffe76b215fd libgcc/config/rs6000/linux-unwind.h
+--- a/libgcc/config/rs6000/linux-unwind.h Fri Mar 29 16:41:26 2013 -0400
++++ b/libgcc/config/rs6000/linux-unwind.h Fri Mar 29 16:41:28 2013 -0400
+@@ -258,6 +258,7 @@
+
+ return _URC_NO_REASON;
+ }
++#endif
+
+ #define MD_FROB_UPDATE_CONTEXT frob_update_context
+
+# HG changeset patch
+# Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
+Support for i386-linux-musl and x86_64-linux-musl.
+
+diff -r 3ea10cd626cb gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h Fri Mar 29 16:41:17 2013 -0400
++++ b/gcc/config/i386/linux.h Fri Mar 29 16:41:20 2013 -0400
+@@ -21,3 +21,4 @@
+
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+diff -r 3ea10cd626cb gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h Fri Mar 29 16:41:17 2013 -0400
++++ b/gcc/config/i386/linux64.h Fri Mar 29 16:41:20 2013 -0400
+@@ -30,3 +30,7 @@
+ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
++
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
+diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
+--- a/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:17 2013 -0400
++++ b/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:20 2013 -0400
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+ GLIBC has reserved words 10 through 13 for TM. */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+
+ #include "config/generic/tls.h"
+
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@
+
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+
+ #endif // LIBITM_X86_TLS_H
diff --git a/patches/experimental/gcc/4.8.1/0001-musl.patch b/patches/experimental/gcc/4.8.1/0001-musl.patch
new file mode 100644
index 0000000..2c1c0d3
--- /dev/null
+++ b/patches/experimental/gcc/4.8.1/0001-musl.patch
@@ -0,0 +1,626 @@
+This patch enables support for musl-libc in gcc.
+
+This patch is not supported by crosstool-ng and was originally found here:
+ https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.1-musl.diff
+
+Added-By: Bryan Hundven <bryanhundven@gmail.com>
+---
+diff -r f50bb54f331f libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host Fri Mar 29 16:38:52 2013 -0400
++++ b/libstdc++-v3/configure.host Fri Mar 29 16:41:10 2013 -0400
+@@ -264,6 +264,13 @@
+ os_include_dir="os/bsd/freebsd"
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++ # check for musl by target
++ case "${host_os}" in
++ *-musl*)
++ os_include_dir="os/generic"
++ ;;
++ *)
++
+ if [ "$uclibc" = "yes" ]; then
+ os_include_dir="os/uclibc"
+ elif [ "$bionic" = "yes" ]; then
+@@ -272,6 +279,9 @@
+ os_include_dir="os/gnu-linux"
+ fi
+ ;;
++
++ esac
++ ;;
+ hpux*)
+ os_include_dir="os/hpux"
+ ;;
+# HG changeset patch
+# Parent 572f7b4d1c50cefde3aa2c43d06040fc308ad989
+Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
+
+diff -r 572f7b4d1c50 gcc/config.gcc
+--- a/gcc/config.gcc Sun Sep 08 22:58:18 2013 -0400
++++ b/gcc/config.gcc Mon Sep 09 12:48:34 2013 -0400
+@@ -549,7 +549,7 @@
+ esac
+
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+
+ # Common parts for widely ported systems.
+ case ${target} in
+@@ -652,6 +652,9 @@
+ *-*-*uclibc*)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+ ;;
++ *-*-*musl*)
++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++ ;;
+ *)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+ ;;
+diff -r 572f7b4d1c50 gcc/config/linux.h
+--- a/gcc/config/linux.h Sun Sep 08 22:58:18 2013 -0400
++++ b/gcc/config/linux.h Mon Sep 09 12:48:34 2013 -0400
+@@ -32,10 +32,12 @@
+ #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
+ #endif
+
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
+@@ -53,18 +55,21 @@
+ uClibc or Bionic is the default C library and whether
+ -muclibc or -mglibc or -mbionic has been passed to change the default. */
+
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
+- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -84,21 +89,21 @@
+
+ #define GNU_USER_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
+- BIONIC_DYNAMIC_LINKER)
++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+- BIONIC_DYNAMIC_LINKER32)
++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+- BIONIC_DYNAMIC_LINKER64)
++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+- BIONIC_DYNAMIC_LINKERX32)
++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+
+ /* Determine whether the entire c99 runtime
+ is present in the runtime library. */
+ #undef TARGET_C99_FUNCTIONS
+-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
+
+ /* Whether we have sincos that follows the GNU extension. */
+ #undef TARGET_HAS_SINCOS
+@@ -107,3 +112,74 @@
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+ #define TARGET_HAS_BIONIC (OPTION_BIONIC)
++
++/* musl avoids problematic includes by rearranging the include directories.
++ * Unfortunately, this is mostly duplicated from cppdefault.c */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP \
++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS \
++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL \
++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS \
++ { \
++ INCLUDE_DEFAULTS_MUSL_GPP \
++ INCLUDE_DEFAULTS_MUSL_PREFIX \
++ INCLUDE_DEFAULTS_MUSL_CROSS \
++ INCLUDE_DEFAULTS_MUSL_TOOL \
++ INCLUDE_DEFAULTS_MUSL_NATIVE \
++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
++ { 0, 0, 0, 0, 0, 0 } \
++ }
++#endif
+diff -r 572f7b4d1c50 gcc/config/linux.opt
+--- a/gcc/config/linux.opt Sun Sep 08 22:58:18 2013 -0400
++++ b/gcc/config/linux.opt Mon Sep 09 12:48:34 2013 -0400
+@@ -30,3 +30,7 @@
+ muclibc
+ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Use musl C library
+diff -r 572f7b4d1c50 gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h Sun Sep 08 22:58:18 2013 -0400
++++ b/gcc/ginclude/stddef.h Mon Sep 09 12:48:34 2013 -0400
+@@ -181,6 +181,7 @@
+ #ifndef _GCC_SIZE_T
+ #ifndef _SIZET_
+ #ifndef __size_t
++#ifndef __DEFINED_size_t /* musl */
+ #define __size_t__ /* BeOS */
+ #define __SIZE_T__ /* Cray Unicos/Mk */
+ #define _SIZE_T
+@@ -197,6 +198,7 @@
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
+ || defined(__FreeBSD_kernel__)
+ /* __size_t is a typedef on FreeBSD 5, must not trash it. */
+@@ -214,6 +216,7 @@
+ typedef long ssize_t;
+ #endif /* __BEOS__ */
+ #endif /* !(defined (__GNUG__) && defined (size_t)) */
++#endif /* __DEFINED_size_t */
+ #endif /* __size_t */
+ #endif /* _SIZET_ */
+ #endif /* _GCC_SIZE_T */
+# HG changeset patch
+# Parent 2b94537ce2496c88e7e797c617e5b95e8d7e4785
+A fix for libgomp to correctly request a POSIX version for time support.
+
+diff -r 2b94537ce249 libgomp/config/posix/time.c
+--- a/libgomp/config/posix/time.c Fri Mar 29 16:41:14 2013 -0400
++++ b/libgomp/config/posix/time.c Fri Mar 29 16:41:17 2013 -0400
+@@ -28,6 +28,8 @@
+ The following implementation uses the most simple POSIX routines.
+ If present, POSIX 4 clocks should be used instead. */
+
++#define _POSIX_C_SOURCE 199309L /* for clocks */
++
+ #include "libgomp.h"
+ #include <unistd.h>
+ #if TIME_WITH_SYS_TIME
+diff -r 7cba4201a2ae libgcc/unwind-dw2-fde-dip.c
+--- a/libgcc/unwind-dw2-fde-dip.c Sat Jul 27 22:53:05 2013 -0400
++++ b/libgcc/unwind-dw2-fde-dip.c Sat Jul 27 22:57:08 2013 -0400
+@@ -46,33 +46,13 @@
+ #include "unwind-compat.h"
+ #include "gthr.h"
+
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
+- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
+ # define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__BIONIC__)
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__FreeBSD__) && __FreeBSD__ >= 7
+-# define ElfW __ElfN
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__OpenBSD__)
+-# define ElfW(type) Elf_##type
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(TARGET_DL_ITERATE_PHDR) \
+- && defined(__sun__) && defined(__svr4__)
+-# define USE_PT_GNU_EH_FRAME
++# ifdef __OpenBSD__
++# define ElfW(type) Elf_##typ
++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
++# define ElfW __ElfN
++# endif
+ #endif
+
+ #if defined(USE_PT_GNU_EH_FRAME)
+diff -r 75d9c38318a7 gcc/configure
+--- a/gcc/configure Tue Sep 24 06:52:49 2013 -0400
++++ b/gcc/configure Tue Sep 24 06:54:33 2013 -0400
+@@ -26736,6 +26736,9 @@
+ else
+ gcc_cv_libc_provides_ssp=no
+ case "$target" in
++ *-*-musl*)
++ # All versions of musl provide stack protector
++ gcc_cv_libc_provides_ssp=yes;;
+ *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+ # glibc 2.4 and later provides __stack_chk_fail and
+ # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -26769,6 +26772,7 @@
+ # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ # simply assert that glibc does provide this, which is true for all
+ # realistically usable GNU/Hurd configurations.
++ # All supported versions of musl provide it as well
+ gcc_cv_libc_provides_ssp=yes;;
+ *-*-darwin* | *-*-freebsd*)
+ ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
+@@ -26851,6 +26855,9 @@
+ gcc_cv_target_dl_iterate_phdr=no
+ fi
+ ;;
++ *-linux-musl*)
++ gcc_cv_target_dl_iterate_phdr=yes
++ ;;
+ esac
+
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+diff -r 75d9c38318a7 gcc/configure.ac
+--- a/gcc/configure.ac Tue Sep 24 06:52:49 2013 -0400
++++ b/gcc/configure.ac Tue Sep 24 06:54:33 2013 -0400
+@@ -4719,6 +4719,9 @@
+ gcc_cv_libc_provides_ssp,
+ [gcc_cv_libc_provides_ssp=no
+ case "$target" in
++ *-*-musl*)
++ # All versions of musl provide stack protector
++ gcc_cv_libc_provides_ssp=yes;;
+ *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+ [# glibc 2.4 and later provides __stack_chk_fail and
+ # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -4752,6 +4755,7 @@
+ # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ # simply assert that glibc does provide this, which is true for all
+ # realistically usable GNU/Hurd configurations.
++ # All supported versions of musl provide it as well
+ gcc_cv_libc_provides_ssp=yes;;
+ *-*-darwin* | *-*-freebsd*)
+ AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
+@@ -4817,6 +4821,9 @@
+ gcc_cv_target_dl_iterate_phdr=no
+ fi
+ ;;
++ *-linux-musl*)
++ gcc_cv_target_dl_iterate_phdr=yes
++ ;;
+ esac
+ GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+# HG changeset patch
+# Parent 94e435662aff38e86c9ca0dff4bbf451e0190b34
+Get rid of ever-broken fixincludes on musl.
+
+
+diff -r 94e435662aff -r e27957848dc8 fixincludes/mkfixinc.sh
+--- a/fixincludes/mkfixinc.sh Sat Jul 27 23:37:20 2013 -0400
++++ b/fixincludes/mkfixinc.sh Sat Jul 27 23:43:03 2013 -0400
+@@ -19,7 +19,8 @@
+ powerpc-*-eabi* | \
+ powerpc-*-rtems* | \
+ powerpcle-*-eabisim* | \
+- powerpcle-*-eabi* )
++ powerpcle-*-eabi* | \
++ *-musl* )
+ # IF there is no include fixing,
+ # THEN create a no-op fixer and exit
+ (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
+# HG changeset patch
+# Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
+Support for i386-linux-musl and x86_64-linux-musl.
+
+diff -r 3ea10cd626cb gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h Fri Mar 29 16:41:17 2013 -0400
++++ b/gcc/config/i386/linux.h Fri Mar 29 16:41:20 2013 -0400
+@@ -21,3 +21,4 @@
+
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+diff -r 3ea10cd626cb gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h Fri Mar 29 16:41:17 2013 -0400
++++ b/gcc/config/i386/linux64.h Fri Mar 29 16:41:20 2013 -0400
+@@ -30,3 +30,7 @@
+ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
++
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
+diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
+--- a/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:17 2013 -0400
++++ b/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:20 2013 -0400
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+ GLIBC has reserved words 10 through 13 for TM. */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+
+ #include "config/generic/tls.h"
+
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@
+
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+
+ #endif // LIBITM_X86_TLS_H
+# HG changeset patch
+# Parent c3eb69047e35491fda9cd9ab1ee2ace1299c793c
+Support for arm-linux-musl.
+
+diff -r c3eb69047e35 gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h Thu Sep 19 07:11:38 2013 -0400
++++ b/gcc/config/arm/linux-eabi.h Thu Sep 19 08:56:47 2013 -0400
+@@ -77,6 +77,23 @@
+ %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
+ %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
+
++/* For ARM musl currently supports four dynamic linkers:
++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
++ musl does not support the legacy OABI mode.
++ All the dynamic linkers live in /lib.
++ We default to soft-float, EL. */
++#undef MUSL_DYNAMIC_LINKER
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
++#endif
++#define MUSL_DYNAMIC_LINKER \
++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
+ use the GNU/Linux version, not the generic BPABI version. */
+ #undef LINK_SPEC
+diff -r c3eb69047e35 libitm/config/arm/hwcap.cc
+--- a/libitm/config/arm/hwcap.cc Thu Sep 19 07:11:38 2013 -0400
++++ b/libitm/config/arm/hwcap.cc Thu Sep 19 08:56:47 2013 -0400
+@@ -40,7 +40,11 @@
+
+ #ifdef __linux__
+ #include <unistd.h>
++#ifdef __GLIBC__
+ #include <sys/fcntl.h>
++#else
++#include <fcntl.h>
++#endif
+ #include <elf.h>
+
+ static void __attribute__((constructor))
+# HG changeset patch
+# Parent 4618ad6f036f1e944a5262ae5875dcdf62c41f8b
+Support for mips-linux-musl.
+
+diff -r 4618ad6f036f gcc/config/mips/linux.h
+--- a/gcc/config/mips/linux.h Thu Sep 19 08:56:47 2013 -0400
++++ b/gcc/config/mips/linux.h Thu Sep 19 09:08:11 2013 -0400
+@@ -18,3 +18,10 @@
+ <http://www.gnu.org/licenses/>. */
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++
++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
++#endif
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
+# HG changeset patch
+# Parent 2ffe76b215fdb082cbbc262536077627757fa9bf
+Support for powerpc-linux-musl.
+
+diff -r 2ffe76b215fd gcc/config.gcc
+--- a/gcc/config.gcc Fri Mar 29 16:41:26 2013 -0400
++++ b/gcc/config.gcc Fri Mar 29 16:41:28 2013 -0400
+@@ -2112,6 +2112,10 @@
+ powerpc*-*-linux*paired*)
+ tm_file="${tm_file} rs6000/750cl.h" ;;
+ esac
++ case ${target} in
++ *-linux*-musl*)
++ enable_secureplt=yes ;;
++ esac
+ if test x${enable_secureplt} = xyes; then
+ tm_file="rs6000/secureplt.h ${tm_file}"
+ fi
+diff -r 2ffe76b215fd gcc/config/rs6000/linux64.h
+--- a/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:26 2013 -0400
++++ b/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:28 2013 -0400
+@@ -364,17 +364,21 @@
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
+ #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+
+
+ #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
+diff -r 2ffe76b215fd gcc/config/rs6000/secureplt.h
+--- a/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:26 2013 -0400
++++ b/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:28 2013 -0400
+@@ -18,3 +18,4 @@
+ <http://www.gnu.org/licenses/>. */
+
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+diff -r 2ffe76b215fd gcc/config/rs6000/sysv4.h
+--- a/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:26 2013 -0400
++++ b/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:28 2013 -0400
+@@ -551,6 +551,9 @@
+ #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
+
+ /* Pass -G xxx to the compiler and set correct endian mode. */
+ #define CC1_SPEC "%{G*} %(cc1_cpu) \
+@@ -611,7 +614,8 @@
+ %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
+ %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
+ %{mcall-i960-old: --oformat elf32-powerpcle} \
+- }}}}"
++ }}}} \
++%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+
+ /* Any specific OS flags. */
+ #define LINK_OS_SPEC "\
+@@ -789,15 +793,18 @@
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+ %{rdynamic:-export-dynamic} \
+@@ -923,6 +930,7 @@
+ { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
+ { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
+ { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
+ { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
+ { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
+ { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
+--- a/gcc/config/aarch64/aarch64-linux.h 2013-01-10 21:38:27.000000000 +0100
++++ b/gcc/config/aarch64/aarch64-linux.h 2013-09-12 21:39:34.004829498 +0200
+@@ -21,7 +21,11 @@
+ #ifndef GCC_AARCH64_LINUX_H
+ #define GCC_AARCH64_LINUX_H
+
++/* The AArch64 port currently supports two dynamic linkers:
++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
+
+ #define LINUX_TARGET_LINK_SPEC "%{h*} \
+ %{static:-Bstatic} \
diff --git a/patches/experimental/gcc/4.8.2/0001-musl.patch b/patches/experimental/gcc/4.8.2/0001-musl.patch
new file mode 100644
index 0000000..3ff2e30
--- /dev/null
+++ b/patches/experimental/gcc/4.8.2/0001-musl.patch
@@ -0,0 +1,750 @@
+This patch enables support for musl-libc in gcc.
+
+This patch is not supported by crosstool-ng and was originally found here:
+ https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.2-musl.diff
+
+Added-By: Bryan Hundven <bryanhundven@gmail.com>
+---
+diff -r df1a439b9058 libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host Tue Dec 31 14:52:24 2013 -0500
++++ b/libstdc++-v3/configure.host Tue Dec 31 14:54:49 2013 -0500
+@@ -264,6 +264,13 @@
+ os_include_dir="os/bsd/freebsd"
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++ # check for musl by target
++ case "${host_os}" in
++ *-musl*)
++ os_include_dir="os/generic"
++ ;;
++ *)
++
+ if [ "$uclibc" = "yes" ]; then
+ os_include_dir="os/uclibc"
+ elif [ "$bionic" = "yes" ]; then
+@@ -272,6 +279,9 @@
+ os_include_dir="os/gnu-linux"
+ fi
+ ;;
++
++ esac
++ ;;
+ hpux*)
+ os_include_dir="os/hpux"
+ ;;
+# HG changeset patch
+# Parent e5b4564f249f8634194bdabef4b3057d0e54ee97
+Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
+
+diff -r e5b4564f249f gcc/config.gcc
+--- a/gcc/config.gcc Tue Dec 31 14:54:49 2013 -0500
++++ b/gcc/config.gcc Tue Dec 31 14:54:52 2013 -0500
+@@ -550,7 +550,7 @@
+ esac
+
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+
+ # Common parts for widely ported systems.
+ case ${target} in
+@@ -653,6 +653,9 @@
+ *-*-*uclibc*)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+ ;;
++ *-*-*musl*)
++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++ ;;
+ *)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+ ;;
+diff -r e5b4564f249f gcc/config/linux.h
+--- a/gcc/config/linux.h Tue Dec 31 14:54:49 2013 -0500
++++ b/gcc/config/linux.h Tue Dec 31 14:54:52 2013 -0500
+@@ -32,10 +32,12 @@
+ #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
+ #endif
+
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
+@@ -53,18 +55,21 @@
+ uClibc or Bionic is the default C library and whether
+ -muclibc or -mglibc or -mbionic has been passed to change the default. */
+
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
+- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -84,21 +89,21 @@
+
+ #define GNU_USER_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
+- BIONIC_DYNAMIC_LINKER)
++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+- BIONIC_DYNAMIC_LINKER32)
++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+- BIONIC_DYNAMIC_LINKER64)
++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+- BIONIC_DYNAMIC_LINKERX32)
++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+
+ /* Determine whether the entire c99 runtime
+ is present in the runtime library. */
+ #undef TARGET_C99_FUNCTIONS
+-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
+
+ /* Whether we have sincos that follows the GNU extension. */
+ #undef TARGET_HAS_SINCOS
+@@ -107,3 +112,74 @@
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+ #define TARGET_HAS_BIONIC (OPTION_BIONIC)
++
++/* musl avoids problematic includes by rearranging the include directories.
++ * Unfortunately, this is mostly duplicated from cppdefault.c */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP \
++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS \
++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL \
++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS \
++ { \
++ INCLUDE_DEFAULTS_MUSL_GPP \
++ INCLUDE_DEFAULTS_MUSL_PREFIX \
++ INCLUDE_DEFAULTS_MUSL_CROSS \
++ INCLUDE_DEFAULTS_MUSL_TOOL \
++ INCLUDE_DEFAULTS_MUSL_NATIVE \
++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
++ { 0, 0, 0, 0, 0, 0 } \
++ }
++#endif
+diff -r e5b4564f249f gcc/config/linux.opt
+--- a/gcc/config/linux.opt Tue Dec 31 14:54:49 2013 -0500
++++ b/gcc/config/linux.opt Tue Dec 31 14:54:52 2013 -0500
+@@ -30,3 +30,7 @@
+ muclibc
+ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Use musl C library
+diff -r e5b4564f249f gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h Tue Dec 31 14:54:49 2013 -0500
++++ b/gcc/ginclude/stddef.h Tue Dec 31 14:54:52 2013 -0500
+@@ -181,6 +181,7 @@
+ #ifndef _GCC_SIZE_T
+ #ifndef _SIZET_
+ #ifndef __size_t
++#ifndef __DEFINED_size_t /* musl */
+ #define __size_t__ /* BeOS */
+ #define __SIZE_T__ /* Cray Unicos/Mk */
+ #define _SIZE_T
+@@ -197,6 +198,7 @@
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
+ || defined(__FreeBSD_kernel__)
+ /* __size_t is a typedef on FreeBSD 5, must not trash it. */
+@@ -214,6 +216,7 @@
+ typedef long ssize_t;
+ #endif /* __BEOS__ */
+ #endif /* !(defined (__GNUG__) && defined (size_t)) */
++#endif /* __DEFINED_size_t */
+ #endif /* __size_t */
+ #endif /* _SIZET_ */
+ #endif /* _GCC_SIZE_T */
+# HG changeset patch
+# Parent e08e44e39f5edde422f444487422046147d5821e
+A fix for libgomp to correctly request a POSIX version for time support.
+
+diff -r e08e44e39f5e libgomp/config/posix/time.c
+--- a/libgomp/config/posix/time.c Tue Dec 31 14:54:52 2013 -0500
++++ b/libgomp/config/posix/time.c Tue Dec 31 14:54:55 2013 -0500
+@@ -28,6 +28,8 @@
+ The following implementation uses the most simple POSIX routines.
+ If present, POSIX 4 clocks should be used instead. */
+
++#define _POSIX_C_SOURCE 199309L /* for clocks */
++
+ #include "libgomp.h"
+ #include <unistd.h>
+ #if TIME_WITH_SYS_TIME
+diff -r 809c85574bfe libgcc/unwind-dw2-fde-dip.c
+--- a/libgcc/unwind-dw2-fde-dip.c Tue Dec 31 14:54:55 2013 -0500
++++ b/libgcc/unwind-dw2-fde-dip.c Tue Dec 31 14:54:58 2013 -0500
+@@ -46,33 +46,13 @@
+ #include "unwind-compat.h"
+ #include "gthr.h"
+
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
+- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
+ # define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__BIONIC__)
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__FreeBSD__) && __FreeBSD__ >= 7
+-# define ElfW __ElfN
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__OpenBSD__)
+-# define ElfW(type) Elf_##type
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(TARGET_DL_ITERATE_PHDR) \
+- && defined(__sun__) && defined(__svr4__)
+-# define USE_PT_GNU_EH_FRAME
++# ifdef __OpenBSD__
++# define ElfW(type) Elf_##type
++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
++# define ElfW __ElfN
++# endif
+ #endif
+
+ #if defined(USE_PT_GNU_EH_FRAME)
+diff -r 03604918697c gcc/configure
+--- a/gcc/configure Tue Dec 31 14:54:58 2013 -0500
++++ b/gcc/configure Tue Dec 31 14:55:01 2013 -0500
+@@ -26739,6 +26739,9 @@
+ else
+ gcc_cv_libc_provides_ssp=no
+ case "$target" in
++ *-*-musl*)
++ # All versions of musl provide stack protector
++ gcc_cv_libc_provides_ssp=yes;;
+ *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+ # glibc 2.4 and later provides __stack_chk_fail and
+ # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -26772,6 +26775,7 @@
+ # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ # simply assert that glibc does provide this, which is true for all
+ # realistically usable GNU/Hurd configurations.
++ # All supported versions of musl provide it as well
+ gcc_cv_libc_provides_ssp=yes;;
+ *-*-darwin* | *-*-freebsd*)
+ ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
+@@ -26854,6 +26858,9 @@
+ gcc_cv_target_dl_iterate_phdr=no
+ fi
+ ;;
++ *-linux-musl*)
++ gcc_cv_target_dl_iterate_phdr=yes
++ ;;
+ esac
+
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+diff -r 03604918697c gcc/configure.ac
+--- a/gcc/configure.ac Tue Dec 31 14:54:58 2013 -0500
++++ b/gcc/configure.ac Tue Dec 31 14:55:01 2013 -0500
+@@ -4722,6 +4722,9 @@
+ gcc_cv_libc_provides_ssp,
+ [gcc_cv_libc_provides_ssp=no
+ case "$target" in
++ *-*-musl*)
++ # All versions of musl provide stack protector
++ gcc_cv_libc_provides_ssp=yes;;
+ *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+ [# glibc 2.4 and later provides __stack_chk_fail and
+ # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -4755,6 +4758,7 @@
+ # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ # simply assert that glibc does provide this, which is true for all
+ # realistically usable GNU/Hurd configurations.
++ # All supported versions of musl provide it as well
+ gcc_cv_libc_provides_ssp=yes;;
+ *-*-darwin* | *-*-freebsd*)
+ AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
+@@ -4820,6 +4824,9 @@
+ gcc_cv_target_dl_iterate_phdr=no
+ fi
+ ;;
++ *-linux-musl*)
++ gcc_cv_target_dl_iterate_phdr=yes
++ ;;
+ esac
+ GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+# HG changeset patch
+# Parent 600a8a422ccaf5627ad1f5a138e7398df2b9e9d8
+Get rid of ever-broken fixincludes on musl.
+
+diff -r 600a8a422cca fixincludes/mkfixinc.sh
+--- a/fixincludes/mkfixinc.sh Tue Dec 31 14:55:01 2013 -0500
++++ b/fixincludes/mkfixinc.sh Tue Dec 31 14:55:04 2013 -0500
+@@ -19,7 +19,8 @@
+ powerpc-*-eabi* | \
+ powerpc-*-rtems* | \
+ powerpcle-*-eabisim* | \
+- powerpcle-*-eabi* )
++ powerpcle-*-eabi* | \
++ *-musl* )
+ # IF there is no include fixing,
+ # THEN create a no-op fixer and exit
+ (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
+# HG changeset patch
+# Parent 4696c3bf3d913eca88e9385ea9717541dfe1e033
+Support for i386-linux-musl and x86_64-linux-musl.
+
+diff -r 4696c3bf3d91 gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h Tue Dec 31 14:55:04 2013 -0500
++++ b/gcc/config/i386/linux.h Tue Dec 31 14:55:08 2013 -0500
+@@ -21,3 +21,4 @@
+
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+diff -r 4696c3bf3d91 gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h Tue Dec 31 14:55:04 2013 -0500
++++ b/gcc/config/i386/linux64.h Tue Dec 31 14:55:08 2013 -0500
+@@ -30,3 +30,7 @@
+ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
++
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
+diff -r 4696c3bf3d91 libitm/config/linux/x86/tls.h
+--- a/libitm/config/linux/x86/tls.h Tue Dec 31 14:55:04 2013 -0500
++++ b/libitm/config/linux/x86/tls.h Tue Dec 31 14:55:08 2013 -0500
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+ GLIBC has reserved words 10 through 13 for TM. */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+
+ #include "config/generic/tls.h"
+
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@
+
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+
+ #endif // LIBITM_X86_TLS_H
+# HG changeset patch
+# Parent 6738fd6f6fcc2a72f2ba527bda3325642af26885
+Support for arm-linux-musl.
+
+diff -r 6738fd6f6fcc gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h Tue Dec 31 14:55:08 2013 -0500
++++ b/gcc/config/arm/linux-eabi.h Tue Dec 31 14:55:11 2013 -0500
+@@ -77,6 +77,23 @@
+ %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
+ %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
+
++/* For ARM musl currently supports four dynamic linkers:
++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
++ musl does not support the legacy OABI mode.
++ All the dynamic linkers live in /lib.
++ We default to soft-float, EL. */
++#undef MUSL_DYNAMIC_LINKER
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
++#endif
++#define MUSL_DYNAMIC_LINKER \
++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
+ use the GNU/Linux version, not the generic BPABI version. */
+ #undef LINK_SPEC
+diff -r 6738fd6f6fcc libitm/config/arm/hwcap.cc
+--- a/libitm/config/arm/hwcap.cc Tue Dec 31 14:55:08 2013 -0500
++++ b/libitm/config/arm/hwcap.cc Tue Dec 31 14:55:11 2013 -0500
+@@ -40,7 +40,11 @@
+
+ #ifdef __linux__
+ #include <unistd.h>
++#ifdef __GLIBC__
+ #include <sys/fcntl.h>
++#else
++#include <fcntl.h>
++#endif
+ #include <elf.h>
+
+ static void __attribute__((constructor))
+# HG changeset patch
+# Parent 7d7383f638705a01fdc18e0e7e0c9cdb6387fc5d
+Support for mips-linux-musl.
+
+diff -r 7d7383f63870 gcc/config/mips/linux.h
+--- a/gcc/config/mips/linux.h Tue Dec 31 14:55:11 2013 -0500
++++ b/gcc/config/mips/linux.h Tue Dec 31 14:55:14 2013 -0500
+@@ -18,3 +18,10 @@
+ <http://www.gnu.org/licenses/>. */
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++
++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
++#endif
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
+# HG changeset patch
+# Parent 89df6d7e91c686da676ce27ef9b9d10522810c26
+Support for powerpc-linux-musl.
+
+diff -r 89df6d7e91c6 gcc/config.gcc
+--- a/gcc/config.gcc Tue Dec 31 14:55:14 2013 -0500
++++ b/gcc/config.gcc Tue Dec 31 14:55:17 2013 -0500
+@@ -2117,6 +2117,10 @@
+ powerpc*-*-linux*paired*)
+ tm_file="${tm_file} rs6000/750cl.h" ;;
+ esac
++ case ${target} in
++ *-linux*-musl*)
++ enable_secureplt=yes ;;
++ esac
+ if test x${enable_secureplt} = xyes; then
+ tm_file="rs6000/secureplt.h ${tm_file}"
+ fi
+diff -r 89df6d7e91c6 gcc/config/rs6000/linux64.h
+--- a/gcc/config/rs6000/linux64.h Tue Dec 31 14:55:14 2013 -0500
++++ b/gcc/config/rs6000/linux64.h Tue Dec 31 14:55:17 2013 -0500
+@@ -354,17 +354,21 @@
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
+ #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+
+ #undef DEFAULT_ASM_ENDIAN
+ #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+diff -r 89df6d7e91c6 gcc/config/rs6000/secureplt.h
+--- a/gcc/config/rs6000/secureplt.h Tue Dec 31 14:55:14 2013 -0500
++++ b/gcc/config/rs6000/secureplt.h Tue Dec 31 14:55:17 2013 -0500
+@@ -18,3 +18,4 @@
+ <http://www.gnu.org/licenses/>. */
+
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+diff -r 89df6d7e91c6 gcc/config/rs6000/sysv4.h
+--- a/gcc/config/rs6000/sysv4.h Tue Dec 31 14:55:14 2013 -0500
++++ b/gcc/config/rs6000/sysv4.h Tue Dec 31 14:55:17 2013 -0500
+@@ -550,6 +550,9 @@
+ #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
+
+ /* Pass -G xxx to the compiler and set correct endian mode. */
+ #define CC1_SPEC "%{G*} %(cc1_cpu)" \
+@@ -600,7 +603,8 @@
+
+ /* Override the default target of the linker. */
+ #define LINK_TARGET_SPEC \
+- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+
+ /* Any specific OS flags. */
+ #define LINK_OS_SPEC "\
+@@ -778,15 +782,18 @@
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+ %{rdynamic:-export-dynamic} \
+@@ -912,6 +919,7 @@
+ { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
+ { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
+ { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
+ { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
+ { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
+ { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
+diff -r d7ce17b2f2d6 gcc/config/aarch64/aarch64-linux.h
+--- a/gcc/config/aarch64/aarch64-linux.h Tue Dec 31 14:55:17 2013 -0500
++++ b/gcc/config/aarch64/aarch64-linux.h Tue Dec 31 14:55:20 2013 -0500
+@@ -21,7 +21,11 @@
+ #ifndef GCC_AARCH64_LINUX_H
+ #define GCC_AARCH64_LINUX_H
+
++/* The AArch64 port currently supports two dynamic linkers:
++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
+
+ #define CPP_SPEC "%{pthread:-D_REENTRANT}"
+
+# HG changeset patch
+# Parent f2601e4063d0d58d8ab04185e8baefd560d09496
+Microblaze support (again).
+
+
+diff -r f2601e4063d0 -r 0736dfe1aa0d gcc/config/microblaze/linux.h
+--- a/gcc/config/microblaze/linux.h Tue Dec 31 14:55:20 2013 -0500
++++ b/gcc/config/microblaze/linux.h Tue Dec 31 15:09:52 2013 -0500
+@@ -25,7 +25,22 @@
+ #undef TLS_NEEDS_GOT
+ #define TLS_NEEDS_GOT 1
+
+-#define DYNAMIC_LINKER "/lib/ld.so.1"
++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
++#endif
++
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++
++#if DEFAULT_LIBC == LIBC_MUSL
++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
++#else
++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
++#endif
++
++
+ #undef SUBTARGET_EXTRA_SPECS
+ #define SUBTARGET_EXTRA_SPECS \
+ { "dynamic_linker", DYNAMIC_LINKER }
+From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
+From: David Holsgrove <david.holsgrove@xilinx.com>
+Date: Fri, 28 Sep 2012 16:32:03 +1000
+Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
+ microblaze.h
+
+Fixes warnings like;
+
+warning: format '%zX' expects argument of type 'size_t',
+but argument 3 has type 'unsigned int' [-Wformat]
+
+Changelog
+
+2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
+
+ * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
+ and PTRDIFF_TYPE.
+
+Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
+---
+ gcc/config/microblaze/microblaze.h | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff --git a/gcc/config/microblaze/microblaze.h b/gcc/config/microblaze/microblaze.h
+index 19cdfed..e772a3f 100644
+--- a/gcc/config/microblaze/microblaze.h
++++ b/gcc/config/microblaze/microblaze.h
+@@ -213,6 +213,12 @@ extern enum pipeline_type microblaze_pipe;
+ #define STRICT_ALIGNMENT 1
+ #define PCC_BITFIELD_TYPE_MATTERS 1
+
++#undef SIZE_TYPE
++#define SIZE_TYPE "unsigned int"
++
++#undef PTRDIFF_TYPE
++#define PTRDIFF_TYPE "int"
++
+ #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
+ ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
+ && (ALIGN) < BITS_PER_WORD \
+--
+1.7.9.5
+
+--- gcc-4.8.2.org/gcc/config/sh/linux.h
++++ gcc-4.8.2/gcc/config/sh/linux.h
+@@ -43,7 +43,14 @@
+
+ #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
++#define MUSL_DYNAMIC_LINKER_E "eb"
++#else
++#define MUSL_DYNAMIC_LINKER_E
++#endif
++
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
+
+ #undef SUBTARGET_LINK_EMUL_SUFFIX
+ #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
+--- gcc-4.8.2.org/gcc/config/sh/sh.c
++++ gcc-4.8.2/gcc/config/sh/sh.c
+@@ -22,8 +22,17 @@
+ /* FIXME: This is a temporary hack, so that we can include <algorithm>
+ below. <algorithm> will try to include <cstdlib> which will reference
+ malloc & co, which are poisoned by "system.h". The proper solution is
+- to include <cstdlib> in "system.h" instead of <stdlib.h>. */
++ to include <cstdlib> in "system.h" instead of <stdlib.h>.
++ It's also a temporary hack as the inclusion of sstream will cause inclusion
++ of libc's pthread.h (istream->ios->ios_base->atomicity->gth->gthr-default)
++ which in turn includes sched.h, which defines the CPU_ALLOC, which uses
++ the poisoned calloc. the proper fix would be to shield the poison pragmas
++ with some define that is only set when gcc developers do testing.
++*/
+ #include <cstdlib>
++#include <sstream>
++#include <vector>
++#include <algorithm>
+
+ #include "config.h"
+ #include "system.h"
+@@ -59,10 +68,6 @@
+ #include "alloc-pool.h"
+ #include "tm-constrs.h"
+ #include "opts.h"
+-
+-#include <sstream>
+-#include <vector>
+-#include <algorithm>
+
+ int code_for_indirect_jump_scratch = CODE_FOR_indirect_jump_scratch;
+
diff --git a/patches/experimental/gcc/4.8.3/0001-musl.patch b/patches/experimental/gcc/4.8.3/0001-musl.patch
new file mode 100644
index 0000000..3e23402
--- /dev/null
+++ b/patches/experimental/gcc/4.8.3/0001-musl.patch
@@ -0,0 +1,736 @@
+This patch enables support for musl-libc in gcc.
+
+This patch is not supported by crosstool-ng and was originally found here:
+ https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.3-musl.diff
+
+Added-By: Bryan Hundven <bryanhundven@gmail.com>
+---
+diff -r 3265a3936a0f libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host Tue May 27 17:11:50 2014 -0400
++++ b/libstdc++-v3/configure.host Tue May 27 17:18:49 2014 -0400
+@@ -264,6 +264,13 @@
+ os_include_dir="os/bsd/freebsd"
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++ # check for musl by target
++ case "${host_os}" in
++ *-musl*)
++ os_include_dir="os/generic"
++ ;;
++ *)
++
+ if [ "$uclibc" = "yes" ]; then
+ os_include_dir="os/uclibc"
+ elif [ "$bionic" = "yes" ]; then
+@@ -272,6 +279,9 @@
+ os_include_dir="os/gnu-linux"
+ fi
+ ;;
++
++ esac
++ ;;
+ hpux*)
+ os_include_dir="os/hpux"
+ ;;
+# HG changeset patch
+# Parent feba6705f7e390f69e474a7c761a0eb7add7d414
+Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
+
+diff -r feba6705f7e3 gcc/config.gcc
+--- a/gcc/config.gcc Tue May 27 17:18:49 2014 -0400
++++ b/gcc/config.gcc Tue May 27 17:18:52 2014 -0400
+@@ -550,7 +550,7 @@
+ esac
+
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+
+ # Common parts for widely ported systems.
+ case ${target} in
+@@ -653,6 +653,9 @@
+ *-*-*uclibc*)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+ ;;
++ *-*-*musl*)
++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++ ;;
+ *)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+ ;;
+diff -r feba6705f7e3 gcc/config/linux.h
+--- a/gcc/config/linux.h Tue May 27 17:18:49 2014 -0400
++++ b/gcc/config/linux.h Tue May 27 17:18:52 2014 -0400
+@@ -32,10 +32,12 @@
+ #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
+ #endif
+
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
+@@ -53,18 +55,21 @@
+ uClibc or Bionic is the default C library and whether
+ -muclibc or -mglibc or -mbionic has been passed to change the default. */
+
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
+- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -84,21 +89,21 @@
+
+ #define GNU_USER_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
+- BIONIC_DYNAMIC_LINKER)
++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+- BIONIC_DYNAMIC_LINKER32)
++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+- BIONIC_DYNAMIC_LINKER64)
++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+- BIONIC_DYNAMIC_LINKERX32)
++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+
+ /* Determine whether the entire c99 runtime
+ is present in the runtime library. */
+ #undef TARGET_C99_FUNCTIONS
+-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
+
+ /* Whether we have sincos that follows the GNU extension. */
+ #undef TARGET_HAS_SINCOS
+@@ -107,3 +112,74 @@
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+ #define TARGET_HAS_BIONIC (OPTION_BIONIC)
++
++/* musl avoids problematic includes by rearranging the include directories.
++ * Unfortunately, this is mostly duplicated from cppdefault.c */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP \
++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS \
++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL \
++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS \
++ { \
++ INCLUDE_DEFAULTS_MUSL_GPP \
++ INCLUDE_DEFAULTS_MUSL_PREFIX \
++ INCLUDE_DEFAULTS_MUSL_CROSS \
++ INCLUDE_DEFAULTS_MUSL_TOOL \
++ INCLUDE_DEFAULTS_MUSL_NATIVE \
++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
++ { 0, 0, 0, 0, 0, 0 } \
++ }
++#endif
+diff -r feba6705f7e3 gcc/config/linux.opt
+--- a/gcc/config/linux.opt Tue May 27 17:18:49 2014 -0400
++++ b/gcc/config/linux.opt Tue May 27 17:18:52 2014 -0400
+@@ -30,3 +30,7 @@
+ muclibc
+ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Use musl C library
+diff -r feba6705f7e3 gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h Tue May 27 17:18:49 2014 -0400
++++ b/gcc/ginclude/stddef.h Tue May 27 17:18:52 2014 -0400
+@@ -181,6 +181,7 @@
+ #ifndef _GCC_SIZE_T
+ #ifndef _SIZET_
+ #ifndef __size_t
++#ifndef __DEFINED_size_t /* musl */
+ #define __size_t__ /* BeOS */
+ #define __SIZE_T__ /* Cray Unicos/Mk */
+ #define _SIZE_T
+@@ -197,6 +198,7 @@
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
+ || defined(__FreeBSD_kernel__)
+ /* __size_t is a typedef on FreeBSD 5, must not trash it. */
+@@ -214,6 +216,7 @@
+ typedef long ssize_t;
+ #endif /* __BEOS__ */
+ #endif /* !(defined (__GNUG__) && defined (size_t)) */
++#endif /* __DEFINED_size_t */
+ #endif /* __size_t */
+ #endif /* _SIZET_ */
+ #endif /* _GCC_SIZE_T */
+# HG changeset patch
+# Parent 77fd601051c4644b37838a8e5305c6971feab94f
+A fix for libgomp to correctly request a POSIX version for time support.
+
+diff -r 77fd601051c4 libgomp/config/posix/time.c
+--- a/libgomp/config/posix/time.c Tue May 27 17:18:52 2014 -0400
++++ b/libgomp/config/posix/time.c Tue May 27 17:18:55 2014 -0400
+@@ -28,6 +28,8 @@
+ The following implementation uses the most simple POSIX routines.
+ If present, POSIX 4 clocks should be used instead. */
+
++#define _POSIX_C_SOURCE 199309L /* for clocks */
++
+ #include "libgomp.h"
+ #include <unistd.h>
+ #if TIME_WITH_SYS_TIME
+diff -r abebeb8818d8 libgcc/unwind-dw2-fde-dip.c
+--- a/libgcc/unwind-dw2-fde-dip.c Tue May 27 17:18:55 2014 -0400
++++ b/libgcc/unwind-dw2-fde-dip.c Tue May 27 17:18:58 2014 -0400
+@@ -46,33 +46,13 @@
+ #include "unwind-compat.h"
+ #include "gthr.h"
+
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
+- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
+ # define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__BIONIC__)
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__FreeBSD__) && __FreeBSD__ >= 7
+-# define ElfW __ElfN
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__OpenBSD__)
+-# define ElfW(type) Elf_##type
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(TARGET_DL_ITERATE_PHDR) \
+- && defined(__sun__) && defined(__svr4__)
+-# define USE_PT_GNU_EH_FRAME
++# ifdef __OpenBSD__
++# define ElfW(type) Elf_##type
++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
++# define ElfW __ElfN
++# endif
+ #endif
+
+ #if defined(USE_PT_GNU_EH_FRAME)
+diff -r 68e6894cdeea gcc/configure
+--- a/gcc/configure Tue May 27 17:18:58 2014 -0400
++++ b/gcc/configure Tue May 27 17:19:01 2014 -0400
+@@ -26821,6 +26821,9 @@
+ else
+ gcc_cv_libc_provides_ssp=no
+ case "$target" in
++ *-*-musl*)
++ # All versions of musl provide stack protector
++ gcc_cv_libc_provides_ssp=yes;;
+ *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+ # glibc 2.4 and later provides __stack_chk_fail and
+ # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -26854,6 +26857,7 @@
+ # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ # simply assert that glibc does provide this, which is true for all
+ # realistically usable GNU/Hurd configurations.
++ # All supported versions of musl provide it as well
+ gcc_cv_libc_provides_ssp=yes;;
+ *-*-darwin* | *-*-freebsd*)
+ ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
+@@ -26936,6 +26940,9 @@
+ gcc_cv_target_dl_iterate_phdr=no
+ fi
+ ;;
++ *-linux-musl*)
++ gcc_cv_target_dl_iterate_phdr=yes
++ ;;
+ esac
+
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+diff -r 68e6894cdeea gcc/configure.ac
+--- a/gcc/configure.ac Tue May 27 17:18:58 2014 -0400
++++ b/gcc/configure.ac Tue May 27 17:19:01 2014 -0400
+@@ -4750,6 +4750,9 @@
+ gcc_cv_libc_provides_ssp,
+ [gcc_cv_libc_provides_ssp=no
+ case "$target" in
++ *-*-musl*)
++ # All versions of musl provide stack protector
++ gcc_cv_libc_provides_ssp=yes;;
+ *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+ [# glibc 2.4 and later provides __stack_chk_fail and
+ # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -4783,6 +4786,7 @@
+ # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ # simply assert that glibc does provide this, which is true for all
+ # realistically usable GNU/Hurd configurations.
++ # All supported versions of musl provide it as well
+ gcc_cv_libc_provides_ssp=yes;;
+ *-*-darwin* | *-*-freebsd*)
+ AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
+@@ -4848,6 +4852,9 @@
+ gcc_cv_target_dl_iterate_phdr=no
+ fi
+ ;;
++ *-linux-musl*)
++ gcc_cv_target_dl_iterate_phdr=yes
++ ;;
+ esac
+ GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+# HG changeset patch
+# Parent 5e0be25b469181f67d89382c7da201510c229f90
+Get rid of ever-broken fixincludes on musl.
+
+diff -r 5e0be25b4691 fixincludes/mkfixinc.sh
+--- a/fixincludes/mkfixinc.sh Tue May 27 17:19:01 2014 -0400
++++ b/fixincludes/mkfixinc.sh Tue May 27 17:19:04 2014 -0400
+@@ -19,7 +19,8 @@
+ powerpc-*-eabi* | \
+ powerpc-*-rtems* | \
+ powerpcle-*-eabisim* | \
+- powerpcle-*-eabi* )
++ powerpcle-*-eabi* | \
++ *-musl* )
+ # IF there is no include fixing,
+ # THEN create a no-op fixer and exit
+ (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
+# HG changeset patch
+# Parent dd2004fbd61c182919b800cec63806060b4228e5
+Support for i386-linux-musl and x86_64-linux-musl.
+
+diff -r dd2004fbd61c gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h Tue May 27 17:19:04 2014 -0400
++++ b/gcc/config/i386/linux.h Tue May 27 17:19:07 2014 -0400
+@@ -21,3 +21,4 @@
+
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+diff -r dd2004fbd61c gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h Tue May 27 17:19:04 2014 -0400
++++ b/gcc/config/i386/linux64.h Tue May 27 17:19:07 2014 -0400
+@@ -30,3 +30,7 @@
+ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
++
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
+diff -r dd2004fbd61c libitm/config/linux/x86/tls.h
+--- a/libitm/config/linux/x86/tls.h Tue May 27 17:19:04 2014 -0400
++++ b/libitm/config/linux/x86/tls.h Tue May 27 17:19:07 2014 -0400
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+ GLIBC has reserved words 10 through 13 for TM. */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+
+ #include "config/generic/tls.h"
+
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@
+
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+
+ #endif // LIBITM_X86_TLS_H
+# HG changeset patch
+# Parent 42eeea84a212601568b5a6d17eb28cfba4b45e1d
+Support for arm-linux-musl.
+
+diff -r 42eeea84a212 gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h Tue May 27 17:19:07 2014 -0400
++++ b/gcc/config/arm/linux-eabi.h Tue May 27 17:19:11 2014 -0400
+@@ -77,6 +77,23 @@
+ %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
+ %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
+
++/* For ARM musl currently supports four dynamic linkers:
++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
++ musl does not support the legacy OABI mode.
++ All the dynamic linkers live in /lib.
++ We default to soft-float, EL. */
++#undef MUSL_DYNAMIC_LINKER
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
++#endif
++#define MUSL_DYNAMIC_LINKER \
++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
+ use the GNU/Linux version, not the generic BPABI version. */
+ #undef LINK_SPEC
+diff -r 42eeea84a212 libitm/config/arm/hwcap.cc
+--- a/libitm/config/arm/hwcap.cc Tue May 27 17:19:07 2014 -0400
++++ b/libitm/config/arm/hwcap.cc Tue May 27 17:19:11 2014 -0400
+@@ -40,7 +40,11 @@
+
+ #ifdef __linux__
+ #include <unistd.h>
++#ifdef __GLIBC__
+ #include <sys/fcntl.h>
++#else
++#include <fcntl.h>
++#endif
+ #include <elf.h>
+
+ static void __attribute__((constructor))
+# HG changeset patch
+# Parent fae0f2a79418e010ac48deb6dc84b16524158f4d
+Support for mips-linux-musl.
+
+diff -r fae0f2a79418 gcc/config/mips/linux.h
+--- a/gcc/config/mips/linux.h Tue May 27 17:19:10 2014 -0400
++++ b/gcc/config/mips/linux.h Tue May 27 17:19:14 2014 -0400
+@@ -18,3 +18,10 @@
+ <http://www.gnu.org/licenses/>. */
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++
++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
++#endif
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
+# HG changeset patch
+# Parent 5f732d28ac6e18a515050808509c12a97a63af48
+Support for powerpc-linux-musl.
+
+diff -r 5f732d28ac6e gcc/config.gcc
+--- a/gcc/config.gcc Tue May 27 17:19:13 2014 -0400
++++ b/gcc/config.gcc Tue May 27 17:19:17 2014 -0400
+@@ -2138,6 +2138,10 @@
+ powerpc*-*-linux*paired*)
+ tm_file="${tm_file} rs6000/750cl.h" ;;
+ esac
++ case ${target} in
++ *-linux*-musl*)
++ enable_secureplt=yes ;;
++ esac
+ if test x${enable_secureplt} = xyes; then
+ tm_file="rs6000/secureplt.h ${tm_file}"
+ fi
+diff -r 5f732d28ac6e gcc/config/rs6000/linux64.h
+--- a/gcc/config/rs6000/linux64.h Tue May 27 17:19:13 2014 -0400
++++ b/gcc/config/rs6000/linux64.h Tue May 27 17:19:17 2014 -0400
+@@ -374,17 +374,21 @@
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+
+ #undef DEFAULT_ASM_ENDIAN
+ #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+diff -r 5f732d28ac6e gcc/config/rs6000/secureplt.h
+--- a/gcc/config/rs6000/secureplt.h Tue May 27 17:19:13 2014 -0400
++++ b/gcc/config/rs6000/secureplt.h Tue May 27 17:19:17 2014 -0400
+@@ -18,3 +18,4 @@
+ <http://www.gnu.org/licenses/>. */
+
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+diff -r 5f732d28ac6e gcc/config/rs6000/sysv4.h
+--- a/gcc/config/rs6000/sysv4.h Tue May 27 17:19:13 2014 -0400
++++ b/gcc/config/rs6000/sysv4.h Tue May 27 17:19:17 2014 -0400
+@@ -537,6 +537,9 @@
+ #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
+
+ /* Pass -G xxx to the compiler. */
+ #define CC1_SPEC "%{G*} %(cc1_cpu)" \
+@@ -585,7 +588,8 @@
+
+ /* Override the default target of the linker. */
+ #define LINK_TARGET_SPEC \
+- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+
+ /* Any specific OS flags. */
+ #define LINK_OS_SPEC "\
+@@ -763,15 +767,18 @@
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+ %{rdynamic:-export-dynamic} \
+@@ -894,6 +901,7 @@
+ { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
+ { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
+ { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
+ { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
+ { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
+ { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
+diff -r 4d2277f95a50 gcc/config/aarch64/aarch64-linux.h
+--- a/gcc/config/aarch64/aarch64-linux.h Tue May 27 17:19:17 2014 -0400
++++ b/gcc/config/aarch64/aarch64-linux.h Tue May 27 17:19:20 2014 -0400
+@@ -21,7 +21,11 @@
+ #ifndef GCC_AARCH64_LINUX_H
+ #define GCC_AARCH64_LINUX_H
+
++/* The AArch64 port currently supports two dynamic linkers:
++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
+
+ #define CPP_SPEC "%{pthread:-D_REENTRANT}"
+
+# HG changeset patch
+# Parent 11f8f95e9940bff12445f189dae33a4a8074ed1a
+Microblaze support (again).
+
+diff -r 11f8f95e9940 gcc/config/microblaze/linux.h
+--- a/gcc/config/microblaze/linux.h Tue May 27 17:19:20 2014 -0400
++++ b/gcc/config/microblaze/linux.h Tue May 27 17:19:23 2014 -0400
+@@ -25,7 +25,22 @@
+ #undef TLS_NEEDS_GOT
+ #define TLS_NEEDS_GOT 1
+
+-#define DYNAMIC_LINKER "/lib/ld.so.1"
++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
++#endif
++
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++
++#if DEFAULT_LIBC == LIBC_MUSL
++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
++#else
++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
++#endif
++
++
+ #undef SUBTARGET_EXTRA_SPECS
+ #define SUBTARGET_EXTRA_SPECS \
+ { "dynamic_linker", DYNAMIC_LINKER }
+From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
+From: David Holsgrove <david.holsgrove@xilinx.com>
+Date: Fri, 28 Sep 2012 16:32:03 +1000
+Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
+ microblaze.h
+
+Fixes warnings like;
+
+warning: format '%zX' expects argument of type 'size_t',
+but argument 3 has type 'unsigned int' [-Wformat]
+
+Changelog
+
+2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
+
+ * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
+ and PTRDIFF_TYPE.
+
+Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
+---
+ gcc/config/microblaze/microblaze.h | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff -r 2af2905d4b10 gcc/config/microblaze/microblaze.h
+--- a/gcc/config/microblaze/microblaze.h Tue May 27 17:19:22 2014 -0400
++++ b/gcc/config/microblaze/microblaze.h Tue May 27 17:19:26 2014 -0400
+@@ -219,6 +219,12 @@
+ #undef PTRDIFF_TYPE
+ #define PTRDIFF_TYPE "int"
+
++#undef SIZE_TYPE
++#define SIZE_TYPE "unsigned int"
++
++#undef PTRDIFF_TYPE
++#define PTRDIFF_TYPE "int"
++
+ #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
+ ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
+ && (ALIGN) < BITS_PER_WORD \
+diff -Nur gcc-4.8.3.orig/gcc/config/microblaze/microblaze.md gcc-4.8.3/gcc/config/microblaze/microblaze.md
+--- gcc-4.8.3.orig/gcc/config/microblaze/microblaze.md 2014-02-23 19:59:26.000000000 +0100
++++ gcc-4.8.3/gcc/config/microblaze/microblaze.md 2014-05-31 20:39:29.978608468 +0200
+@@ -1119,18 +1119,6 @@
+ }
+ )
+
+-;;Load and store reverse
+-(define_insn "movsi4_rev"
+- [(set (match_operand:SI 0 "reg_or_mem_operand" "=r,Q")
+- (bswap:SI (match_operand:SF 1 "reg_or_mem_operand" "Q,r")))]
+- "TARGET_REORDER"
+- "@
+- lwr\t%0,%y1,r0
+- swr\t%1,%y0,r0"
+- [(set_attr "type" "load,store")
+- (set_attr "mode" "SI")
+- (set_attr "length" "4,4")])
+-
+ ;; 32-bit floating point moves
+
+ (define_expand "movsf"
+diff -r 596e2430c627 gcc/config/sh/linux.h
+--- a/gcc/config/sh/linux.h Fri Sep 28 16:32:03 2012 +1000
++++ b/gcc/config/sh/linux.h Tue May 27 17:19:29 2014 -0400
+@@ -43,7 +43,14 @@
+
+ #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
++#define MUSL_DYNAMIC_LINKER_E "eb"
++#else
++#define MUSL_DYNAMIC_LINKER_E
++#endif
++
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
+
+ #undef SUBTARGET_LINK_EMUL_SUFFIX
+ #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
diff --git a/patches/experimental/gcc/4.9.0/0001-musl.patch b/patches/experimental/gcc/4.9.0/0001-musl.patch
new file mode 100644
index 0000000..de6f532
--- /dev/null
+++ b/patches/experimental/gcc/4.9.0/0001-musl.patch
@@ -0,0 +1,706 @@
+This patch enables support for musl-libc in gcc.
+
+This patch is not supported by crosstool-ng and was originally found here:
+ https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.9.0-musl.diff
+
+Added-By: Bryan Hundven <bryanhundven@gmail.com>
+---
+diff -r 2f9df662aaab libstdc++-v3/configure.host
+--- a/libstdc++-v3/configure.host Tue May 20 11:00:21 2014 -0400
++++ b/libstdc++-v3/configure.host Tue May 20 11:05:42 2014 -0400
+@@ -264,6 +264,13 @@
+ os_include_dir="os/bsd/freebsd"
+ ;;
+ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
++ # check for musl by target
++ case "${host_os}" in
++ *-musl*)
++ os_include_dir="os/generic"
++ ;;
++ *)
++
+ if [ "$uclibc" = "yes" ]; then
+ os_include_dir="os/uclibc"
+ elif [ "$bionic" = "yes" ]; then
+@@ -272,6 +279,9 @@
+ os_include_dir="os/gnu-linux"
+ fi
+ ;;
++
++ esac
++ ;;
+ hpux*)
+ os_include_dir="os/hpux"
+ ;;
+# HG changeset patch
+# Parent b6f4ce05a3155dbcbc06d72aebdb67e2f8abc094
+Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
+
+diff -r b6f4ce05a315 gcc/config.gcc
+--- a/gcc/config.gcc Tue May 20 11:05:42 2014 -0400
++++ b/gcc/config.gcc Tue May 20 11:05:45 2014 -0400
+@@ -594,7 +594,7 @@
+ esac
+
+ # Common C libraries.
+-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
+
+ # 32-bit x86 processors supported by --with-arch=. Each processor
+ # MUST be separated by exactly one space.
+@@ -719,6 +719,9 @@
+ *-*-*uclibc*)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
+ ;;
++ *-*-*musl*)
++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
++ ;;
+ *)
+ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
+ ;;
+diff -r b6f4ce05a315 gcc/config/linux.h
+--- a/gcc/config/linux.h Tue May 20 11:05:42 2014 -0400
++++ b/gcc/config/linux.h Tue May 20 11:05:45 2014 -0400
+@@ -32,10 +32,12 @@
+ #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
+ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
+ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
+ #else
+ #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
+ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
+ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
+ #endif
+
+ #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
+@@ -53,18 +55,21 @@
+ uClibc or Bionic is the default C library and whether
+ -muclibc or -mglibc or -mbionic has been passed to change the default. */
+
+-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
+- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
+
+ #if DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
+ #elif DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
+ #elif DEFAULT_LIBC == LIBC_BIONIC
+-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
+- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif /* DEFAULT_LIBC */
+@@ -84,21 +89,92 @@
+
+ #define GNU_USER_DYNAMIC_LINKER \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
+- BIONIC_DYNAMIC_LINKER)
++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+ #define GNU_USER_DYNAMIC_LINKER32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
+- BIONIC_DYNAMIC_LINKER32)
++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
+- BIONIC_DYNAMIC_LINKER64)
++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+ #define GNU_USER_DYNAMIC_LINKERX32 \
+ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
+- BIONIC_DYNAMIC_LINKERX32)
++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
+
+ /* Whether we have Bionic libc runtime */
+ #undef TARGET_HAS_BIONIC
+ #define TARGET_HAS_BIONIC (OPTION_BIONIC)
+
++/* musl avoids problematic includes by rearranging the include directories.
++ * Unfortunately, this is mostly duplicated from cppdefault.c */
++#if DEFAULT_LIBC == LIBC_MUSL
++#define INCLUDE_DEFAULTS_MUSL_GPP \
++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
++
++#ifdef LOCAL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_LOCAL
++#endif
++
++#ifdef PREFIX_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_PREFIX
++#endif
++
++#ifdef CROSS_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_CROSS \
++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#ifdef TOOL_INCLUDE_DIR
++#define INCLUDE_DEFAULTS_MUSL_TOOL \
++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
++#else
++#define INCLUDE_DEFAULTS_MUSL_TOOL
++#endif
++
++#ifdef NATIVE_SYSTEM_HEADER_DIR
++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
++#else
++#define INCLUDE_DEFAULTS_MUSL_NATIVE
++#endif
++
++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
++# define INCLUDE_DEFAULTS_MUSL_LOCAL
++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
++# define INCLUDE_DEFAULTS_MUSL_NATIVE
++#else
++# undef INCLUDE_DEFAULTS_MUSL_CROSS
++# define INCLUDE_DEFAULTS_MUSL_CROSS
++#endif
++
++#undef INCLUDE_DEFAULTS
++#define INCLUDE_DEFAULTS \
++ { \
++ INCLUDE_DEFAULTS_MUSL_GPP \
++ INCLUDE_DEFAULTS_MUSL_PREFIX \
++ INCLUDE_DEFAULTS_MUSL_CROSS \
++ INCLUDE_DEFAULTS_MUSL_TOOL \
++ INCLUDE_DEFAULTS_MUSL_NATIVE \
++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
++ { 0, 0, 0, 0, 0, 0 } \
++ }
++#endif
++
+ #if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
+ /* This is a *uclinux* target. We don't define below macros to normal linux
+ versions, because doing so would require *uclinux* targets to include
+diff -r b6f4ce05a315 gcc/config/linux.opt
+--- a/gcc/config/linux.opt Tue May 20 11:05:42 2014 -0400
++++ b/gcc/config/linux.opt Tue May 20 11:05:45 2014 -0400
+@@ -30,3 +30,7 @@
+ muclibc
+ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
+ Use uClibc C library
++
++mmusl
++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
++Use musl C library
+diff -r b6f4ce05a315 gcc/ginclude/stddef.h
+--- a/gcc/ginclude/stddef.h Tue May 20 11:05:42 2014 -0400
++++ b/gcc/ginclude/stddef.h Tue May 20 11:05:45 2014 -0400
+@@ -181,6 +181,7 @@
+ #ifndef _GCC_SIZE_T
+ #ifndef _SIZET_
+ #ifndef __size_t
++#ifndef __DEFINED_size_t /* musl */
+ #define __size_t__ /* BeOS */
+ #define __SIZE_T__ /* Cray Unicos/Mk */
+ #define _SIZE_T
+@@ -197,6 +198,7 @@
+ #define ___int_size_t_h
+ #define _GCC_SIZE_T
+ #define _SIZET_
++#define __DEFINED_size_t /* musl */
+ #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
+ || defined(__FreeBSD_kernel__)
+ /* __size_t is a typedef on FreeBSD 5, must not trash it. */
+@@ -214,6 +216,7 @@
+ typedef long ssize_t;
+ #endif /* __BEOS__ */
+ #endif /* !(defined (__GNUG__) && defined (size_t)) */
++#endif /* __DEFINED_size_t */
+ #endif /* __size_t */
+ #endif /* _SIZET_ */
+ #endif /* _GCC_SIZE_T */
+# HG changeset patch
+# Parent 65d595ef9fc3cdbbde4894d927593f1b0f5bbcb7
+A fix for libgomp to correctly request a POSIX version for time support.
+
+diff -r 65d595ef9fc3 libgomp/config/posix/time.c
+--- a/libgomp/config/posix/time.c Tue May 20 11:05:45 2014 -0400
++++ b/libgomp/config/posix/time.c Tue May 20 11:05:48 2014 -0400
+@@ -28,6 +28,8 @@
+ The following implementation uses the most simple POSIX routines.
+ If present, POSIX 4 clocks should be used instead. */
+
++#define _POSIX_C_SOURCE 199309L /* for clocks */
++
+ #include "libgomp.h"
+ #include <unistd.h>
+ #if TIME_WITH_SYS_TIME
+diff -r 95f4f1d7668b libgcc/unwind-dw2-fde-dip.c
+--- a/libgcc/unwind-dw2-fde-dip.c Tue May 20 11:05:48 2014 -0400
++++ b/libgcc/unwind-dw2-fde-dip.c Tue May 20 11:05:52 2014 -0400
+@@ -46,33 +46,13 @@
+ #include "unwind-compat.h"
+ #include "gthr.h"
+
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
+- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
+ # define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__BIONIC__)
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__FreeBSD__) && __FreeBSD__ >= 7
+-# define ElfW __ElfN
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(__OpenBSD__)
+-# define ElfW(type) Elf_##type
+-# define USE_PT_GNU_EH_FRAME
+-#endif
+-
+-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
+- && defined(TARGET_DL_ITERATE_PHDR) \
+- && defined(__sun__) && defined(__svr4__)
+-# define USE_PT_GNU_EH_FRAME
++# ifdef __OpenBSD__
++# define ElfW(type) Elf_##type
++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
++# define ElfW __ElfN
++# endif
+ #endif
+
+ #if defined(USE_PT_GNU_EH_FRAME)
+diff -r ff03fa61c6b3 gcc/configure
+--- a/gcc/configure Tue May 20 11:05:51 2014 -0400
++++ b/gcc/configure Tue May 20 11:05:55 2014 -0400
+@@ -27300,6 +27300,9 @@
+ else
+ gcc_cv_libc_provides_ssp=no
+ case "$target" in
++ *-*-musl*)
++ # All versions of musl provide stack protector
++ gcc_cv_libc_provides_ssp=yes;;
+ *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+ # glibc 2.4 and later provides __stack_chk_fail and
+ # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -27332,6 +27335,7 @@
+ # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ # simply assert that glibc does provide this, which is true for all
+ # realistically usable GNU/Hurd configurations.
++ # All supported versions of musl provide it as well
+ gcc_cv_libc_provides_ssp=yes;;
+ *-*-darwin* | *-*-freebsd*)
+ ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
+@@ -27421,6 +27425,9 @@
+ gcc_cv_target_dl_iterate_phdr=no
+ fi
+ ;;
++ *-linux-musl*)
++ gcc_cv_target_dl_iterate_phdr=yes
++ ;;
+ esac
+
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+diff -r ff03fa61c6b3 gcc/configure.ac
+--- a/gcc/configure.ac Tue May 20 11:05:51 2014 -0400
++++ b/gcc/configure.ac Tue May 20 11:05:55 2014 -0400
+@@ -5001,6 +5001,9 @@
+ gcc_cv_libc_provides_ssp,
+ [gcc_cv_libc_provides_ssp=no
+ case "$target" in
++ *-*-musl*)
++ # All versions of musl provide stack protector
++ gcc_cv_libc_provides_ssp=yes;;
+ *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
+ # glibc 2.4 and later provides __stack_chk_fail and
+ # either __stack_chk_guard, or TLS access to stack guard canary.
+@@ -5027,6 +5030,7 @@
+ # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
+ # simply assert that glibc does provide this, which is true for all
+ # realistically usable GNU/Hurd configurations.
++ # All supported versions of musl provide it as well
+ gcc_cv_libc_provides_ssp=yes;;
+ *-*-darwin* | *-*-freebsd*)
+ AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
+@@ -5093,6 +5097,9 @@
+ gcc_cv_target_dl_iterate_phdr=no
+ fi
+ ;;
++ *-linux-musl*)
++ gcc_cv_target_dl_iterate_phdr=yes
++ ;;
+ esac
+ GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
+ if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
+# HG changeset patch
+# Parent 26f591b9e77e3df3d0f772b840bd9c13ec24bd4c
+Get rid of ever-broken fixincludes on musl.
+
+diff -r 26f591b9e77e fixincludes/mkfixinc.sh
+--- a/fixincludes/mkfixinc.sh Tue May 20 11:05:55 2014 -0400
++++ b/fixincludes/mkfixinc.sh Tue May 20 11:05:58 2014 -0400
+@@ -19,7 +19,8 @@
+ powerpc-*-eabi* | \
+ powerpc-*-rtems* | \
+ powerpcle-*-eabisim* | \
+- powerpcle-*-eabi* )
++ powerpcle-*-eabi* | \
++ *-musl* )
+ # IF there is no include fixing,
+ # THEN create a no-op fixer and exit
+ (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
+# HG changeset patch
+# Parent bc117c35705fcc39396c19af046101411f251161
+Support for i386-linux-musl and x86_64-linux-musl.
+
+diff -r bc117c35705f gcc/config/i386/linux.h
+--- a/gcc/config/i386/linux.h Tue May 20 11:05:58 2014 -0400
++++ b/gcc/config/i386/linux.h Tue May 20 11:06:01 2014 -0400
+@@ -21,3 +21,4 @@
+
+ #define GNU_USER_LINK_EMULATION "elf_i386"
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
+diff -r bc117c35705f gcc/config/i386/linux64.h
+--- a/gcc/config/i386/linux64.h Tue May 20 11:05:58 2014 -0400
++++ b/gcc/config/i386/linux64.h Tue May 20 11:06:01 2014 -0400
+@@ -30,3 +30,7 @@
+ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
+ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
+ #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
++
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
+diff -r bc117c35705f libitm/config/linux/x86/tls.h
+--- a/libitm/config/linux/x86/tls.h Tue May 20 11:05:58 2014 -0400
++++ b/libitm/config/linux/x86/tls.h Tue May 20 11:06:01 2014 -0400
+@@ -25,16 +25,19 @@
+ #ifndef LIBITM_X86_TLS_H
+ #define LIBITM_X86_TLS_H 1
+
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ /* Use slots in the TCB head rather than __thread lookups.
+ GLIBC has reserved words 10 through 13 for TM. */
+ #define HAVE_ARCH_GTM_THREAD 1
+ #define HAVE_ARCH_GTM_THREAD_DISP 1
+ #endif
++#endif
+
+ #include "config/generic/tls.h"
+
+-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
++#if defined(__GLIBC_PREREQ)
++#if __GLIBC_PREREQ(2, 10)
+ namespace GTM HIDDEN {
+
+ #ifdef __x86_64__
+@@ -101,5 +104,6 @@
+
+ } // namespace GTM
+ #endif /* >= GLIBC 2.10 */
++#endif
+
+ #endif // LIBITM_X86_TLS_H
+# HG changeset patch
+# Parent 933c4f064622eb96a0b2ab213abd0cddbd977d1a
+Support for arm-linux-musl.
+
+diff -r 933c4f064622 gcc/config/arm/linux-eabi.h
+--- a/gcc/config/arm/linux-eabi.h Tue May 20 11:06:01 2014 -0400
++++ b/gcc/config/arm/linux-eabi.h Tue May 20 11:06:04 2014 -0400
+@@ -77,6 +77,23 @@
+ %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
+ %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
+
++/* For ARM musl currently supports four dynamic linkers:
++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
++ musl does not support the legacy OABI mode.
++ All the dynamic linkers live in /lib.
++ We default to soft-float, EL. */
++#undef MUSL_DYNAMIC_LINKER
++#if TARGET_BIG_ENDIAN_DEFAULT
++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
++#endif
++#define MUSL_DYNAMIC_LINKER \
++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
++
+ /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
+ use the GNU/Linux version, not the generic BPABI version. */
+ #undef LINK_SPEC
+diff -r 933c4f064622 libitm/config/arm/hwcap.cc
+--- a/libitm/config/arm/hwcap.cc Tue May 20 11:06:01 2014 -0400
++++ b/libitm/config/arm/hwcap.cc Tue May 20 11:06:04 2014 -0400
+@@ -40,7 +40,11 @@
+
+ #ifdef __linux__
+ #include <unistd.h>
++#ifdef __GLIBC__
+ #include <sys/fcntl.h>
++#else
++#include <fcntl.h>
++#endif
+ #include <elf.h>
+
+ static void __attribute__((constructor))
+# HG changeset patch
+# Parent 03fe896f3acaa911e935a8e999d15c7542ee73d1
+Support for mips-linux-musl.
+
+diff -r 03fe896f3aca gcc/config/mips/linux.h
+--- a/gcc/config/mips/linux.h Tue May 20 11:06:04 2014 -0400
++++ b/gcc/config/mips/linux.h Tue May 20 11:06:08 2014 -0400
+@@ -23,3 +23,10 @@
+ #undef UCLIBC_DYNAMIC_LINKER
+ #define UCLIBC_DYNAMIC_LINKER \
+ "%{mnan=2008:/lib/ld-uClibc-mipsn8.so.0;:/lib/ld-uClibc.so.0}"
++
++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
++#endif
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
+# HG changeset patch
+# Parent 6097333f2ab47a4ce37ccfb18b0f07a0cdcfec49
+Support for powerpc-linux-musl.
+
+diff -r 6097333f2ab4 gcc/config.gcc
+--- a/gcc/config.gcc Tue May 20 11:06:08 2014 -0400
++++ b/gcc/config.gcc Tue May 20 11:06:11 2014 -0400
+@@ -2326,6 +2326,10 @@
+ powerpc*-*-linux*paired*)
+ tm_file="${tm_file} rs6000/750cl.h" ;;
+ esac
++ case ${target} in
++ *-linux*-musl*)
++ enable_secureplt=yes ;;
++ esac
+ if test x${enable_secureplt} = xyes; then
+ tm_file="rs6000/secureplt.h ${tm_file}"
+ fi
+diff -r 6097333f2ab4 gcc/config/rs6000/linux64.h
+--- a/gcc/config/rs6000/linux64.h Tue May 20 11:06:08 2014 -0400
++++ b/gcc/config/rs6000/linux64.h Tue May 20 11:06:11 2014 -0400
+@@ -375,17 +375,21 @@
+ #endif
+ #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
+ #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
+ #elif DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER32 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
+ #define GNU_USER_DYNAMIC_LINKER64 \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
+
+ #undef DEFAULT_ASM_ENDIAN
+ #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
+diff -r 6097333f2ab4 gcc/config/rs6000/secureplt.h
+--- a/gcc/config/rs6000/secureplt.h Tue May 20 11:06:08 2014 -0400
++++ b/gcc/config/rs6000/secureplt.h Tue May 20 11:06:11 2014 -0400
+@@ -18,3 +18,4 @@
+ <http://www.gnu.org/licenses/>. */
+
+ #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
+diff -r 6097333f2ab4 gcc/config/rs6000/sysv4.h
+--- a/gcc/config/rs6000/sysv4.h Tue May 20 11:06:08 2014 -0400
++++ b/gcc/config/rs6000/sysv4.h Tue May 20 11:06:11 2014 -0400
+@@ -537,6 +537,9 @@
+ #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
+ #define CC1_SECURE_PLT_DEFAULT_SPEC ""
+ #endif
++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
++#endif
+
+ /* Pass -G xxx to the compiler. */
+ #define CC1_SPEC "%{G*} %(cc1_cpu)" \
+@@ -585,7 +588,8 @@
+
+ /* Override the default target of the linker. */
+ #define LINK_TARGET_SPEC \
+- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
+
+ /* Any specific OS flags. */
+ #define LINK_OS_SPEC "\
+@@ -763,15 +767,18 @@
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
+ #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
+ #if DEFAULT_LIBC == LIBC_UCLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
++#elif DEFAULT_LIBC == LIBC_MUSL
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
+ #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
+-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
+ #else
+ #error "Unsupported DEFAULT_LIBC"
+ #endif
+ #define GNU_USER_DYNAMIC_LINKER \
+- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
+
+ #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
+ %{rdynamic:-export-dynamic} \
+@@ -894,6 +901,7 @@
+ { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
+ { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
+ { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
+ { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
+ { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
+ { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
+diff -r 813971b9f083 gcc/config/aarch64/aarch64-linux.h
+--- a/gcc/config/aarch64/aarch64-linux.h Tue May 20 11:06:11 2014 -0400
++++ b/gcc/config/aarch64/aarch64-linux.h Tue May 20 11:06:14 2014 -0400
+@@ -23,6 +23,8 @@
+
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64%{mbig-endian:_be}.so.1"
+
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
++
+ #define CPP_SPEC "%{pthread:-D_REENTRANT}"
+
+ #define LINUX_TARGET_LINK_SPEC "%{h*} \
+# HG changeset patch
+# Parent 4a62a6813db995fe195d47ff73234d455975ac30
+Microblaze support (again).
+
+diff -r 4a62a6813db9 gcc/config/microblaze/linux.h
+--- a/gcc/config/microblaze/linux.h Tue May 20 11:06:14 2014 -0400
++++ b/gcc/config/microblaze/linux.h Tue May 20 11:06:17 2014 -0400
+@@ -25,7 +25,22 @@
+ #undef TLS_NEEDS_GOT
+ #define TLS_NEEDS_GOT 1
+
+-#define DYNAMIC_LINKER "/lib/ld.so.1"
++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
++#else
++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
++#endif
++
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
++
++#if DEFAULT_LIBC == LIBC_MUSL
++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
++#else
++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
++#endif
++
++
+ #undef SUBTARGET_EXTRA_SPECS
+ #define SUBTARGET_EXTRA_SPECS \
+ { "dynamic_linker", DYNAMIC_LINKER }
+From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
+From: David Holsgrove <david.holsgrove@xilinx.com>
+Date: Fri, 28 Sep 2012 16:32:03 +1000
+Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
+ microblaze.h
+
+Fixes warnings like;
+
+warning: format '%zX' expects argument of type 'size_t',
+but argument 3 has type 'unsigned int' [-Wformat]
+
+Changelog
+
+2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
+
+ * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
+ and PTRDIFF_TYPE.
+
+Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
+---
+ gcc/config/microblaze/microblaze.h | 6 ++++++
+ 1 file changed, 6 insertions(+)
+
+diff -r 20d1c995f5de gcc/config/microblaze/microblaze.h
+--- a/gcc/config/microblaze/microblaze.h Tue May 20 11:06:17 2014 -0400
++++ b/gcc/config/microblaze/microblaze.h Tue May 20 11:06:20 2014 -0400
+@@ -218,6 +218,12 @@
+ #undef PTRDIFF_TYPE
+ #define PTRDIFF_TYPE "int"
+
++#undef SIZE_TYPE
++#define SIZE_TYPE "unsigned int"
++
++#undef PTRDIFF_TYPE
++#define PTRDIFF_TYPE "int"
++
+ #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
+ ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
+ && (ALIGN) < BITS_PER_WORD \
+diff -r 2f999fc929da gcc/config/sh/linux.h
+--- a/gcc/config/sh/linux.h Fri Sep 28 16:32:03 2012 +1000
++++ b/gcc/config/sh/linux.h Tue May 20 11:06:23 2014 -0400
+@@ -43,7 +43,14 @@
+
+ #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
+
++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
++#define MUSL_DYNAMIC_LINKER_E "eb"
++#else
++#define MUSL_DYNAMIC_LINKER_E
++#endif
++
+ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
+
+ #undef SUBTARGET_LINK_EMUL_SUFFIX
+ #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
diff --git a/patches/musl/1.0.3/0001-fix_linker_regression.patch b/patches/musl/1.0.3/0001-fix_linker_regression.patch
new file mode 100644
index 0000000..801cb00
--- /dev/null
+++ b/patches/musl/1.0.3/0001-fix_linker_regression.patch
@@ -0,0 +1,64 @@
+From 9a4ad02214a859e93d2c980e4535378a6a74e3a6 Mon Sep 17 00:00:00 2001
+From: Rich Felker <dalias@aerifal.cx>
+Date: Mon, 30 Jun 2014 01:52:54 +0000
+Subject: fix regression in dynamic linker error reporting
+
+due to a mistake when refactoring the error printing for the dynamic
+linker (commit 7c73cacd09a51a87484db5689864743e4984a84d), all messages
+were suppressed and replaced by blank lines.
+---
+diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
+index bc4f2f6..a08300d 100644
+--- a/src/ldso/dynlink.c
++++ b/src/ldso/dynlink.c
+@@ -290,8 +290,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
+ if (!astype) continue;
+ type = remap_rel(astype);
+ if (!type) {
+- error(errbuf, sizeof errbuf,
+- "Error relocating %s: unsupported relocation type %d",
++ error("Error relocating %s: unsupported relocation type %d",
+ dso->name, astype);
+ continue;
+ }
+@@ -304,8 +303,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
+ def = find_sym(ctx, name, type==REL_PLT);
+ if (!def.sym && (sym->st_shndx != SHN_UNDEF
+ || sym->st_info>>4 != STB_WEAK)) {
+- error(errbuf, sizeof errbuf,
+- "Error relocating %s: %s: symbol not found",
++ error("Error relocating %s: %s: symbol not found",
+ dso->name, name);
+ continue;
+ }
+@@ -366,7 +364,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
+ if (stride<3) addend = reloc_addr[1];
+ if (runtime && def.dso->tls_id >= static_tls_cnt) {
+ struct td_index *new = malloc(sizeof *new);
+- if (!new) error(errbuf, sizeof errbuf,
++ if (!new) error(
+ "Error relocating %s: cannot allocate TLSDESC for %s",
+ dso->name, sym ? name : "(local)" );
+ new->next = dso->td_index;
+@@ -839,8 +837,7 @@ static void load_deps(struct dso *p)
+ if (p->dynv[i] != DT_NEEDED) continue;
+ dep = load_library(p->strings + p->dynv[i+1], p);
+ if (!dep) {
+- error(errbuf, sizeof errbuf,
+- "Error loading shared library %s: %m (needed by %s)",
++ error("Error loading shared library %s: %m (needed by %s)",
+ p->strings + p->dynv[i+1], p->name);
+ continue;
+ }
+@@ -890,8 +887,7 @@ static void reloc_all(struct dso *p)
+
+ if (p->relro_start != p->relro_end &&
+ mprotect(p->base+p->relro_start, p->relro_end-p->relro_start, PROT_READ) < 0) {
+- error(errbuf, sizeof errbuf,
+- "Error relocating %s: RELRO protection failed: %m",
++ error("Error relocating %s: RELRO protection failed: %m",
+ p->name);
+ }
+
+--
+cgit v0.9.0.3-65-g4555
diff --git a/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch b/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
new file mode 100644
index 0000000..4891b4f
--- /dev/null
+++ b/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
@@ -0,0 +1,88 @@
+From 2d8cc92a7cb4a3256ed07d86843388ffd8a882b1 Mon Sep 17 00:00:00 2001
+From: Rich Felker <dalias@aerifal.cx>
+Date: Mon, 30 Jun 2014 05:18:14 +0000
+Subject: fix regression in mips dynamic linker
+
+this issue caused the address of functions in shared libraries to
+resolve to their PLT thunks in the main program rather than their
+correct addresses. it was observed causing crashes, though the
+mechanism of the crash was not thoroughly investigated. since the
+issue is very subtle, it calls for some explanation:
+
+on all well-behaved archs, GOT entries that belong to the PLT use a
+special relocation type, typically called JMP_SLOT, so that the
+dynamic linker can avoid having the jump destinations for the PLT
+resolve to PLT thunks themselves (they also provide a definition for
+the symbol, which must be used whenever the address of the function is
+taken so that all DSOs see the same address).
+
+however, the traditional mips PIC ABI lacked such a JMP_SLOT
+relocation type, presumably because, due to the way PIC works, the
+address of the PLT thunk was never needed and could always be ignored.
+
+prior to commit adf94c19666e687a728bbf398f9a88ea4ea19996, the mips
+version of reloc.h contained a hack that caused all symbol lookups to
+be treated like JMP_SLOT, inhibiting undefined symbols from ever being
+used to resolve symbolic relocations. this hack goes all the way back
+to commit babf820180368f00742ec65b2050a82380d7c542, when the mips
+dynamic linker was first made usable.
+
+during the recent refactoring to eliminate arch-specific relocation
+processing (commit adf94c19666e687a728bbf398f9a88ea4ea19996), this
+hack was overlooked and no equivalent functionality was provided in
+the new code.
+
+fixing the problem is not as simple as adding back an equivalent hack,
+since there is now also a "non-PIC ABI" that can be used for the main
+executable, which actually does use a PLT. the closest thing to
+official documentation I could find for this ABI is nonpic.txt,
+attached to Message-ID: 20080701202236.GA1534@caradoc.them.org, which
+can be found in the gcc mailing list archives and elsewhere. per this
+document, undefined symbols corresponding to PLT thunks have the
+STO_MIPS_PLT bit set in the symbol's st_other field. thus, I have
+added an arch-specific rule for mips, applied at the find_sym level
+rather than the relocation level, to reject undefined symbols with the
+STO_MIPS_PLT bit clear.
+
+the previous hack of treating all mips relocations as JMP_SLOT-like,
+rather than rejecting the unwanted symbols in find_sym, probably also
+caused dlsym to wrongly return PLT thunks in place of the correct
+address of a function under at least some conditions. this should now
+be fixed, at least for global-scope symbol lookups.
+---
+diff --git a/arch/mips/reloc.h b/arch/mips/reloc.h
+index 91fa097..4b81d32 100644
+--- a/arch/mips/reloc.h
++++ b/arch/mips/reloc.h
+@@ -86,3 +86,4 @@ static void do_arch_relocs(struct dso *this, struct dso *head)
+
+ #define NEED_ARCH_RELOCS 1
+ #define DYNAMIC_IS_RO 1
++#define ARCH_SYM_REJECT_UND(s) (!((s)->st_other & STO_MIPS_PLT))
+diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
+index a08300d..55124ff 100644
+--- a/src/ldso/dynlink.c
++++ b/src/ldso/dynlink.c
+@@ -233,6 +233,10 @@ static Sym *gnu_lookup(const char *s, uint32_t h1, struct dso *dso)
+ #define OK_TYPES (1<<STT_NOTYPE | 1<<STT_OBJECT | 1<<STT_FUNC | 1<<STT_COMMON | 1<<STT_TLS)
+ #define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK | 1<<STB_GNU_UNIQUE)
+
++#ifndef ARCH_SYM_REJECT_UND
++#define ARCH_SYM_REJECT_UND(s) 0
++#endif
++
+ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
+ {
+ uint32_t h = 0, gh = 0;
+@@ -249,7 +253,8 @@ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
+ }
+ if (!sym) continue;
+ if (!sym->st_shndx)
+- if (need_def || (sym->st_info&0xf) == STT_TLS)
++ if (need_def || (sym->st_info&0xf) == STT_TLS
++ || ARCH_SYM_REJECT_UND(sym))
+ continue;
+ if (!sym->st_value)
+ if ((sym->st_info&0xf) != STT_TLS)
+--
+cgit v0.9.0.3-65-g4555
diff --git a/patches/musl/1.1.3/0001-fix_linker_regression.patch b/patches/musl/1.1.3/0001-fix_linker_regression.patch
new file mode 100644
index 0000000..801cb00
--- /dev/null
+++ b/patches/musl/1.1.3/0001-fix_linker_regression.patch
@@ -0,0 +1,64 @@
+From 9a4ad02214a859e93d2c980e4535378a6a74e3a6 Mon Sep 17 00:00:00 2001
+From: Rich Felker <dalias@aerifal.cx>
+Date: Mon, 30 Jun 2014 01:52:54 +0000
+Subject: fix regression in dynamic linker error reporting
+
+due to a mistake when refactoring the error printing for the dynamic
+linker (commit 7c73cacd09a51a87484db5689864743e4984a84d), all messages
+were suppressed and replaced by blank lines.
+---
+diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
+index bc4f2f6..a08300d 100644
+--- a/src/ldso/dynlink.c
++++ b/src/ldso/dynlink.c
+@@ -290,8 +290,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
+ if (!astype) continue;
+ type = remap_rel(astype);
+ if (!type) {
+- error(errbuf, sizeof errbuf,
+- "Error relocating %s: unsupported relocation type %d",
++ error("Error relocating %s: unsupported relocation type %d",
+ dso->name, astype);
+ continue;
+ }
+@@ -304,8 +303,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
+ def = find_sym(ctx, name, type==REL_PLT);
+ if (!def.sym && (sym->st_shndx != SHN_UNDEF
+ || sym->st_info>>4 != STB_WEAK)) {
+- error(errbuf, sizeof errbuf,
+- "Error relocating %s: %s: symbol not found",
++ error("Error relocating %s: %s: symbol not found",
+ dso->name, name);
+ continue;
+ }
+@@ -366,7 +364,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
+ if (stride<3) addend = reloc_addr[1];
+ if (runtime && def.dso->tls_id >= static_tls_cnt) {
+ struct td_index *new = malloc(sizeof *new);
+- if (!new) error(errbuf, sizeof errbuf,
++ if (!new) error(
+ "Error relocating %s: cannot allocate TLSDESC for %s",
+ dso->name, sym ? name : "(local)" );
+ new->next = dso->td_index;
+@@ -839,8 +837,7 @@ static void load_deps(struct dso *p)
+ if (p->dynv[i] != DT_NEEDED) continue;
+ dep = load_library(p->strings + p->dynv[i+1], p);
+ if (!dep) {
+- error(errbuf, sizeof errbuf,
+- "Error loading shared library %s: %m (needed by %s)",
++ error("Error loading shared library %s: %m (needed by %s)",
+ p->strings + p->dynv[i+1], p->name);
+ continue;
+ }
+@@ -890,8 +887,7 @@ static void reloc_all(struct dso *p)
+
+ if (p->relro_start != p->relro_end &&
+ mprotect(p->base+p->relro_start, p->relro_end-p->relro_start, PROT_READ) < 0) {
+- error(errbuf, sizeof errbuf,
+- "Error relocating %s: RELRO protection failed: %m",
++ error("Error relocating %s: RELRO protection failed: %m",
+ p->name);
+ }
+
+--
+cgit v0.9.0.3-65-g4555
diff --git a/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch b/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
new file mode 100644
index 0000000..4891b4f
--- /dev/null
+++ b/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
@@ -0,0 +1,88 @@
+From 2d8cc92a7cb4a3256ed07d86843388ffd8a882b1 Mon Sep 17 00:00:00 2001
+From: Rich Felker <dalias@aerifal.cx>
+Date: Mon, 30 Jun 2014 05:18:14 +0000
+Subject: fix regression in mips dynamic linker
+
+this issue caused the address of functions in shared libraries to
+resolve to their PLT thunks in the main program rather than their
+correct addresses. it was observed causing crashes, though the
+mechanism of the crash was not thoroughly investigated. since the
+issue is very subtle, it calls for some explanation:
+
+on all well-behaved archs, GOT entries that belong to the PLT use a
+special relocation type, typically called JMP_SLOT, so that the
+dynamic linker can avoid having the jump destinations for the PLT
+resolve to PLT thunks themselves (they also provide a definition for
+the symbol, which must be used whenever the address of the function is
+taken so that all DSOs see the same address).
+
+however, the traditional mips PIC ABI lacked such a JMP_SLOT
+relocation type, presumably because, due to the way PIC works, the
+address of the PLT thunk was never needed and could always be ignored.
+
+prior to commit adf94c19666e687a728bbf398f9a88ea4ea19996, the mips
+version of reloc.h contained a hack that caused all symbol lookups to
+be treated like JMP_SLOT, inhibiting undefined symbols from ever being
+used to resolve symbolic relocations. this hack goes all the way back
+to commit babf820180368f00742ec65b2050a82380d7c542, when the mips
+dynamic linker was first made usable.
+
+during the recent refactoring to eliminate arch-specific relocation
+processing (commit adf94c19666e687a728bbf398f9a88ea4ea19996), this
+hack was overlooked and no equivalent functionality was provided in
+the new code.
+
+fixing the problem is not as simple as adding back an equivalent hack,
+since there is now also a "non-PIC ABI" that can be used for the main
+executable, which actually does use a PLT. the closest thing to
+official documentation I could find for this ABI is nonpic.txt,
+attached to Message-ID: 20080701202236.GA1534@caradoc.them.org, which
+can be found in the gcc mailing list archives and elsewhere. per this
+document, undefined symbols corresponding to PLT thunks have the
+STO_MIPS_PLT bit set in the symbol's st_other field. thus, I have
+added an arch-specific rule for mips, applied at the find_sym level
+rather than the relocation level, to reject undefined symbols with the
+STO_MIPS_PLT bit clear.
+
+the previous hack of treating all mips relocations as JMP_SLOT-like,
+rather than rejecting the unwanted symbols in find_sym, probably also
+caused dlsym to wrongly return PLT thunks in place of the correct
+address of a function under at least some conditions. this should now
+be fixed, at least for global-scope symbol lookups.
+---
+diff --git a/arch/mips/reloc.h b/arch/mips/reloc.h
+index 91fa097..4b81d32 100644
+--- a/arch/mips/reloc.h
++++ b/arch/mips/reloc.h
+@@ -86,3 +86,4 @@ static void do_arch_relocs(struct dso *this, struct dso *head)
+
+ #define NEED_ARCH_RELOCS 1
+ #define DYNAMIC_IS_RO 1
++#define ARCH_SYM_REJECT_UND(s) (!((s)->st_other & STO_MIPS_PLT))
+diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
+index a08300d..55124ff 100644
+--- a/src/ldso/dynlink.c
++++ b/src/ldso/dynlink.c
+@@ -233,6 +233,10 @@ static Sym *gnu_lookup(const char *s, uint32_t h1, struct dso *dso)
+ #define OK_TYPES (1<<STT_NOTYPE | 1<<STT_OBJECT | 1<<STT_FUNC | 1<<STT_COMMON | 1<<STT_TLS)
+ #define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK | 1<<STB_GNU_UNIQUE)
+
++#ifndef ARCH_SYM_REJECT_UND
++#define ARCH_SYM_REJECT_UND(s) 0
++#endif
++
+ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
+ {
+ uint32_t h = 0, gh = 0;
+@@ -249,7 +253,8 @@ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
+ }
+ if (!sym) continue;
+ if (!sym->st_shndx)
+- if (need_def || (sym->st_info&0xf) == STT_TLS)
++ if (need_def || (sym->st_info&0xf) == STT_TLS
++ || ARCH_SYM_REJECT_UND(sym))
+ continue;
+ if (!sym->st_value)
+ if ((sym->st_info&0xf) != STT_TLS)
+--
+cgit v0.9.0.3-65-g4555
diff --git a/scripts/build/arch/arm.sh b/scripts/build/arch/arm.sh
index 430bdde..5f6ce2f 100644
--- a/scripts/build/arch/arm.sh
+++ b/scripts/build/arch/arm.sh
@@ -17,6 +17,7 @@ CT_DoArchTupleValues() {
case "${CT_LIBC},${CT_ARCH_ARM_EABI}" in
*glibc,y) CT_TARGET_SYS=gnueabi;;
uClibc,y) CT_TARGET_SYS=uclibcgnueabi;;
+ musl,y) CT_TARGET_SYS=musleabi;;
*,y) CT_TARGET_SYS=eabi;;
esac
diff --git a/scripts/build/libc/musl.sh b/scripts/build/libc/musl.sh
new file mode 100644
index 0000000..536267c
--- /dev/null
+++ b/scripts/build/libc/musl.sh
@@ -0,0 +1,128 @@
+# This file adds functions to build the musl C library
+# Copyright 2013 Timo Teräs
+# Licensed under the GPL v2. See COPYING in the root of this package
+
+do_libc_get() {
+ local libc_src
+
+ libc_src="http://www.musl-libc.org/releases"
+
+ if [ "${CT_LIBC_MUSL_CUSTOM}" = "y" ]; then
+ CT_GetCustom "musl" "${CT_LIBC_VERSION}" \
+ "${CT_LIBC_MUSL_CUSTOM_LOCATION}"
+ else # ! custom location
+ CT_GetFile "musl-${CT_LIBC_VERSION}" "${libc_src}"
+ fi # ! custom location
+}
+
+do_libc_extract() {
+ # If using custom directory location, nothing to do.
+ if [ "${CT_LIBC_MUSL_CUSTOM}" = "y" ]; then
+ # Abort if the custom directory is not found.
+ if ! [ -d "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" ]; then
+ CT_Abort "Directory not found: ${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}"
+ fi
+
+ return 0
+ fi
+
+ CT_Extract "musl-${CT_LIBC_VERSION}"
+ CT_Patch "musl" "${CT_LIBC_VERSION}"
+}
+
+do_libc_check_config() {
+ :
+}
+
+do_libc_configure() {
+ CT_DoLog EXTRA "Configuring C library"
+ local -a extra_cflags
+
+ # From buildroot:
+ # gcc constant folding bug with weak aliases workaround
+ # See http://www.openwall.com/lists/musl/2014/05/15/1
+ if [ "${CT_CC_GCC_4_9_or_later}" = "y" ]; then
+ extra_cflags+=("-fno-toplevel-reorder")
+ fi
+
+ # NOTE: musl handles the build/host/target a little bit differently
+ # then one would expect:
+ # build : not used
+ # host : the machine building musl
+ # target : the machine musl runs on
+ CT_DoExecLog CFG \
+ CFLAGS="${extra_cflags[@]}" \
+ CROSS_COMPILE="${CT_TARGET}-" \
+ ./configure \
+ --host="${CT_TARGET}" \
+ --target="${CT_TARGET}" \
+ --prefix="/usr" \
+ --disable-gcc-wrapper
+}
+
+do_get_arch() {
+ local ARCH=""
+
+ # musl can be installed without gcc if arch is known
+ case "${CT_TARGET}" in
+ arm*) ARCH=arm ;;
+ i?86*) ARCH=i386 ;;
+ x86_64*) ARCH=x86_64 ;;
+ mips-*|mipsel-*) ARCH=mips ;;
+ microblaze-*) ARCH=microblaze ;;
+ powerpc-*) ARCH=powerpc ;;
+ sh-*|sh[34]-*) ARCH=sh ;;
+ x32-*) ARCH=x32 ;;
+ *) ARCH="" ;;
+ esac
+
+ echo "${ARCH}"
+}
+
+do_libc_start_files() {
+ #local ARCH="$(do_get_arch)"
+ CT_DoStep INFO "Installing C library headers"
+
+ # Simply copy files until musl has the ability to build out-of-tree
+ CT_DoLog EXTRA "Copying sources to build directory"
+ CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" \
+ "${CT_BUILD_DIR}/build-libc-headers"
+ cd "${CT_BUILD_DIR}/build-libc-headers"
+
+ do_libc_configure
+
+ CT_DoLog EXTRA "Installing headers"
+ #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" install-headers
+ CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install-headers
+
+ #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" \
+ CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" \
+ crt/crt1.o crt/crti.o crt/crtn.o
+ CT_DoExecLog ALL cp -av crt/crt*.o "${CT_SYSROOT_DIR}/usr/lib"
+ CT_DoExecLog ALL ${CT_TARGET}-gcc -nostdlib \
+ -nostartfiles -shared -x c /dev/null -o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
+ CT_EndStep
+}
+
+do_libc() {
+ #local ARCH="$(do_get_arch)"
+ CT_DoStep INFO "Installing C library"
+
+ # Simply copy files until musl has the ability to build out-of-tree
+ CT_DoLog EXTRA "Copying sources to build directory"
+ CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" \
+ "${CT_BUILD_DIR}/build-libc"
+ cd "${CT_BUILD_DIR}/build-libc"
+
+ do_libc_configure
+
+ CT_DoLog EXTRA "Building C library"
+ #CT_DoExecLog ALL make ARCH="${ARCH}" ${JOBSFLAGS}
+ CT_DoExecLog ALL make ${JOBSFLAGS}
+
+ CT_DoLog EXTRA "Installing C library"
+ #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" install
+ CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install
+
+ CT_EndStep
+}
diff --git a/scripts/functions b/scripts/functions
index 2e4d4fa..eae3b95 100644
--- a/scripts/functions
+++ b/scripts/functions
@@ -1182,6 +1182,7 @@ CT_DoBuildTargetTuple() {
case "${CT_LIBC}" in
*glibc) CT_TARGET_SYS=gnu;;
uClibc) CT_TARGET_SYS=uclibc;;
+ musl) CT_TARGET_SYS=musl;;
*) CT_TARGET_SYS=elf;;
esac
--
2.0.1
--
For unsubscribe information see http://sourceware.org/lists.html#faq
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH 3/4] libc/mingw: threads are the native ones
2014-08-01 2:02 [PATCH 0/4] Update how threads are configured, and add musl-libc Bryan Hundven
@ 2014-08-01 2:02 ` Bryan Hundven
2014-08-01 2:02 ` [PATCH 2/4] libc: libces are responsible for naming their threads implementation Bryan Hundven
` (2 subsequent siblings)
3 siblings, 0 replies; 7+ messages in thread
From: Bryan Hundven @ 2014-08-01 2:02 UTC (permalink / raw)
To: Yann E. MORIN; +Cc: crossgcc, Bryan Hundven
From: "Yann E. MORIN" <yann.morin.1998@free.fr>
There is no need to differentiate the win32 threads case, since we
can cosider them to be the native implementation on Windows.
Besides, with the previous patch, nothing uses it anymore.
So, just remove it.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
---
config/libc.in | 13 ++-----------
config/libc/mingw.in | 2 +-
2 files changed, 3 insertions(+), 12 deletions(-)
diff --git a/config/libc.in b/config/libc.in
index ba6da8f..ca597c8 100644
--- a/config/libc.in
+++ b/config/libc.in
@@ -32,10 +32,6 @@ config LIBC_SUPPORT_THREADS_LT
bool
select LIBC_SUPPORT_THREADS_ANY
-config LIBC_SUPPORT_THREADS_WIN32
- bool
- select LIBC_SUPPORT_THREADS_ANY
-
config LIBC_SUPPORT_THREADS_NONE
bool
@@ -53,7 +49,6 @@ choice
prompt "Threading implementation to use:"
default THREADS_NATIVE if LIBC_SUPPORT_THREADS_NATIVE
default THREADS_THREADS_LT if LIBC_SUPPORT_THREADS_LT && ! LIBC_SUPPORT_THREADS_NATIVE
- default THREADS_WIN32 if LIBC_SUPPORT_THREADS_WIN32
default THREADS_NONE if ! LIBC_SUPPORT_THREADS_ANY
config THREADS_NATIVE
@@ -64,18 +59,14 @@ config THREADS_NATIVE
This selects the native threads implementation for the selected
system and C library.
- For example, on Linux with glibc, this is NPTL.
+ For example, on Linux with glibc, this is NPTL; on Windows with
+ mingw, this is win32.
config THREADS_LT
bool
prompt "linuxthreads"
depends on LIBC_SUPPORT_THREADS_LT
-config THREADS_WIN32
- bool
- prompt "win32"
- depends on LIBC_SUPPORT_THREADS_WIN32
-
config THREADS_NONE
bool
prompt "none"
diff --git a/config/libc/mingw.in b/config/libc/mingw.in
index 8b4d98a..875f5a2 100644
--- a/config/libc/mingw.in
+++ b/config/libc/mingw.in
@@ -2,7 +2,7 @@
## depends on WINDOWS
##
-## select LIBC_SUPPORT_THREADS_WIN32
+## select LIBC_SUPPORT_THREADS_NATIVE
## select CC_CORE_PASSES_NEEDED
##
## help The de-facto standard for Mingw distributions.
--
2.0.1
--
For unsubscribe information see http://sourceware.org/lists.html#faq
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH 0/4] Update how threads are configured, and add musl-libc
@ 2014-08-01 2:02 Bryan Hundven
2014-08-01 2:02 ` [PATCH 3/4] libc/mingw: threads are the native ones Bryan Hundven
` (3 more replies)
0 siblings, 4 replies; 7+ messages in thread
From: Bryan Hundven @ 2014-08-01 2:02 UTC (permalink / raw)
To: Yann E. MORIN; +Cc: crossgcc
Yann, List,
Following are three commits that Yann created to update how threads are configured for the different LIBCs.
The 4th patch adds support for musl-libc, which includes the newly released 1.1.4 Mainline.
-Bryan
--
For unsubscribe information see http://sourceware.org/lists.html#faq
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH 2/4] libc: libces are responsible for naming their threads implementation
2014-08-01 2:02 [PATCH 0/4] Update how threads are configured, and add musl-libc Bryan Hundven
2014-08-01 2:02 ` [PATCH 3/4] libc/mingw: threads are the native ones Bryan Hundven
@ 2014-08-01 2:02 ` Bryan Hundven
2014-08-01 2:02 ` [PATCH 4/4] [libc/musl] Add musl-libc support Bryan Hundven
2014-08-01 2:02 ` [PATCH 1/4] libc: rename the threads options Bryan Hundven
3 siblings, 0 replies; 7+ messages in thread
From: Bryan Hundven @ 2014-08-01 2:02 UTC (permalink / raw)
To: Yann E. MORIN; +Cc: crossgcc, Bryan Hundven
From: "Yann E. MORIN" <yann.morin.1998@free.fr>
This will help add new implementations, such as the one in musl.
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
---
config/libc.in | 7 ++-----
config/libc/eglibc.in | 3 +++
config/libc/glibc.in | 3 +++
config/libc/mingw.in | 3 +++
config/libc/none.in | 6 ++++++
config/libc/uClibc.in | 4 ++++
6 files changed, 21 insertions(+), 5 deletions(-)
diff --git a/config/libc.in b/config/libc.in
index 240a01e..ba6da8f 100644
--- a/config/libc.in
+++ b/config/libc.in
@@ -39,13 +39,10 @@ config LIBC_SUPPORT_THREADS_WIN32
config LIBC_SUPPORT_THREADS_NONE
bool
+# C libraries should provide other values
config THREADS
string
- default "nptl" if THREADS_NATIVE
- default "linuxthreads" if THREADS_LT
- default "win32" if THREADS_WIN32
- default "none" if THREADS_NONE || LIBC_none
-# No C library, no threads!
+ default "none" if THREADS_NONE
if ! LIBC_none
diff --git a/config/libc/eglibc.in b/config/libc/eglibc.in
index b677df0..e939d03 100644
--- a/config/libc/eglibc.in
+++ b/config/libc/eglibc.in
@@ -12,6 +12,9 @@
## help cross-compilation support. EGLIBC also includes some embedded ports
## help (such as e500/spe) that are normally separate add-ons of GLIBC.
+config THREADS
+ default "nptl"
+
choice
bool
prompt "eglibc version"
diff --git a/config/libc/glibc.in b/config/libc/glibc.in
index 5870995..2e34793 100644
--- a/config/libc/glibc.in
+++ b/config/libc/glibc.in
@@ -8,6 +8,9 @@
## help The de-facto standard for Linux distributions.
## help Feature-rich, but large... Most usefull for desktop-like systems.
+config THREADS
+ default "nptl"
+
choice
bool
prompt "glibc version"
diff --git a/config/libc/mingw.in b/config/libc/mingw.in
index 8c32b91..8b4d98a 100644
--- a/config/libc/mingw.in
+++ b/config/libc/mingw.in
@@ -7,6 +7,9 @@
##
## help The de-facto standard for Mingw distributions.
+config THREADS
+ default "win32"
+
choice
bool
prompt "Windows API version"
diff --git a/config/libc/none.in b/config/libc/none.in
index 78a0612..d587faf 100644
--- a/config/libc/none.in
+++ b/config/libc/none.in
@@ -11,3 +11,9 @@
## help on the C library.
## help
## help If unsure: do *not* choose that, and use another option in the choice.
+
+# The no-threads is usually set in the main libc.in config file.
+# But since the "none" C library does not show the threads choice,
+# we have to define the no-threads value ourselves here:
+config THREADS
+ default "none"
diff --git a/config/libc/uClibc.in b/config/libc/uClibc.in
index f641a6f..1529642 100644
--- a/config/libc/uClibc.in
+++ b/config/libc/uClibc.in
@@ -11,6 +11,10 @@
## help Highly configurable, thus as feature-rich as you
## help need, without compromising for size.
+config THREADS
+ default "nptl" if THREADS_NATIVE
+ default "linuxthreads" if THREADS_LT
+
if ARCH_FLOAT_SOFTFP
comment "'softfp' ABI and uClibc is not entirely tested in crosstool-NG"
comment "You may experience issues, although it should work just fine"
--
2.0.1
--
For unsubscribe information see http://sourceware.org/lists.html#faq
^ permalink raw reply [flat|nested] 7+ messages in thread
* [PATCH 1/4] libc: rename the threads options
2014-08-01 2:02 [PATCH 0/4] Update how threads are configured, and add musl-libc Bryan Hundven
` (2 preceding siblings ...)
2014-08-01 2:02 ` [PATCH 4/4] [libc/musl] Add musl-libc support Bryan Hundven
@ 2014-08-01 2:02 ` Bryan Hundven
3 siblings, 0 replies; 7+ messages in thread
From: Bryan Hundven @ 2014-08-01 2:02 UTC (permalink / raw)
To: Yann E. MORIN; +Cc: crossgcc, Bryan Hundven
From: "Yann E. MORIN" <yann.morin.1998@free.fr>
Use a more coherent naming for the options. This will help commonalise
the native case (e.g. NPTL on Linux, win32 on Windows), and add alternate
implementations (e.g. musl.)
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>
Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
---
config/libc.in | 37 ++++++++++++----------
config/libc/eglibc.in | 2 +-
config/libc/glibc.in | 2 +-
config/libc/mingw.in | 2 +-
config/libc/uClibc.in | 6 ++--
config/libc/uClibc.in.2 | 6 ++--
.../m68k-unknown-uclinux-uclibc/crosstool.config | 2 +-
7 files changed, 31 insertions(+), 26 deletions(-)
diff --git a/config/libc.in b/config/libc.in
index 03f5db2..240a01e 100644
--- a/config/libc.in
+++ b/config/libc.in
@@ -24,15 +24,15 @@ source "config.gen/libc.in"
config LIBC_SUPPORT_THREADS_ANY
bool
-config LIBC_SUPPORT_NPTL
+config LIBC_SUPPORT_THREADS_NATIVE
bool
select LIBC_SUPPORT_THREADS_ANY
-config LIBC_SUPPORT_LINUXTHREADS
+config LIBC_SUPPORT_THREADS_LT
bool
select LIBC_SUPPORT_THREADS_ANY
-config LIBC_SUPPORT_WIN32THREADS
+config LIBC_SUPPORT_THREADS_WIN32
bool
select LIBC_SUPPORT_THREADS_ANY
@@ -41,9 +41,9 @@ config LIBC_SUPPORT_THREADS_NONE
config THREADS
string
- default "nptl" if THREADS_NPTL
- default "linuxthreads" if THREADS_LINUXTHREADS
- default "win32" if THREADS_WIN32THREADS
+ default "nptl" if THREADS_NATIVE
+ default "linuxthreads" if THREADS_LT
+ default "win32" if THREADS_WIN32
default "none" if THREADS_NONE || LIBC_none
# No C library, no threads!
@@ -54,25 +54,30 @@ comment "Common C library options"
choice
bool
prompt "Threading implementation to use:"
- default THREADS_NPTL if LIBC_SUPPORT_NPTL
- default THREADS_LINUXTHREADS if LIBC_SUPPORT_LINUXTHREADS && ! LIBC_SUPPORT_NPTL
- default THREADS_WIN32 if LIBC_SUPPORT_WIN32THREADS
+ default THREADS_NATIVE if LIBC_SUPPORT_THREADS_NATIVE
+ default THREADS_THREADS_LT if LIBC_SUPPORT_THREADS_LT && ! LIBC_SUPPORT_THREADS_NATIVE
+ default THREADS_WIN32 if LIBC_SUPPORT_THREADS_WIN32
default THREADS_NONE if ! LIBC_SUPPORT_THREADS_ANY
-config THREADS_NPTL
+config THREADS_NATIVE
bool
- prompt "nptl"
- depends on LIBC_SUPPORT_NPTL
+ prompt "native"
+ depends on LIBC_SUPPORT_THREADS_NATIVE
+ help
+ This selects the native threads implementation for the selected
+ system and C library.
+
+ For example, on Linux with glibc, this is NPTL.
-config THREADS_LINUXTHREADS
+config THREADS_LT
bool
prompt "linuxthreads"
- depends on LIBC_SUPPORT_LINUXTHREADS
+ depends on LIBC_SUPPORT_THREADS_LT
-config THREADS_WIN32THREADS
+config THREADS_WIN32
bool
prompt "win32"
- depends on LIBC_SUPPORT_WIN32THREADS
+ depends on LIBC_SUPPORT_THREADS_WIN32
config THREADS_NONE
bool
diff --git a/config/libc/eglibc.in b/config/libc/eglibc.in
index 4f2b3ba..b677df0 100644
--- a/config/libc/eglibc.in
+++ b/config/libc/eglibc.in
@@ -2,7 +2,7 @@
## depends on ! WINDOWS && ! BARE_METAL && ARCH_USE_MMU
##
-## select LIBC_SUPPORT_NPTL
+## select LIBC_SUPPORT_THREADS_NATIVE
## select CC_CORE_PASSES_NEEDED
##
## help EGLIBC (Embedded GLIBC) is a variant of the standard GNU GLIBC
diff --git a/config/libc/glibc.in b/config/libc/glibc.in
index 15e3aff..5870995 100644
--- a/config/libc/glibc.in
+++ b/config/libc/glibc.in
@@ -2,7 +2,7 @@
## depends on ! WINDOWS && ! BARE_METAL && ARCH_USE_MMU
##
-## select LIBC_SUPPORT_NPTL
+## select LIBC_SUPPORT_THREADS_NATIVE
## select CC_CORE_PASSES_NEEDED
##
## help The de-facto standard for Linux distributions.
diff --git a/config/libc/mingw.in b/config/libc/mingw.in
index 7e27ae0..8c32b91 100644
--- a/config/libc/mingw.in
+++ b/config/libc/mingw.in
@@ -2,7 +2,7 @@
## depends on WINDOWS
##
-## select LIBC_SUPPORT_WIN32THREADS
+## select LIBC_SUPPORT_THREADS_WIN32
## select CC_CORE_PASSES_NEEDED
##
## help The de-facto standard for Mingw distributions.
diff --git a/config/libc/uClibc.in b/config/libc/uClibc.in
index 6be63d6..f641a6f 100644
--- a/config/libc/uClibc.in
+++ b/config/libc/uClibc.in
@@ -2,7 +2,7 @@
## depends on ! WINDOWS && ! BARE_METAL
##
-## select LIBC_SUPPORT_LINUXTHREADS
+## select LIBC_SUPPORT_THREADS_LT
## select LIBC_SUPPORT_THREADS_NONE
## select CC_CORE_PASSES_NEEDED
##
@@ -76,7 +76,7 @@ config LIBC_UCLIBC_CUSTOM
bool
prompt "Custom uClibc"
depends on EXPERIMENTAL
- select LIBC_SUPPORT_NPTL
+ select LIBC_SUPPORT_THREADS_NATIVE
select LIBC_UCLIBC_0_9_30_or_later
endchoice
@@ -111,7 +111,7 @@ config LIBC_VERSION
config LIBC_UCLIBC_0_9_32_or_later
bool
- select LIBC_SUPPORT_NPTL
+ select LIBC_SUPPORT_THREADS_NATIVE
select LIBC_UCLIBC_0_9_30_or_later
config LIBC_UCLIBC_0_9_30_or_later
diff --git a/config/libc/uClibc.in.2 b/config/libc/uClibc.in.2
index c1a84f9..8a21a4f 100644
--- a/config/libc/uClibc.in.2
+++ b/config/libc/uClibc.in.2
@@ -1,6 +1,6 @@
# uClibc second-part option
-if THREADS_LINUXTHREADS
+if THREADS_LT
choice
bool
@@ -28,12 +28,12 @@ config LIBC_UCLIBC_LNXTHRD_NEW
endchoice
-endif # THREADS_LINUXTHREADS
+endif # THREADS_LT
config LIBC_UCLIBC_LNXTHRD
string
default "" if THREADS_NONE
- default "" if THREADS_NPTL
+ default "" if THREADS_NATIVE
default "old" if LIBC_UCLIBC_LNXTHRD_OLD
default "new" if LIBC_UCLIBC_LNXTHRD_NEW
diff --git a/samples/m68k-unknown-uclinux-uclibc/crosstool.config b/samples/m68k-unknown-uclinux-uclibc/crosstool.config
index 6dd27ca..c83e3b7 100644
--- a/samples/m68k-unknown-uclinux-uclibc/crosstool.config
+++ b/samples/m68k-unknown-uclinux-uclibc/crosstool.config
@@ -7,4 +7,4 @@ CT_KERNEL_linux=y
CT_KERNEL_V_3_5=y
CT_BINUTILS_V_2_21_1a=y
CT_LIBC_UCLIBC_CONFIG_FILE="${CT_LIB_DIR}/samples/${CT_TARGET}/${CT_LIBC}-${CT_LIBC_VERSION}.config"
-CT_THREADS_LINUXTHREADS=y
+CT_THREADS_LT=y
--
2.0.1
--
For unsubscribe information see http://sourceware.org/lists.html#faq
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 4/4] [libc/musl] Add musl-libc support
2014-08-01 2:02 ` [PATCH 4/4] [libc/musl] Add musl-libc support Bryan Hundven
@ 2014-08-08 21:21 ` Yann E. MORIN
2014-08-08 21:28 ` Bryan Hundven
0 siblings, 1 reply; 7+ messages in thread
From: Yann E. MORIN @ 2014-08-08 21:21 UTC (permalink / raw)
To: Bryan Hundven; +Cc: crossgcc
Bryan, All,
On 2014-07-31 19:01 -0700, Bryan Hundven spake thusly:
> This patch adds initial support for musl-libc.
Applied, with those changes discussed on IRC:
- gcc musl patch has issues, so removed; we can add it back later,
- do_get_arch() is dead code for now, dropped.
Thank you! :-)
Regards,
Yann E. MORIN.
> Musl-libc versions currently supported:
> * 1.0.3 (Stable)
> * 1.1.3 (Previous Mainline)
> * 1.1.4 (Mainline)
>
> Futher improvements are needed.
> * gcc-4.9.x has issues (Might be fixed in musl-1.1.4).
> * Multilib support is needed.
> * Checks to make sure paths are correct.
> * Move to 2-step gcc build. 3-step build is not necessary.
>
> Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
> ---
> config/libc/musl.in | 49 ++
> patches/experimental/gcc/4.6.0/0001-musl.patch | 304 +++++++++
> patches/experimental/gcc/4.8.0/0001-musl.patch | 401 +++++++++++
> patches/experimental/gcc/4.8.1/0001-musl.patch | 626 +++++++++++++++++
> patches/experimental/gcc/4.8.2/0001-musl.patch | 750 +++++++++++++++++++++
> patches/experimental/gcc/4.8.3/0001-musl.patch | 736 ++++++++++++++++++++
> patches/experimental/gcc/4.9.0/0001-musl.patch | 706 +++++++++++++++++++
> .../musl/1.0.3/0001-fix_linker_regression.patch | 64 ++
> .../1.0.3/0002-fix_mips_linker_regression.patch | 88 +++
> .../musl/1.1.3/0001-fix_linker_regression.patch | 64 ++
> .../1.1.3/0002-fix_mips_linker_regression.patch | 88 +++
> scripts/build/arch/arm.sh | 1 +
> scripts/build/libc/musl.sh | 128 ++++
> scripts/functions | 1 +
> 14 files changed, 4006 insertions(+)
> create mode 100644 config/libc/musl.in
> create mode 100644 patches/experimental/gcc/4.6.0/0001-musl.patch
> create mode 100644 patches/experimental/gcc/4.8.0/0001-musl.patch
> create mode 100644 patches/experimental/gcc/4.8.1/0001-musl.patch
> create mode 100644 patches/experimental/gcc/4.8.2/0001-musl.patch
> create mode 100644 patches/experimental/gcc/4.8.3/0001-musl.patch
> create mode 100644 patches/experimental/gcc/4.9.0/0001-musl.patch
> create mode 100644 patches/musl/1.0.3/0001-fix_linker_regression.patch
> create mode 100644 patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
> create mode 100644 patches/musl/1.1.3/0001-fix_linker_regression.patch
> create mode 100644 patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
> create mode 100644 scripts/build/libc/musl.sh
>
> diff --git a/config/libc/musl.in b/config/libc/musl.in
> new file mode 100644
> index 0000000..7bab480
> --- /dev/null
> +++ b/config/libc/musl.in
> @@ -0,0 +1,49 @@
> +# musl options
> +
> +## depends on ! WINDOWS && ! BARE_METAL
> +##
> +## select LIBC_SUPPORT_THREADS_NATIVE
> +## select CC_CORE_PASSES_NEEDED
> +##
> +## help Musl is a new standard library to power a new generation of Linux-based
> +## help devices. musl is lightweight, fast, simple, free, and strives to be
> +## help correct in the sense of standards-conformance and safety.
> +
> +config THREADS
> + default "musl"
> +
> +choice
> + bool
> + prompt "musl version"
> +# Don't remove next line
> +# CT_INSERT_VERSION_BELOW
> +
> +config LIBC_MUSL_V_1_1_4
> + bool
> + prompt "1.1.4 (Mainline)"
> + depends on EXPERIMENTAL
> +
> +config LIBC_MUSL_V_1_1_3
> + bool
> + prompt "1.1.3"
> + depends on EXPERIMENTAL
> +
> +config LIBC_MUSL_V_1_0_3
> + bool
> + prompt "1.0.3 (Stable)"
> +
> +config LIBC_MUSL_V_CUSTOM
> + bool
> + prompt "Custom musl"
> + depends on EXPERIMENTAL
> +
> +endchoice
> +
> +config LIBC_VERSION
> + string
> +# Don't remove next line
> +# CT_INSERT_VERSION_STRING_BELOW
> + default "1.1.4" if LIBC_MUSL_V_1_1_4
> + default "1.1.3" if LIBC_MUSL_V_1_1_3
> + default "1.0.3" if LIBC_MUSL_V_1_0_3
> + default "custom" if LIBC_MUSL_V_CUSTOM
> diff --git a/patches/experimental/gcc/4.6.0/0001-musl.patch b/patches/experimental/gcc/4.6.0/0001-musl.patch
> new file mode 100644
> index 0000000..b0b6c4b
> --- /dev/null
> +++ b/patches/experimental/gcc/4.6.0/0001-musl.patch
> @@ -0,0 +1,304 @@
> +diff --git a/patches/experimental/gcc/4.6.0/0001-musl.patch b/patches/experimental/gcc/4.6.0/0001-musl.patch
> +new file mode 100644
> +index 0000000..cee9948
> +--- /dev/null
> ++++ b/patches/experimental/gcc/4.6.0/0001-musl.patch
> +@@ -0,0 +1,231 @@
> ++diff --git a/config.sub b/config.sub
> ++--- a/config.sub
> +++++ b/config.sub
> ++@@ -125,6 +125,7 @@ esac
> ++ maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
> ++ case $maybe_os in
> ++ nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
> +++ linux-musl* | \
> ++ linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
> ++ knetbsd*-gnu* | netbsd*-gnu* | \
> ++ kopensolaris*-gnu* | \
> ++@@ -1310,6 +1311,7 @@ case $os in
> ++ | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
> ++ | -mingw32* | -linux-gnu* | -linux-android* \
> ++ | -linux-newlib* | -linux-uclibc* \
> +++ | -linux-musl* \
> ++ | -uxpv* | -beos* | -mpeix* | -udk* \
> ++ | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
> ++ | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
> ++diff --git a/gcc/config.gcc b/gcc/config.gcc
> ++--- a/gcc/config.gcc
> +++++ b/gcc/config.gcc
> ++@@ -478,7 +478,7 @@ case ${target} in
> ++ esac
> ++
> ++ # Common C libraries.
> ++-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
> +++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
> ++
> ++ # Common parts for widely ported systems.
> ++ case ${target} in
> ++@@ -591,6 +591,9 @@ case ${target} in
> ++ *-*-*uclibc*)
> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
> ++ ;;
> +++ *-*-*musl*)
> +++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
> +++ ;;
> ++ *)
> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
> ++ ;;
> ++diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
> ++--- a/gcc/config/arm/linux-eabi.h
> +++++ b/gcc/config/arm/linux-eabi.h
> ++@@ -64,6 +64,10 @@
> ++ #undef GLIBC_DYNAMIC_LINKER
> ++ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
> ++
> +++/* musl has no "classic" (i.e. broken) mode */
> +++#undef MUSL_DYNAMIC_LINKER
> +++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.so.1"
> +++
> ++ /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
> ++ use the GNU/Linux version, not the generic BPABI version. */
> ++ #undef LINK_SPEC
> ++diff --git a/gcc/config/i386/linux.h b/gcc/config/i386/linux.h
> ++--- a/gcc/config/i386/linux.h
> +++++ b/gcc/config/i386/linux.h
> ++@@ -93,6 +93,7 @@ along with GCC; see the file COPYING3. If not see
> ++ /* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
> ++ #define LINK_EMULATION "elf_i386"
> ++ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
> +++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
> ++
> ++ #undef ASM_SPEC
> ++ #define ASM_SPEC \
> ++diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
> ++--- a/gcc/config/i386/linux64.h
> +++++ b/gcc/config/i386/linux64.h
> ++@@ -65,6 +65,9 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
> ++ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
> ++ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
> ++
> +++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
> +++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
> +++
> ++ #if TARGET_64BIT_DEFAULT
> ++ #define SPEC_32 "m32"
> ++ #define SPEC_64 "!m32"
> ++diff --git a/gcc/config/linux.h b/gcc/config/linux.h
> ++--- a/gcc/config/linux.h
> +++++ b/gcc/config/linux.h
> ++@@ -33,10 +33,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
> ++ #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
> ++ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
> ++ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
> +++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
> ++ #else
> ++ #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
> ++ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
> ++ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
> +++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
> ++ #endif
> ++
> ++ #define LINUX_TARGET_OS_CPP_BUILTINS() \
> ++@@ -54,18 +56,21 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
> ++ uClibc or Bionic is the default C library and whether
> ++ -muclibc or -mglibc or -mbionic has been passed to change the default. */
> ++
> ++-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
> ++- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
> +++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
> +++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
> ++
> ++ #if DEFAULT_LIBC == LIBC_GLIBC
> ++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> ++- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> +++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
> ++ #elif DEFAULT_LIBC == LIBC_UCLIBC
> ++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> ++- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> +++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
> ++ #elif DEFAULT_LIBC == LIBC_BIONIC
> ++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> ++- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> +++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
> +++#elif DEFAULT_LIBC == LIBC_MUSL
> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> +++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
> ++ #else
> ++ #error "Unsupported DEFAULT_LIBC"
> ++ #endif /* DEFAULT_LIBC */
> ++@@ -83,13 +88,13 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
> ++
> ++ #define LINUX_DYNAMIC_LINKER \
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
> ++- BIONIC_DYNAMIC_LINKER)
> +++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> ++ #define LINUX_DYNAMIC_LINKER32 \
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
> ++- BIONIC_DYNAMIC_LINKER32)
> +++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> ++ #define LINUX_DYNAMIC_LINKER64 \
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
> ++- BIONIC_DYNAMIC_LINKER64)
> +++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> ++
> ++ /* Determine whether the entire c99 runtime
> ++ is present in the runtime library. */
> ++diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
> ++--- a/gcc/config/linux.opt
> +++++ b/gcc/config/linux.opt
> ++@@ -30,3 +30,7 @@ Use GNU C library
> ++ muclibc
> ++ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
> ++ Use uClibc C library
> +++
> +++mmusl
> +++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
> +++Use musl C library
> ++diff --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
> ++--- a/gcc/config/mips/linux.h
> +++++ b/gcc/config/mips/linux.h
> ++@@ -63,6 +63,8 @@ along with GCC; see the file COPYING3. If not see
> ++
> ++ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> ++
> +++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
> +++
> ++ /* Borrowed from sparc/linux.h */
> ++ #undef LINK_SPEC
> ++ #define LINK_SPEC \
> ++diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
> ++--- a/gcc/ginclude/stddef.h
> +++++ b/gcc/ginclude/stddef.h
> ++@@ -184,6 +184,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
> ++ #ifndef _GCC_SIZE_T
> ++ #ifndef _SIZET_
> ++ #ifndef __size_t
> +++#ifndef __DEFINED_size_t /* musl */
> ++ #define __size_t__ /* BeOS */
> ++ #define __SIZE_T__ /* Cray Unicos/Mk */
> ++ #define _SIZE_T
> ++@@ -200,6 +201,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
> ++ #define ___int_size_t_h
> ++ #define _GCC_SIZE_T
> ++ #define _SIZET_
> +++#define __DEFINED_size_t /* musl */
> ++ #if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
> ++ /* __size_t is a typedef on FreeBSD 5!, must not trash it. */
> ++ #else
> ++@@ -214,6 +216,7 @@ typedef __SIZE_TYPE__ size_t;
> ++ typedef long ssize_t;
> ++ #endif /* __BEOS__ */
> ++ #endif /* !(defined (__GNUG__) && defined (size_t)) */
> +++#endif /* __DEFINED_size_t */
> ++ #endif /* __size_t */
> ++ #endif /* _SIZET_ */
> ++ #endif /* _GCC_SIZE_T */
> ++diff --git a/libgomp/config/posix/time.c b/libgomp/config/posix/time.c
> ++--- a/libgomp/config/posix/time.c
> +++++ b/libgomp/config/posix/time.c
> ++@@ -28,6 +28,8 @@
> ++ The following implementation uses the most simple POSIX routines.
> ++ If present, POSIX 4 clocks should be used instead. */
> ++
> +++#define _POSIX_C_SOURCE 199309L /* for clocks */
> +++
> ++ #include "libgomp.h"
> ++ #include <unistd.h>
> ++ #if TIME_WITH_SYS_TIME
> ++diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
> ++--- a/libstdc++-v3/configure.host
> +++++ b/libstdc++-v3/configure.host
> ++@@ -237,6 +237,13 @@ case "${host_os}" in
> ++ os_include_dir="os/bsd/freebsd"
> ++ ;;
> ++ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
> +++ # check for musl by target
> +++ case "${host_os}" in
> +++ *-musl*)
> +++ os_include_dir="os/generic"
> +++ ;;
> +++ *)
> +++
> ++ if [ "$uclibc" = "yes" ]; then
> ++ os_include_dir="os/uclibc"
> ++ elif [ "$bionic" = "yes" ]; then
> ++@@ -245,6 +252,9 @@ case "${host_os}" in
> ++ os_include_dir="os/gnu-linux"
> ++ fi
> ++ ;;
> +++
> +++ esac
> +++ ;;
> ++ hpux*)
> ++ os_include_dir="os/hpux"
> ++ ;;
> +diff --git a/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch b/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch
> +new file mode 100644
> +index 0000000..e28232d
> +--- /dev/null
> ++++ b/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch
> +@@ -0,0 +1,12 @@
> ++--- musl-1.1.3.orig/include/signal.h 2014-07-27 20:24:56.194773074 +0300
> +++++ musl-1.1.3/include/signal.h 2014-07-27 21:27:32.108772419 +0300
> ++@@ -246,6 +246,9 @@ typedef int sig_atomic_t;
> ++ void (*signal(int, void (*)(int)))(int);
> ++ int raise(int);
> ++
> +++#define __SIGRTMIN 32
> +++#define __SIGRTMAX (_NSIG - 1)
> +++
> ++ #ifdef __cplusplus
> ++ }
> ++ #endif
> +diff --git a/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch b/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch
> +new file mode 100644
> +index 0000000..a166cb5
> +--- /dev/null
> ++++ b/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch
> +@@ -0,0 +1,43 @@
> ++diff -Nupr musl-1.1.3.orig/include/ctype.h musl-1.1.3/include/ctype.h
> ++--- musl-1.1.3.orig/include/ctype.h 2014-07-30 10:06:03.630712195 +0300
> +++++ musl-1.1.3/include/ctype.h 2014-07-30 10:06:51.238713586 +0300
> ++@@ -7,6 +7,39 @@ extern "C" {
> ++
> ++ #include <features.h>
> ++
> +++#ifndef _ISbit
> +++/* These are all the characteristics of characters.
> +++ If there get to be more than 16 distinct characteristics,
> +++ many things must be changed that use `unsigned short int's.
> +++
> +++ The characteristics are stored always in network byte order (big
> +++ endian). We define the bit value interpretations here dependent on the
> +++ machine's byte order. */
> +++
> +++# include <endian.h>
> +++# if __BYTE_ORDER == __BIG_ENDIAN
> +++# define _ISbit(bit) (1 << (bit))
> +++# else /* __BYTE_ORDER == __LITTLE_ENDIAN */
> +++# define _ISbit(bit) ((bit) < 8 ? ((1 << (bit)) << 8) : ((1 << (bit)) >> 8))
> +++# endif
> +++
> +++enum
> +++{
> +++ _ISupper = _ISbit (0), /* UPPERCASE. */
> +++ _ISlower = _ISbit (1), /* lowercase. */
> +++ _ISalpha = _ISbit (2), /* Alphabetic. */
> +++ _ISdigit = _ISbit (3), /* Numeric. */
> +++ _ISxdigit = _ISbit (4), /* Hexadecimal numeric. */
> +++ _ISspace = _ISbit (5), /* Whitespace. */
> +++ _ISprint = _ISbit (6), /* Printing. */
> +++ _ISgraph = _ISbit (7), /* Graphical. */
> +++ _ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */
> +++ _IScntrl = _ISbit (9), /* Control character. */
> +++ _ISpunct = _ISbit (10), /* Punctuation. */
> +++ _ISalnum = _ISbit (11) /* Alphanumeric. */
> +++};
> +++#endif /* ! _ISbit */
> +++
> ++ int isalnum(int);
> ++ int isalpha(int);
> ++ int isblank(int);
> diff --git a/patches/experimental/gcc/4.8.0/0001-musl.patch b/patches/experimental/gcc/4.8.0/0001-musl.patch
> new file mode 100644
> index 0000000..e250298
> --- /dev/null
> +++ b/patches/experimental/gcc/4.8.0/0001-musl.patch
> @@ -0,0 +1,401 @@
> +This patch enables support for musl-libc in gcc.
> +
> +This patch is not supported by crosstool-ng and was originally found here:
> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.0-musl.diff
> +
> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
> +---
> +diff -r 6b1b8174ce29 gcc/config/arm/linux-eabi.h
> +--- a/gcc/config/arm/linux-eabi.h Fri Mar 29 16:41:20 2013 -0400
> ++++ b/gcc/config/arm/linux-eabi.h Fri Mar 29 16:41:23 2013 -0400
> +@@ -77,6 +77,10 @@
> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
> +
> ++/* musl has no "classic" (i.e. broken) mode */
> ++#undef MUSL_DYNAMIC_LINKER
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.so.1"
> ++
> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
> + use the GNU/Linux version, not the generic BPABI version. */
> + #undef LINK_SPEC
> +diff -r 6b1b8174ce29 libitm/config/arm/hwcap.cc
> +--- a/libitm/config/arm/hwcap.cc Fri Mar 29 16:41:20 2013 -0400
> ++++ b/libitm/config/arm/hwcap.cc Fri Mar 29 16:41:23 2013 -0400
> +@@ -40,7 +40,11 @@
> +
> + #ifdef __linux__
> + #include <unistd.h>
> ++#ifdef __GLIBC__
> + #include <sys/fcntl.h>
> ++#else
> ++#include <fcntl.h>
> ++#endif
> + #include <elf.h>
> +
> + static void __attribute__((constructor))
> +# HG changeset patch
> +# Parent 2b29df135cf04fe23c38301f6d0fc5796366aecf
> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
> +
> +diff -r 2b29df135cf0 gcc/config.gcc
> +--- a/gcc/config.gcc Fri Mar 29 16:41:11 2013 -0400
> ++++ b/gcc/config.gcc Fri Mar 29 16:41:14 2013 -0400
> +@@ -549,7 +549,7 @@
> + esac
> +
> + # Common C libraries.
> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
> +
> + # Common parts for widely ported systems.
> + case ${target} in
> +@@ -652,6 +652,9 @@
> + *-*-*uclibc*)
> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
> + ;;
> ++ *-*-*musl*)
> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
> ++ ;;
> + *)
> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
> + ;;
> +diff -r 2b29df135cf0 gcc/config/linux.h
> +--- a/gcc/config/linux.h Fri Mar 29 16:41:11 2013 -0400
> ++++ b/gcc/config/linux.h Fri Mar 29 16:41:14 2013 -0400
> +@@ -32,10 +32,12 @@
> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
> + #else
> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
> + #endif
> +
> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
> +@@ -53,18 +55,21 @@
> + uClibc or Bionic is the default C library and whether
> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
> +
> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
> +
> + #if DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
> + #elif DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
> + #elif DEFAULT_LIBC == LIBC_BIONIC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif /* DEFAULT_LIBC */
> +@@ -84,16 +89,16 @@
> +
> + #define GNU_USER_DYNAMIC_LINKER \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
> +- BIONIC_DYNAMIC_LINKER)
> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> + #define GNU_USER_DYNAMIC_LINKER32 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
> +- BIONIC_DYNAMIC_LINKER32)
> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> + #define GNU_USER_DYNAMIC_LINKER64 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
> +- BIONIC_DYNAMIC_LINKER64)
> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> + #define GNU_USER_DYNAMIC_LINKERX32 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
> +- BIONIC_DYNAMIC_LINKERX32)
> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
> +
> + /* Determine whether the entire c99 runtime
> + is present in the runtime library. */
> +diff -r 2b29df135cf0 gcc/config/linux.opt
> +--- a/gcc/config/linux.opt Fri Mar 29 16:41:11 2013 -0400
> ++++ b/gcc/config/linux.opt Fri Mar 29 16:41:14 2013 -0400
> +@@ -30,3 +30,7 @@
> + muclibc
> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
> + Use uClibc C library
> ++
> ++mmusl
> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
> ++Use musl C library
> +diff -r 2b29df135cf0 gcc/ginclude/stddef.h
> +--- a/gcc/ginclude/stddef.h Fri Mar 29 16:41:11 2013 -0400
> ++++ b/gcc/ginclude/stddef.h Fri Mar 29 16:41:14 2013 -0400
> +@@ -181,6 +181,7 @@
> + #ifndef _GCC_SIZE_T
> + #ifndef _SIZET_
> + #ifndef __size_t
> ++#ifndef __DEFINED_size_t /* musl */
> + #define __size_t__ /* BeOS */
> + #define __SIZE_T__ /* Cray Unicos/Mk */
> + #define _SIZE_T
> +@@ -197,6 +198,7 @@
> + #define ___int_size_t_h
> + #define _GCC_SIZE_T
> + #define _SIZET_
> ++#define __DEFINED_size_t /* musl */
> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
> + || defined(__FreeBSD_kernel__)
> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
> +@@ -214,6 +216,7 @@
> + typedef long ssize_t;
> + #endif /* __BEOS__ */
> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
> ++#endif /* __DEFINED_size_t */
> + #endif /* __size_t */
> + #endif /* _SIZET_ */
> + #endif /* _GCC_SIZE_T */
> +# HG changeset patch
> +# Parent 2b94537ce2496c88e7e797c617e5b95e8d7e4785
> +A fix for libgomp to correctly request a POSIX version for time support.
> +
> +diff -r 2b94537ce249 libgomp/config/posix/time.c
> +--- a/libgomp/config/posix/time.c Fri Mar 29 16:41:14 2013 -0400
> ++++ b/libgomp/config/posix/time.c Fri Mar 29 16:41:17 2013 -0400
> +@@ -28,6 +28,8 @@
> + The following implementation uses the most simple POSIX routines.
> + If present, POSIX 4 clocks should be used instead. */
> +
> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
> ++
> + #include "libgomp.h"
> + #include <unistd.h>
> + #if TIME_WITH_SYS_TIME
> +# HG changeset patch
> +# Parent f50bb54f331f73405131a30b4f353cfda1c70304
> +Use the generic implementation of libstdc++ primitives when we're on musl, not the glibc one.
> +
> +diff -r f50bb54f331f libstdc++-v3/configure.host
> +--- a/libstdc++-v3/configure.host Fri Mar 29 16:38:52 2013 -0400
> ++++ b/libstdc++-v3/configure.host Fri Mar 29 16:41:10 2013 -0400
> +@@ -264,6 +264,13 @@
> + os_include_dir="os/bsd/freebsd"
> + ;;
> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
> ++ # check for musl by target
> ++ case "${host_os}" in
> ++ *-musl*)
> ++ os_include_dir="os/generic"
> ++ ;;
> ++ *)
> ++
> + if [ "$uclibc" = "yes" ]; then
> + os_include_dir="os/uclibc"
> + elif [ "$bionic" = "yes" ]; then
> +@@ -272,6 +279,9 @@
> + os_include_dir="os/gnu-linux"
> + fi
> + ;;
> ++
> ++ esac
> ++ ;;
> + hpux*)
> + os_include_dir="os/hpux"
> + ;;
> +# HG changeset patch
> +# Parent 62831d7bf931658019ba16092c48375177d014b1
> +Support for mips-linux-musl.
> +
> +diff -r 62831d7bf931 gcc/config/mips/linux.h
> +--- a/gcc/config/mips/linux.h Fri Mar 29 16:41:23 2013 -0400
> ++++ b/gcc/config/mips/linux.h Fri Mar 29 16:41:25 2013 -0400
> +@@ -18,3 +18,5 @@
> + <http://www.gnu.org/licenses/>. */
> +
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> ++
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
> +# HG changeset patch
> +# Parent 2ffe76b215fdb082cbbc262536077627757fa9bf
> +Support for powerpc-linux-musl.
> +
> +diff -r 2ffe76b215fd gcc/config.gcc
> +--- a/gcc/config.gcc Fri Mar 29 16:41:26 2013 -0400
> ++++ b/gcc/config.gcc Fri Mar 29 16:41:28 2013 -0400
> +@@ -2112,6 +2112,10 @@
> + powerpc*-*-linux*paired*)
> + tm_file="${tm_file} rs6000/750cl.h" ;;
> + esac
> ++ case ${target} in
> ++ *-linux*-musl*)
> ++ enable_secureplt=yes ;;
> ++ esac
> + if test x${enable_secureplt} = xyes; then
> + tm_file="rs6000/secureplt.h ${tm_file}"
> + fi
> +diff -r 2ffe76b215fd gcc/config/rs6000/linux64.h
> +--- a/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:26 2013 -0400
> ++++ b/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:28 2013 -0400
> +@@ -364,17 +364,21 @@
> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
> + #if DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
> + #elif DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif
> + #define GNU_USER_DYNAMIC_LINKER32 \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> + #define GNU_USER_DYNAMIC_LINKER64 \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> +
> +
> + #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
> +diff -r 2ffe76b215fd gcc/config/rs6000/secureplt.h
> +--- a/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:26 2013 -0400
> ++++ b/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:28 2013 -0400
> +@@ -18,3 +18,4 @@
> + <http://www.gnu.org/licenses/>. */
> +
> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
> +diff -r 2ffe76b215fd gcc/config/rs6000/sysv4.h
> +--- a/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:26 2013 -0400
> ++++ b/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:28 2013 -0400
> +@@ -551,6 +551,9 @@
> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
> + #endif
> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
> ++#endif
> +
> + /* Pass -G xxx to the compiler and set correct endian mode. */
> + #define CC1_SPEC "%{G*} %(cc1_cpu) \
> +@@ -611,7 +614,8 @@
> + %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
> + %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
> + %{mcall-i960-old: --oformat elf32-powerpcle} \
> +- }}}}"
> ++ }}}} \
> ++%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
> +
> + /* Any specific OS flags. */
> + #define LINK_OS_SPEC "\
> +@@ -789,15 +793,18 @@
> +
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
> + #if DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif
> + #define GNU_USER_DYNAMIC_LINKER \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> +
> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
> + %{rdynamic:-export-dynamic} \
> +@@ -923,6 +930,7 @@
> + { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
> + { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
> +diff -r 2ffe76b215fd libgcc/config/rs6000/linux-unwind.h
> +--- a/libgcc/config/rs6000/linux-unwind.h Fri Mar 29 16:41:26 2013 -0400
> ++++ b/libgcc/config/rs6000/linux-unwind.h Fri Mar 29 16:41:28 2013 -0400
> +@@ -258,6 +258,7 @@
> +
> + return _URC_NO_REASON;
> + }
> ++#endif
> +
> + #define MD_FROB_UPDATE_CONTEXT frob_update_context
> +
> +# HG changeset patch
> +# Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
> +Support for i386-linux-musl and x86_64-linux-musl.
> +
> +diff -r 3ea10cd626cb gcc/config/i386/linux.h
> +--- a/gcc/config/i386/linux.h Fri Mar 29 16:41:17 2013 -0400
> ++++ b/gcc/config/i386/linux.h Fri Mar 29 16:41:20 2013 -0400
> +@@ -21,3 +21,4 @@
> +
> + #define GNU_USER_LINK_EMULATION "elf_i386"
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
> +diff -r 3ea10cd626cb gcc/config/i386/linux64.h
> +--- a/gcc/config/i386/linux64.h Fri Mar 29 16:41:17 2013 -0400
> ++++ b/gcc/config/i386/linux64.h Fri Mar 29 16:41:20 2013 -0400
> +@@ -30,3 +30,7 @@
> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
> ++
> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
> +diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
> +--- a/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:17 2013 -0400
> ++++ b/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:20 2013 -0400
> +@@ -25,16 +25,19 @@
> + #ifndef LIBITM_X86_TLS_H
> + #define LIBITM_X86_TLS_H 1
> +
> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
> ++#if defined(__GLIBC_PREREQ)
> ++#if __GLIBC_PREREQ(2, 10)
> + /* Use slots in the TCB head rather than __thread lookups.
> + GLIBC has reserved words 10 through 13 for TM. */
> + #define HAVE_ARCH_GTM_THREAD 1
> + #define HAVE_ARCH_GTM_THREAD_DISP 1
> + #endif
> ++#endif
> +
> + #include "config/generic/tls.h"
> +
> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
> ++#if defined(__GLIBC_PREREQ)
> ++#if __GLIBC_PREREQ(2, 10)
> + namespace GTM HIDDEN {
> +
> + #ifdef __x86_64__
> +@@ -101,5 +104,6 @@
> +
> + } // namespace GTM
> + #endif /* >= GLIBC 2.10 */
> ++#endif
> +
> + #endif // LIBITM_X86_TLS_H
> diff --git a/patches/experimental/gcc/4.8.1/0001-musl.patch b/patches/experimental/gcc/4.8.1/0001-musl.patch
> new file mode 100644
> index 0000000..2c1c0d3
> --- /dev/null
> +++ b/patches/experimental/gcc/4.8.1/0001-musl.patch
> @@ -0,0 +1,626 @@
> +This patch enables support for musl-libc in gcc.
> +
> +This patch is not supported by crosstool-ng and was originally found here:
> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.1-musl.diff
> +
> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
> +---
> +diff -r f50bb54f331f libstdc++-v3/configure.host
> +--- a/libstdc++-v3/configure.host Fri Mar 29 16:38:52 2013 -0400
> ++++ b/libstdc++-v3/configure.host Fri Mar 29 16:41:10 2013 -0400
> +@@ -264,6 +264,13 @@
> + os_include_dir="os/bsd/freebsd"
> + ;;
> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
> ++ # check for musl by target
> ++ case "${host_os}" in
> ++ *-musl*)
> ++ os_include_dir="os/generic"
> ++ ;;
> ++ *)
> ++
> + if [ "$uclibc" = "yes" ]; then
> + os_include_dir="os/uclibc"
> + elif [ "$bionic" = "yes" ]; then
> +@@ -272,6 +279,9 @@
> + os_include_dir="os/gnu-linux"
> + fi
> + ;;
> ++
> ++ esac
> ++ ;;
> + hpux*)
> + os_include_dir="os/hpux"
> + ;;
> +# HG changeset patch
> +# Parent 572f7b4d1c50cefde3aa2c43d06040fc308ad989
> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
> +
> +diff -r 572f7b4d1c50 gcc/config.gcc
> +--- a/gcc/config.gcc Sun Sep 08 22:58:18 2013 -0400
> ++++ b/gcc/config.gcc Mon Sep 09 12:48:34 2013 -0400
> +@@ -549,7 +549,7 @@
> + esac
> +
> + # Common C libraries.
> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
> +
> + # Common parts for widely ported systems.
> + case ${target} in
> +@@ -652,6 +652,9 @@
> + *-*-*uclibc*)
> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
> + ;;
> ++ *-*-*musl*)
> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
> ++ ;;
> + *)
> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
> + ;;
> +diff -r 572f7b4d1c50 gcc/config/linux.h
> +--- a/gcc/config/linux.h Sun Sep 08 22:58:18 2013 -0400
> ++++ b/gcc/config/linux.h Mon Sep 09 12:48:34 2013 -0400
> +@@ -32,10 +32,12 @@
> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
> + #else
> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
> + #endif
> +
> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
> +@@ -53,18 +55,21 @@
> + uClibc or Bionic is the default C library and whether
> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
> +
> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
> +
> + #if DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
> + #elif DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
> + #elif DEFAULT_LIBC == LIBC_BIONIC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif /* DEFAULT_LIBC */
> +@@ -84,21 +89,21 @@
> +
> + #define GNU_USER_DYNAMIC_LINKER \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
> +- BIONIC_DYNAMIC_LINKER)
> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> + #define GNU_USER_DYNAMIC_LINKER32 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
> +- BIONIC_DYNAMIC_LINKER32)
> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> + #define GNU_USER_DYNAMIC_LINKER64 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
> +- BIONIC_DYNAMIC_LINKER64)
> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> + #define GNU_USER_DYNAMIC_LINKERX32 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
> +- BIONIC_DYNAMIC_LINKERX32)
> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
> +
> + /* Determine whether the entire c99 runtime
> + is present in the runtime library. */
> + #undef TARGET_C99_FUNCTIONS
> +-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
> ++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
> +
> + /* Whether we have sincos that follows the GNU extension. */
> + #undef TARGET_HAS_SINCOS
> +@@ -107,3 +112,74 @@
> + /* Whether we have Bionic libc runtime */
> + #undef TARGET_HAS_BIONIC
> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
> ++
> ++/* musl avoids problematic includes by rearranging the include directories.
> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
> ++#if DEFAULT_LIBC == LIBC_MUSL
> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
> ++
> ++#ifdef LOCAL_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
> ++#endif
> ++
> ++#ifdef PREFIX_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
> ++#endif
> ++
> ++#ifdef CROSS_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
> ++#endif
> ++
> ++#ifdef TOOL_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
> ++#endif
> ++
> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
> ++#endif
> ++
> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
> ++#else
> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
> ++#endif
> ++
> ++#undef INCLUDE_DEFAULTS
> ++#define INCLUDE_DEFAULTS \
> ++ { \
> ++ INCLUDE_DEFAULTS_MUSL_GPP \
> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
> ++ { 0, 0, 0, 0, 0, 0 } \
> ++ }
> ++#endif
> +diff -r 572f7b4d1c50 gcc/config/linux.opt
> +--- a/gcc/config/linux.opt Sun Sep 08 22:58:18 2013 -0400
> ++++ b/gcc/config/linux.opt Mon Sep 09 12:48:34 2013 -0400
> +@@ -30,3 +30,7 @@
> + muclibc
> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
> + Use uClibc C library
> ++
> ++mmusl
> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
> ++Use musl C library
> +diff -r 572f7b4d1c50 gcc/ginclude/stddef.h
> +--- a/gcc/ginclude/stddef.h Sun Sep 08 22:58:18 2013 -0400
> ++++ b/gcc/ginclude/stddef.h Mon Sep 09 12:48:34 2013 -0400
> +@@ -181,6 +181,7 @@
> + #ifndef _GCC_SIZE_T
> + #ifndef _SIZET_
> + #ifndef __size_t
> ++#ifndef __DEFINED_size_t /* musl */
> + #define __size_t__ /* BeOS */
> + #define __SIZE_T__ /* Cray Unicos/Mk */
> + #define _SIZE_T
> +@@ -197,6 +198,7 @@
> + #define ___int_size_t_h
> + #define _GCC_SIZE_T
> + #define _SIZET_
> ++#define __DEFINED_size_t /* musl */
> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
> + || defined(__FreeBSD_kernel__)
> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
> +@@ -214,6 +216,7 @@
> + typedef long ssize_t;
> + #endif /* __BEOS__ */
> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
> ++#endif /* __DEFINED_size_t */
> + #endif /* __size_t */
> + #endif /* _SIZET_ */
> + #endif /* _GCC_SIZE_T */
> +# HG changeset patch
> +# Parent 2b94537ce2496c88e7e797c617e5b95e8d7e4785
> +A fix for libgomp to correctly request a POSIX version for time support.
> +
> +diff -r 2b94537ce249 libgomp/config/posix/time.c
> +--- a/libgomp/config/posix/time.c Fri Mar 29 16:41:14 2013 -0400
> ++++ b/libgomp/config/posix/time.c Fri Mar 29 16:41:17 2013 -0400
> +@@ -28,6 +28,8 @@
> + The following implementation uses the most simple POSIX routines.
> + If present, POSIX 4 clocks should be used instead. */
> +
> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
> ++
> + #include "libgomp.h"
> + #include <unistd.h>
> + #if TIME_WITH_SYS_TIME
> +diff -r 7cba4201a2ae libgcc/unwind-dw2-fde-dip.c
> +--- a/libgcc/unwind-dw2-fde-dip.c Sat Jul 27 22:53:05 2013 -0400
> ++++ b/libgcc/unwind-dw2-fde-dip.c Sat Jul 27 22:57:08 2013 -0400
> +@@ -46,33 +46,13 @@
> + #include "unwind-compat.h"
> + #include "gthr.h"
> +
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
> + # define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__BIONIC__)
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
> +-# define ElfW __ElfN
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__OpenBSD__)
> +-# define ElfW(type) Elf_##type
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(TARGET_DL_ITERATE_PHDR) \
> +- && defined(__sun__) && defined(__svr4__)
> +-# define USE_PT_GNU_EH_FRAME
> ++# ifdef __OpenBSD__
> ++# define ElfW(type) Elf_##typ
> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
> ++# define ElfW __ElfN
> ++# endif
> + #endif
> +
> + #if defined(USE_PT_GNU_EH_FRAME)
> +diff -r 75d9c38318a7 gcc/configure
> +--- a/gcc/configure Tue Sep 24 06:52:49 2013 -0400
> ++++ b/gcc/configure Tue Sep 24 06:54:33 2013 -0400
> +@@ -26736,6 +26736,9 @@
> + else
> + gcc_cv_libc_provides_ssp=no
> + case "$target" in
> ++ *-*-musl*)
> ++ # All versions of musl provide stack protector
> ++ gcc_cv_libc_provides_ssp=yes;;
> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
> + # glibc 2.4 and later provides __stack_chk_fail and
> + # either __stack_chk_guard, or TLS access to stack guard canary.
> +@@ -26769,6 +26772,7 @@
> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
> + # simply assert that glibc does provide this, which is true for all
> + # realistically usable GNU/Hurd configurations.
> ++ # All supported versions of musl provide it as well
> + gcc_cv_libc_provides_ssp=yes;;
> + *-*-darwin* | *-*-freebsd*)
> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
> +@@ -26851,6 +26855,9 @@
> + gcc_cv_target_dl_iterate_phdr=no
> + fi
> + ;;
> ++ *-linux-musl*)
> ++ gcc_cv_target_dl_iterate_phdr=yes
> ++ ;;
> + esac
> +
> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
> +diff -r 75d9c38318a7 gcc/configure.ac
> +--- a/gcc/configure.ac Tue Sep 24 06:52:49 2013 -0400
> ++++ b/gcc/configure.ac Tue Sep 24 06:54:33 2013 -0400
> +@@ -4719,6 +4719,9 @@
> + gcc_cv_libc_provides_ssp,
> + [gcc_cv_libc_provides_ssp=no
> + case "$target" in
> ++ *-*-musl*)
> ++ # All versions of musl provide stack protector
> ++ gcc_cv_libc_provides_ssp=yes;;
> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
> + [# glibc 2.4 and later provides __stack_chk_fail and
> + # either __stack_chk_guard, or TLS access to stack guard canary.
> +@@ -4752,6 +4755,7 @@
> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
> + # simply assert that glibc does provide this, which is true for all
> + # realistically usable GNU/Hurd configurations.
> ++ # All supported versions of musl provide it as well
> + gcc_cv_libc_provides_ssp=yes;;
> + *-*-darwin* | *-*-freebsd*)
> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
> +@@ -4817,6 +4821,9 @@
> + gcc_cv_target_dl_iterate_phdr=no
> + fi
> + ;;
> ++ *-linux-musl*)
> ++ gcc_cv_target_dl_iterate_phdr=yes
> ++ ;;
> + esac
> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
> +# HG changeset patch
> +# Parent 94e435662aff38e86c9ca0dff4bbf451e0190b34
> +Get rid of ever-broken fixincludes on musl.
> +
> +
> +diff -r 94e435662aff -r e27957848dc8 fixincludes/mkfixinc.sh
> +--- a/fixincludes/mkfixinc.sh Sat Jul 27 23:37:20 2013 -0400
> ++++ b/fixincludes/mkfixinc.sh Sat Jul 27 23:43:03 2013 -0400
> +@@ -19,7 +19,8 @@
> + powerpc-*-eabi* | \
> + powerpc-*-rtems* | \
> + powerpcle-*-eabisim* | \
> +- powerpcle-*-eabi* )
> ++ powerpcle-*-eabi* | \
> ++ *-musl* )
> + # IF there is no include fixing,
> + # THEN create a no-op fixer and exit
> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
> +# HG changeset patch
> +# Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
> +Support for i386-linux-musl and x86_64-linux-musl.
> +
> +diff -r 3ea10cd626cb gcc/config/i386/linux.h
> +--- a/gcc/config/i386/linux.h Fri Mar 29 16:41:17 2013 -0400
> ++++ b/gcc/config/i386/linux.h Fri Mar 29 16:41:20 2013 -0400
> +@@ -21,3 +21,4 @@
> +
> + #define GNU_USER_LINK_EMULATION "elf_i386"
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
> +diff -r 3ea10cd626cb gcc/config/i386/linux64.h
> +--- a/gcc/config/i386/linux64.h Fri Mar 29 16:41:17 2013 -0400
> ++++ b/gcc/config/i386/linux64.h Fri Mar 29 16:41:20 2013 -0400
> +@@ -30,3 +30,7 @@
> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
> ++
> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
> +diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
> +--- a/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:17 2013 -0400
> ++++ b/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:20 2013 -0400
> +@@ -25,16 +25,19 @@
> + #ifndef LIBITM_X86_TLS_H
> + #define LIBITM_X86_TLS_H 1
> +
> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
> ++#if defined(__GLIBC_PREREQ)
> ++#if __GLIBC_PREREQ(2, 10)
> + /* Use slots in the TCB head rather than __thread lookups.
> + GLIBC has reserved words 10 through 13 for TM. */
> + #define HAVE_ARCH_GTM_THREAD 1
> + #define HAVE_ARCH_GTM_THREAD_DISP 1
> + #endif
> ++#endif
> +
> + #include "config/generic/tls.h"
> +
> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
> ++#if defined(__GLIBC_PREREQ)
> ++#if __GLIBC_PREREQ(2, 10)
> + namespace GTM HIDDEN {
> +
> + #ifdef __x86_64__
> +@@ -101,5 +104,6 @@
> +
> + } // namespace GTM
> + #endif /* >= GLIBC 2.10 */
> ++#endif
> +
> + #endif // LIBITM_X86_TLS_H
> +# HG changeset patch
> +# Parent c3eb69047e35491fda9cd9ab1ee2ace1299c793c
> +Support for arm-linux-musl.
> +
> +diff -r c3eb69047e35 gcc/config/arm/linux-eabi.h
> +--- a/gcc/config/arm/linux-eabi.h Thu Sep 19 07:11:38 2013 -0400
> ++++ b/gcc/config/arm/linux-eabi.h Thu Sep 19 08:56:47 2013 -0400
> +@@ -77,6 +77,23 @@
> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
> +
> ++/* For ARM musl currently supports four dynamic linkers:
> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
> ++ musl does not support the legacy OABI mode.
> ++ All the dynamic linkers live in /lib.
> ++ We default to soft-float, EL. */
> ++#undef MUSL_DYNAMIC_LINKER
> ++#if TARGET_BIG_ENDIAN_DEFAULT
> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
> ++#endif
> ++#define MUSL_DYNAMIC_LINKER \
> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
> ++
> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
> + use the GNU/Linux version, not the generic BPABI version. */
> + #undef LINK_SPEC
> +diff -r c3eb69047e35 libitm/config/arm/hwcap.cc
> +--- a/libitm/config/arm/hwcap.cc Thu Sep 19 07:11:38 2013 -0400
> ++++ b/libitm/config/arm/hwcap.cc Thu Sep 19 08:56:47 2013 -0400
> +@@ -40,7 +40,11 @@
> +
> + #ifdef __linux__
> + #include <unistd.h>
> ++#ifdef __GLIBC__
> + #include <sys/fcntl.h>
> ++#else
> ++#include <fcntl.h>
> ++#endif
> + #include <elf.h>
> +
> + static void __attribute__((constructor))
> +# HG changeset patch
> +# Parent 4618ad6f036f1e944a5262ae5875dcdf62c41f8b
> +Support for mips-linux-musl.
> +
> +diff -r 4618ad6f036f gcc/config/mips/linux.h
> +--- a/gcc/config/mips/linux.h Thu Sep 19 08:56:47 2013 -0400
> ++++ b/gcc/config/mips/linux.h Thu Sep 19 09:08:11 2013 -0400
> +@@ -18,3 +18,10 @@
> + <http://www.gnu.org/licenses/>. */
> +
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> ++
> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
> ++#endif
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
> +# HG changeset patch
> +# Parent 2ffe76b215fdb082cbbc262536077627757fa9bf
> +Support for powerpc-linux-musl.
> +
> +diff -r 2ffe76b215fd gcc/config.gcc
> +--- a/gcc/config.gcc Fri Mar 29 16:41:26 2013 -0400
> ++++ b/gcc/config.gcc Fri Mar 29 16:41:28 2013 -0400
> +@@ -2112,6 +2112,10 @@
> + powerpc*-*-linux*paired*)
> + tm_file="${tm_file} rs6000/750cl.h" ;;
> + esac
> ++ case ${target} in
> ++ *-linux*-musl*)
> ++ enable_secureplt=yes ;;
> ++ esac
> + if test x${enable_secureplt} = xyes; then
> + tm_file="rs6000/secureplt.h ${tm_file}"
> + fi
> +diff -r 2ffe76b215fd gcc/config/rs6000/linux64.h
> +--- a/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:26 2013 -0400
> ++++ b/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:28 2013 -0400
> +@@ -364,17 +364,21 @@
> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
> + #if DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
> + #elif DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif
> + #define GNU_USER_DYNAMIC_LINKER32 \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> + #define GNU_USER_DYNAMIC_LINKER64 \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> +
> +
> + #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
> +diff -r 2ffe76b215fd gcc/config/rs6000/secureplt.h
> +--- a/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:26 2013 -0400
> ++++ b/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:28 2013 -0400
> +@@ -18,3 +18,4 @@
> + <http://www.gnu.org/licenses/>. */
> +
> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
> +diff -r 2ffe76b215fd gcc/config/rs6000/sysv4.h
> +--- a/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:26 2013 -0400
> ++++ b/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:28 2013 -0400
> +@@ -551,6 +551,9 @@
> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
> + #endif
> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
> ++#endif
> +
> + /* Pass -G xxx to the compiler and set correct endian mode. */
> + #define CC1_SPEC "%{G*} %(cc1_cpu) \
> +@@ -611,7 +614,8 @@
> + %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
> + %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
> + %{mcall-i960-old: --oformat elf32-powerpcle} \
> +- }}}}"
> ++ }}}} \
> ++%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
> +
> + /* Any specific OS flags. */
> + #define LINK_OS_SPEC "\
> +@@ -789,15 +793,18 @@
> +
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
> + #if DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif
> + #define GNU_USER_DYNAMIC_LINKER \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> +
> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
> + %{rdynamic:-export-dynamic} \
> +@@ -923,6 +930,7 @@
> + { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
> + { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
> +--- a/gcc/config/aarch64/aarch64-linux.h 2013-01-10 21:38:27.000000000 +0100
> ++++ b/gcc/config/aarch64/aarch64-linux.h 2013-09-12 21:39:34.004829498 +0200
> +@@ -21,7 +21,11 @@
> + #ifndef GCC_AARCH64_LINUX_H
> + #define GCC_AARCH64_LINUX_H
> +
> ++/* The AArch64 port currently supports two dynamic linkers:
> ++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
> ++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
> +
> + #define LINUX_TARGET_LINK_SPEC "%{h*} \
> + %{static:-Bstatic} \
> diff --git a/patches/experimental/gcc/4.8.2/0001-musl.patch b/patches/experimental/gcc/4.8.2/0001-musl.patch
> new file mode 100644
> index 0000000..3ff2e30
> --- /dev/null
> +++ b/patches/experimental/gcc/4.8.2/0001-musl.patch
> @@ -0,0 +1,750 @@
> +This patch enables support for musl-libc in gcc.
> +
> +This patch is not supported by crosstool-ng and was originally found here:
> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.2-musl.diff
> +
> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
> +---
> +diff -r df1a439b9058 libstdc++-v3/configure.host
> +--- a/libstdc++-v3/configure.host Tue Dec 31 14:52:24 2013 -0500
> ++++ b/libstdc++-v3/configure.host Tue Dec 31 14:54:49 2013 -0500
> +@@ -264,6 +264,13 @@
> + os_include_dir="os/bsd/freebsd"
> + ;;
> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
> ++ # check for musl by target
> ++ case "${host_os}" in
> ++ *-musl*)
> ++ os_include_dir="os/generic"
> ++ ;;
> ++ *)
> ++
> + if [ "$uclibc" = "yes" ]; then
> + os_include_dir="os/uclibc"
> + elif [ "$bionic" = "yes" ]; then
> +@@ -272,6 +279,9 @@
> + os_include_dir="os/gnu-linux"
> + fi
> + ;;
> ++
> ++ esac
> ++ ;;
> + hpux*)
> + os_include_dir="os/hpux"
> + ;;
> +# HG changeset patch
> +# Parent e5b4564f249f8634194bdabef4b3057d0e54ee97
> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
> +
> +diff -r e5b4564f249f gcc/config.gcc
> +--- a/gcc/config.gcc Tue Dec 31 14:54:49 2013 -0500
> ++++ b/gcc/config.gcc Tue Dec 31 14:54:52 2013 -0500
> +@@ -550,7 +550,7 @@
> + esac
> +
> + # Common C libraries.
> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
> +
> + # Common parts for widely ported systems.
> + case ${target} in
> +@@ -653,6 +653,9 @@
> + *-*-*uclibc*)
> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
> + ;;
> ++ *-*-*musl*)
> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
> ++ ;;
> + *)
> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
> + ;;
> +diff -r e5b4564f249f gcc/config/linux.h
> +--- a/gcc/config/linux.h Tue Dec 31 14:54:49 2013 -0500
> ++++ b/gcc/config/linux.h Tue Dec 31 14:54:52 2013 -0500
> +@@ -32,10 +32,12 @@
> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
> + #else
> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
> + #endif
> +
> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
> +@@ -53,18 +55,21 @@
> + uClibc or Bionic is the default C library and whether
> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
> +
> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
> +
> + #if DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
> + #elif DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
> + #elif DEFAULT_LIBC == LIBC_BIONIC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif /* DEFAULT_LIBC */
> +@@ -84,21 +89,21 @@
> +
> + #define GNU_USER_DYNAMIC_LINKER \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
> +- BIONIC_DYNAMIC_LINKER)
> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> + #define GNU_USER_DYNAMIC_LINKER32 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
> +- BIONIC_DYNAMIC_LINKER32)
> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> + #define GNU_USER_DYNAMIC_LINKER64 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
> +- BIONIC_DYNAMIC_LINKER64)
> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> + #define GNU_USER_DYNAMIC_LINKERX32 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
> +- BIONIC_DYNAMIC_LINKERX32)
> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
> +
> + /* Determine whether the entire c99 runtime
> + is present in the runtime library. */
> + #undef TARGET_C99_FUNCTIONS
> +-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
> ++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
> +
> + /* Whether we have sincos that follows the GNU extension. */
> + #undef TARGET_HAS_SINCOS
> +@@ -107,3 +112,74 @@
> + /* Whether we have Bionic libc runtime */
> + #undef TARGET_HAS_BIONIC
> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
> ++
> ++/* musl avoids problematic includes by rearranging the include directories.
> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
> ++#if DEFAULT_LIBC == LIBC_MUSL
> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
> ++
> ++#ifdef LOCAL_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
> ++#endif
> ++
> ++#ifdef PREFIX_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
> ++#endif
> ++
> ++#ifdef CROSS_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
> ++#endif
> ++
> ++#ifdef TOOL_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
> ++#endif
> ++
> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
> ++#endif
> ++
> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
> ++#else
> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
> ++#endif
> ++
> ++#undef INCLUDE_DEFAULTS
> ++#define INCLUDE_DEFAULTS \
> ++ { \
> ++ INCLUDE_DEFAULTS_MUSL_GPP \
> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
> ++ { 0, 0, 0, 0, 0, 0 } \
> ++ }
> ++#endif
> +diff -r e5b4564f249f gcc/config/linux.opt
> +--- a/gcc/config/linux.opt Tue Dec 31 14:54:49 2013 -0500
> ++++ b/gcc/config/linux.opt Tue Dec 31 14:54:52 2013 -0500
> +@@ -30,3 +30,7 @@
> + muclibc
> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
> + Use uClibc C library
> ++
> ++mmusl
> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
> ++Use musl C library
> +diff -r e5b4564f249f gcc/ginclude/stddef.h
> +--- a/gcc/ginclude/stddef.h Tue Dec 31 14:54:49 2013 -0500
> ++++ b/gcc/ginclude/stddef.h Tue Dec 31 14:54:52 2013 -0500
> +@@ -181,6 +181,7 @@
> + #ifndef _GCC_SIZE_T
> + #ifndef _SIZET_
> + #ifndef __size_t
> ++#ifndef __DEFINED_size_t /* musl */
> + #define __size_t__ /* BeOS */
> + #define __SIZE_T__ /* Cray Unicos/Mk */
> + #define _SIZE_T
> +@@ -197,6 +198,7 @@
> + #define ___int_size_t_h
> + #define _GCC_SIZE_T
> + #define _SIZET_
> ++#define __DEFINED_size_t /* musl */
> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
> + || defined(__FreeBSD_kernel__)
> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
> +@@ -214,6 +216,7 @@
> + typedef long ssize_t;
> + #endif /* __BEOS__ */
> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
> ++#endif /* __DEFINED_size_t */
> + #endif /* __size_t */
> + #endif /* _SIZET_ */
> + #endif /* _GCC_SIZE_T */
> +# HG changeset patch
> +# Parent e08e44e39f5edde422f444487422046147d5821e
> +A fix for libgomp to correctly request a POSIX version for time support.
> +
> +diff -r e08e44e39f5e libgomp/config/posix/time.c
> +--- a/libgomp/config/posix/time.c Tue Dec 31 14:54:52 2013 -0500
> ++++ b/libgomp/config/posix/time.c Tue Dec 31 14:54:55 2013 -0500
> +@@ -28,6 +28,8 @@
> + The following implementation uses the most simple POSIX routines.
> + If present, POSIX 4 clocks should be used instead. */
> +
> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
> ++
> + #include "libgomp.h"
> + #include <unistd.h>
> + #if TIME_WITH_SYS_TIME
> +diff -r 809c85574bfe libgcc/unwind-dw2-fde-dip.c
> +--- a/libgcc/unwind-dw2-fde-dip.c Tue Dec 31 14:54:55 2013 -0500
> ++++ b/libgcc/unwind-dw2-fde-dip.c Tue Dec 31 14:54:58 2013 -0500
> +@@ -46,33 +46,13 @@
> + #include "unwind-compat.h"
> + #include "gthr.h"
> +
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
> + # define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__BIONIC__)
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
> +-# define ElfW __ElfN
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__OpenBSD__)
> +-# define ElfW(type) Elf_##type
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(TARGET_DL_ITERATE_PHDR) \
> +- && defined(__sun__) && defined(__svr4__)
> +-# define USE_PT_GNU_EH_FRAME
> ++# ifdef __OpenBSD__
> ++# define ElfW(type) Elf_##type
> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
> ++# define ElfW __ElfN
> ++# endif
> + #endif
> +
> + #if defined(USE_PT_GNU_EH_FRAME)
> +diff -r 03604918697c gcc/configure
> +--- a/gcc/configure Tue Dec 31 14:54:58 2013 -0500
> ++++ b/gcc/configure Tue Dec 31 14:55:01 2013 -0500
> +@@ -26739,6 +26739,9 @@
> + else
> + gcc_cv_libc_provides_ssp=no
> + case "$target" in
> ++ *-*-musl*)
> ++ # All versions of musl provide stack protector
> ++ gcc_cv_libc_provides_ssp=yes;;
> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
> + # glibc 2.4 and later provides __stack_chk_fail and
> + # either __stack_chk_guard, or TLS access to stack guard canary.
> +@@ -26772,6 +26775,7 @@
> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
> + # simply assert that glibc does provide this, which is true for all
> + # realistically usable GNU/Hurd configurations.
> ++ # All supported versions of musl provide it as well
> + gcc_cv_libc_provides_ssp=yes;;
> + *-*-darwin* | *-*-freebsd*)
> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
> +@@ -26854,6 +26858,9 @@
> + gcc_cv_target_dl_iterate_phdr=no
> + fi
> + ;;
> ++ *-linux-musl*)
> ++ gcc_cv_target_dl_iterate_phdr=yes
> ++ ;;
> + esac
> +
> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
> +diff -r 03604918697c gcc/configure.ac
> +--- a/gcc/configure.ac Tue Dec 31 14:54:58 2013 -0500
> ++++ b/gcc/configure.ac Tue Dec 31 14:55:01 2013 -0500
> +@@ -4722,6 +4722,9 @@
> + gcc_cv_libc_provides_ssp,
> + [gcc_cv_libc_provides_ssp=no
> + case "$target" in
> ++ *-*-musl*)
> ++ # All versions of musl provide stack protector
> ++ gcc_cv_libc_provides_ssp=yes;;
> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
> + [# glibc 2.4 and later provides __stack_chk_fail and
> + # either __stack_chk_guard, or TLS access to stack guard canary.
> +@@ -4755,6 +4758,7 @@
> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
> + # simply assert that glibc does provide this, which is true for all
> + # realistically usable GNU/Hurd configurations.
> ++ # All supported versions of musl provide it as well
> + gcc_cv_libc_provides_ssp=yes;;
> + *-*-darwin* | *-*-freebsd*)
> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
> +@@ -4820,6 +4824,9 @@
> + gcc_cv_target_dl_iterate_phdr=no
> + fi
> + ;;
> ++ *-linux-musl*)
> ++ gcc_cv_target_dl_iterate_phdr=yes
> ++ ;;
> + esac
> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
> +# HG changeset patch
> +# Parent 600a8a422ccaf5627ad1f5a138e7398df2b9e9d8
> +Get rid of ever-broken fixincludes on musl.
> +
> +diff -r 600a8a422cca fixincludes/mkfixinc.sh
> +--- a/fixincludes/mkfixinc.sh Tue Dec 31 14:55:01 2013 -0500
> ++++ b/fixincludes/mkfixinc.sh Tue Dec 31 14:55:04 2013 -0500
> +@@ -19,7 +19,8 @@
> + powerpc-*-eabi* | \
> + powerpc-*-rtems* | \
> + powerpcle-*-eabisim* | \
> +- powerpcle-*-eabi* )
> ++ powerpcle-*-eabi* | \
> ++ *-musl* )
> + # IF there is no include fixing,
> + # THEN create a no-op fixer and exit
> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
> +# HG changeset patch
> +# Parent 4696c3bf3d913eca88e9385ea9717541dfe1e033
> +Support for i386-linux-musl and x86_64-linux-musl.
> +
> +diff -r 4696c3bf3d91 gcc/config/i386/linux.h
> +--- a/gcc/config/i386/linux.h Tue Dec 31 14:55:04 2013 -0500
> ++++ b/gcc/config/i386/linux.h Tue Dec 31 14:55:08 2013 -0500
> +@@ -21,3 +21,4 @@
> +
> + #define GNU_USER_LINK_EMULATION "elf_i386"
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
> +diff -r 4696c3bf3d91 gcc/config/i386/linux64.h
> +--- a/gcc/config/i386/linux64.h Tue Dec 31 14:55:04 2013 -0500
> ++++ b/gcc/config/i386/linux64.h Tue Dec 31 14:55:08 2013 -0500
> +@@ -30,3 +30,7 @@
> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
> ++
> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
> +diff -r 4696c3bf3d91 libitm/config/linux/x86/tls.h
> +--- a/libitm/config/linux/x86/tls.h Tue Dec 31 14:55:04 2013 -0500
> ++++ b/libitm/config/linux/x86/tls.h Tue Dec 31 14:55:08 2013 -0500
> +@@ -25,16 +25,19 @@
> + #ifndef LIBITM_X86_TLS_H
> + #define LIBITM_X86_TLS_H 1
> +
> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
> ++#if defined(__GLIBC_PREREQ)
> ++#if __GLIBC_PREREQ(2, 10)
> + /* Use slots in the TCB head rather than __thread lookups.
> + GLIBC has reserved words 10 through 13 for TM. */
> + #define HAVE_ARCH_GTM_THREAD 1
> + #define HAVE_ARCH_GTM_THREAD_DISP 1
> + #endif
> ++#endif
> +
> + #include "config/generic/tls.h"
> +
> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
> ++#if defined(__GLIBC_PREREQ)
> ++#if __GLIBC_PREREQ(2, 10)
> + namespace GTM HIDDEN {
> +
> + #ifdef __x86_64__
> +@@ -101,5 +104,6 @@
> +
> + } // namespace GTM
> + #endif /* >= GLIBC 2.10 */
> ++#endif
> +
> + #endif // LIBITM_X86_TLS_H
> +# HG changeset patch
> +# Parent 6738fd6f6fcc2a72f2ba527bda3325642af26885
> +Support for arm-linux-musl.
> +
> +diff -r 6738fd6f6fcc gcc/config/arm/linux-eabi.h
> +--- a/gcc/config/arm/linux-eabi.h Tue Dec 31 14:55:08 2013 -0500
> ++++ b/gcc/config/arm/linux-eabi.h Tue Dec 31 14:55:11 2013 -0500
> +@@ -77,6 +77,23 @@
> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
> +
> ++/* For ARM musl currently supports four dynamic linkers:
> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
> ++ musl does not support the legacy OABI mode.
> ++ All the dynamic linkers live in /lib.
> ++ We default to soft-float, EL. */
> ++#undef MUSL_DYNAMIC_LINKER
> ++#if TARGET_BIG_ENDIAN_DEFAULT
> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
> ++#endif
> ++#define MUSL_DYNAMIC_LINKER \
> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
> ++
> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
> + use the GNU/Linux version, not the generic BPABI version. */
> + #undef LINK_SPEC
> +diff -r 6738fd6f6fcc libitm/config/arm/hwcap.cc
> +--- a/libitm/config/arm/hwcap.cc Tue Dec 31 14:55:08 2013 -0500
> ++++ b/libitm/config/arm/hwcap.cc Tue Dec 31 14:55:11 2013 -0500
> +@@ -40,7 +40,11 @@
> +
> + #ifdef __linux__
> + #include <unistd.h>
> ++#ifdef __GLIBC__
> + #include <sys/fcntl.h>
> ++#else
> ++#include <fcntl.h>
> ++#endif
> + #include <elf.h>
> +
> + static void __attribute__((constructor))
> +# HG changeset patch
> +# Parent 7d7383f638705a01fdc18e0e7e0c9cdb6387fc5d
> +Support for mips-linux-musl.
> +
> +diff -r 7d7383f63870 gcc/config/mips/linux.h
> +--- a/gcc/config/mips/linux.h Tue Dec 31 14:55:11 2013 -0500
> ++++ b/gcc/config/mips/linux.h Tue Dec 31 14:55:14 2013 -0500
> +@@ -18,3 +18,10 @@
> + <http://www.gnu.org/licenses/>. */
> +
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> ++
> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
> ++#endif
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
> +# HG changeset patch
> +# Parent 89df6d7e91c686da676ce27ef9b9d10522810c26
> +Support for powerpc-linux-musl.
> +
> +diff -r 89df6d7e91c6 gcc/config.gcc
> +--- a/gcc/config.gcc Tue Dec 31 14:55:14 2013 -0500
> ++++ b/gcc/config.gcc Tue Dec 31 14:55:17 2013 -0500
> +@@ -2117,6 +2117,10 @@
> + powerpc*-*-linux*paired*)
> + tm_file="${tm_file} rs6000/750cl.h" ;;
> + esac
> ++ case ${target} in
> ++ *-linux*-musl*)
> ++ enable_secureplt=yes ;;
> ++ esac
> + if test x${enable_secureplt} = xyes; then
> + tm_file="rs6000/secureplt.h ${tm_file}"
> + fi
> +diff -r 89df6d7e91c6 gcc/config/rs6000/linux64.h
> +--- a/gcc/config/rs6000/linux64.h Tue Dec 31 14:55:14 2013 -0500
> ++++ b/gcc/config/rs6000/linux64.h Tue Dec 31 14:55:17 2013 -0500
> +@@ -354,17 +354,21 @@
> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
> + #if DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
> + #elif DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif
> + #define GNU_USER_DYNAMIC_LINKER32 \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> + #define GNU_USER_DYNAMIC_LINKER64 \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> +
> + #undef DEFAULT_ASM_ENDIAN
> + #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
> +diff -r 89df6d7e91c6 gcc/config/rs6000/secureplt.h
> +--- a/gcc/config/rs6000/secureplt.h Tue Dec 31 14:55:14 2013 -0500
> ++++ b/gcc/config/rs6000/secureplt.h Tue Dec 31 14:55:17 2013 -0500
> +@@ -18,3 +18,4 @@
> + <http://www.gnu.org/licenses/>. */
> +
> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
> +diff -r 89df6d7e91c6 gcc/config/rs6000/sysv4.h
> +--- a/gcc/config/rs6000/sysv4.h Tue Dec 31 14:55:14 2013 -0500
> ++++ b/gcc/config/rs6000/sysv4.h Tue Dec 31 14:55:17 2013 -0500
> +@@ -550,6 +550,9 @@
> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
> + #endif
> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
> ++#endif
> +
> + /* Pass -G xxx to the compiler and set correct endian mode. */
> + #define CC1_SPEC "%{G*} %(cc1_cpu)" \
> +@@ -600,7 +603,8 @@
> +
> + /* Override the default target of the linker. */
> + #define LINK_TARGET_SPEC \
> +- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
> ++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
> ++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
> +
> + /* Any specific OS flags. */
> + #define LINK_OS_SPEC "\
> +@@ -778,15 +782,18 @@
> +
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
> + #if DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif
> + #define GNU_USER_DYNAMIC_LINKER \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> +
> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
> + %{rdynamic:-export-dynamic} \
> +@@ -912,6 +919,7 @@
> + { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
> + { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
> +diff -r d7ce17b2f2d6 gcc/config/aarch64/aarch64-linux.h
> +--- a/gcc/config/aarch64/aarch64-linux.h Tue Dec 31 14:55:17 2013 -0500
> ++++ b/gcc/config/aarch64/aarch64-linux.h Tue Dec 31 14:55:20 2013 -0500
> +@@ -21,7 +21,11 @@
> + #ifndef GCC_AARCH64_LINUX_H
> + #define GCC_AARCH64_LINUX_H
> +
> ++/* The AArch64 port currently supports two dynamic linkers:
> ++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
> ++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
> +
> + #define CPP_SPEC "%{pthread:-D_REENTRANT}"
> +
> +# HG changeset patch
> +# Parent f2601e4063d0d58d8ab04185e8baefd560d09496
> +Microblaze support (again).
> +
> +
> +diff -r f2601e4063d0 -r 0736dfe1aa0d gcc/config/microblaze/linux.h
> +--- a/gcc/config/microblaze/linux.h Tue Dec 31 14:55:20 2013 -0500
> ++++ b/gcc/config/microblaze/linux.h Tue Dec 31 15:09:52 2013 -0500
> +@@ -25,7 +25,22 @@
> + #undef TLS_NEEDS_GOT
> + #define TLS_NEEDS_GOT 1
> +
> +-#define DYNAMIC_LINKER "/lib/ld.so.1"
> ++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
> ++#endif
> ++
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
> ++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> ++
> ++#if DEFAULT_LIBC == LIBC_MUSL
> ++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
> ++#else
> ++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
> ++#endif
> ++
> ++
> + #undef SUBTARGET_EXTRA_SPECS
> + #define SUBTARGET_EXTRA_SPECS \
> + { "dynamic_linker", DYNAMIC_LINKER }
> +From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
> +From: David Holsgrove <david.holsgrove@xilinx.com>
> +Date: Fri, 28 Sep 2012 16:32:03 +1000
> +Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
> + microblaze.h
> +
> +Fixes warnings like;
> +
> +warning: format '%zX' expects argument of type 'size_t',
> +but argument 3 has type 'unsigned int' [-Wformat]
> +
> +Changelog
> +
> +2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
> +
> + * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
> + and PTRDIFF_TYPE.
> +
> +Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
> +---
> + gcc/config/microblaze/microblaze.h | 6 ++++++
> + 1 file changed, 6 insertions(+)
> +
> +diff --git a/gcc/config/microblaze/microblaze.h b/gcc/config/microblaze/microblaze.h
> +index 19cdfed..e772a3f 100644
> +--- a/gcc/config/microblaze/microblaze.h
> ++++ b/gcc/config/microblaze/microblaze.h
> +@@ -213,6 +213,12 @@ extern enum pipeline_type microblaze_pipe;
> + #define STRICT_ALIGNMENT 1
> + #define PCC_BITFIELD_TYPE_MATTERS 1
> +
> ++#undef SIZE_TYPE
> ++#define SIZE_TYPE "unsigned int"
> ++
> ++#undef PTRDIFF_TYPE
> ++#define PTRDIFF_TYPE "int"
> ++
> + #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
> + ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
> + && (ALIGN) < BITS_PER_WORD \
> +--
> +1.7.9.5
> +
> +--- gcc-4.8.2.org/gcc/config/sh/linux.h
> ++++ gcc-4.8.2/gcc/config/sh/linux.h
> +@@ -43,7 +43,14 @@
> +
> + #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
> +
> ++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
> ++#define MUSL_DYNAMIC_LINKER_E "eb"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E
> ++#endif
> ++
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
> +
> + #undef SUBTARGET_LINK_EMUL_SUFFIX
> + #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
> +--- gcc-4.8.2.org/gcc/config/sh/sh.c
> ++++ gcc-4.8.2/gcc/config/sh/sh.c
> +@@ -22,8 +22,17 @@
> + /* FIXME: This is a temporary hack, so that we can include <algorithm>
> + below. <algorithm> will try to include <cstdlib> which will reference
> + malloc & co, which are poisoned by "system.h". The proper solution is
> +- to include <cstdlib> in "system.h" instead of <stdlib.h>. */
> ++ to include <cstdlib> in "system.h" instead of <stdlib.h>.
> ++ It's also a temporary hack as the inclusion of sstream will cause inclusion
> ++ of libc's pthread.h (istream->ios->ios_base->atomicity->gth->gthr-default)
> ++ which in turn includes sched.h, which defines the CPU_ALLOC, which uses
> ++ the poisoned calloc. the proper fix would be to shield the poison pragmas
> ++ with some define that is only set when gcc developers do testing.
> ++*/
> + #include <cstdlib>
> ++#include <sstream>
> ++#include <vector>
> ++#include <algorithm>
> +
> + #include "config.h"
> + #include "system.h"
> +@@ -59,10 +68,6 @@
> + #include "alloc-pool.h"
> + #include "tm-constrs.h"
> + #include "opts.h"
> +-
> +-#include <sstream>
> +-#include <vector>
> +-#include <algorithm>
> +
> + int code_for_indirect_jump_scratch = CODE_FOR_indirect_jump_scratch;
> +
> diff --git a/patches/experimental/gcc/4.8.3/0001-musl.patch b/patches/experimental/gcc/4.8.3/0001-musl.patch
> new file mode 100644
> index 0000000..3e23402
> --- /dev/null
> +++ b/patches/experimental/gcc/4.8.3/0001-musl.patch
> @@ -0,0 +1,736 @@
> +This patch enables support for musl-libc in gcc.
> +
> +This patch is not supported by crosstool-ng and was originally found here:
> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.3-musl.diff
> +
> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
> +---
> +diff -r 3265a3936a0f libstdc++-v3/configure.host
> +--- a/libstdc++-v3/configure.host Tue May 27 17:11:50 2014 -0400
> ++++ b/libstdc++-v3/configure.host Tue May 27 17:18:49 2014 -0400
> +@@ -264,6 +264,13 @@
> + os_include_dir="os/bsd/freebsd"
> + ;;
> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
> ++ # check for musl by target
> ++ case "${host_os}" in
> ++ *-musl*)
> ++ os_include_dir="os/generic"
> ++ ;;
> ++ *)
> ++
> + if [ "$uclibc" = "yes" ]; then
> + os_include_dir="os/uclibc"
> + elif [ "$bionic" = "yes" ]; then
> +@@ -272,6 +279,9 @@
> + os_include_dir="os/gnu-linux"
> + fi
> + ;;
> ++
> ++ esac
> ++ ;;
> + hpux*)
> + os_include_dir="os/hpux"
> + ;;
> +# HG changeset patch
> +# Parent feba6705f7e390f69e474a7c761a0eb7add7d414
> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
> +
> +diff -r feba6705f7e3 gcc/config.gcc
> +--- a/gcc/config.gcc Tue May 27 17:18:49 2014 -0400
> ++++ b/gcc/config.gcc Tue May 27 17:18:52 2014 -0400
> +@@ -550,7 +550,7 @@
> + esac
> +
> + # Common C libraries.
> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
> +
> + # Common parts for widely ported systems.
> + case ${target} in
> +@@ -653,6 +653,9 @@
> + *-*-*uclibc*)
> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
> + ;;
> ++ *-*-*musl*)
> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
> ++ ;;
> + *)
> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
> + ;;
> +diff -r feba6705f7e3 gcc/config/linux.h
> +--- a/gcc/config/linux.h Tue May 27 17:18:49 2014 -0400
> ++++ b/gcc/config/linux.h Tue May 27 17:18:52 2014 -0400
> +@@ -32,10 +32,12 @@
> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
> + #else
> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
> + #endif
> +
> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
> +@@ -53,18 +55,21 @@
> + uClibc or Bionic is the default C library and whether
> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
> +
> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
> +
> + #if DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
> + #elif DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
> + #elif DEFAULT_LIBC == LIBC_BIONIC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif /* DEFAULT_LIBC */
> +@@ -84,21 +89,21 @@
> +
> + #define GNU_USER_DYNAMIC_LINKER \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
> +- BIONIC_DYNAMIC_LINKER)
> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> + #define GNU_USER_DYNAMIC_LINKER32 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
> +- BIONIC_DYNAMIC_LINKER32)
> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> + #define GNU_USER_DYNAMIC_LINKER64 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
> +- BIONIC_DYNAMIC_LINKER64)
> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> + #define GNU_USER_DYNAMIC_LINKERX32 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
> +- BIONIC_DYNAMIC_LINKERX32)
> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
> +
> + /* Determine whether the entire c99 runtime
> + is present in the runtime library. */
> + #undef TARGET_C99_FUNCTIONS
> +-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
> ++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
> +
> + /* Whether we have sincos that follows the GNU extension. */
> + #undef TARGET_HAS_SINCOS
> +@@ -107,3 +112,74 @@
> + /* Whether we have Bionic libc runtime */
> + #undef TARGET_HAS_BIONIC
> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
> ++
> ++/* musl avoids problematic includes by rearranging the include directories.
> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
> ++#if DEFAULT_LIBC == LIBC_MUSL
> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
> ++
> ++#ifdef LOCAL_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
> ++#endif
> ++
> ++#ifdef PREFIX_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
> ++#endif
> ++
> ++#ifdef CROSS_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
> ++#endif
> ++
> ++#ifdef TOOL_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
> ++#endif
> ++
> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
> ++#endif
> ++
> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
> ++#else
> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
> ++#endif
> ++
> ++#undef INCLUDE_DEFAULTS
> ++#define INCLUDE_DEFAULTS \
> ++ { \
> ++ INCLUDE_DEFAULTS_MUSL_GPP \
> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
> ++ { 0, 0, 0, 0, 0, 0 } \
> ++ }
> ++#endif
> +diff -r feba6705f7e3 gcc/config/linux.opt
> +--- a/gcc/config/linux.opt Tue May 27 17:18:49 2014 -0400
> ++++ b/gcc/config/linux.opt Tue May 27 17:18:52 2014 -0400
> +@@ -30,3 +30,7 @@
> + muclibc
> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
> + Use uClibc C library
> ++
> ++mmusl
> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
> ++Use musl C library
> +diff -r feba6705f7e3 gcc/ginclude/stddef.h
> +--- a/gcc/ginclude/stddef.h Tue May 27 17:18:49 2014 -0400
> ++++ b/gcc/ginclude/stddef.h Tue May 27 17:18:52 2014 -0400
> +@@ -181,6 +181,7 @@
> + #ifndef _GCC_SIZE_T
> + #ifndef _SIZET_
> + #ifndef __size_t
> ++#ifndef __DEFINED_size_t /* musl */
> + #define __size_t__ /* BeOS */
> + #define __SIZE_T__ /* Cray Unicos/Mk */
> + #define _SIZE_T
> +@@ -197,6 +198,7 @@
> + #define ___int_size_t_h
> + #define _GCC_SIZE_T
> + #define _SIZET_
> ++#define __DEFINED_size_t /* musl */
> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
> + || defined(__FreeBSD_kernel__)
> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
> +@@ -214,6 +216,7 @@
> + typedef long ssize_t;
> + #endif /* __BEOS__ */
> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
> ++#endif /* __DEFINED_size_t */
> + #endif /* __size_t */
> + #endif /* _SIZET_ */
> + #endif /* _GCC_SIZE_T */
> +# HG changeset patch
> +# Parent 77fd601051c4644b37838a8e5305c6971feab94f
> +A fix for libgomp to correctly request a POSIX version for time support.
> +
> +diff -r 77fd601051c4 libgomp/config/posix/time.c
> +--- a/libgomp/config/posix/time.c Tue May 27 17:18:52 2014 -0400
> ++++ b/libgomp/config/posix/time.c Tue May 27 17:18:55 2014 -0400
> +@@ -28,6 +28,8 @@
> + The following implementation uses the most simple POSIX routines.
> + If present, POSIX 4 clocks should be used instead. */
> +
> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
> ++
> + #include "libgomp.h"
> + #include <unistd.h>
> + #if TIME_WITH_SYS_TIME
> +diff -r abebeb8818d8 libgcc/unwind-dw2-fde-dip.c
> +--- a/libgcc/unwind-dw2-fde-dip.c Tue May 27 17:18:55 2014 -0400
> ++++ b/libgcc/unwind-dw2-fde-dip.c Tue May 27 17:18:58 2014 -0400
> +@@ -46,33 +46,13 @@
> + #include "unwind-compat.h"
> + #include "gthr.h"
> +
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
> + # define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__BIONIC__)
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
> +-# define ElfW __ElfN
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__OpenBSD__)
> +-# define ElfW(type) Elf_##type
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(TARGET_DL_ITERATE_PHDR) \
> +- && defined(__sun__) && defined(__svr4__)
> +-# define USE_PT_GNU_EH_FRAME
> ++# ifdef __OpenBSD__
> ++# define ElfW(type) Elf_##type
> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
> ++# define ElfW __ElfN
> ++# endif
> + #endif
> +
> + #if defined(USE_PT_GNU_EH_FRAME)
> +diff -r 68e6894cdeea gcc/configure
> +--- a/gcc/configure Tue May 27 17:18:58 2014 -0400
> ++++ b/gcc/configure Tue May 27 17:19:01 2014 -0400
> +@@ -26821,6 +26821,9 @@
> + else
> + gcc_cv_libc_provides_ssp=no
> + case "$target" in
> ++ *-*-musl*)
> ++ # All versions of musl provide stack protector
> ++ gcc_cv_libc_provides_ssp=yes;;
> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
> + # glibc 2.4 and later provides __stack_chk_fail and
> + # either __stack_chk_guard, or TLS access to stack guard canary.
> +@@ -26854,6 +26857,7 @@
> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
> + # simply assert that glibc does provide this, which is true for all
> + # realistically usable GNU/Hurd configurations.
> ++ # All supported versions of musl provide it as well
> + gcc_cv_libc_provides_ssp=yes;;
> + *-*-darwin* | *-*-freebsd*)
> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
> +@@ -26936,6 +26940,9 @@
> + gcc_cv_target_dl_iterate_phdr=no
> + fi
> + ;;
> ++ *-linux-musl*)
> ++ gcc_cv_target_dl_iterate_phdr=yes
> ++ ;;
> + esac
> +
> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
> +diff -r 68e6894cdeea gcc/configure.ac
> +--- a/gcc/configure.ac Tue May 27 17:18:58 2014 -0400
> ++++ b/gcc/configure.ac Tue May 27 17:19:01 2014 -0400
> +@@ -4750,6 +4750,9 @@
> + gcc_cv_libc_provides_ssp,
> + [gcc_cv_libc_provides_ssp=no
> + case "$target" in
> ++ *-*-musl*)
> ++ # All versions of musl provide stack protector
> ++ gcc_cv_libc_provides_ssp=yes;;
> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
> + [# glibc 2.4 and later provides __stack_chk_fail and
> + # either __stack_chk_guard, or TLS access to stack guard canary.
> +@@ -4783,6 +4786,7 @@
> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
> + # simply assert that glibc does provide this, which is true for all
> + # realistically usable GNU/Hurd configurations.
> ++ # All supported versions of musl provide it as well
> + gcc_cv_libc_provides_ssp=yes;;
> + *-*-darwin* | *-*-freebsd*)
> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
> +@@ -4848,6 +4852,9 @@
> + gcc_cv_target_dl_iterate_phdr=no
> + fi
> + ;;
> ++ *-linux-musl*)
> ++ gcc_cv_target_dl_iterate_phdr=yes
> ++ ;;
> + esac
> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
> +# HG changeset patch
> +# Parent 5e0be25b469181f67d89382c7da201510c229f90
> +Get rid of ever-broken fixincludes on musl.
> +
> +diff -r 5e0be25b4691 fixincludes/mkfixinc.sh
> +--- a/fixincludes/mkfixinc.sh Tue May 27 17:19:01 2014 -0400
> ++++ b/fixincludes/mkfixinc.sh Tue May 27 17:19:04 2014 -0400
> +@@ -19,7 +19,8 @@
> + powerpc-*-eabi* | \
> + powerpc-*-rtems* | \
> + powerpcle-*-eabisim* | \
> +- powerpcle-*-eabi* )
> ++ powerpcle-*-eabi* | \
> ++ *-musl* )
> + # IF there is no include fixing,
> + # THEN create a no-op fixer and exit
> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
> +# HG changeset patch
> +# Parent dd2004fbd61c182919b800cec63806060b4228e5
> +Support for i386-linux-musl and x86_64-linux-musl.
> +
> +diff -r dd2004fbd61c gcc/config/i386/linux.h
> +--- a/gcc/config/i386/linux.h Tue May 27 17:19:04 2014 -0400
> ++++ b/gcc/config/i386/linux.h Tue May 27 17:19:07 2014 -0400
> +@@ -21,3 +21,4 @@
> +
> + #define GNU_USER_LINK_EMULATION "elf_i386"
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
> +diff -r dd2004fbd61c gcc/config/i386/linux64.h
> +--- a/gcc/config/i386/linux64.h Tue May 27 17:19:04 2014 -0400
> ++++ b/gcc/config/i386/linux64.h Tue May 27 17:19:07 2014 -0400
> +@@ -30,3 +30,7 @@
> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
> ++
> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
> +diff -r dd2004fbd61c libitm/config/linux/x86/tls.h
> +--- a/libitm/config/linux/x86/tls.h Tue May 27 17:19:04 2014 -0400
> ++++ b/libitm/config/linux/x86/tls.h Tue May 27 17:19:07 2014 -0400
> +@@ -25,16 +25,19 @@
> + #ifndef LIBITM_X86_TLS_H
> + #define LIBITM_X86_TLS_H 1
> +
> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
> ++#if defined(__GLIBC_PREREQ)
> ++#if __GLIBC_PREREQ(2, 10)
> + /* Use slots in the TCB head rather than __thread lookups.
> + GLIBC has reserved words 10 through 13 for TM. */
> + #define HAVE_ARCH_GTM_THREAD 1
> + #define HAVE_ARCH_GTM_THREAD_DISP 1
> + #endif
> ++#endif
> +
> + #include "config/generic/tls.h"
> +
> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
> ++#if defined(__GLIBC_PREREQ)
> ++#if __GLIBC_PREREQ(2, 10)
> + namespace GTM HIDDEN {
> +
> + #ifdef __x86_64__
> +@@ -101,5 +104,6 @@
> +
> + } // namespace GTM
> + #endif /* >= GLIBC 2.10 */
> ++#endif
> +
> + #endif // LIBITM_X86_TLS_H
> +# HG changeset patch
> +# Parent 42eeea84a212601568b5a6d17eb28cfba4b45e1d
> +Support for arm-linux-musl.
> +
> +diff -r 42eeea84a212 gcc/config/arm/linux-eabi.h
> +--- a/gcc/config/arm/linux-eabi.h Tue May 27 17:19:07 2014 -0400
> ++++ b/gcc/config/arm/linux-eabi.h Tue May 27 17:19:11 2014 -0400
> +@@ -77,6 +77,23 @@
> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
> +
> ++/* For ARM musl currently supports four dynamic linkers:
> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
> ++ musl does not support the legacy OABI mode.
> ++ All the dynamic linkers live in /lib.
> ++ We default to soft-float, EL. */
> ++#undef MUSL_DYNAMIC_LINKER
> ++#if TARGET_BIG_ENDIAN_DEFAULT
> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
> ++#endif
> ++#define MUSL_DYNAMIC_LINKER \
> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
> ++
> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
> + use the GNU/Linux version, not the generic BPABI version. */
> + #undef LINK_SPEC
> +diff -r 42eeea84a212 libitm/config/arm/hwcap.cc
> +--- a/libitm/config/arm/hwcap.cc Tue May 27 17:19:07 2014 -0400
> ++++ b/libitm/config/arm/hwcap.cc Tue May 27 17:19:11 2014 -0400
> +@@ -40,7 +40,11 @@
> +
> + #ifdef __linux__
> + #include <unistd.h>
> ++#ifdef __GLIBC__
> + #include <sys/fcntl.h>
> ++#else
> ++#include <fcntl.h>
> ++#endif
> + #include <elf.h>
> +
> + static void __attribute__((constructor))
> +# HG changeset patch
> +# Parent fae0f2a79418e010ac48deb6dc84b16524158f4d
> +Support for mips-linux-musl.
> +
> +diff -r fae0f2a79418 gcc/config/mips/linux.h
> +--- a/gcc/config/mips/linux.h Tue May 27 17:19:10 2014 -0400
> ++++ b/gcc/config/mips/linux.h Tue May 27 17:19:14 2014 -0400
> +@@ -18,3 +18,10 @@
> + <http://www.gnu.org/licenses/>. */
> +
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> ++
> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
> ++#endif
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
> +# HG changeset patch
> +# Parent 5f732d28ac6e18a515050808509c12a97a63af48
> +Support for powerpc-linux-musl.
> +
> +diff -r 5f732d28ac6e gcc/config.gcc
> +--- a/gcc/config.gcc Tue May 27 17:19:13 2014 -0400
> ++++ b/gcc/config.gcc Tue May 27 17:19:17 2014 -0400
> +@@ -2138,6 +2138,10 @@
> + powerpc*-*-linux*paired*)
> + tm_file="${tm_file} rs6000/750cl.h" ;;
> + esac
> ++ case ${target} in
> ++ *-linux*-musl*)
> ++ enable_secureplt=yes ;;
> ++ esac
> + if test x${enable_secureplt} = xyes; then
> + tm_file="rs6000/secureplt.h ${tm_file}"
> + fi
> +diff -r 5f732d28ac6e gcc/config/rs6000/linux64.h
> +--- a/gcc/config/rs6000/linux64.h Tue May 27 17:19:13 2014 -0400
> ++++ b/gcc/config/rs6000/linux64.h Tue May 27 17:19:17 2014 -0400
> +@@ -374,17 +374,21 @@
> + #endif
> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
> + #if DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
> + #elif DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif
> + #define GNU_USER_DYNAMIC_LINKER32 \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> + #define GNU_USER_DYNAMIC_LINKER64 \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> +
> + #undef DEFAULT_ASM_ENDIAN
> + #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
> +diff -r 5f732d28ac6e gcc/config/rs6000/secureplt.h
> +--- a/gcc/config/rs6000/secureplt.h Tue May 27 17:19:13 2014 -0400
> ++++ b/gcc/config/rs6000/secureplt.h Tue May 27 17:19:17 2014 -0400
> +@@ -18,3 +18,4 @@
> + <http://www.gnu.org/licenses/>. */
> +
> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
> +diff -r 5f732d28ac6e gcc/config/rs6000/sysv4.h
> +--- a/gcc/config/rs6000/sysv4.h Tue May 27 17:19:13 2014 -0400
> ++++ b/gcc/config/rs6000/sysv4.h Tue May 27 17:19:17 2014 -0400
> +@@ -537,6 +537,9 @@
> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
> + #endif
> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
> ++#endif
> +
> + /* Pass -G xxx to the compiler. */
> + #define CC1_SPEC "%{G*} %(cc1_cpu)" \
> +@@ -585,7 +588,8 @@
> +
> + /* Override the default target of the linker. */
> + #define LINK_TARGET_SPEC \
> +- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
> ++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
> ++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
> +
> + /* Any specific OS flags. */
> + #define LINK_OS_SPEC "\
> +@@ -763,15 +767,18 @@
> +
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
> + #if DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif
> + #define GNU_USER_DYNAMIC_LINKER \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> +
> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
> + %{rdynamic:-export-dynamic} \
> +@@ -894,6 +901,7 @@
> + { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
> + { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
> +diff -r 4d2277f95a50 gcc/config/aarch64/aarch64-linux.h
> +--- a/gcc/config/aarch64/aarch64-linux.h Tue May 27 17:19:17 2014 -0400
> ++++ b/gcc/config/aarch64/aarch64-linux.h Tue May 27 17:19:20 2014 -0400
> +@@ -21,7 +21,11 @@
> + #ifndef GCC_AARCH64_LINUX_H
> + #define GCC_AARCH64_LINUX_H
> +
> ++/* The AArch64 port currently supports two dynamic linkers:
> ++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
> ++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
> +
> + #define CPP_SPEC "%{pthread:-D_REENTRANT}"
> +
> +# HG changeset patch
> +# Parent 11f8f95e9940bff12445f189dae33a4a8074ed1a
> +Microblaze support (again).
> +
> +diff -r 11f8f95e9940 gcc/config/microblaze/linux.h
> +--- a/gcc/config/microblaze/linux.h Tue May 27 17:19:20 2014 -0400
> ++++ b/gcc/config/microblaze/linux.h Tue May 27 17:19:23 2014 -0400
> +@@ -25,7 +25,22 @@
> + #undef TLS_NEEDS_GOT
> + #define TLS_NEEDS_GOT 1
> +
> +-#define DYNAMIC_LINKER "/lib/ld.so.1"
> ++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
> ++#endif
> ++
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
> ++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> ++
> ++#if DEFAULT_LIBC == LIBC_MUSL
> ++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
> ++#else
> ++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
> ++#endif
> ++
> ++
> + #undef SUBTARGET_EXTRA_SPECS
> + #define SUBTARGET_EXTRA_SPECS \
> + { "dynamic_linker", DYNAMIC_LINKER }
> +From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
> +From: David Holsgrove <david.holsgrove@xilinx.com>
> +Date: Fri, 28 Sep 2012 16:32:03 +1000
> +Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
> + microblaze.h
> +
> +Fixes warnings like;
> +
> +warning: format '%zX' expects argument of type 'size_t',
> +but argument 3 has type 'unsigned int' [-Wformat]
> +
> +Changelog
> +
> +2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
> +
> + * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
> + and PTRDIFF_TYPE.
> +
> +Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
> +---
> + gcc/config/microblaze/microblaze.h | 6 ++++++
> + 1 file changed, 6 insertions(+)
> +
> +diff -r 2af2905d4b10 gcc/config/microblaze/microblaze.h
> +--- a/gcc/config/microblaze/microblaze.h Tue May 27 17:19:22 2014 -0400
> ++++ b/gcc/config/microblaze/microblaze.h Tue May 27 17:19:26 2014 -0400
> +@@ -219,6 +219,12 @@
> + #undef PTRDIFF_TYPE
> + #define PTRDIFF_TYPE "int"
> +
> ++#undef SIZE_TYPE
> ++#define SIZE_TYPE "unsigned int"
> ++
> ++#undef PTRDIFF_TYPE
> ++#define PTRDIFF_TYPE "int"
> ++
> + #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
> + ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
> + && (ALIGN) < BITS_PER_WORD \
> +diff -Nur gcc-4.8.3.orig/gcc/config/microblaze/microblaze.md gcc-4.8.3/gcc/config/microblaze/microblaze.md
> +--- gcc-4.8.3.orig/gcc/config/microblaze/microblaze.md 2014-02-23 19:59:26.000000000 +0100
> ++++ gcc-4.8.3/gcc/config/microblaze/microblaze.md 2014-05-31 20:39:29.978608468 +0200
> +@@ -1119,18 +1119,6 @@
> + }
> + )
> +
> +-;;Load and store reverse
> +-(define_insn "movsi4_rev"
> +- [(set (match_operand:SI 0 "reg_or_mem_operand" "=r,Q")
> +- (bswap:SI (match_operand:SF 1 "reg_or_mem_operand" "Q,r")))]
> +- "TARGET_REORDER"
> +- "@
> +- lwr\t%0,%y1,r0
> +- swr\t%1,%y0,r0"
> +- [(set_attr "type" "load,store")
> +- (set_attr "mode" "SI")
> +- (set_attr "length" "4,4")])
> +-
> + ;; 32-bit floating point moves
> +
> + (define_expand "movsf"
> +diff -r 596e2430c627 gcc/config/sh/linux.h
> +--- a/gcc/config/sh/linux.h Fri Sep 28 16:32:03 2012 +1000
> ++++ b/gcc/config/sh/linux.h Tue May 27 17:19:29 2014 -0400
> +@@ -43,7 +43,14 @@
> +
> + #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
> +
> ++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
> ++#define MUSL_DYNAMIC_LINKER_E "eb"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E
> ++#endif
> ++
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
> +
> + #undef SUBTARGET_LINK_EMUL_SUFFIX
> + #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
> diff --git a/patches/experimental/gcc/4.9.0/0001-musl.patch b/patches/experimental/gcc/4.9.0/0001-musl.patch
> new file mode 100644
> index 0000000..de6f532
> --- /dev/null
> +++ b/patches/experimental/gcc/4.9.0/0001-musl.patch
> @@ -0,0 +1,706 @@
> +This patch enables support for musl-libc in gcc.
> +
> +This patch is not supported by crosstool-ng and was originally found here:
> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.9.0-musl.diff
> +
> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
> +---
> +diff -r 2f9df662aaab libstdc++-v3/configure.host
> +--- a/libstdc++-v3/configure.host Tue May 20 11:00:21 2014 -0400
> ++++ b/libstdc++-v3/configure.host Tue May 20 11:05:42 2014 -0400
> +@@ -264,6 +264,13 @@
> + os_include_dir="os/bsd/freebsd"
> + ;;
> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
> ++ # check for musl by target
> ++ case "${host_os}" in
> ++ *-musl*)
> ++ os_include_dir="os/generic"
> ++ ;;
> ++ *)
> ++
> + if [ "$uclibc" = "yes" ]; then
> + os_include_dir="os/uclibc"
> + elif [ "$bionic" = "yes" ]; then
> +@@ -272,6 +279,9 @@
> + os_include_dir="os/gnu-linux"
> + fi
> + ;;
> ++
> ++ esac
> ++ ;;
> + hpux*)
> + os_include_dir="os/hpux"
> + ;;
> +# HG changeset patch
> +# Parent b6f4ce05a3155dbcbc06d72aebdb67e2f8abc094
> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
> +
> +diff -r b6f4ce05a315 gcc/config.gcc
> +--- a/gcc/config.gcc Tue May 20 11:05:42 2014 -0400
> ++++ b/gcc/config.gcc Tue May 20 11:05:45 2014 -0400
> +@@ -594,7 +594,7 @@
> + esac
> +
> + # Common C libraries.
> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
> +
> + # 32-bit x86 processors supported by --with-arch=. Each processor
> + # MUST be separated by exactly one space.
> +@@ -719,6 +719,9 @@
> + *-*-*uclibc*)
> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
> + ;;
> ++ *-*-*musl*)
> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
> ++ ;;
> + *)
> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
> + ;;
> +diff -r b6f4ce05a315 gcc/config/linux.h
> +--- a/gcc/config/linux.h Tue May 20 11:05:42 2014 -0400
> ++++ b/gcc/config/linux.h Tue May 20 11:05:45 2014 -0400
> +@@ -32,10 +32,12 @@
> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
> + #else
> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
> + #endif
> +
> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
> +@@ -53,18 +55,21 @@
> + uClibc or Bionic is the default C library and whether
> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
> +
> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
> +
> + #if DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
> + #elif DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
> + #elif DEFAULT_LIBC == LIBC_BIONIC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif /* DEFAULT_LIBC */
> +@@ -84,21 +89,92 @@
> +
> + #define GNU_USER_DYNAMIC_LINKER \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
> +- BIONIC_DYNAMIC_LINKER)
> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> + #define GNU_USER_DYNAMIC_LINKER32 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
> +- BIONIC_DYNAMIC_LINKER32)
> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> + #define GNU_USER_DYNAMIC_LINKER64 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
> +- BIONIC_DYNAMIC_LINKER64)
> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> + #define GNU_USER_DYNAMIC_LINKERX32 \
> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
> +- BIONIC_DYNAMIC_LINKERX32)
> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
> +
> + /* Whether we have Bionic libc runtime */
> + #undef TARGET_HAS_BIONIC
> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
> +
> ++/* musl avoids problematic includes by rearranging the include directories.
> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
> ++#if DEFAULT_LIBC == LIBC_MUSL
> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
> ++
> ++#ifdef LOCAL_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
> ++#endif
> ++
> ++#ifdef PREFIX_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
> ++#endif
> ++
> ++#ifdef CROSS_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
> ++#endif
> ++
> ++#ifdef TOOL_INCLUDE_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
> ++#endif
> ++
> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
> ++#else
> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
> ++#endif
> ++
> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
> ++#else
> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
> ++#endif
> ++
> ++#undef INCLUDE_DEFAULTS
> ++#define INCLUDE_DEFAULTS \
> ++ { \
> ++ INCLUDE_DEFAULTS_MUSL_GPP \
> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
> ++ { 0, 0, 0, 0, 0, 0 } \
> ++ }
> ++#endif
> ++
> + #if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
> + /* This is a *uclinux* target. We don't define below macros to normal linux
> + versions, because doing so would require *uclinux* targets to include
> +diff -r b6f4ce05a315 gcc/config/linux.opt
> +--- a/gcc/config/linux.opt Tue May 20 11:05:42 2014 -0400
> ++++ b/gcc/config/linux.opt Tue May 20 11:05:45 2014 -0400
> +@@ -30,3 +30,7 @@
> + muclibc
> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
> + Use uClibc C library
> ++
> ++mmusl
> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
> ++Use musl C library
> +diff -r b6f4ce05a315 gcc/ginclude/stddef.h
> +--- a/gcc/ginclude/stddef.h Tue May 20 11:05:42 2014 -0400
> ++++ b/gcc/ginclude/stddef.h Tue May 20 11:05:45 2014 -0400
> +@@ -181,6 +181,7 @@
> + #ifndef _GCC_SIZE_T
> + #ifndef _SIZET_
> + #ifndef __size_t
> ++#ifndef __DEFINED_size_t /* musl */
> + #define __size_t__ /* BeOS */
> + #define __SIZE_T__ /* Cray Unicos/Mk */
> + #define _SIZE_T
> +@@ -197,6 +198,7 @@
> + #define ___int_size_t_h
> + #define _GCC_SIZE_T
> + #define _SIZET_
> ++#define __DEFINED_size_t /* musl */
> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
> + || defined(__FreeBSD_kernel__)
> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
> +@@ -214,6 +216,7 @@
> + typedef long ssize_t;
> + #endif /* __BEOS__ */
> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
> ++#endif /* __DEFINED_size_t */
> + #endif /* __size_t */
> + #endif /* _SIZET_ */
> + #endif /* _GCC_SIZE_T */
> +# HG changeset patch
> +# Parent 65d595ef9fc3cdbbde4894d927593f1b0f5bbcb7
> +A fix for libgomp to correctly request a POSIX version for time support.
> +
> +diff -r 65d595ef9fc3 libgomp/config/posix/time.c
> +--- a/libgomp/config/posix/time.c Tue May 20 11:05:45 2014 -0400
> ++++ b/libgomp/config/posix/time.c Tue May 20 11:05:48 2014 -0400
> +@@ -28,6 +28,8 @@
> + The following implementation uses the most simple POSIX routines.
> + If present, POSIX 4 clocks should be used instead. */
> +
> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
> ++
> + #include "libgomp.h"
> + #include <unistd.h>
> + #if TIME_WITH_SYS_TIME
> +diff -r 95f4f1d7668b libgcc/unwind-dw2-fde-dip.c
> +--- a/libgcc/unwind-dw2-fde-dip.c Tue May 20 11:05:48 2014 -0400
> ++++ b/libgcc/unwind-dw2-fde-dip.c Tue May 20 11:05:52 2014 -0400
> +@@ -46,33 +46,13 @@
> + #include "unwind-compat.h"
> + #include "gthr.h"
> +
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
> + # define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__BIONIC__)
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
> +-# define ElfW __ElfN
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(__OpenBSD__)
> +-# define ElfW(type) Elf_##type
> +-# define USE_PT_GNU_EH_FRAME
> +-#endif
> +-
> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
> +- && defined(TARGET_DL_ITERATE_PHDR) \
> +- && defined(__sun__) && defined(__svr4__)
> +-# define USE_PT_GNU_EH_FRAME
> ++# ifdef __OpenBSD__
> ++# define ElfW(type) Elf_##type
> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
> ++# define ElfW __ElfN
> ++# endif
> + #endif
> +
> + #if defined(USE_PT_GNU_EH_FRAME)
> +diff -r ff03fa61c6b3 gcc/configure
> +--- a/gcc/configure Tue May 20 11:05:51 2014 -0400
> ++++ b/gcc/configure Tue May 20 11:05:55 2014 -0400
> +@@ -27300,6 +27300,9 @@
> + else
> + gcc_cv_libc_provides_ssp=no
> + case "$target" in
> ++ *-*-musl*)
> ++ # All versions of musl provide stack protector
> ++ gcc_cv_libc_provides_ssp=yes;;
> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
> + # glibc 2.4 and later provides __stack_chk_fail and
> + # either __stack_chk_guard, or TLS access to stack guard canary.
> +@@ -27332,6 +27335,7 @@
> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
> + # simply assert that glibc does provide this, which is true for all
> + # realistically usable GNU/Hurd configurations.
> ++ # All supported versions of musl provide it as well
> + gcc_cv_libc_provides_ssp=yes;;
> + *-*-darwin* | *-*-freebsd*)
> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
> +@@ -27421,6 +27425,9 @@
> + gcc_cv_target_dl_iterate_phdr=no
> + fi
> + ;;
> ++ *-linux-musl*)
> ++ gcc_cv_target_dl_iterate_phdr=yes
> ++ ;;
> + esac
> +
> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
> +diff -r ff03fa61c6b3 gcc/configure.ac
> +--- a/gcc/configure.ac Tue May 20 11:05:51 2014 -0400
> ++++ b/gcc/configure.ac Tue May 20 11:05:55 2014 -0400
> +@@ -5001,6 +5001,9 @@
> + gcc_cv_libc_provides_ssp,
> + [gcc_cv_libc_provides_ssp=no
> + case "$target" in
> ++ *-*-musl*)
> ++ # All versions of musl provide stack protector
> ++ gcc_cv_libc_provides_ssp=yes;;
> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
> + # glibc 2.4 and later provides __stack_chk_fail and
> + # either __stack_chk_guard, or TLS access to stack guard canary.
> +@@ -5027,6 +5030,7 @@
> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
> + # simply assert that glibc does provide this, which is true for all
> + # realistically usable GNU/Hurd configurations.
> ++ # All supported versions of musl provide it as well
> + gcc_cv_libc_provides_ssp=yes;;
> + *-*-darwin* | *-*-freebsd*)
> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
> +@@ -5093,6 +5097,9 @@
> + gcc_cv_target_dl_iterate_phdr=no
> + fi
> + ;;
> ++ *-linux-musl*)
> ++ gcc_cv_target_dl_iterate_phdr=yes
> ++ ;;
> + esac
> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
> +# HG changeset patch
> +# Parent 26f591b9e77e3df3d0f772b840bd9c13ec24bd4c
> +Get rid of ever-broken fixincludes on musl.
> +
> +diff -r 26f591b9e77e fixincludes/mkfixinc.sh
> +--- a/fixincludes/mkfixinc.sh Tue May 20 11:05:55 2014 -0400
> ++++ b/fixincludes/mkfixinc.sh Tue May 20 11:05:58 2014 -0400
> +@@ -19,7 +19,8 @@
> + powerpc-*-eabi* | \
> + powerpc-*-rtems* | \
> + powerpcle-*-eabisim* | \
> +- powerpcle-*-eabi* )
> ++ powerpcle-*-eabi* | \
> ++ *-musl* )
> + # IF there is no include fixing,
> + # THEN create a no-op fixer and exit
> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
> +# HG changeset patch
> +# Parent bc117c35705fcc39396c19af046101411f251161
> +Support for i386-linux-musl and x86_64-linux-musl.
> +
> +diff -r bc117c35705f gcc/config/i386/linux.h
> +--- a/gcc/config/i386/linux.h Tue May 20 11:05:58 2014 -0400
> ++++ b/gcc/config/i386/linux.h Tue May 20 11:06:01 2014 -0400
> +@@ -21,3 +21,4 @@
> +
> + #define GNU_USER_LINK_EMULATION "elf_i386"
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
> +diff -r bc117c35705f gcc/config/i386/linux64.h
> +--- a/gcc/config/i386/linux64.h Tue May 20 11:05:58 2014 -0400
> ++++ b/gcc/config/i386/linux64.h Tue May 20 11:06:01 2014 -0400
> +@@ -30,3 +30,7 @@
> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
> ++
> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
> +diff -r bc117c35705f libitm/config/linux/x86/tls.h
> +--- a/libitm/config/linux/x86/tls.h Tue May 20 11:05:58 2014 -0400
> ++++ b/libitm/config/linux/x86/tls.h Tue May 20 11:06:01 2014 -0400
> +@@ -25,16 +25,19 @@
> + #ifndef LIBITM_X86_TLS_H
> + #define LIBITM_X86_TLS_H 1
> +
> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
> ++#if defined(__GLIBC_PREREQ)
> ++#if __GLIBC_PREREQ(2, 10)
> + /* Use slots in the TCB head rather than __thread lookups.
> + GLIBC has reserved words 10 through 13 for TM. */
> + #define HAVE_ARCH_GTM_THREAD 1
> + #define HAVE_ARCH_GTM_THREAD_DISP 1
> + #endif
> ++#endif
> +
> + #include "config/generic/tls.h"
> +
> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
> ++#if defined(__GLIBC_PREREQ)
> ++#if __GLIBC_PREREQ(2, 10)
> + namespace GTM HIDDEN {
> +
> + #ifdef __x86_64__
> +@@ -101,5 +104,6 @@
> +
> + } // namespace GTM
> + #endif /* >= GLIBC 2.10 */
> ++#endif
> +
> + #endif // LIBITM_X86_TLS_H
> +# HG changeset patch
> +# Parent 933c4f064622eb96a0b2ab213abd0cddbd977d1a
> +Support for arm-linux-musl.
> +
> +diff -r 933c4f064622 gcc/config/arm/linux-eabi.h
> +--- a/gcc/config/arm/linux-eabi.h Tue May 20 11:06:01 2014 -0400
> ++++ b/gcc/config/arm/linux-eabi.h Tue May 20 11:06:04 2014 -0400
> +@@ -77,6 +77,23 @@
> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
> +
> ++/* For ARM musl currently supports four dynamic linkers:
> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
> ++ musl does not support the legacy OABI mode.
> ++ All the dynamic linkers live in /lib.
> ++ We default to soft-float, EL. */
> ++#undef MUSL_DYNAMIC_LINKER
> ++#if TARGET_BIG_ENDIAN_DEFAULT
> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
> ++#endif
> ++#define MUSL_DYNAMIC_LINKER \
> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
> ++
> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
> + use the GNU/Linux version, not the generic BPABI version. */
> + #undef LINK_SPEC
> +diff -r 933c4f064622 libitm/config/arm/hwcap.cc
> +--- a/libitm/config/arm/hwcap.cc Tue May 20 11:06:01 2014 -0400
> ++++ b/libitm/config/arm/hwcap.cc Tue May 20 11:06:04 2014 -0400
> +@@ -40,7 +40,11 @@
> +
> + #ifdef __linux__
> + #include <unistd.h>
> ++#ifdef __GLIBC__
> + #include <sys/fcntl.h>
> ++#else
> ++#include <fcntl.h>
> ++#endif
> + #include <elf.h>
> +
> + static void __attribute__((constructor))
> +# HG changeset patch
> +# Parent 03fe896f3acaa911e935a8e999d15c7542ee73d1
> +Support for mips-linux-musl.
> +
> +diff -r 03fe896f3aca gcc/config/mips/linux.h
> +--- a/gcc/config/mips/linux.h Tue May 20 11:06:04 2014 -0400
> ++++ b/gcc/config/mips/linux.h Tue May 20 11:06:08 2014 -0400
> +@@ -23,3 +23,10 @@
> + #undef UCLIBC_DYNAMIC_LINKER
> + #define UCLIBC_DYNAMIC_LINKER \
> + "%{mnan=2008:/lib/ld-uClibc-mipsn8.so.0;:/lib/ld-uClibc.so.0}"
> ++
> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
> ++#endif
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
> +# HG changeset patch
> +# Parent 6097333f2ab47a4ce37ccfb18b0f07a0cdcfec49
> +Support for powerpc-linux-musl.
> +
> +diff -r 6097333f2ab4 gcc/config.gcc
> +--- a/gcc/config.gcc Tue May 20 11:06:08 2014 -0400
> ++++ b/gcc/config.gcc Tue May 20 11:06:11 2014 -0400
> +@@ -2326,6 +2326,10 @@
> + powerpc*-*-linux*paired*)
> + tm_file="${tm_file} rs6000/750cl.h" ;;
> + esac
> ++ case ${target} in
> ++ *-linux*-musl*)
> ++ enable_secureplt=yes ;;
> ++ esac
> + if test x${enable_secureplt} = xyes; then
> + tm_file="rs6000/secureplt.h ${tm_file}"
> + fi
> +diff -r 6097333f2ab4 gcc/config/rs6000/linux64.h
> +--- a/gcc/config/rs6000/linux64.h Tue May 20 11:06:08 2014 -0400
> ++++ b/gcc/config/rs6000/linux64.h Tue May 20 11:06:11 2014 -0400
> +@@ -375,17 +375,21 @@
> + #endif
> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
> + #if DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
> + #elif DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif
> + #define GNU_USER_DYNAMIC_LINKER32 \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
> + #define GNU_USER_DYNAMIC_LINKER64 \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
> +
> + #undef DEFAULT_ASM_ENDIAN
> + #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
> +diff -r 6097333f2ab4 gcc/config/rs6000/secureplt.h
> +--- a/gcc/config/rs6000/secureplt.h Tue May 20 11:06:08 2014 -0400
> ++++ b/gcc/config/rs6000/secureplt.h Tue May 20 11:06:11 2014 -0400
> +@@ -18,3 +18,4 @@
> + <http://www.gnu.org/licenses/>. */
> +
> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
> +diff -r 6097333f2ab4 gcc/config/rs6000/sysv4.h
> +--- a/gcc/config/rs6000/sysv4.h Tue May 20 11:06:08 2014 -0400
> ++++ b/gcc/config/rs6000/sysv4.h Tue May 20 11:06:11 2014 -0400
> +@@ -537,6 +537,9 @@
> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
> + #endif
> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
> ++#endif
> +
> + /* Pass -G xxx to the compiler. */
> + #define CC1_SPEC "%{G*} %(cc1_cpu)" \
> +@@ -585,7 +588,8 @@
> +
> + /* Override the default target of the linker. */
> + #define LINK_TARGET_SPEC \
> +- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
> ++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
> ++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
> +
> + /* Any specific OS flags. */
> + #define LINK_OS_SPEC "\
> +@@ -763,15 +767,18 @@
> +
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
> + #if DEFAULT_LIBC == LIBC_UCLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
> ++#elif DEFAULT_LIBC == LIBC_MUSL
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
> + #else
> + #error "Unsupported DEFAULT_LIBC"
> + #endif
> + #define GNU_USER_DYNAMIC_LINKER \
> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
> +
> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
> + %{rdynamic:-export-dynamic} \
> +@@ -894,6 +901,7 @@
> + { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
> + { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
> +diff -r 813971b9f083 gcc/config/aarch64/aarch64-linux.h
> +--- a/gcc/config/aarch64/aarch64-linux.h Tue May 20 11:06:11 2014 -0400
> ++++ b/gcc/config/aarch64/aarch64-linux.h Tue May 20 11:06:14 2014 -0400
> +@@ -23,6 +23,8 @@
> +
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64%{mbig-endian:_be}.so.1"
> +
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
> ++
> + #define CPP_SPEC "%{pthread:-D_REENTRANT}"
> +
> + #define LINUX_TARGET_LINK_SPEC "%{h*} \
> +# HG changeset patch
> +# Parent 4a62a6813db995fe195d47ff73234d455975ac30
> +Microblaze support (again).
> +
> +diff -r 4a62a6813db9 gcc/config/microblaze/linux.h
> +--- a/gcc/config/microblaze/linux.h Tue May 20 11:06:14 2014 -0400
> ++++ b/gcc/config/microblaze/linux.h Tue May 20 11:06:17 2014 -0400
> +@@ -25,7 +25,22 @@
> + #undef TLS_NEEDS_GOT
> + #define TLS_NEEDS_GOT 1
> +
> +-#define DYNAMIC_LINKER "/lib/ld.so.1"
> ++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
> ++#endif
> ++
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
> ++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
> ++
> ++#if DEFAULT_LIBC == LIBC_MUSL
> ++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
> ++#else
> ++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
> ++#endif
> ++
> ++
> + #undef SUBTARGET_EXTRA_SPECS
> + #define SUBTARGET_EXTRA_SPECS \
> + { "dynamic_linker", DYNAMIC_LINKER }
> +From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
> +From: David Holsgrove <david.holsgrove@xilinx.com>
> +Date: Fri, 28 Sep 2012 16:32:03 +1000
> +Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
> + microblaze.h
> +
> +Fixes warnings like;
> +
> +warning: format '%zX' expects argument of type 'size_t',
> +but argument 3 has type 'unsigned int' [-Wformat]
> +
> +Changelog
> +
> +2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
> +
> + * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
> + and PTRDIFF_TYPE.
> +
> +Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
> +---
> + gcc/config/microblaze/microblaze.h | 6 ++++++
> + 1 file changed, 6 insertions(+)
> +
> +diff -r 20d1c995f5de gcc/config/microblaze/microblaze.h
> +--- a/gcc/config/microblaze/microblaze.h Tue May 20 11:06:17 2014 -0400
> ++++ b/gcc/config/microblaze/microblaze.h Tue May 20 11:06:20 2014 -0400
> +@@ -218,6 +218,12 @@
> + #undef PTRDIFF_TYPE
> + #define PTRDIFF_TYPE "int"
> +
> ++#undef SIZE_TYPE
> ++#define SIZE_TYPE "unsigned int"
> ++
> ++#undef PTRDIFF_TYPE
> ++#define PTRDIFF_TYPE "int"
> ++
> + #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
> + ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
> + && (ALIGN) < BITS_PER_WORD \
> +diff -r 2f999fc929da gcc/config/sh/linux.h
> +--- a/gcc/config/sh/linux.h Fri Sep 28 16:32:03 2012 +1000
> ++++ b/gcc/config/sh/linux.h Tue May 20 11:06:23 2014 -0400
> +@@ -43,7 +43,14 @@
> +
> + #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
> +
> ++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
> ++#define MUSL_DYNAMIC_LINKER_E "eb"
> ++#else
> ++#define MUSL_DYNAMIC_LINKER_E
> ++#endif
> ++
> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
> +
> + #undef SUBTARGET_LINK_EMUL_SUFFIX
> + #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
> diff --git a/patches/musl/1.0.3/0001-fix_linker_regression.patch b/patches/musl/1.0.3/0001-fix_linker_regression.patch
> new file mode 100644
> index 0000000..801cb00
> --- /dev/null
> +++ b/patches/musl/1.0.3/0001-fix_linker_regression.patch
> @@ -0,0 +1,64 @@
> +From 9a4ad02214a859e93d2c980e4535378a6a74e3a6 Mon Sep 17 00:00:00 2001
> +From: Rich Felker <dalias@aerifal.cx>
> +Date: Mon, 30 Jun 2014 01:52:54 +0000
> +Subject: fix regression in dynamic linker error reporting
> +
> +due to a mistake when refactoring the error printing for the dynamic
> +linker (commit 7c73cacd09a51a87484db5689864743e4984a84d), all messages
> +were suppressed and replaced by blank lines.
> +---
> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
> +index bc4f2f6..a08300d 100644
> +--- a/src/ldso/dynlink.c
> ++++ b/src/ldso/dynlink.c
> +@@ -290,8 +290,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
> + if (!astype) continue;
> + type = remap_rel(astype);
> + if (!type) {
> +- error(errbuf, sizeof errbuf,
> +- "Error relocating %s: unsupported relocation type %d",
> ++ error("Error relocating %s: unsupported relocation type %d",
> + dso->name, astype);
> + continue;
> + }
> +@@ -304,8 +303,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
> + def = find_sym(ctx, name, type==REL_PLT);
> + if (!def.sym && (sym->st_shndx != SHN_UNDEF
> + || sym->st_info>>4 != STB_WEAK)) {
> +- error(errbuf, sizeof errbuf,
> +- "Error relocating %s: %s: symbol not found",
> ++ error("Error relocating %s: %s: symbol not found",
> + dso->name, name);
> + continue;
> + }
> +@@ -366,7 +364,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
> + if (stride<3) addend = reloc_addr[1];
> + if (runtime && def.dso->tls_id >= static_tls_cnt) {
> + struct td_index *new = malloc(sizeof *new);
> +- if (!new) error(errbuf, sizeof errbuf,
> ++ if (!new) error(
> + "Error relocating %s: cannot allocate TLSDESC for %s",
> + dso->name, sym ? name : "(local)" );
> + new->next = dso->td_index;
> +@@ -839,8 +837,7 @@ static void load_deps(struct dso *p)
> + if (p->dynv[i] != DT_NEEDED) continue;
> + dep = load_library(p->strings + p->dynv[i+1], p);
> + if (!dep) {
> +- error(errbuf, sizeof errbuf,
> +- "Error loading shared library %s: %m (needed by %s)",
> ++ error("Error loading shared library %s: %m (needed by %s)",
> + p->strings + p->dynv[i+1], p->name);
> + continue;
> + }
> +@@ -890,8 +887,7 @@ static void reloc_all(struct dso *p)
> +
> + if (p->relro_start != p->relro_end &&
> + mprotect(p->base+p->relro_start, p->relro_end-p->relro_start, PROT_READ) < 0) {
> +- error(errbuf, sizeof errbuf,
> +- "Error relocating %s: RELRO protection failed: %m",
> ++ error("Error relocating %s: RELRO protection failed: %m",
> + p->name);
> + }
> +
> +--
> +cgit v0.9.0.3-65-g4555
> diff --git a/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch b/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
> new file mode 100644
> index 0000000..4891b4f
> --- /dev/null
> +++ b/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
> @@ -0,0 +1,88 @@
> +From 2d8cc92a7cb4a3256ed07d86843388ffd8a882b1 Mon Sep 17 00:00:00 2001
> +From: Rich Felker <dalias@aerifal.cx>
> +Date: Mon, 30 Jun 2014 05:18:14 +0000
> +Subject: fix regression in mips dynamic linker
> +
> +this issue caused the address of functions in shared libraries to
> +resolve to their PLT thunks in the main program rather than their
> +correct addresses. it was observed causing crashes, though the
> +mechanism of the crash was not thoroughly investigated. since the
> +issue is very subtle, it calls for some explanation:
> +
> +on all well-behaved archs, GOT entries that belong to the PLT use a
> +special relocation type, typically called JMP_SLOT, so that the
> +dynamic linker can avoid having the jump destinations for the PLT
> +resolve to PLT thunks themselves (they also provide a definition for
> +the symbol, which must be used whenever the address of the function is
> +taken so that all DSOs see the same address).
> +
> +however, the traditional mips PIC ABI lacked such a JMP_SLOT
> +relocation type, presumably because, due to the way PIC works, the
> +address of the PLT thunk was never needed and could always be ignored.
> +
> +prior to commit adf94c19666e687a728bbf398f9a88ea4ea19996, the mips
> +version of reloc.h contained a hack that caused all symbol lookups to
> +be treated like JMP_SLOT, inhibiting undefined symbols from ever being
> +used to resolve symbolic relocations. this hack goes all the way back
> +to commit babf820180368f00742ec65b2050a82380d7c542, when the mips
> +dynamic linker was first made usable.
> +
> +during the recent refactoring to eliminate arch-specific relocation
> +processing (commit adf94c19666e687a728bbf398f9a88ea4ea19996), this
> +hack was overlooked and no equivalent functionality was provided in
> +the new code.
> +
> +fixing the problem is not as simple as adding back an equivalent hack,
> +since there is now also a "non-PIC ABI" that can be used for the main
> +executable, which actually does use a PLT. the closest thing to
> +official documentation I could find for this ABI is nonpic.txt,
> +attached to Message-ID: 20080701202236.GA1534@caradoc.them.org, which
> +can be found in the gcc mailing list archives and elsewhere. per this
> +document, undefined symbols corresponding to PLT thunks have the
> +STO_MIPS_PLT bit set in the symbol's st_other field. thus, I have
> +added an arch-specific rule for mips, applied at the find_sym level
> +rather than the relocation level, to reject undefined symbols with the
> +STO_MIPS_PLT bit clear.
> +
> +the previous hack of treating all mips relocations as JMP_SLOT-like,
> +rather than rejecting the unwanted symbols in find_sym, probably also
> +caused dlsym to wrongly return PLT thunks in place of the correct
> +address of a function under at least some conditions. this should now
> +be fixed, at least for global-scope symbol lookups.
> +---
> +diff --git a/arch/mips/reloc.h b/arch/mips/reloc.h
> +index 91fa097..4b81d32 100644
> +--- a/arch/mips/reloc.h
> ++++ b/arch/mips/reloc.h
> +@@ -86,3 +86,4 @@ static void do_arch_relocs(struct dso *this, struct dso *head)
> +
> + #define NEED_ARCH_RELOCS 1
> + #define DYNAMIC_IS_RO 1
> ++#define ARCH_SYM_REJECT_UND(s) (!((s)->st_other & STO_MIPS_PLT))
> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
> +index a08300d..55124ff 100644
> +--- a/src/ldso/dynlink.c
> ++++ b/src/ldso/dynlink.c
> +@@ -233,6 +233,10 @@ static Sym *gnu_lookup(const char *s, uint32_t h1, struct dso *dso)
> + #define OK_TYPES (1<<STT_NOTYPE | 1<<STT_OBJECT | 1<<STT_FUNC | 1<<STT_COMMON | 1<<STT_TLS)
> + #define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK | 1<<STB_GNU_UNIQUE)
> +
> ++#ifndef ARCH_SYM_REJECT_UND
> ++#define ARCH_SYM_REJECT_UND(s) 0
> ++#endif
> ++
> + static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
> + {
> + uint32_t h = 0, gh = 0;
> +@@ -249,7 +253,8 @@ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
> + }
> + if (!sym) continue;
> + if (!sym->st_shndx)
> +- if (need_def || (sym->st_info&0xf) == STT_TLS)
> ++ if (need_def || (sym->st_info&0xf) == STT_TLS
> ++ || ARCH_SYM_REJECT_UND(sym))
> + continue;
> + if (!sym->st_value)
> + if ((sym->st_info&0xf) != STT_TLS)
> +--
> +cgit v0.9.0.3-65-g4555
> diff --git a/patches/musl/1.1.3/0001-fix_linker_regression.patch b/patches/musl/1.1.3/0001-fix_linker_regression.patch
> new file mode 100644
> index 0000000..801cb00
> --- /dev/null
> +++ b/patches/musl/1.1.3/0001-fix_linker_regression.patch
> @@ -0,0 +1,64 @@
> +From 9a4ad02214a859e93d2c980e4535378a6a74e3a6 Mon Sep 17 00:00:00 2001
> +From: Rich Felker <dalias@aerifal.cx>
> +Date: Mon, 30 Jun 2014 01:52:54 +0000
> +Subject: fix regression in dynamic linker error reporting
> +
> +due to a mistake when refactoring the error printing for the dynamic
> +linker (commit 7c73cacd09a51a87484db5689864743e4984a84d), all messages
> +were suppressed and replaced by blank lines.
> +---
> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
> +index bc4f2f6..a08300d 100644
> +--- a/src/ldso/dynlink.c
> ++++ b/src/ldso/dynlink.c
> +@@ -290,8 +290,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
> + if (!astype) continue;
> + type = remap_rel(astype);
> + if (!type) {
> +- error(errbuf, sizeof errbuf,
> +- "Error relocating %s: unsupported relocation type %d",
> ++ error("Error relocating %s: unsupported relocation type %d",
> + dso->name, astype);
> + continue;
> + }
> +@@ -304,8 +303,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
> + def = find_sym(ctx, name, type==REL_PLT);
> + if (!def.sym && (sym->st_shndx != SHN_UNDEF
> + || sym->st_info>>4 != STB_WEAK)) {
> +- error(errbuf, sizeof errbuf,
> +- "Error relocating %s: %s: symbol not found",
> ++ error("Error relocating %s: %s: symbol not found",
> + dso->name, name);
> + continue;
> + }
> +@@ -366,7 +364,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
> + if (stride<3) addend = reloc_addr[1];
> + if (runtime && def.dso->tls_id >= static_tls_cnt) {
> + struct td_index *new = malloc(sizeof *new);
> +- if (!new) error(errbuf, sizeof errbuf,
> ++ if (!new) error(
> + "Error relocating %s: cannot allocate TLSDESC for %s",
> + dso->name, sym ? name : "(local)" );
> + new->next = dso->td_index;
> +@@ -839,8 +837,7 @@ static void load_deps(struct dso *p)
> + if (p->dynv[i] != DT_NEEDED) continue;
> + dep = load_library(p->strings + p->dynv[i+1], p);
> + if (!dep) {
> +- error(errbuf, sizeof errbuf,
> +- "Error loading shared library %s: %m (needed by %s)",
> ++ error("Error loading shared library %s: %m (needed by %s)",
> + p->strings + p->dynv[i+1], p->name);
> + continue;
> + }
> +@@ -890,8 +887,7 @@ static void reloc_all(struct dso *p)
> +
> + if (p->relro_start != p->relro_end &&
> + mprotect(p->base+p->relro_start, p->relro_end-p->relro_start, PROT_READ) < 0) {
> +- error(errbuf, sizeof errbuf,
> +- "Error relocating %s: RELRO protection failed: %m",
> ++ error("Error relocating %s: RELRO protection failed: %m",
> + p->name);
> + }
> +
> +--
> +cgit v0.9.0.3-65-g4555
> diff --git a/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch b/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
> new file mode 100644
> index 0000000..4891b4f
> --- /dev/null
> +++ b/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
> @@ -0,0 +1,88 @@
> +From 2d8cc92a7cb4a3256ed07d86843388ffd8a882b1 Mon Sep 17 00:00:00 2001
> +From: Rich Felker <dalias@aerifal.cx>
> +Date: Mon, 30 Jun 2014 05:18:14 +0000
> +Subject: fix regression in mips dynamic linker
> +
> +this issue caused the address of functions in shared libraries to
> +resolve to their PLT thunks in the main program rather than their
> +correct addresses. it was observed causing crashes, though the
> +mechanism of the crash was not thoroughly investigated. since the
> +issue is very subtle, it calls for some explanation:
> +
> +on all well-behaved archs, GOT entries that belong to the PLT use a
> +special relocation type, typically called JMP_SLOT, so that the
> +dynamic linker can avoid having the jump destinations for the PLT
> +resolve to PLT thunks themselves (they also provide a definition for
> +the symbol, which must be used whenever the address of the function is
> +taken so that all DSOs see the same address).
> +
> +however, the traditional mips PIC ABI lacked such a JMP_SLOT
> +relocation type, presumably because, due to the way PIC works, the
> +address of the PLT thunk was never needed and could always be ignored.
> +
> +prior to commit adf94c19666e687a728bbf398f9a88ea4ea19996, the mips
> +version of reloc.h contained a hack that caused all symbol lookups to
> +be treated like JMP_SLOT, inhibiting undefined symbols from ever being
> +used to resolve symbolic relocations. this hack goes all the way back
> +to commit babf820180368f00742ec65b2050a82380d7c542, when the mips
> +dynamic linker was first made usable.
> +
> +during the recent refactoring to eliminate arch-specific relocation
> +processing (commit adf94c19666e687a728bbf398f9a88ea4ea19996), this
> +hack was overlooked and no equivalent functionality was provided in
> +the new code.
> +
> +fixing the problem is not as simple as adding back an equivalent hack,
> +since there is now also a "non-PIC ABI" that can be used for the main
> +executable, which actually does use a PLT. the closest thing to
> +official documentation I could find for this ABI is nonpic.txt,
> +attached to Message-ID: 20080701202236.GA1534@caradoc.them.org, which
> +can be found in the gcc mailing list archives and elsewhere. per this
> +document, undefined symbols corresponding to PLT thunks have the
> +STO_MIPS_PLT bit set in the symbol's st_other field. thus, I have
> +added an arch-specific rule for mips, applied at the find_sym level
> +rather than the relocation level, to reject undefined symbols with the
> +STO_MIPS_PLT bit clear.
> +
> +the previous hack of treating all mips relocations as JMP_SLOT-like,
> +rather than rejecting the unwanted symbols in find_sym, probably also
> +caused dlsym to wrongly return PLT thunks in place of the correct
> +address of a function under at least some conditions. this should now
> +be fixed, at least for global-scope symbol lookups.
> +---
> +diff --git a/arch/mips/reloc.h b/arch/mips/reloc.h
> +index 91fa097..4b81d32 100644
> +--- a/arch/mips/reloc.h
> ++++ b/arch/mips/reloc.h
> +@@ -86,3 +86,4 @@ static void do_arch_relocs(struct dso *this, struct dso *head)
> +
> + #define NEED_ARCH_RELOCS 1
> + #define DYNAMIC_IS_RO 1
> ++#define ARCH_SYM_REJECT_UND(s) (!((s)->st_other & STO_MIPS_PLT))
> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
> +index a08300d..55124ff 100644
> +--- a/src/ldso/dynlink.c
> ++++ b/src/ldso/dynlink.c
> +@@ -233,6 +233,10 @@ static Sym *gnu_lookup(const char *s, uint32_t h1, struct dso *dso)
> + #define OK_TYPES (1<<STT_NOTYPE | 1<<STT_OBJECT | 1<<STT_FUNC | 1<<STT_COMMON | 1<<STT_TLS)
> + #define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK | 1<<STB_GNU_UNIQUE)
> +
> ++#ifndef ARCH_SYM_REJECT_UND
> ++#define ARCH_SYM_REJECT_UND(s) 0
> ++#endif
> ++
> + static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
> + {
> + uint32_t h = 0, gh = 0;
> +@@ -249,7 +253,8 @@ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
> + }
> + if (!sym) continue;
> + if (!sym->st_shndx)
> +- if (need_def || (sym->st_info&0xf) == STT_TLS)
> ++ if (need_def || (sym->st_info&0xf) == STT_TLS
> ++ || ARCH_SYM_REJECT_UND(sym))
> + continue;
> + if (!sym->st_value)
> + if ((sym->st_info&0xf) != STT_TLS)
> +--
> +cgit v0.9.0.3-65-g4555
> diff --git a/scripts/build/arch/arm.sh b/scripts/build/arch/arm.sh
> index 430bdde..5f6ce2f 100644
> --- a/scripts/build/arch/arm.sh
> +++ b/scripts/build/arch/arm.sh
> @@ -17,6 +17,7 @@ CT_DoArchTupleValues() {
> case "${CT_LIBC},${CT_ARCH_ARM_EABI}" in
> *glibc,y) CT_TARGET_SYS=gnueabi;;
> uClibc,y) CT_TARGET_SYS=uclibcgnueabi;;
> + musl,y) CT_TARGET_SYS=musleabi;;
> *,y) CT_TARGET_SYS=eabi;;
> esac
>
> diff --git a/scripts/build/libc/musl.sh b/scripts/build/libc/musl.sh
> new file mode 100644
> index 0000000..536267c
> --- /dev/null
> +++ b/scripts/build/libc/musl.sh
> @@ -0,0 +1,128 @@
> +# This file adds functions to build the musl C library
> +# Copyright 2013 Timo Teräs
> +# Licensed under the GPL v2. See COPYING in the root of this package
> +
> +do_libc_get() {
> + local libc_src
> +
> + libc_src="http://www.musl-libc.org/releases"
> +
> + if [ "${CT_LIBC_MUSL_CUSTOM}" = "y" ]; then
> + CT_GetCustom "musl" "${CT_LIBC_VERSION}" \
> + "${CT_LIBC_MUSL_CUSTOM_LOCATION}"
> + else # ! custom location
> + CT_GetFile "musl-${CT_LIBC_VERSION}" "${libc_src}"
> + fi # ! custom location
> +}
> +
> +do_libc_extract() {
> + # If using custom directory location, nothing to do.
> + if [ "${CT_LIBC_MUSL_CUSTOM}" = "y" ]; then
> + # Abort if the custom directory is not found.
> + if ! [ -d "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" ]; then
> + CT_Abort "Directory not found: ${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}"
> + fi
> +
> + return 0
> + fi
> +
> + CT_Extract "musl-${CT_LIBC_VERSION}"
> + CT_Patch "musl" "${CT_LIBC_VERSION}"
> +}
> +
> +do_libc_check_config() {
> + :
> +}
> +
> +do_libc_configure() {
> + CT_DoLog EXTRA "Configuring C library"
> + local -a extra_cflags
> +
> + # From buildroot:
> + # gcc constant folding bug with weak aliases workaround
> + # See http://www.openwall.com/lists/musl/2014/05/15/1
> + if [ "${CT_CC_GCC_4_9_or_later}" = "y" ]; then
> + extra_cflags+=("-fno-toplevel-reorder")
> + fi
> +
> + # NOTE: musl handles the build/host/target a little bit differently
> + # then one would expect:
> + # build : not used
> + # host : the machine building musl
> + # target : the machine musl runs on
> + CT_DoExecLog CFG \
> + CFLAGS="${extra_cflags[@]}" \
> + CROSS_COMPILE="${CT_TARGET}-" \
> + ./configure \
> + --host="${CT_TARGET}" \
> + --target="${CT_TARGET}" \
> + --prefix="/usr" \
> + --disable-gcc-wrapper
> +}
> +
> +do_get_arch() {
> + local ARCH=""
> +
> + # musl can be installed without gcc if arch is known
> + case "${CT_TARGET}" in
> + arm*) ARCH=arm ;;
> + i?86*) ARCH=i386 ;;
> + x86_64*) ARCH=x86_64 ;;
> + mips-*|mipsel-*) ARCH=mips ;;
> + microblaze-*) ARCH=microblaze ;;
> + powerpc-*) ARCH=powerpc ;;
> + sh-*|sh[34]-*) ARCH=sh ;;
> + x32-*) ARCH=x32 ;;
> + *) ARCH="" ;;
> + esac
> +
> + echo "${ARCH}"
> +}
> +
> +do_libc_start_files() {
> + #local ARCH="$(do_get_arch)"
> + CT_DoStep INFO "Installing C library headers"
> +
> + # Simply copy files until musl has the ability to build out-of-tree
> + CT_DoLog EXTRA "Copying sources to build directory"
> + CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" \
> + "${CT_BUILD_DIR}/build-libc-headers"
> + cd "${CT_BUILD_DIR}/build-libc-headers"
> +
> + do_libc_configure
> +
> + CT_DoLog EXTRA "Installing headers"
> + #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" install-headers
> + CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install-headers
> +
> + #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" \
> + CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" \
> + crt/crt1.o crt/crti.o crt/crtn.o
> + CT_DoExecLog ALL cp -av crt/crt*.o "${CT_SYSROOT_DIR}/usr/lib"
> + CT_DoExecLog ALL ${CT_TARGET}-gcc -nostdlib \
> + -nostartfiles -shared -x c /dev/null -o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
> + CT_EndStep
> +}
> +
> +do_libc() {
> + #local ARCH="$(do_get_arch)"
> + CT_DoStep INFO "Installing C library"
> +
> + # Simply copy files until musl has the ability to build out-of-tree
> + CT_DoLog EXTRA "Copying sources to build directory"
> + CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" \
> + "${CT_BUILD_DIR}/build-libc"
> + cd "${CT_BUILD_DIR}/build-libc"
> +
> + do_libc_configure
> +
> + CT_DoLog EXTRA "Building C library"
> + #CT_DoExecLog ALL make ARCH="${ARCH}" ${JOBSFLAGS}
> + CT_DoExecLog ALL make ${JOBSFLAGS}
> +
> + CT_DoLog EXTRA "Installing C library"
> + #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" install
> + CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install
> +
> + CT_EndStep
> +}
> diff --git a/scripts/functions b/scripts/functions
> index 2e4d4fa..eae3b95 100644
> --- a/scripts/functions
> +++ b/scripts/functions
> @@ -1182,6 +1182,7 @@ CT_DoBuildTargetTuple() {
> case "${CT_LIBC}" in
> *glibc) CT_TARGET_SYS=gnu;;
> uClibc) CT_TARGET_SYS=uclibc;;
> + musl) CT_TARGET_SYS=musl;;
> *) CT_TARGET_SYS=elf;;
> esac
>
> --
> 2.0.1
>
--
.-----------------.--------------------.------------------.--------------------.
| Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
| +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ |
| +33 223 225 172 `------------.-------: X AGAINST | \e/ There is no |
| http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v conspiracy. |
'------------------------------^-------^------------------^--------------------'
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For unsubscribe information see http://sourceware.org/lists.html#faq
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [PATCH 4/4] [libc/musl] Add musl-libc support
2014-08-08 21:21 ` Yann E. MORIN
@ 2014-08-08 21:28 ` Bryan Hundven
0 siblings, 0 replies; 7+ messages in thread
From: Bryan Hundven @ 2014-08-08 21:28 UTC (permalink / raw)
To: Yann E. MORIN; +Cc: crossgcc maillist
Yann, list,
On Fri, Aug 8, 2014 at 2:21 PM, Yann E. MORIN <yann.morin.1998@free.fr> wrote:
> Bryan, All,
>
> On 2014-07-31 19:01 -0700, Bryan Hundven spake thusly:
>> This patch adds initial support for musl-libc.
>
> Applied, with those changes discussed on IRC:
> - gcc musl patch has issues, so removed; we can add it back later,
> - do_get_arch() is dead code for now, dropped.
Perfect! (as discussed on irc)
Hopefully soon the musl gcc stuff will go upstream:
http://www.openwall.com/lists/musl/2014/08/05/10
do_get_arch will be back in a future patch, after 2-pass gcc support.
> Thank you! :-)
Cheers,
> Regards,
> Yann E. MORIN.
-Bryan
>> Musl-libc versions currently supported:
>> * 1.0.3 (Stable)
>> * 1.1.3 (Previous Mainline)
>> * 1.1.4 (Mainline)
>>
>> Futher improvements are needed.
>> * gcc-4.9.x has issues (Might be fixed in musl-1.1.4).
>> * Multilib support is needed.
>> * Checks to make sure paths are correct.
>> * Move to 2-step gcc build. 3-step build is not necessary.
>>
>> Signed-off-by: Bryan Hundven <bryanhundven@gmail.com>
>> ---
>> config/libc/musl.in | 49 ++
>> patches/experimental/gcc/4.6.0/0001-musl.patch | 304 +++++++++
>> patches/experimental/gcc/4.8.0/0001-musl.patch | 401 +++++++++++
>> patches/experimental/gcc/4.8.1/0001-musl.patch | 626 +++++++++++++++++
>> patches/experimental/gcc/4.8.2/0001-musl.patch | 750 +++++++++++++++++++++
>> patches/experimental/gcc/4.8.3/0001-musl.patch | 736 ++++++++++++++++++++
>> patches/experimental/gcc/4.9.0/0001-musl.patch | 706 +++++++++++++++++++
>> .../musl/1.0.3/0001-fix_linker_regression.patch | 64 ++
>> .../1.0.3/0002-fix_mips_linker_regression.patch | 88 +++
>> .../musl/1.1.3/0001-fix_linker_regression.patch | 64 ++
>> .../1.1.3/0002-fix_mips_linker_regression.patch | 88 +++
>> scripts/build/arch/arm.sh | 1 +
>> scripts/build/libc/musl.sh | 128 ++++
>> scripts/functions | 1 +
>> 14 files changed, 4006 insertions(+)
>> create mode 100644 config/libc/musl.in
>> create mode 100644 patches/experimental/gcc/4.6.0/0001-musl.patch
>> create mode 100644 patches/experimental/gcc/4.8.0/0001-musl.patch
>> create mode 100644 patches/experimental/gcc/4.8.1/0001-musl.patch
>> create mode 100644 patches/experimental/gcc/4.8.2/0001-musl.patch
>> create mode 100644 patches/experimental/gcc/4.8.3/0001-musl.patch
>> create mode 100644 patches/experimental/gcc/4.9.0/0001-musl.patch
>> create mode 100644 patches/musl/1.0.3/0001-fix_linker_regression.patch
>> create mode 100644 patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
>> create mode 100644 patches/musl/1.1.3/0001-fix_linker_regression.patch
>> create mode 100644 patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
>> create mode 100644 scripts/build/libc/musl.sh
>>
>> diff --git a/config/libc/musl.in b/config/libc/musl.in
>> new file mode 100644
>> index 0000000..7bab480
>> --- /dev/null
>> +++ b/config/libc/musl.in
>> @@ -0,0 +1,49 @@
>> +# musl options
>> +
>> +## depends on ! WINDOWS && ! BARE_METAL
>> +##
>> +## select LIBC_SUPPORT_THREADS_NATIVE
>> +## select CC_CORE_PASSES_NEEDED
>> +##
>> +## help Musl is a new standard library to power a new generation of Linux-based
>> +## help devices. musl is lightweight, fast, simple, free, and strives to be
>> +## help correct in the sense of standards-conformance and safety.
>> +
>> +config THREADS
>> + default "musl"
>> +
>> +choice
>> + bool
>> + prompt "musl version"
>> +# Don't remove next line
>> +# CT_INSERT_VERSION_BELOW
>> +
>> +config LIBC_MUSL_V_1_1_4
>> + bool
>> + prompt "1.1.4 (Mainline)"
>> + depends on EXPERIMENTAL
>> +
>> +config LIBC_MUSL_V_1_1_3
>> + bool
>> + prompt "1.1.3"
>> + depends on EXPERIMENTAL
>> +
>> +config LIBC_MUSL_V_1_0_3
>> + bool
>> + prompt "1.0.3 (Stable)"
>> +
>> +config LIBC_MUSL_V_CUSTOM
>> + bool
>> + prompt "Custom musl"
>> + depends on EXPERIMENTAL
>> +
>> +endchoice
>> +
>> +config LIBC_VERSION
>> + string
>> +# Don't remove next line
>> +# CT_INSERT_VERSION_STRING_BELOW
>> + default "1.1.4" if LIBC_MUSL_V_1_1_4
>> + default "1.1.3" if LIBC_MUSL_V_1_1_3
>> + default "1.0.3" if LIBC_MUSL_V_1_0_3
>> + default "custom" if LIBC_MUSL_V_CUSTOM
>> diff --git a/patches/experimental/gcc/4.6.0/0001-musl.patch b/patches/experimental/gcc/4.6.0/0001-musl.patch
>> new file mode 100644
>> index 0000000..b0b6c4b
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.6.0/0001-musl.patch
>> @@ -0,0 +1,304 @@
>> +diff --git a/patches/experimental/gcc/4.6.0/0001-musl.patch b/patches/experimental/gcc/4.6.0/0001-musl.patch
>> +new file mode 100644
>> +index 0000000..cee9948
>> +--- /dev/null
>> ++++ b/patches/experimental/gcc/4.6.0/0001-musl.patch
>> +@@ -0,0 +1,231 @@
>> ++diff --git a/config.sub b/config.sub
>> ++--- a/config.sub
>> +++++ b/config.sub
>> ++@@ -125,6 +125,7 @@ esac
>> ++ maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
>> ++ case $maybe_os in
>> ++ nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
>> +++ linux-musl* | \
>> ++ linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
>> ++ knetbsd*-gnu* | netbsd*-gnu* | \
>> ++ kopensolaris*-gnu* | \
>> ++@@ -1310,6 +1311,7 @@ case $os in
>> ++ | -cygwin* | -pe* | -psos* | -moss* | -proelf* | -rtems* \
>> ++ | -mingw32* | -linux-gnu* | -linux-android* \
>> ++ | -linux-newlib* | -linux-uclibc* \
>> +++ | -linux-musl* \
>> ++ | -uxpv* | -beos* | -mpeix* | -udk* \
>> ++ | -interix* | -uwin* | -mks* | -rhapsody* | -darwin* | -opened* \
>> ++ | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
>> ++diff --git a/gcc/config.gcc b/gcc/config.gcc
>> ++--- a/gcc/config.gcc
>> +++++ b/gcc/config.gcc
>> ++@@ -478,7 +478,7 @@ case ${target} in
>> ++ esac
>> ++
>> ++ # Common C libraries.
>> ++-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> +++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> ++
>> ++ # Common parts for widely ported systems.
>> ++ case ${target} in
>> ++@@ -591,6 +591,9 @@ case ${target} in
>> ++ *-*-*uclibc*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> ++ ;;
>> +++ *-*-*musl*)
>> +++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> +++ ;;
>> ++ *)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> ++ ;;
>> ++diff --git a/gcc/config/arm/linux-eabi.h b/gcc/config/arm/linux-eabi.h
>> ++--- a/gcc/config/arm/linux-eabi.h
>> +++++ b/gcc/config/arm/linux-eabi.h
>> ++@@ -64,6 +64,10 @@
>> ++ #undef GLIBC_DYNAMIC_LINKER
>> ++ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.3"
>> ++
>> +++/* musl has no "classic" (i.e. broken) mode */
>> +++#undef MUSL_DYNAMIC_LINKER
>> +++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.so.1"
>> +++
>> ++ /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> ++ use the GNU/Linux version, not the generic BPABI version. */
>> ++ #undef LINK_SPEC
>> ++diff --git a/gcc/config/i386/linux.h b/gcc/config/i386/linux.h
>> ++--- a/gcc/config/i386/linux.h
>> +++++ b/gcc/config/i386/linux.h
>> ++@@ -93,6 +93,7 @@ along with GCC; see the file COPYING3. If not see
>> ++ /* These macros may be overridden in k*bsd-gnu.h and i386/k*bsd-gnu.h. */
>> ++ #define LINK_EMULATION "elf_i386"
>> ++ #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> +++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> ++
>> ++ #undef ASM_SPEC
>> ++ #define ASM_SPEC \
>> ++diff --git a/gcc/config/i386/linux64.h b/gcc/config/i386/linux64.h
>> ++--- a/gcc/config/i386/linux64.h
>> +++++ b/gcc/config/i386/linux64.h
>> ++@@ -65,6 +65,9 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
>> ++ #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> ++ #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> ++
>> +++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> +++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> +++
>> ++ #if TARGET_64BIT_DEFAULT
>> ++ #define SPEC_32 "m32"
>> ++ #define SPEC_64 "!m32"
>> ++diff --git a/gcc/config/linux.h b/gcc/config/linux.h
>> ++--- a/gcc/config/linux.h
>> +++++ b/gcc/config/linux.h
>> ++@@ -33,10 +33,12 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
>> ++ #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> ++ #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> ++ #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> +++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> ++ #else
>> ++ #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> ++ #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> ++ #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> +++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> ++ #endif
>> ++
>> ++ #define LINUX_TARGET_OS_CPP_BUILTINS() \
>> ++@@ -54,18 +56,21 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
>> ++ uClibc or Bionic is the default C library and whether
>> ++ -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> ++
>> ++-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> ++- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> +++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> +++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> ++
>> ++ #if DEFAULT_LIBC == LIBC_GLIBC
>> ++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> ++- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> +++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> ++ #elif DEFAULT_LIBC == LIBC_UCLIBC
>> ++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> ++- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> +++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> ++ #elif DEFAULT_LIBC == LIBC_BIONIC
>> ++-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> ++- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> +++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> +++#elif DEFAULT_LIBC == LIBC_MUSL
>> +++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> +++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> ++ #else
>> ++ #error "Unsupported DEFAULT_LIBC"
>> ++ #endif /* DEFAULT_LIBC */
>> ++@@ -83,13 +88,13 @@ see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
>> ++
>> ++ #define LINUX_DYNAMIC_LINKER \
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> ++- BIONIC_DYNAMIC_LINKER)
>> +++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> ++ #define LINUX_DYNAMIC_LINKER32 \
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> ++- BIONIC_DYNAMIC_LINKER32)
>> +++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> ++ #define LINUX_DYNAMIC_LINKER64 \
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> ++- BIONIC_DYNAMIC_LINKER64)
>> +++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> ++
>> ++ /* Determine whether the entire c99 runtime
>> ++ is present in the runtime library. */
>> ++diff --git a/gcc/config/linux.opt b/gcc/config/linux.opt
>> ++--- a/gcc/config/linux.opt
>> +++++ b/gcc/config/linux.opt
>> ++@@ -30,3 +30,7 @@ Use GNU C library
>> ++ muclibc
>> ++ Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> ++ Use uClibc C library
>> +++
>> +++mmusl
>> +++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> +++Use musl C library
>> ++diff --git a/gcc/config/mips/linux.h b/gcc/config/mips/linux.h
>> ++--- a/gcc/config/mips/linux.h
>> +++++ b/gcc/config/mips/linux.h
>> ++@@ -63,6 +63,8 @@ along with GCC; see the file COPYING3. If not see
>> ++
>> ++ #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> +++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
>> +++
>> ++ /* Borrowed from sparc/linux.h */
>> ++ #undef LINK_SPEC
>> ++ #define LINK_SPEC \
>> ++diff --git a/gcc/ginclude/stddef.h b/gcc/ginclude/stddef.h
>> ++--- a/gcc/ginclude/stddef.h
>> +++++ b/gcc/ginclude/stddef.h
>> ++@@ -184,6 +184,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
>> ++ #ifndef _GCC_SIZE_T
>> ++ #ifndef _SIZET_
>> ++ #ifndef __size_t
>> +++#ifndef __DEFINED_size_t /* musl */
>> ++ #define __size_t__ /* BeOS */
>> ++ #define __SIZE_T__ /* Cray Unicos/Mk */
>> ++ #define _SIZE_T
>> ++@@ -200,6 +201,7 @@ typedef __PTRDIFF_TYPE__ ptrdiff_t;
>> ++ #define ___int_size_t_h
>> ++ #define _GCC_SIZE_T
>> ++ #define _SIZET_
>> +++#define __DEFINED_size_t /* musl */
>> ++ #if defined (__FreeBSD__) && (__FreeBSD__ >= 5)
>> ++ /* __size_t is a typedef on FreeBSD 5!, must not trash it. */
>> ++ #else
>> ++@@ -214,6 +216,7 @@ typedef __SIZE_TYPE__ size_t;
>> ++ typedef long ssize_t;
>> ++ #endif /* __BEOS__ */
>> ++ #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> +++#endif /* __DEFINED_size_t */
>> ++ #endif /* __size_t */
>> ++ #endif /* _SIZET_ */
>> ++ #endif /* _GCC_SIZE_T */
>> ++diff --git a/libgomp/config/posix/time.c b/libgomp/config/posix/time.c
>> ++--- a/libgomp/config/posix/time.c
>> +++++ b/libgomp/config/posix/time.c
>> ++@@ -28,6 +28,8 @@
>> ++ The following implementation uses the most simple POSIX routines.
>> ++ If present, POSIX 4 clocks should be used instead. */
>> ++
>> +++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> +++
>> ++ #include "libgomp.h"
>> ++ #include <unistd.h>
>> ++ #if TIME_WITH_SYS_TIME
>> ++diff --git a/libstdc++-v3/configure.host b/libstdc++-v3/configure.host
>> ++--- a/libstdc++-v3/configure.host
>> +++++ b/libstdc++-v3/configure.host
>> ++@@ -237,6 +237,13 @@ case "${host_os}" in
>> ++ os_include_dir="os/bsd/freebsd"
>> ++ ;;
>> ++ gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> +++ # check for musl by target
>> +++ case "${host_os}" in
>> +++ *-musl*)
>> +++ os_include_dir="os/generic"
>> +++ ;;
>> +++ *)
>> +++
>> ++ if [ "$uclibc" = "yes" ]; then
>> ++ os_include_dir="os/uclibc"
>> ++ elif [ "$bionic" = "yes" ]; then
>> ++@@ -245,6 +252,9 @@ case "${host_os}" in
>> ++ os_include_dir="os/gnu-linux"
>> ++ fi
>> ++ ;;
>> +++
>> +++ esac
>> +++ ;;
>> ++ hpux*)
>> ++ os_include_dir="os/hpux"
>> ++ ;;
>> +diff --git a/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch b/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch
>> +new file mode 100644
>> +index 0000000..e28232d
>> +--- /dev/null
>> ++++ b/patches/experimental/musl/1.1.3/0001-add_missing_signal_limits.patch
>> +@@ -0,0 +1,12 @@
>> ++--- musl-1.1.3.orig/include/signal.h 2014-07-27 20:24:56.194773074 +0300
>> +++++ musl-1.1.3/include/signal.h 2014-07-27 21:27:32.108772419 +0300
>> ++@@ -246,6 +246,9 @@ typedef int sig_atomic_t;
>> ++ void (*signal(int, void (*)(int)))(int);
>> ++ int raise(int);
>> ++
>> +++#define __SIGRTMIN 32
>> +++#define __SIGRTMAX (_NSIG - 1)
>> +++
>> ++ #ifdef __cplusplus
>> ++ }
>> ++ #endif
>> +diff --git a/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch b/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch
>> +new file mode 100644
>> +index 0000000..a166cb5
>> +--- /dev/null
>> ++++ b/patches/experimental/musl/1.1.3/0002-add_missing_ISbit_defs.patch
>> +@@ -0,0 +1,43 @@
>> ++diff -Nupr musl-1.1.3.orig/include/ctype.h musl-1.1.3/include/ctype.h
>> ++--- musl-1.1.3.orig/include/ctype.h 2014-07-30 10:06:03.630712195 +0300
>> +++++ musl-1.1.3/include/ctype.h 2014-07-30 10:06:51.238713586 +0300
>> ++@@ -7,6 +7,39 @@ extern "C" {
>> ++
>> ++ #include <features.h>
>> ++
>> +++#ifndef _ISbit
>> +++/* These are all the characteristics of characters.
>> +++ If there get to be more than 16 distinct characteristics,
>> +++ many things must be changed that use `unsigned short int's.
>> +++
>> +++ The characteristics are stored always in network byte order (big
>> +++ endian). We define the bit value interpretations here dependent on the
>> +++ machine's byte order. */
>> +++
>> +++# include <endian.h>
>> +++# if __BYTE_ORDER == __BIG_ENDIAN
>> +++# define _ISbit(bit) (1 << (bit))
>> +++# else /* __BYTE_ORDER == __LITTLE_ENDIAN */
>> +++# define _ISbit(bit) ((bit) < 8 ? ((1 << (bit)) << 8) : ((1 << (bit)) >> 8))
>> +++# endif
>> +++
>> +++enum
>> +++{
>> +++ _ISupper = _ISbit (0), /* UPPERCASE. */
>> +++ _ISlower = _ISbit (1), /* lowercase. */
>> +++ _ISalpha = _ISbit (2), /* Alphabetic. */
>> +++ _ISdigit = _ISbit (3), /* Numeric. */
>> +++ _ISxdigit = _ISbit (4), /* Hexadecimal numeric. */
>> +++ _ISspace = _ISbit (5), /* Whitespace. */
>> +++ _ISprint = _ISbit (6), /* Printing. */
>> +++ _ISgraph = _ISbit (7), /* Graphical. */
>> +++ _ISblank = _ISbit (8), /* Blank (usually SPC and TAB). */
>> +++ _IScntrl = _ISbit (9), /* Control character. */
>> +++ _ISpunct = _ISbit (10), /* Punctuation. */
>> +++ _ISalnum = _ISbit (11) /* Alphanumeric. */
>> +++};
>> +++#endif /* ! _ISbit */
>> +++
>> ++ int isalnum(int);
>> ++ int isalpha(int);
>> ++ int isblank(int);
>> diff --git a/patches/experimental/gcc/4.8.0/0001-musl.patch b/patches/experimental/gcc/4.8.0/0001-musl.patch
>> new file mode 100644
>> index 0000000..e250298
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.8.0/0001-musl.patch
>> @@ -0,0 +1,401 @@
>> +This patch enables support for musl-libc in gcc.
>> +
>> +This patch is not supported by crosstool-ng and was originally found here:
>> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.0-musl.diff
>> +
>> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
>> +---
>> +diff -r 6b1b8174ce29 gcc/config/arm/linux-eabi.h
>> +--- a/gcc/config/arm/linux-eabi.h Fri Mar 29 16:41:20 2013 -0400
>> ++++ b/gcc/config/arm/linux-eabi.h Fri Mar 29 16:41:23 2013 -0400
>> +@@ -77,6 +77,10 @@
>> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
>> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
>> +
>> ++/* musl has no "classic" (i.e. broken) mode */
>> ++#undef MUSL_DYNAMIC_LINKER
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-arm.so.1"
>> ++
>> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> + use the GNU/Linux version, not the generic BPABI version. */
>> + #undef LINK_SPEC
>> +diff -r 6b1b8174ce29 libitm/config/arm/hwcap.cc
>> +--- a/libitm/config/arm/hwcap.cc Fri Mar 29 16:41:20 2013 -0400
>> ++++ b/libitm/config/arm/hwcap.cc Fri Mar 29 16:41:23 2013 -0400
>> +@@ -40,7 +40,11 @@
>> +
>> + #ifdef __linux__
>> + #include <unistd.h>
>> ++#ifdef __GLIBC__
>> + #include <sys/fcntl.h>
>> ++#else
>> ++#include <fcntl.h>
>> ++#endif
>> + #include <elf.h>
>> +
>> + static void __attribute__((constructor))
>> +# HG changeset patch
>> +# Parent 2b29df135cf04fe23c38301f6d0fc5796366aecf
>> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
>> +
>> +diff -r 2b29df135cf0 gcc/config.gcc
>> +--- a/gcc/config.gcc Fri Mar 29 16:41:11 2013 -0400
>> ++++ b/gcc/config.gcc Fri Mar 29 16:41:14 2013 -0400
>> +@@ -549,7 +549,7 @@
>> + esac
>> +
>> + # Common C libraries.
>> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> +
>> + # Common parts for widely ported systems.
>> + case ${target} in
>> +@@ -652,6 +652,9 @@
>> + *-*-*uclibc*)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> + ;;
>> ++ *-*-*musl*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> ++ ;;
>> + *)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> + ;;
>> +diff -r 2b29df135cf0 gcc/config/linux.h
>> +--- a/gcc/config/linux.h Fri Mar 29 16:41:11 2013 -0400
>> ++++ b/gcc/config/linux.h Fri Mar 29 16:41:14 2013 -0400
>> +@@ -32,10 +32,12 @@
>> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> + #else
>> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> + #endif
>> +
>> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
>> +@@ -53,18 +55,21 @@
>> + uClibc or Bionic is the default C library and whether
>> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> +
>> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> +
>> + #if DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> + #elif DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> + #elif DEFAULT_LIBC == LIBC_BIONIC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif /* DEFAULT_LIBC */
>> +@@ -84,16 +89,16 @@
>> +
>> + #define GNU_USER_DYNAMIC_LINKER \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> +- BIONIC_DYNAMIC_LINKER)
>> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> +- BIONIC_DYNAMIC_LINKER32)
>> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> +- BIONIC_DYNAMIC_LINKER64)
>> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> + #define GNU_USER_DYNAMIC_LINKERX32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
>> +- BIONIC_DYNAMIC_LINKERX32)
>> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
>> +
>> + /* Determine whether the entire c99 runtime
>> + is present in the runtime library. */
>> +diff -r 2b29df135cf0 gcc/config/linux.opt
>> +--- a/gcc/config/linux.opt Fri Mar 29 16:41:11 2013 -0400
>> ++++ b/gcc/config/linux.opt Fri Mar 29 16:41:14 2013 -0400
>> +@@ -30,3 +30,7 @@
>> + muclibc
>> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> + Use uClibc C library
>> ++
>> ++mmusl
>> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> ++Use musl C library
>> +diff -r 2b29df135cf0 gcc/ginclude/stddef.h
>> +--- a/gcc/ginclude/stddef.h Fri Mar 29 16:41:11 2013 -0400
>> ++++ b/gcc/ginclude/stddef.h Fri Mar 29 16:41:14 2013 -0400
>> +@@ -181,6 +181,7 @@
>> + #ifndef _GCC_SIZE_T
>> + #ifndef _SIZET_
>> + #ifndef __size_t
>> ++#ifndef __DEFINED_size_t /* musl */
>> + #define __size_t__ /* BeOS */
>> + #define __SIZE_T__ /* Cray Unicos/Mk */
>> + #define _SIZE_T
>> +@@ -197,6 +198,7 @@
>> + #define ___int_size_t_h
>> + #define _GCC_SIZE_T
>> + #define _SIZET_
>> ++#define __DEFINED_size_t /* musl */
>> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
>> + || defined(__FreeBSD_kernel__)
>> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
>> +@@ -214,6 +216,7 @@
>> + typedef long ssize_t;
>> + #endif /* __BEOS__ */
>> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> ++#endif /* __DEFINED_size_t */
>> + #endif /* __size_t */
>> + #endif /* _SIZET_ */
>> + #endif /* _GCC_SIZE_T */
>> +# HG changeset patch
>> +# Parent 2b94537ce2496c88e7e797c617e5b95e8d7e4785
>> +A fix for libgomp to correctly request a POSIX version for time support.
>> +
>> +diff -r 2b94537ce249 libgomp/config/posix/time.c
>> +--- a/libgomp/config/posix/time.c Fri Mar 29 16:41:14 2013 -0400
>> ++++ b/libgomp/config/posix/time.c Fri Mar 29 16:41:17 2013 -0400
>> +@@ -28,6 +28,8 @@
>> + The following implementation uses the most simple POSIX routines.
>> + If present, POSIX 4 clocks should be used instead. */
>> +
>> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> ++
>> + #include "libgomp.h"
>> + #include <unistd.h>
>> + #if TIME_WITH_SYS_TIME
>> +# HG changeset patch
>> +# Parent f50bb54f331f73405131a30b4f353cfda1c70304
>> +Use the generic implementation of libstdc++ primitives when we're on musl, not the glibc one.
>> +
>> +diff -r f50bb54f331f libstdc++-v3/configure.host
>> +--- a/libstdc++-v3/configure.host Fri Mar 29 16:38:52 2013 -0400
>> ++++ b/libstdc++-v3/configure.host Fri Mar 29 16:41:10 2013 -0400
>> +@@ -264,6 +264,13 @@
>> + os_include_dir="os/bsd/freebsd"
>> + ;;
>> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> ++ # check for musl by target
>> ++ case "${host_os}" in
>> ++ *-musl*)
>> ++ os_include_dir="os/generic"
>> ++ ;;
>> ++ *)
>> ++
>> + if [ "$uclibc" = "yes" ]; then
>> + os_include_dir="os/uclibc"
>> + elif [ "$bionic" = "yes" ]; then
>> +@@ -272,6 +279,9 @@
>> + os_include_dir="os/gnu-linux"
>> + fi
>> + ;;
>> ++
>> ++ esac
>> ++ ;;
>> + hpux*)
>> + os_include_dir="os/hpux"
>> + ;;
>> +# HG changeset patch
>> +# Parent 62831d7bf931658019ba16092c48375177d014b1
>> +Support for mips-linux-musl.
>> +
>> +diff -r 62831d7bf931 gcc/config/mips/linux.h
>> +--- a/gcc/config/mips/linux.h Fri Mar 29 16:41:23 2013 -0400
>> ++++ b/gcc/config/mips/linux.h Fri Mar 29 16:41:25 2013 -0400
>> +@@ -18,3 +18,5 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips.so.1"
>> +# HG changeset patch
>> +# Parent 2ffe76b215fdb082cbbc262536077627757fa9bf
>> +Support for powerpc-linux-musl.
>> +
>> +diff -r 2ffe76b215fd gcc/config.gcc
>> +--- a/gcc/config.gcc Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config.gcc Fri Mar 29 16:41:28 2013 -0400
>> +@@ -2112,6 +2112,10 @@
>> + powerpc*-*-linux*paired*)
>> + tm_file="${tm_file} rs6000/750cl.h" ;;
>> + esac
>> ++ case ${target} in
>> ++ *-linux*-musl*)
>> ++ enable_secureplt=yes ;;
>> ++ esac
>> + if test x${enable_secureplt} = xyes; then
>> + tm_file="rs6000/secureplt.h ${tm_file}"
>> + fi
>> +diff -r 2ffe76b215fd gcc/config/rs6000/linux64.h
>> +--- a/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -364,17 +364,21 @@
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
>> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> + #elif DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> +
>> +
>> + #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
>> +diff -r 2ffe76b215fd gcc/config/rs6000/secureplt.h
>> +--- a/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -18,3 +18,4 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
>> +diff -r 2ffe76b215fd gcc/config/rs6000/sysv4.h
>> +--- a/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -551,6 +551,9 @@
>> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
>> + #endif
>> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
>> ++#endif
>> +
>> + /* Pass -G xxx to the compiler and set correct endian mode. */
>> + #define CC1_SPEC "%{G*} %(cc1_cpu) \
>> +@@ -611,7 +614,8 @@
>> + %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
>> + %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
>> + %{mcall-i960-old: --oformat elf32-powerpcle} \
>> +- }}}}"
>> ++ }}}} \
>> ++%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
>> +
>> + /* Any specific OS flags. */
>> + #define LINK_OS_SPEC "\
>> +@@ -789,15 +793,18 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> +
>> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
>> + %{rdynamic:-export-dynamic} \
>> +@@ -923,6 +930,7 @@
>> + { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
>> + { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
>> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
>> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
>> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
>> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
>> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
>> +diff -r 2ffe76b215fd libgcc/config/rs6000/linux-unwind.h
>> +--- a/libgcc/config/rs6000/linux-unwind.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/libgcc/config/rs6000/linux-unwind.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -258,6 +258,7 @@
>> +
>> + return _URC_NO_REASON;
>> + }
>> ++#endif
>> +
>> + #define MD_FROB_UPDATE_CONTEXT frob_update_context
>> +
>> +# HG changeset patch
>> +# Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
>> +Support for i386-linux-musl and x86_64-linux-musl.
>> +
>> +diff -r 3ea10cd626cb gcc/config/i386/linux.h
>> +--- a/gcc/config/i386/linux.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/gcc/config/i386/linux.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -21,3 +21,4 @@
>> +
>> + #define GNU_USER_LINK_EMULATION "elf_i386"
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> +diff -r 3ea10cd626cb gcc/config/i386/linux64.h
>> +--- a/gcc/config/i386/linux64.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/gcc/config/i386/linux64.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -30,3 +30,7 @@
>> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
>> +diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
>> +--- a/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -25,16 +25,19 @@
>> + #ifndef LIBITM_X86_TLS_H
>> + #define LIBITM_X86_TLS_H 1
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + /* Use slots in the TCB head rather than __thread lookups.
>> + GLIBC has reserved words 10 through 13 for TM. */
>> + #define HAVE_ARCH_GTM_THREAD 1
>> + #define HAVE_ARCH_GTM_THREAD_DISP 1
>> + #endif
>> ++#endif
>> +
>> + #include "config/generic/tls.h"
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + namespace GTM HIDDEN {
>> +
>> + #ifdef __x86_64__
>> +@@ -101,5 +104,6 @@
>> +
>> + } // namespace GTM
>> + #endif /* >= GLIBC 2.10 */
>> ++#endif
>> +
>> + #endif // LIBITM_X86_TLS_H
>> diff --git a/patches/experimental/gcc/4.8.1/0001-musl.patch b/patches/experimental/gcc/4.8.1/0001-musl.patch
>> new file mode 100644
>> index 0000000..2c1c0d3
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.8.1/0001-musl.patch
>> @@ -0,0 +1,626 @@
>> +This patch enables support for musl-libc in gcc.
>> +
>> +This patch is not supported by crosstool-ng and was originally found here:
>> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.1-musl.diff
>> +
>> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
>> +---
>> +diff -r f50bb54f331f libstdc++-v3/configure.host
>> +--- a/libstdc++-v3/configure.host Fri Mar 29 16:38:52 2013 -0400
>> ++++ b/libstdc++-v3/configure.host Fri Mar 29 16:41:10 2013 -0400
>> +@@ -264,6 +264,13 @@
>> + os_include_dir="os/bsd/freebsd"
>> + ;;
>> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> ++ # check for musl by target
>> ++ case "${host_os}" in
>> ++ *-musl*)
>> ++ os_include_dir="os/generic"
>> ++ ;;
>> ++ *)
>> ++
>> + if [ "$uclibc" = "yes" ]; then
>> + os_include_dir="os/uclibc"
>> + elif [ "$bionic" = "yes" ]; then
>> +@@ -272,6 +279,9 @@
>> + os_include_dir="os/gnu-linux"
>> + fi
>> + ;;
>> ++
>> ++ esac
>> ++ ;;
>> + hpux*)
>> + os_include_dir="os/hpux"
>> + ;;
>> +# HG changeset patch
>> +# Parent 572f7b4d1c50cefde3aa2c43d06040fc308ad989
>> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
>> +
>> +diff -r 572f7b4d1c50 gcc/config.gcc
>> +--- a/gcc/config.gcc Sun Sep 08 22:58:18 2013 -0400
>> ++++ b/gcc/config.gcc Mon Sep 09 12:48:34 2013 -0400
>> +@@ -549,7 +549,7 @@
>> + esac
>> +
>> + # Common C libraries.
>> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> +
>> + # Common parts for widely ported systems.
>> + case ${target} in
>> +@@ -652,6 +652,9 @@
>> + *-*-*uclibc*)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> + ;;
>> ++ *-*-*musl*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> ++ ;;
>> + *)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> + ;;
>> +diff -r 572f7b4d1c50 gcc/config/linux.h
>> +--- a/gcc/config/linux.h Sun Sep 08 22:58:18 2013 -0400
>> ++++ b/gcc/config/linux.h Mon Sep 09 12:48:34 2013 -0400
>> +@@ -32,10 +32,12 @@
>> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> + #else
>> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> + #endif
>> +
>> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
>> +@@ -53,18 +55,21 @@
>> + uClibc or Bionic is the default C library and whether
>> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> +
>> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> +
>> + #if DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> + #elif DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> + #elif DEFAULT_LIBC == LIBC_BIONIC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif /* DEFAULT_LIBC */
>> +@@ -84,21 +89,21 @@
>> +
>> + #define GNU_USER_DYNAMIC_LINKER \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> +- BIONIC_DYNAMIC_LINKER)
>> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> +- BIONIC_DYNAMIC_LINKER32)
>> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> +- BIONIC_DYNAMIC_LINKER64)
>> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> + #define GNU_USER_DYNAMIC_LINKERX32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
>> +- BIONIC_DYNAMIC_LINKERX32)
>> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
>> +
>> + /* Determine whether the entire c99 runtime
>> + is present in the runtime library. */
>> + #undef TARGET_C99_FUNCTIONS
>> +-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
>> ++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
>> +
>> + /* Whether we have sincos that follows the GNU extension. */
>> + #undef TARGET_HAS_SINCOS
>> +@@ -107,3 +112,74 @@
>> + /* Whether we have Bionic libc runtime */
>> + #undef TARGET_HAS_BIONIC
>> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
>> ++
>> ++/* musl avoids problematic includes by rearranging the include directories.
>> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
>> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
>> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
>> ++
>> ++#ifdef LOCAL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++#endif
>> ++
>> ++#ifdef PREFIX_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
>> ++#endif
>> ++
>> ++#ifdef CROSS_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#ifdef TOOL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
>> ++#endif
>> ++
>> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#endif
>> ++
>> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
>> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#else
>> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
>> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#undef INCLUDE_DEFAULTS
>> ++#define INCLUDE_DEFAULTS \
>> ++ { \
>> ++ INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
>> ++ { 0, 0, 0, 0, 0, 0 } \
>> ++ }
>> ++#endif
>> +diff -r 572f7b4d1c50 gcc/config/linux.opt
>> +--- a/gcc/config/linux.opt Sun Sep 08 22:58:18 2013 -0400
>> ++++ b/gcc/config/linux.opt Mon Sep 09 12:48:34 2013 -0400
>> +@@ -30,3 +30,7 @@
>> + muclibc
>> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> + Use uClibc C library
>> ++
>> ++mmusl
>> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> ++Use musl C library
>> +diff -r 572f7b4d1c50 gcc/ginclude/stddef.h
>> +--- a/gcc/ginclude/stddef.h Sun Sep 08 22:58:18 2013 -0400
>> ++++ b/gcc/ginclude/stddef.h Mon Sep 09 12:48:34 2013 -0400
>> +@@ -181,6 +181,7 @@
>> + #ifndef _GCC_SIZE_T
>> + #ifndef _SIZET_
>> + #ifndef __size_t
>> ++#ifndef __DEFINED_size_t /* musl */
>> + #define __size_t__ /* BeOS */
>> + #define __SIZE_T__ /* Cray Unicos/Mk */
>> + #define _SIZE_T
>> +@@ -197,6 +198,7 @@
>> + #define ___int_size_t_h
>> + #define _GCC_SIZE_T
>> + #define _SIZET_
>> ++#define __DEFINED_size_t /* musl */
>> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
>> + || defined(__FreeBSD_kernel__)
>> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
>> +@@ -214,6 +216,7 @@
>> + typedef long ssize_t;
>> + #endif /* __BEOS__ */
>> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> ++#endif /* __DEFINED_size_t */
>> + #endif /* __size_t */
>> + #endif /* _SIZET_ */
>> + #endif /* _GCC_SIZE_T */
>> +# HG changeset patch
>> +# Parent 2b94537ce2496c88e7e797c617e5b95e8d7e4785
>> +A fix for libgomp to correctly request a POSIX version for time support.
>> +
>> +diff -r 2b94537ce249 libgomp/config/posix/time.c
>> +--- a/libgomp/config/posix/time.c Fri Mar 29 16:41:14 2013 -0400
>> ++++ b/libgomp/config/posix/time.c Fri Mar 29 16:41:17 2013 -0400
>> +@@ -28,6 +28,8 @@
>> + The following implementation uses the most simple POSIX routines.
>> + If present, POSIX 4 clocks should be used instead. */
>> +
>> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> ++
>> + #include "libgomp.h"
>> + #include <unistd.h>
>> + #if TIME_WITH_SYS_TIME
>> +diff -r 7cba4201a2ae libgcc/unwind-dw2-fde-dip.c
>> +--- a/libgcc/unwind-dw2-fde-dip.c Sat Jul 27 22:53:05 2013 -0400
>> ++++ b/libgcc/unwind-dw2-fde-dip.c Sat Jul 27 22:57:08 2013 -0400
>> +@@ -46,33 +46,13 @@
>> + #include "unwind-compat.h"
>> + #include "gthr.h"
>> +
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
>> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
>> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
>> + # define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__BIONIC__)
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
>> +-# define ElfW __ElfN
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__OpenBSD__)
>> +-# define ElfW(type) Elf_##type
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(TARGET_DL_ITERATE_PHDR) \
>> +- && defined(__sun__) && defined(__svr4__)
>> +-# define USE_PT_GNU_EH_FRAME
>> ++# ifdef __OpenBSD__
>> ++# define ElfW(type) Elf_##typ
>> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
>> ++# define ElfW __ElfN
>> ++# endif
>> + #endif
>> +
>> + #if defined(USE_PT_GNU_EH_FRAME)
>> +diff -r 75d9c38318a7 gcc/configure
>> +--- a/gcc/configure Tue Sep 24 06:52:49 2013 -0400
>> ++++ b/gcc/configure Tue Sep 24 06:54:33 2013 -0400
>> +@@ -26736,6 +26736,9 @@
>> + else
>> + gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + # glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -26769,6 +26772,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
>> +@@ -26851,6 +26855,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> +
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +diff -r 75d9c38318a7 gcc/configure.ac
>> +--- a/gcc/configure.ac Tue Sep 24 06:52:49 2013 -0400
>> ++++ b/gcc/configure.ac Tue Sep 24 06:54:33 2013 -0400
>> +@@ -4719,6 +4719,9 @@
>> + gcc_cv_libc_provides_ssp,
>> + [gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + [# glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -4752,6 +4755,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
>> +@@ -4817,6 +4821,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +# HG changeset patch
>> +# Parent 94e435662aff38e86c9ca0dff4bbf451e0190b34
>> +Get rid of ever-broken fixincludes on musl.
>> +
>> +
>> +diff -r 94e435662aff -r e27957848dc8 fixincludes/mkfixinc.sh
>> +--- a/fixincludes/mkfixinc.sh Sat Jul 27 23:37:20 2013 -0400
>> ++++ b/fixincludes/mkfixinc.sh Sat Jul 27 23:43:03 2013 -0400
>> +@@ -19,7 +19,8 @@
>> + powerpc-*-eabi* | \
>> + powerpc-*-rtems* | \
>> + powerpcle-*-eabisim* | \
>> +- powerpcle-*-eabi* )
>> ++ powerpcle-*-eabi* | \
>> ++ *-musl* )
>> + # IF there is no include fixing,
>> + # THEN create a no-op fixer and exit
>> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
>> +# HG changeset patch
>> +# Parent 3ea10cd626cb7abdfd56d3fe8d2c9ed58a82797b
>> +Support for i386-linux-musl and x86_64-linux-musl.
>> +
>> +diff -r 3ea10cd626cb gcc/config/i386/linux.h
>> +--- a/gcc/config/i386/linux.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/gcc/config/i386/linux.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -21,3 +21,4 @@
>> +
>> + #define GNU_USER_LINK_EMULATION "elf_i386"
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> +diff -r 3ea10cd626cb gcc/config/i386/linux64.h
>> +--- a/gcc/config/i386/linux64.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/gcc/config/i386/linux64.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -30,3 +30,7 @@
>> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
>> +diff -r 3ea10cd626cb libitm/config/linux/x86/tls.h
>> +--- a/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:17 2013 -0400
>> ++++ b/libitm/config/linux/x86/tls.h Fri Mar 29 16:41:20 2013 -0400
>> +@@ -25,16 +25,19 @@
>> + #ifndef LIBITM_X86_TLS_H
>> + #define LIBITM_X86_TLS_H 1
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + /* Use slots in the TCB head rather than __thread lookups.
>> + GLIBC has reserved words 10 through 13 for TM. */
>> + #define HAVE_ARCH_GTM_THREAD 1
>> + #define HAVE_ARCH_GTM_THREAD_DISP 1
>> + #endif
>> ++#endif
>> +
>> + #include "config/generic/tls.h"
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + namespace GTM HIDDEN {
>> +
>> + #ifdef __x86_64__
>> +@@ -101,5 +104,6 @@
>> +
>> + } // namespace GTM
>> + #endif /* >= GLIBC 2.10 */
>> ++#endif
>> +
>> + #endif // LIBITM_X86_TLS_H
>> +# HG changeset patch
>> +# Parent c3eb69047e35491fda9cd9ab1ee2ace1299c793c
>> +Support for arm-linux-musl.
>> +
>> +diff -r c3eb69047e35 gcc/config/arm/linux-eabi.h
>> +--- a/gcc/config/arm/linux-eabi.h Thu Sep 19 07:11:38 2013 -0400
>> ++++ b/gcc/config/arm/linux-eabi.h Thu Sep 19 08:56:47 2013 -0400
>> +@@ -77,6 +77,23 @@
>> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
>> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
>> +
>> ++/* For ARM musl currently supports four dynamic linkers:
>> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
>> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
>> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
>> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
>> ++ musl does not support the legacy OABI mode.
>> ++ All the dynamic linkers live in /lib.
>> ++ We default to soft-float, EL. */
>> ++#undef MUSL_DYNAMIC_LINKER
>> ++#if TARGET_BIG_ENDIAN_DEFAULT
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER \
>> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
>> ++
>> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> + use the GNU/Linux version, not the generic BPABI version. */
>> + #undef LINK_SPEC
>> +diff -r c3eb69047e35 libitm/config/arm/hwcap.cc
>> +--- a/libitm/config/arm/hwcap.cc Thu Sep 19 07:11:38 2013 -0400
>> ++++ b/libitm/config/arm/hwcap.cc Thu Sep 19 08:56:47 2013 -0400
>> +@@ -40,7 +40,11 @@
>> +
>> + #ifdef __linux__
>> + #include <unistd.h>
>> ++#ifdef __GLIBC__
>> + #include <sys/fcntl.h>
>> ++#else
>> ++#include <fcntl.h>
>> ++#endif
>> + #include <elf.h>
>> +
>> + static void __attribute__((constructor))
>> +# HG changeset patch
>> +# Parent 4618ad6f036f1e944a5262ae5875dcdf62c41f8b
>> +Support for mips-linux-musl.
>> +
>> +diff -r 4618ad6f036f gcc/config/mips/linux.h
>> +--- a/gcc/config/mips/linux.h Thu Sep 19 08:56:47 2013 -0400
>> ++++ b/gcc/config/mips/linux.h Thu Sep 19 09:08:11 2013 -0400
>> +@@ -18,3 +18,10 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +# HG changeset patch
>> +# Parent 2ffe76b215fdb082cbbc262536077627757fa9bf
>> +Support for powerpc-linux-musl.
>> +
>> +diff -r 2ffe76b215fd gcc/config.gcc
>> +--- a/gcc/config.gcc Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config.gcc Fri Mar 29 16:41:28 2013 -0400
>> +@@ -2112,6 +2112,10 @@
>> + powerpc*-*-linux*paired*)
>> + tm_file="${tm_file} rs6000/750cl.h" ;;
>> + esac
>> ++ case ${target} in
>> ++ *-linux*-musl*)
>> ++ enable_secureplt=yes ;;
>> ++ esac
>> + if test x${enable_secureplt} = xyes; then
>> + tm_file="rs6000/secureplt.h ${tm_file}"
>> + fi
>> +diff -r 2ffe76b215fd gcc/config/rs6000/linux64.h
>> +--- a/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/linux64.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -364,17 +364,21 @@
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
>> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> + #elif DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> +
>> +
>> + #define LINK_OS_LINUX_SPEC32 "-m elf32ppclinux %{!shared: %{!static: \
>> +diff -r 2ffe76b215fd gcc/config/rs6000/secureplt.h
>> +--- a/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/secureplt.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -18,3 +18,4 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
>> +diff -r 2ffe76b215fd gcc/config/rs6000/sysv4.h
>> +--- a/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:26 2013 -0400
>> ++++ b/gcc/config/rs6000/sysv4.h Fri Mar 29 16:41:28 2013 -0400
>> +@@ -551,6 +551,9 @@
>> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
>> + #endif
>> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
>> ++#endif
>> +
>> + /* Pass -G xxx to the compiler and set correct endian mode. */
>> + #define CC1_SPEC "%{G*} %(cc1_cpu) \
>> +@@ -611,7 +614,8 @@
>> + %{mlittle: --oformat elf32-powerpcle } %{mlittle-endian: --oformat elf32-powerpcle } \
>> + %{!mlittle: %{!mlittle-endian: %{!mbig: %{!mbig-endian: \
>> + %{mcall-i960-old: --oformat elf32-powerpcle} \
>> +- }}}}"
>> ++ }}}} \
>> ++%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
>> +
>> + /* Any specific OS flags. */
>> + #define LINK_OS_SPEC "\
>> +@@ -789,15 +793,18 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> +
>> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
>> + %{rdynamic:-export-dynamic} \
>> +@@ -923,6 +930,7 @@
>> + { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
>> + { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
>> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
>> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
>> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
>> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
>> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
>> +--- a/gcc/config/aarch64/aarch64-linux.h 2013-01-10 21:38:27.000000000 +0100
>> ++++ b/gcc/config/aarch64/aarch64-linux.h 2013-09-12 21:39:34.004829498 +0200
>> +@@ -21,7 +21,11 @@
>> + #ifndef GCC_AARCH64_LINUX_H
>> + #define GCC_AARCH64_LINUX_H
>> +
>> ++/* The AArch64 port currently supports two dynamic linkers:
>> ++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
>> ++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
>> +
>> + #define LINUX_TARGET_LINK_SPEC "%{h*} \
>> + %{static:-Bstatic} \
>> diff --git a/patches/experimental/gcc/4.8.2/0001-musl.patch b/patches/experimental/gcc/4.8.2/0001-musl.patch
>> new file mode 100644
>> index 0000000..3ff2e30
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.8.2/0001-musl.patch
>> @@ -0,0 +1,750 @@
>> +This patch enables support for musl-libc in gcc.
>> +
>> +This patch is not supported by crosstool-ng and was originally found here:
>> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.2-musl.diff
>> +
>> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
>> +---
>> +diff -r df1a439b9058 libstdc++-v3/configure.host
>> +--- a/libstdc++-v3/configure.host Tue Dec 31 14:52:24 2013 -0500
>> ++++ b/libstdc++-v3/configure.host Tue Dec 31 14:54:49 2013 -0500
>> +@@ -264,6 +264,13 @@
>> + os_include_dir="os/bsd/freebsd"
>> + ;;
>> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> ++ # check for musl by target
>> ++ case "${host_os}" in
>> ++ *-musl*)
>> ++ os_include_dir="os/generic"
>> ++ ;;
>> ++ *)
>> ++
>> + if [ "$uclibc" = "yes" ]; then
>> + os_include_dir="os/uclibc"
>> + elif [ "$bionic" = "yes" ]; then
>> +@@ -272,6 +279,9 @@
>> + os_include_dir="os/gnu-linux"
>> + fi
>> + ;;
>> ++
>> ++ esac
>> ++ ;;
>> + hpux*)
>> + os_include_dir="os/hpux"
>> + ;;
>> +# HG changeset patch
>> +# Parent e5b4564f249f8634194bdabef4b3057d0e54ee97
>> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
>> +
>> +diff -r e5b4564f249f gcc/config.gcc
>> +--- a/gcc/config.gcc Tue Dec 31 14:54:49 2013 -0500
>> ++++ b/gcc/config.gcc Tue Dec 31 14:54:52 2013 -0500
>> +@@ -550,7 +550,7 @@
>> + esac
>> +
>> + # Common C libraries.
>> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> +
>> + # Common parts for widely ported systems.
>> + case ${target} in
>> +@@ -653,6 +653,9 @@
>> + *-*-*uclibc*)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> + ;;
>> ++ *-*-*musl*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> ++ ;;
>> + *)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> + ;;
>> +diff -r e5b4564f249f gcc/config/linux.h
>> +--- a/gcc/config/linux.h Tue Dec 31 14:54:49 2013 -0500
>> ++++ b/gcc/config/linux.h Tue Dec 31 14:54:52 2013 -0500
>> +@@ -32,10 +32,12 @@
>> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> + #else
>> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> + #endif
>> +
>> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
>> +@@ -53,18 +55,21 @@
>> + uClibc or Bionic is the default C library and whether
>> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> +
>> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> +
>> + #if DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> + #elif DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> + #elif DEFAULT_LIBC == LIBC_BIONIC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif /* DEFAULT_LIBC */
>> +@@ -84,21 +89,21 @@
>> +
>> + #define GNU_USER_DYNAMIC_LINKER \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> +- BIONIC_DYNAMIC_LINKER)
>> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> +- BIONIC_DYNAMIC_LINKER32)
>> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> +- BIONIC_DYNAMIC_LINKER64)
>> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> + #define GNU_USER_DYNAMIC_LINKERX32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
>> +- BIONIC_DYNAMIC_LINKERX32)
>> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
>> +
>> + /* Determine whether the entire c99 runtime
>> + is present in the runtime library. */
>> + #undef TARGET_C99_FUNCTIONS
>> +-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
>> ++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
>> +
>> + /* Whether we have sincos that follows the GNU extension. */
>> + #undef TARGET_HAS_SINCOS
>> +@@ -107,3 +112,74 @@
>> + /* Whether we have Bionic libc runtime */
>> + #undef TARGET_HAS_BIONIC
>> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
>> ++
>> ++/* musl avoids problematic includes by rearranging the include directories.
>> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
>> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
>> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
>> ++
>> ++#ifdef LOCAL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++#endif
>> ++
>> ++#ifdef PREFIX_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
>> ++#endif
>> ++
>> ++#ifdef CROSS_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#ifdef TOOL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
>> ++#endif
>> ++
>> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#endif
>> ++
>> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
>> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#else
>> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
>> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#undef INCLUDE_DEFAULTS
>> ++#define INCLUDE_DEFAULTS \
>> ++ { \
>> ++ INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
>> ++ { 0, 0, 0, 0, 0, 0 } \
>> ++ }
>> ++#endif
>> +diff -r e5b4564f249f gcc/config/linux.opt
>> +--- a/gcc/config/linux.opt Tue Dec 31 14:54:49 2013 -0500
>> ++++ b/gcc/config/linux.opt Tue Dec 31 14:54:52 2013 -0500
>> +@@ -30,3 +30,7 @@
>> + muclibc
>> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> + Use uClibc C library
>> ++
>> ++mmusl
>> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> ++Use musl C library
>> +diff -r e5b4564f249f gcc/ginclude/stddef.h
>> +--- a/gcc/ginclude/stddef.h Tue Dec 31 14:54:49 2013 -0500
>> ++++ b/gcc/ginclude/stddef.h Tue Dec 31 14:54:52 2013 -0500
>> +@@ -181,6 +181,7 @@
>> + #ifndef _GCC_SIZE_T
>> + #ifndef _SIZET_
>> + #ifndef __size_t
>> ++#ifndef __DEFINED_size_t /* musl */
>> + #define __size_t__ /* BeOS */
>> + #define __SIZE_T__ /* Cray Unicos/Mk */
>> + #define _SIZE_T
>> +@@ -197,6 +198,7 @@
>> + #define ___int_size_t_h
>> + #define _GCC_SIZE_T
>> + #define _SIZET_
>> ++#define __DEFINED_size_t /* musl */
>> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
>> + || defined(__FreeBSD_kernel__)
>> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
>> +@@ -214,6 +216,7 @@
>> + typedef long ssize_t;
>> + #endif /* __BEOS__ */
>> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> ++#endif /* __DEFINED_size_t */
>> + #endif /* __size_t */
>> + #endif /* _SIZET_ */
>> + #endif /* _GCC_SIZE_T */
>> +# HG changeset patch
>> +# Parent e08e44e39f5edde422f444487422046147d5821e
>> +A fix for libgomp to correctly request a POSIX version for time support.
>> +
>> +diff -r e08e44e39f5e libgomp/config/posix/time.c
>> +--- a/libgomp/config/posix/time.c Tue Dec 31 14:54:52 2013 -0500
>> ++++ b/libgomp/config/posix/time.c Tue Dec 31 14:54:55 2013 -0500
>> +@@ -28,6 +28,8 @@
>> + The following implementation uses the most simple POSIX routines.
>> + If present, POSIX 4 clocks should be used instead. */
>> +
>> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> ++
>> + #include "libgomp.h"
>> + #include <unistd.h>
>> + #if TIME_WITH_SYS_TIME
>> +diff -r 809c85574bfe libgcc/unwind-dw2-fde-dip.c
>> +--- a/libgcc/unwind-dw2-fde-dip.c Tue Dec 31 14:54:55 2013 -0500
>> ++++ b/libgcc/unwind-dw2-fde-dip.c Tue Dec 31 14:54:58 2013 -0500
>> +@@ -46,33 +46,13 @@
>> + #include "unwind-compat.h"
>> + #include "gthr.h"
>> +
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
>> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
>> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
>> + # define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__BIONIC__)
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
>> +-# define ElfW __ElfN
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__OpenBSD__)
>> +-# define ElfW(type) Elf_##type
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(TARGET_DL_ITERATE_PHDR) \
>> +- && defined(__sun__) && defined(__svr4__)
>> +-# define USE_PT_GNU_EH_FRAME
>> ++# ifdef __OpenBSD__
>> ++# define ElfW(type) Elf_##type
>> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
>> ++# define ElfW __ElfN
>> ++# endif
>> + #endif
>> +
>> + #if defined(USE_PT_GNU_EH_FRAME)
>> +diff -r 03604918697c gcc/configure
>> +--- a/gcc/configure Tue Dec 31 14:54:58 2013 -0500
>> ++++ b/gcc/configure Tue Dec 31 14:55:01 2013 -0500
>> +@@ -26739,6 +26739,9 @@
>> + else
>> + gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + # glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -26772,6 +26775,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
>> +@@ -26854,6 +26858,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> +
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +diff -r 03604918697c gcc/configure.ac
>> +--- a/gcc/configure.ac Tue Dec 31 14:54:58 2013 -0500
>> ++++ b/gcc/configure.ac Tue Dec 31 14:55:01 2013 -0500
>> +@@ -4722,6 +4722,9 @@
>> + gcc_cv_libc_provides_ssp,
>> + [gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + [# glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -4755,6 +4758,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
>> +@@ -4820,6 +4824,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +# HG changeset patch
>> +# Parent 600a8a422ccaf5627ad1f5a138e7398df2b9e9d8
>> +Get rid of ever-broken fixincludes on musl.
>> +
>> +diff -r 600a8a422cca fixincludes/mkfixinc.sh
>> +--- a/fixincludes/mkfixinc.sh Tue Dec 31 14:55:01 2013 -0500
>> ++++ b/fixincludes/mkfixinc.sh Tue Dec 31 14:55:04 2013 -0500
>> +@@ -19,7 +19,8 @@
>> + powerpc-*-eabi* | \
>> + powerpc-*-rtems* | \
>> + powerpcle-*-eabisim* | \
>> +- powerpcle-*-eabi* )
>> ++ powerpcle-*-eabi* | \
>> ++ *-musl* )
>> + # IF there is no include fixing,
>> + # THEN create a no-op fixer and exit
>> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
>> +# HG changeset patch
>> +# Parent 4696c3bf3d913eca88e9385ea9717541dfe1e033
>> +Support for i386-linux-musl and x86_64-linux-musl.
>> +
>> +diff -r 4696c3bf3d91 gcc/config/i386/linux.h
>> +--- a/gcc/config/i386/linux.h Tue Dec 31 14:55:04 2013 -0500
>> ++++ b/gcc/config/i386/linux.h Tue Dec 31 14:55:08 2013 -0500
>> +@@ -21,3 +21,4 @@
>> +
>> + #define GNU_USER_LINK_EMULATION "elf_i386"
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> +diff -r 4696c3bf3d91 gcc/config/i386/linux64.h
>> +--- a/gcc/config/i386/linux64.h Tue Dec 31 14:55:04 2013 -0500
>> ++++ b/gcc/config/i386/linux64.h Tue Dec 31 14:55:08 2013 -0500
>> +@@ -30,3 +30,7 @@
>> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
>> +diff -r 4696c3bf3d91 libitm/config/linux/x86/tls.h
>> +--- a/libitm/config/linux/x86/tls.h Tue Dec 31 14:55:04 2013 -0500
>> ++++ b/libitm/config/linux/x86/tls.h Tue Dec 31 14:55:08 2013 -0500
>> +@@ -25,16 +25,19 @@
>> + #ifndef LIBITM_X86_TLS_H
>> + #define LIBITM_X86_TLS_H 1
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + /* Use slots in the TCB head rather than __thread lookups.
>> + GLIBC has reserved words 10 through 13 for TM. */
>> + #define HAVE_ARCH_GTM_THREAD 1
>> + #define HAVE_ARCH_GTM_THREAD_DISP 1
>> + #endif
>> ++#endif
>> +
>> + #include "config/generic/tls.h"
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + namespace GTM HIDDEN {
>> +
>> + #ifdef __x86_64__
>> +@@ -101,5 +104,6 @@
>> +
>> + } // namespace GTM
>> + #endif /* >= GLIBC 2.10 */
>> ++#endif
>> +
>> + #endif // LIBITM_X86_TLS_H
>> +# HG changeset patch
>> +# Parent 6738fd6f6fcc2a72f2ba527bda3325642af26885
>> +Support for arm-linux-musl.
>> +
>> +diff -r 6738fd6f6fcc gcc/config/arm/linux-eabi.h
>> +--- a/gcc/config/arm/linux-eabi.h Tue Dec 31 14:55:08 2013 -0500
>> ++++ b/gcc/config/arm/linux-eabi.h Tue Dec 31 14:55:11 2013 -0500
>> +@@ -77,6 +77,23 @@
>> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
>> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
>> +
>> ++/* For ARM musl currently supports four dynamic linkers:
>> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
>> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
>> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
>> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
>> ++ musl does not support the legacy OABI mode.
>> ++ All the dynamic linkers live in /lib.
>> ++ We default to soft-float, EL. */
>> ++#undef MUSL_DYNAMIC_LINKER
>> ++#if TARGET_BIG_ENDIAN_DEFAULT
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER \
>> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
>> ++
>> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> + use the GNU/Linux version, not the generic BPABI version. */
>> + #undef LINK_SPEC
>> +diff -r 6738fd6f6fcc libitm/config/arm/hwcap.cc
>> +--- a/libitm/config/arm/hwcap.cc Tue Dec 31 14:55:08 2013 -0500
>> ++++ b/libitm/config/arm/hwcap.cc Tue Dec 31 14:55:11 2013 -0500
>> +@@ -40,7 +40,11 @@
>> +
>> + #ifdef __linux__
>> + #include <unistd.h>
>> ++#ifdef __GLIBC__
>> + #include <sys/fcntl.h>
>> ++#else
>> ++#include <fcntl.h>
>> ++#endif
>> + #include <elf.h>
>> +
>> + static void __attribute__((constructor))
>> +# HG changeset patch
>> +# Parent 7d7383f638705a01fdc18e0e7e0c9cdb6387fc5d
>> +Support for mips-linux-musl.
>> +
>> +diff -r 7d7383f63870 gcc/config/mips/linux.h
>> +--- a/gcc/config/mips/linux.h Tue Dec 31 14:55:11 2013 -0500
>> ++++ b/gcc/config/mips/linux.h Tue Dec 31 14:55:14 2013 -0500
>> +@@ -18,3 +18,10 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +# HG changeset patch
>> +# Parent 89df6d7e91c686da676ce27ef9b9d10522810c26
>> +Support for powerpc-linux-musl.
>> +
>> +diff -r 89df6d7e91c6 gcc/config.gcc
>> +--- a/gcc/config.gcc Tue Dec 31 14:55:14 2013 -0500
>> ++++ b/gcc/config.gcc Tue Dec 31 14:55:17 2013 -0500
>> +@@ -2117,6 +2117,10 @@
>> + powerpc*-*-linux*paired*)
>> + tm_file="${tm_file} rs6000/750cl.h" ;;
>> + esac
>> ++ case ${target} in
>> ++ *-linux*-musl*)
>> ++ enable_secureplt=yes ;;
>> ++ esac
>> + if test x${enable_secureplt} = xyes; then
>> + tm_file="rs6000/secureplt.h ${tm_file}"
>> + fi
>> +diff -r 89df6d7e91c6 gcc/config/rs6000/linux64.h
>> +--- a/gcc/config/rs6000/linux64.h Tue Dec 31 14:55:14 2013 -0500
>> ++++ b/gcc/config/rs6000/linux64.h Tue Dec 31 14:55:17 2013 -0500
>> +@@ -354,17 +354,21 @@
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld64.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
>> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> + #elif DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> +
>> + #undef DEFAULT_ASM_ENDIAN
>> + #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
>> +diff -r 89df6d7e91c6 gcc/config/rs6000/secureplt.h
>> +--- a/gcc/config/rs6000/secureplt.h Tue Dec 31 14:55:14 2013 -0500
>> ++++ b/gcc/config/rs6000/secureplt.h Tue Dec 31 14:55:17 2013 -0500
>> +@@ -18,3 +18,4 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
>> +diff -r 89df6d7e91c6 gcc/config/rs6000/sysv4.h
>> +--- a/gcc/config/rs6000/sysv4.h Tue Dec 31 14:55:14 2013 -0500
>> ++++ b/gcc/config/rs6000/sysv4.h Tue Dec 31 14:55:17 2013 -0500
>> +@@ -550,6 +550,9 @@
>> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
>> + #endif
>> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
>> ++#endif
>> +
>> + /* Pass -G xxx to the compiler and set correct endian mode. */
>> + #define CC1_SPEC "%{G*} %(cc1_cpu)" \
>> +@@ -600,7 +603,8 @@
>> +
>> + /* Override the default target of the linker. */
>> + #define LINK_TARGET_SPEC \
>> +- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
>> ++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
>> ++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
>> +
>> + /* Any specific OS flags. */
>> + #define LINK_OS_SPEC "\
>> +@@ -778,15 +782,18 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> +
>> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
>> + %{rdynamic:-export-dynamic} \
>> +@@ -912,6 +919,7 @@
>> + { "cc1_endian_little", CC1_ENDIAN_LITTLE_SPEC }, \
>> + { "cc1_endian_default", CC1_ENDIAN_DEFAULT_SPEC }, \
>> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
>> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
>> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
>> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
>> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
>> +diff -r d7ce17b2f2d6 gcc/config/aarch64/aarch64-linux.h
>> +--- a/gcc/config/aarch64/aarch64-linux.h Tue Dec 31 14:55:17 2013 -0500
>> ++++ b/gcc/config/aarch64/aarch64-linux.h Tue Dec 31 14:55:20 2013 -0500
>> +@@ -21,7 +21,11 @@
>> + #ifndef GCC_AARCH64_LINUX_H
>> + #define GCC_AARCH64_LINUX_H
>> +
>> ++/* The AArch64 port currently supports two dynamic linkers:
>> ++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
>> ++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
>> +
>> + #define CPP_SPEC "%{pthread:-D_REENTRANT}"
>> +
>> +# HG changeset patch
>> +# Parent f2601e4063d0d58d8ab04185e8baefd560d09496
>> +Microblaze support (again).
>> +
>> +
>> +diff -r f2601e4063d0 -r 0736dfe1aa0d gcc/config/microblaze/linux.h
>> +--- a/gcc/config/microblaze/linux.h Tue Dec 31 14:55:20 2013 -0500
>> ++++ b/gcc/config/microblaze/linux.h Tue Dec 31 15:09:52 2013 -0500
>> +@@ -25,7 +25,22 @@
>> + #undef TLS_NEEDS_GOT
>> + #define TLS_NEEDS_GOT 1
>> +
>> +-#define DYNAMIC_LINKER "/lib/ld.so.1"
>> ++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
>> ++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
>> ++#else
>> ++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
>> ++#endif
>> ++
>> ++
>> + #undef SUBTARGET_EXTRA_SPECS
>> + #define SUBTARGET_EXTRA_SPECS \
>> + { "dynamic_linker", DYNAMIC_LINKER }
>> +From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
>> +From: David Holsgrove <david.holsgrove@xilinx.com>
>> +Date: Fri, 28 Sep 2012 16:32:03 +1000
>> +Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
>> + microblaze.h
>> +
>> +Fixes warnings like;
>> +
>> +warning: format '%zX' expects argument of type 'size_t',
>> +but argument 3 has type 'unsigned int' [-Wformat]
>> +
>> +Changelog
>> +
>> +2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
>> +
>> + * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
>> + and PTRDIFF_TYPE.
>> +
>> +Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
>> +---
>> + gcc/config/microblaze/microblaze.h | 6 ++++++
>> + 1 file changed, 6 insertions(+)
>> +
>> +diff --git a/gcc/config/microblaze/microblaze.h b/gcc/config/microblaze/microblaze.h
>> +index 19cdfed..e772a3f 100644
>> +--- a/gcc/config/microblaze/microblaze.h
>> ++++ b/gcc/config/microblaze/microblaze.h
>> +@@ -213,6 +213,12 @@ extern enum pipeline_type microblaze_pipe;
>> + #define STRICT_ALIGNMENT 1
>> + #define PCC_BITFIELD_TYPE_MATTERS 1
>> +
>> ++#undef SIZE_TYPE
>> ++#define SIZE_TYPE "unsigned int"
>> ++
>> ++#undef PTRDIFF_TYPE
>> ++#define PTRDIFF_TYPE "int"
>> ++
>> + #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
>> + ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
>> + && (ALIGN) < BITS_PER_WORD \
>> +--
>> +1.7.9.5
>> +
>> +--- gcc-4.8.2.org/gcc/config/sh/linux.h
>> ++++ gcc-4.8.2/gcc/config/sh/linux.h
>> +@@ -43,7 +43,14 @@
>> +
>> + #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
>> +
>> ++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
>> ++#define MUSL_DYNAMIC_LINKER_E "eb"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E
>> ++#endif
>> ++
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +
>> + #undef SUBTARGET_LINK_EMUL_SUFFIX
>> + #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
>> +--- gcc-4.8.2.org/gcc/config/sh/sh.c
>> ++++ gcc-4.8.2/gcc/config/sh/sh.c
>> +@@ -22,8 +22,17 @@
>> + /* FIXME: This is a temporary hack, so that we can include <algorithm>
>> + below. <algorithm> will try to include <cstdlib> which will reference
>> + malloc & co, which are poisoned by "system.h". The proper solution is
>> +- to include <cstdlib> in "system.h" instead of <stdlib.h>. */
>> ++ to include <cstdlib> in "system.h" instead of <stdlib.h>.
>> ++ It's also a temporary hack as the inclusion of sstream will cause inclusion
>> ++ of libc's pthread.h (istream->ios->ios_base->atomicity->gth->gthr-default)
>> ++ which in turn includes sched.h, which defines the CPU_ALLOC, which uses
>> ++ the poisoned calloc. the proper fix would be to shield the poison pragmas
>> ++ with some define that is only set when gcc developers do testing.
>> ++*/
>> + #include <cstdlib>
>> ++#include <sstream>
>> ++#include <vector>
>> ++#include <algorithm>
>> +
>> + #include "config.h"
>> + #include "system.h"
>> +@@ -59,10 +68,6 @@
>> + #include "alloc-pool.h"
>> + #include "tm-constrs.h"
>> + #include "opts.h"
>> +-
>> +-#include <sstream>
>> +-#include <vector>
>> +-#include <algorithm>
>> +
>> + int code_for_indirect_jump_scratch = CODE_FOR_indirect_jump_scratch;
>> +
>> diff --git a/patches/experimental/gcc/4.8.3/0001-musl.patch b/patches/experimental/gcc/4.8.3/0001-musl.patch
>> new file mode 100644
>> index 0000000..3e23402
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.8.3/0001-musl.patch
>> @@ -0,0 +1,736 @@
>> +This patch enables support for musl-libc in gcc.
>> +
>> +This patch is not supported by crosstool-ng and was originally found here:
>> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.8.3-musl.diff
>> +
>> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
>> +---
>> +diff -r 3265a3936a0f libstdc++-v3/configure.host
>> +--- a/libstdc++-v3/configure.host Tue May 27 17:11:50 2014 -0400
>> ++++ b/libstdc++-v3/configure.host Tue May 27 17:18:49 2014 -0400
>> +@@ -264,6 +264,13 @@
>> + os_include_dir="os/bsd/freebsd"
>> + ;;
>> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> ++ # check for musl by target
>> ++ case "${host_os}" in
>> ++ *-musl*)
>> ++ os_include_dir="os/generic"
>> ++ ;;
>> ++ *)
>> ++
>> + if [ "$uclibc" = "yes" ]; then
>> + os_include_dir="os/uclibc"
>> + elif [ "$bionic" = "yes" ]; then
>> +@@ -272,6 +279,9 @@
>> + os_include_dir="os/gnu-linux"
>> + fi
>> + ;;
>> ++
>> ++ esac
>> ++ ;;
>> + hpux*)
>> + os_include_dir="os/hpux"
>> + ;;
>> +# HG changeset patch
>> +# Parent feba6705f7e390f69e474a7c761a0eb7add7d414
>> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
>> +
>> +diff -r feba6705f7e3 gcc/config.gcc
>> +--- a/gcc/config.gcc Tue May 27 17:18:49 2014 -0400
>> ++++ b/gcc/config.gcc Tue May 27 17:18:52 2014 -0400
>> +@@ -550,7 +550,7 @@
>> + esac
>> +
>> + # Common C libraries.
>> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> +
>> + # Common parts for widely ported systems.
>> + case ${target} in
>> +@@ -653,6 +653,9 @@
>> + *-*-*uclibc*)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> + ;;
>> ++ *-*-*musl*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> ++ ;;
>> + *)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> + ;;
>> +diff -r feba6705f7e3 gcc/config/linux.h
>> +--- a/gcc/config/linux.h Tue May 27 17:18:49 2014 -0400
>> ++++ b/gcc/config/linux.h Tue May 27 17:18:52 2014 -0400
>> +@@ -32,10 +32,12 @@
>> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> + #else
>> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> + #endif
>> +
>> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
>> +@@ -53,18 +55,21 @@
>> + uClibc or Bionic is the default C library and whether
>> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> +
>> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> +
>> + #if DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> + #elif DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> + #elif DEFAULT_LIBC == LIBC_BIONIC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif /* DEFAULT_LIBC */
>> +@@ -84,21 +89,21 @@
>> +
>> + #define GNU_USER_DYNAMIC_LINKER \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> +- BIONIC_DYNAMIC_LINKER)
>> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> +- BIONIC_DYNAMIC_LINKER32)
>> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> +- BIONIC_DYNAMIC_LINKER64)
>> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> + #define GNU_USER_DYNAMIC_LINKERX32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
>> +- BIONIC_DYNAMIC_LINKERX32)
>> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
>> +
>> + /* Determine whether the entire c99 runtime
>> + is present in the runtime library. */
>> + #undef TARGET_C99_FUNCTIONS
>> +-#define TARGET_C99_FUNCTIONS (OPTION_GLIBC)
>> ++#define TARGET_C99_FUNCTIONS (OPTION_GLIBC || OPTION_MUSL)
>> +
>> + /* Whether we have sincos that follows the GNU extension. */
>> + #undef TARGET_HAS_SINCOS
>> +@@ -107,3 +112,74 @@
>> + /* Whether we have Bionic libc runtime */
>> + #undef TARGET_HAS_BIONIC
>> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
>> ++
>> ++/* musl avoids problematic includes by rearranging the include directories.
>> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
>> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
>> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
>> ++
>> ++#ifdef LOCAL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++#endif
>> ++
>> ++#ifdef PREFIX_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
>> ++#endif
>> ++
>> ++#ifdef CROSS_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#ifdef TOOL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
>> ++#endif
>> ++
>> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#endif
>> ++
>> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
>> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#else
>> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
>> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#undef INCLUDE_DEFAULTS
>> ++#define INCLUDE_DEFAULTS \
>> ++ { \
>> ++ INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
>> ++ { 0, 0, 0, 0, 0, 0 } \
>> ++ }
>> ++#endif
>> +diff -r feba6705f7e3 gcc/config/linux.opt
>> +--- a/gcc/config/linux.opt Tue May 27 17:18:49 2014 -0400
>> ++++ b/gcc/config/linux.opt Tue May 27 17:18:52 2014 -0400
>> +@@ -30,3 +30,7 @@
>> + muclibc
>> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> + Use uClibc C library
>> ++
>> ++mmusl
>> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> ++Use musl C library
>> +diff -r feba6705f7e3 gcc/ginclude/stddef.h
>> +--- a/gcc/ginclude/stddef.h Tue May 27 17:18:49 2014 -0400
>> ++++ b/gcc/ginclude/stddef.h Tue May 27 17:18:52 2014 -0400
>> +@@ -181,6 +181,7 @@
>> + #ifndef _GCC_SIZE_T
>> + #ifndef _SIZET_
>> + #ifndef __size_t
>> ++#ifndef __DEFINED_size_t /* musl */
>> + #define __size_t__ /* BeOS */
>> + #define __SIZE_T__ /* Cray Unicos/Mk */
>> + #define _SIZE_T
>> +@@ -197,6 +198,7 @@
>> + #define ___int_size_t_h
>> + #define _GCC_SIZE_T
>> + #define _SIZET_
>> ++#define __DEFINED_size_t /* musl */
>> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
>> + || defined(__FreeBSD_kernel__)
>> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
>> +@@ -214,6 +216,7 @@
>> + typedef long ssize_t;
>> + #endif /* __BEOS__ */
>> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> ++#endif /* __DEFINED_size_t */
>> + #endif /* __size_t */
>> + #endif /* _SIZET_ */
>> + #endif /* _GCC_SIZE_T */
>> +# HG changeset patch
>> +# Parent 77fd601051c4644b37838a8e5305c6971feab94f
>> +A fix for libgomp to correctly request a POSIX version for time support.
>> +
>> +diff -r 77fd601051c4 libgomp/config/posix/time.c
>> +--- a/libgomp/config/posix/time.c Tue May 27 17:18:52 2014 -0400
>> ++++ b/libgomp/config/posix/time.c Tue May 27 17:18:55 2014 -0400
>> +@@ -28,6 +28,8 @@
>> + The following implementation uses the most simple POSIX routines.
>> + If present, POSIX 4 clocks should be used instead. */
>> +
>> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> ++
>> + #include "libgomp.h"
>> + #include <unistd.h>
>> + #if TIME_WITH_SYS_TIME
>> +diff -r abebeb8818d8 libgcc/unwind-dw2-fde-dip.c
>> +--- a/libgcc/unwind-dw2-fde-dip.c Tue May 27 17:18:55 2014 -0400
>> ++++ b/libgcc/unwind-dw2-fde-dip.c Tue May 27 17:18:58 2014 -0400
>> +@@ -46,33 +46,13 @@
>> + #include "unwind-compat.h"
>> + #include "gthr.h"
>> +
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
>> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
>> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
>> + # define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__BIONIC__)
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
>> +-# define ElfW __ElfN
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__OpenBSD__)
>> +-# define ElfW(type) Elf_##type
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(TARGET_DL_ITERATE_PHDR) \
>> +- && defined(__sun__) && defined(__svr4__)
>> +-# define USE_PT_GNU_EH_FRAME
>> ++# ifdef __OpenBSD__
>> ++# define ElfW(type) Elf_##type
>> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
>> ++# define ElfW __ElfN
>> ++# endif
>> + #endif
>> +
>> + #if defined(USE_PT_GNU_EH_FRAME)
>> +diff -r 68e6894cdeea gcc/configure
>> +--- a/gcc/configure Tue May 27 17:18:58 2014 -0400
>> ++++ b/gcc/configure Tue May 27 17:19:01 2014 -0400
>> +@@ -26821,6 +26821,9 @@
>> + else
>> + gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + # glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -26854,6 +26857,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
>> +@@ -26936,6 +26940,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> +
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +diff -r 68e6894cdeea gcc/configure.ac
>> +--- a/gcc/configure.ac Tue May 27 17:18:58 2014 -0400
>> ++++ b/gcc/configure.ac Tue May 27 17:19:01 2014 -0400
>> +@@ -4750,6 +4750,9 @@
>> + gcc_cv_libc_provides_ssp,
>> + [gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + [# glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -4783,6 +4786,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
>> +@@ -4848,6 +4852,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +# HG changeset patch
>> +# Parent 5e0be25b469181f67d89382c7da201510c229f90
>> +Get rid of ever-broken fixincludes on musl.
>> +
>> +diff -r 5e0be25b4691 fixincludes/mkfixinc.sh
>> +--- a/fixincludes/mkfixinc.sh Tue May 27 17:19:01 2014 -0400
>> ++++ b/fixincludes/mkfixinc.sh Tue May 27 17:19:04 2014 -0400
>> +@@ -19,7 +19,8 @@
>> + powerpc-*-eabi* | \
>> + powerpc-*-rtems* | \
>> + powerpcle-*-eabisim* | \
>> +- powerpcle-*-eabi* )
>> ++ powerpcle-*-eabi* | \
>> ++ *-musl* )
>> + # IF there is no include fixing,
>> + # THEN create a no-op fixer and exit
>> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
>> +# HG changeset patch
>> +# Parent dd2004fbd61c182919b800cec63806060b4228e5
>> +Support for i386-linux-musl and x86_64-linux-musl.
>> +
>> +diff -r dd2004fbd61c gcc/config/i386/linux.h
>> +--- a/gcc/config/i386/linux.h Tue May 27 17:19:04 2014 -0400
>> ++++ b/gcc/config/i386/linux.h Tue May 27 17:19:07 2014 -0400
>> +@@ -21,3 +21,4 @@
>> +
>> + #define GNU_USER_LINK_EMULATION "elf_i386"
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> +diff -r dd2004fbd61c gcc/config/i386/linux64.h
>> +--- a/gcc/config/i386/linux64.h Tue May 27 17:19:04 2014 -0400
>> ++++ b/gcc/config/i386/linux64.h Tue May 27 17:19:07 2014 -0400
>> +@@ -30,3 +30,7 @@
>> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
>> +diff -r dd2004fbd61c libitm/config/linux/x86/tls.h
>> +--- a/libitm/config/linux/x86/tls.h Tue May 27 17:19:04 2014 -0400
>> ++++ b/libitm/config/linux/x86/tls.h Tue May 27 17:19:07 2014 -0400
>> +@@ -25,16 +25,19 @@
>> + #ifndef LIBITM_X86_TLS_H
>> + #define LIBITM_X86_TLS_H 1
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + /* Use slots in the TCB head rather than __thread lookups.
>> + GLIBC has reserved words 10 through 13 for TM. */
>> + #define HAVE_ARCH_GTM_THREAD 1
>> + #define HAVE_ARCH_GTM_THREAD_DISP 1
>> + #endif
>> ++#endif
>> +
>> + #include "config/generic/tls.h"
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + namespace GTM HIDDEN {
>> +
>> + #ifdef __x86_64__
>> +@@ -101,5 +104,6 @@
>> +
>> + } // namespace GTM
>> + #endif /* >= GLIBC 2.10 */
>> ++#endif
>> +
>> + #endif // LIBITM_X86_TLS_H
>> +# HG changeset patch
>> +# Parent 42eeea84a212601568b5a6d17eb28cfba4b45e1d
>> +Support for arm-linux-musl.
>> +
>> +diff -r 42eeea84a212 gcc/config/arm/linux-eabi.h
>> +--- a/gcc/config/arm/linux-eabi.h Tue May 27 17:19:07 2014 -0400
>> ++++ b/gcc/config/arm/linux-eabi.h Tue May 27 17:19:11 2014 -0400
>> +@@ -77,6 +77,23 @@
>> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
>> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
>> +
>> ++/* For ARM musl currently supports four dynamic linkers:
>> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
>> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
>> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
>> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
>> ++ musl does not support the legacy OABI mode.
>> ++ All the dynamic linkers live in /lib.
>> ++ We default to soft-float, EL. */
>> ++#undef MUSL_DYNAMIC_LINKER
>> ++#if TARGET_BIG_ENDIAN_DEFAULT
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER \
>> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
>> ++
>> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> + use the GNU/Linux version, not the generic BPABI version. */
>> + #undef LINK_SPEC
>> +diff -r 42eeea84a212 libitm/config/arm/hwcap.cc
>> +--- a/libitm/config/arm/hwcap.cc Tue May 27 17:19:07 2014 -0400
>> ++++ b/libitm/config/arm/hwcap.cc Tue May 27 17:19:11 2014 -0400
>> +@@ -40,7 +40,11 @@
>> +
>> + #ifdef __linux__
>> + #include <unistd.h>
>> ++#ifdef __GLIBC__
>> + #include <sys/fcntl.h>
>> ++#else
>> ++#include <fcntl.h>
>> ++#endif
>> + #include <elf.h>
>> +
>> + static void __attribute__((constructor))
>> +# HG changeset patch
>> +# Parent fae0f2a79418e010ac48deb6dc84b16524158f4d
>> +Support for mips-linux-musl.
>> +
>> +diff -r fae0f2a79418 gcc/config/mips/linux.h
>> +--- a/gcc/config/mips/linux.h Tue May 27 17:19:10 2014 -0400
>> ++++ b/gcc/config/mips/linux.h Tue May 27 17:19:14 2014 -0400
>> +@@ -18,3 +18,10 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +# HG changeset patch
>> +# Parent 5f732d28ac6e18a515050808509c12a97a63af48
>> +Support for powerpc-linux-musl.
>> +
>> +diff -r 5f732d28ac6e gcc/config.gcc
>> +--- a/gcc/config.gcc Tue May 27 17:19:13 2014 -0400
>> ++++ b/gcc/config.gcc Tue May 27 17:19:17 2014 -0400
>> +@@ -2138,6 +2138,10 @@
>> + powerpc*-*-linux*paired*)
>> + tm_file="${tm_file} rs6000/750cl.h" ;;
>> + esac
>> ++ case ${target} in
>> ++ *-linux*-musl*)
>> ++ enable_secureplt=yes ;;
>> ++ esac
>> + if test x${enable_secureplt} = xyes; then
>> + tm_file="rs6000/secureplt.h ${tm_file}"
>> + fi
>> +diff -r 5f732d28ac6e gcc/config/rs6000/linux64.h
>> +--- a/gcc/config/rs6000/linux64.h Tue May 27 17:19:13 2014 -0400
>> ++++ b/gcc/config/rs6000/linux64.h Tue May 27 17:19:17 2014 -0400
>> +@@ -374,17 +374,21 @@
>> + #endif
>> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
>> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> + #elif DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> +
>> + #undef DEFAULT_ASM_ENDIAN
>> + #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
>> +diff -r 5f732d28ac6e gcc/config/rs6000/secureplt.h
>> +--- a/gcc/config/rs6000/secureplt.h Tue May 27 17:19:13 2014 -0400
>> ++++ b/gcc/config/rs6000/secureplt.h Tue May 27 17:19:17 2014 -0400
>> +@@ -18,3 +18,4 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
>> +diff -r 5f732d28ac6e gcc/config/rs6000/sysv4.h
>> +--- a/gcc/config/rs6000/sysv4.h Tue May 27 17:19:13 2014 -0400
>> ++++ b/gcc/config/rs6000/sysv4.h Tue May 27 17:19:17 2014 -0400
>> +@@ -537,6 +537,9 @@
>> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
>> + #endif
>> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
>> ++#endif
>> +
>> + /* Pass -G xxx to the compiler. */
>> + #define CC1_SPEC "%{G*} %(cc1_cpu)" \
>> +@@ -585,7 +588,8 @@
>> +
>> + /* Override the default target of the linker. */
>> + #define LINK_TARGET_SPEC \
>> +- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
>> ++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
>> ++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
>> +
>> + /* Any specific OS flags. */
>> + #define LINK_OS_SPEC "\
>> +@@ -763,15 +767,18 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> +
>> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
>> + %{rdynamic:-export-dynamic} \
>> +@@ -894,6 +901,7 @@
>> + { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
>> + { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
>> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
>> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
>> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
>> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
>> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
>> +diff -r 4d2277f95a50 gcc/config/aarch64/aarch64-linux.h
>> +--- a/gcc/config/aarch64/aarch64-linux.h Tue May 27 17:19:17 2014 -0400
>> ++++ b/gcc/config/aarch64/aarch64-linux.h Tue May 27 17:19:20 2014 -0400
>> +@@ -21,7 +21,11 @@
>> + #ifndef GCC_AARCH64_LINUX_H
>> + #define GCC_AARCH64_LINUX_H
>> +
>> ++/* The AArch64 port currently supports two dynamic linkers:
>> ++ - ld-linux-aarch64.so.1 - GLIBC dynamic linker
>> ++ - ld-musl-aarch64.so.1 - musl libc dynamic linker */
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64.so.1"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
>> +
>> + #define CPP_SPEC "%{pthread:-D_REENTRANT}"
>> +
>> +# HG changeset patch
>> +# Parent 11f8f95e9940bff12445f189dae33a4a8074ed1a
>> +Microblaze support (again).
>> +
>> +diff -r 11f8f95e9940 gcc/config/microblaze/linux.h
>> +--- a/gcc/config/microblaze/linux.h Tue May 27 17:19:20 2014 -0400
>> ++++ b/gcc/config/microblaze/linux.h Tue May 27 17:19:23 2014 -0400
>> +@@ -25,7 +25,22 @@
>> + #undef TLS_NEEDS_GOT
>> + #define TLS_NEEDS_GOT 1
>> +
>> +-#define DYNAMIC_LINKER "/lib/ld.so.1"
>> ++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
>> ++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
>> ++#else
>> ++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
>> ++#endif
>> ++
>> ++
>> + #undef SUBTARGET_EXTRA_SPECS
>> + #define SUBTARGET_EXTRA_SPECS \
>> + { "dynamic_linker", DYNAMIC_LINKER }
>> +From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
>> +From: David Holsgrove <david.holsgrove@xilinx.com>
>> +Date: Fri, 28 Sep 2012 16:32:03 +1000
>> +Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
>> + microblaze.h
>> +
>> +Fixes warnings like;
>> +
>> +warning: format '%zX' expects argument of type 'size_t',
>> +but argument 3 has type 'unsigned int' [-Wformat]
>> +
>> +Changelog
>> +
>> +2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
>> +
>> + * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
>> + and PTRDIFF_TYPE.
>> +
>> +Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
>> +---
>> + gcc/config/microblaze/microblaze.h | 6 ++++++
>> + 1 file changed, 6 insertions(+)
>> +
>> +diff -r 2af2905d4b10 gcc/config/microblaze/microblaze.h
>> +--- a/gcc/config/microblaze/microblaze.h Tue May 27 17:19:22 2014 -0400
>> ++++ b/gcc/config/microblaze/microblaze.h Tue May 27 17:19:26 2014 -0400
>> +@@ -219,6 +219,12 @@
>> + #undef PTRDIFF_TYPE
>> + #define PTRDIFF_TYPE "int"
>> +
>> ++#undef SIZE_TYPE
>> ++#define SIZE_TYPE "unsigned int"
>> ++
>> ++#undef PTRDIFF_TYPE
>> ++#define PTRDIFF_TYPE "int"
>> ++
>> + #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
>> + ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
>> + && (ALIGN) < BITS_PER_WORD \
>> +diff -Nur gcc-4.8.3.orig/gcc/config/microblaze/microblaze.md gcc-4.8.3/gcc/config/microblaze/microblaze.md
>> +--- gcc-4.8.3.orig/gcc/config/microblaze/microblaze.md 2014-02-23 19:59:26.000000000 +0100
>> ++++ gcc-4.8.3/gcc/config/microblaze/microblaze.md 2014-05-31 20:39:29.978608468 +0200
>> +@@ -1119,18 +1119,6 @@
>> + }
>> + )
>> +
>> +-;;Load and store reverse
>> +-(define_insn "movsi4_rev"
>> +- [(set (match_operand:SI 0 "reg_or_mem_operand" "=r,Q")
>> +- (bswap:SI (match_operand:SF 1 "reg_or_mem_operand" "Q,r")))]
>> +- "TARGET_REORDER"
>> +- "@
>> +- lwr\t%0,%y1,r0
>> +- swr\t%1,%y0,r0"
>> +- [(set_attr "type" "load,store")
>> +- (set_attr "mode" "SI")
>> +- (set_attr "length" "4,4")])
>> +-
>> + ;; 32-bit floating point moves
>> +
>> + (define_expand "movsf"
>> +diff -r 596e2430c627 gcc/config/sh/linux.h
>> +--- a/gcc/config/sh/linux.h Fri Sep 28 16:32:03 2012 +1000
>> ++++ b/gcc/config/sh/linux.h Tue May 27 17:19:29 2014 -0400
>> +@@ -43,7 +43,14 @@
>> +
>> + #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
>> +
>> ++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
>> ++#define MUSL_DYNAMIC_LINKER_E "eb"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E
>> ++#endif
>> ++
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +
>> + #undef SUBTARGET_LINK_EMUL_SUFFIX
>> + #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
>> diff --git a/patches/experimental/gcc/4.9.0/0001-musl.patch b/patches/experimental/gcc/4.9.0/0001-musl.patch
>> new file mode 100644
>> index 0000000..de6f532
>> --- /dev/null
>> +++ b/patches/experimental/gcc/4.9.0/0001-musl.patch
>> @@ -0,0 +1,706 @@
>> +This patch enables support for musl-libc in gcc.
>> +
>> +This patch is not supported by crosstool-ng and was originally found here:
>> + https://bitbucket.org/GregorR/musl-cross/src/27953a1f7085/patches/gcc-4.9.0-musl.diff
>> +
>> +Added-By: Bryan Hundven <bryanhundven@gmail.com>
>> +---
>> +diff -r 2f9df662aaab libstdc++-v3/configure.host
>> +--- a/libstdc++-v3/configure.host Tue May 20 11:00:21 2014 -0400
>> ++++ b/libstdc++-v3/configure.host Tue May 20 11:05:42 2014 -0400
>> +@@ -264,6 +264,13 @@
>> + os_include_dir="os/bsd/freebsd"
>> + ;;
>> + gnu* | linux* | kfreebsd*-gnu | knetbsd*-gnu)
>> ++ # check for musl by target
>> ++ case "${host_os}" in
>> ++ *-musl*)
>> ++ os_include_dir="os/generic"
>> ++ ;;
>> ++ *)
>> ++
>> + if [ "$uclibc" = "yes" ]; then
>> + os_include_dir="os/uclibc"
>> + elif [ "$bionic" = "yes" ]; then
>> +@@ -272,6 +279,9 @@
>> + os_include_dir="os/gnu-linux"
>> + fi
>> + ;;
>> ++
>> ++ esac
>> ++ ;;
>> + hpux*)
>> + os_include_dir="os/hpux"
>> + ;;
>> +# HG changeset patch
>> +# Parent b6f4ce05a3155dbcbc06d72aebdb67e2f8abc094
>> +Adding -mmusl as a musl libc specifier, and the necessary hacks for it to know how to find musl's dynamic linker.
>> +
>> +diff -r b6f4ce05a315 gcc/config.gcc
>> +--- a/gcc/config.gcc Tue May 20 11:05:42 2014 -0400
>> ++++ b/gcc/config.gcc Tue May 20 11:05:45 2014 -0400
>> +@@ -594,7 +594,7 @@
>> + esac
>> +
>> + # Common C libraries.
>> +-tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3"
>> ++tm_defines="$tm_defines LIBC_GLIBC=1 LIBC_UCLIBC=2 LIBC_BIONIC=3 LIBC_MUSL=4"
>> +
>> + # 32-bit x86 processors supported by --with-arch=. Each processor
>> + # MUST be separated by exactly one space.
>> +@@ -719,6 +719,9 @@
>> + *-*-*uclibc*)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_UCLIBC"
>> + ;;
>> ++ *-*-*musl*)
>> ++ tm_defines="$tm_defines DEFAULT_LIBC=LIBC_MUSL"
>> ++ ;;
>> + *)
>> + tm_defines="$tm_defines DEFAULT_LIBC=LIBC_GLIBC"
>> + ;;
>> +diff -r b6f4ce05a315 gcc/config/linux.h
>> +--- a/gcc/config/linux.h Tue May 20 11:05:42 2014 -0400
>> ++++ b/gcc/config/linux.h Tue May 20 11:05:45 2014 -0400
>> +@@ -32,10 +32,12 @@
>> + #define OPTION_GLIBC (DEFAULT_LIBC == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (DEFAULT_LIBC == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (DEFAULT_LIBC == LIBC_BIONIC)
>> ++#define OPTION_MUSL (DEFAULT_LIBC == LIBC_MUSL)
>> + #else
>> + #define OPTION_GLIBC (linux_libc == LIBC_GLIBC)
>> + #define OPTION_UCLIBC (linux_libc == LIBC_UCLIBC)
>> + #define OPTION_BIONIC (linux_libc == LIBC_BIONIC)
>> ++#define OPTION_MUSL (linux_libc == LIBC_MUSL)
>> + #endif
>> +
>> + #define GNU_USER_TARGET_OS_CPP_BUILTINS() \
>> +@@ -53,18 +55,21 @@
>> + uClibc or Bionic is the default C library and whether
>> + -muclibc or -mglibc or -mbionic has been passed to change the default. */
>> +
>> +-#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LD1, LD2, LD3) \
>> +- "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:" LD1 "}}"
>> ++#define CHOOSE_DYNAMIC_LINKER1(LIBC1, LIBC2, LIBC3, LIBC4, LD1, LD2, LD3, LD4) \
>> ++ "%{" LIBC2 ":" LD2 ";:%{" LIBC3 ":" LD3 ";:%{" LIBC4 ":" LD4 ";:" LD1 "}}}"
>> +
>> + #if DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", G, U, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mglibc", "muclibc", "mbionic", "mmusl", G, U, B, M)
>> + #elif DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", U, G, B)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("muclibc", "mglibc", "mbionic", "mmusl", U, G, B, M)
>> + #elif DEFAULT_LIBC == LIBC_BIONIC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U, B) \
>> +- CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", B, G, U)
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mbionic", "mglibc", "muclibc", "mmusl", B, G, U, M)
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, B, M) \
>> ++ CHOOSE_DYNAMIC_LINKER1 ("mmusl", "mglibc", "muclibc", "mbionic", M, G, U, B)
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif /* DEFAULT_LIBC */
>> +@@ -84,21 +89,92 @@
>> +
>> + #define GNU_USER_DYNAMIC_LINKER \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, \
>> +- BIONIC_DYNAMIC_LINKER)
>> ++ BIONIC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, \
>> +- BIONIC_DYNAMIC_LINKER32)
>> ++ BIONIC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, \
>> +- BIONIC_DYNAMIC_LINKER64)
>> ++ BIONIC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> + #define GNU_USER_DYNAMIC_LINKERX32 \
>> + CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKERX32, UCLIBC_DYNAMIC_LINKERX32, \
>> +- BIONIC_DYNAMIC_LINKERX32)
>> ++ BIONIC_DYNAMIC_LINKERX32, MUSL_DYNAMIC_LINKERX32)
>> +
>> + /* Whether we have Bionic libc runtime */
>> + #undef TARGET_HAS_BIONIC
>> + #define TARGET_HAS_BIONIC (OPTION_BIONIC)
>> +
>> ++/* musl avoids problematic includes by rearranging the include directories.
>> ++ * Unfortunately, this is mostly duplicated from cppdefault.c */
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ { GPLUSPLUS_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 }, \
>> ++ { GPLUSPLUS_TOOL_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 1 }, \
>> ++ { GPLUSPLUS_BACKWARD_INCLUDE_DIR, "G++", 1, 1, \
>> ++ GPLUSPLUS_INCLUDE_DIR_ADD_SYSROOT, 0 },
>> ++
>> ++#ifdef LOCAL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 2 }, \
>> ++ { LOCAL_INCLUDE_DIR, 0, 0, 1, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++#endif
>> ++
>> ++#ifdef PREFIX_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ { PREFIX_INCLUDE_DIR, 0, 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_PREFIX
>> ++#endif
>> ++
>> ++#ifdef CROSS_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ { CROSS_INCLUDE_DIR, "GCC", 0, 0, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#ifdef TOOL_INCLUDE_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ { TOOL_INCLUDE_DIR, "BINUTILS", 0, 1, 0, 0},
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_TOOL
>> ++#endif
>> ++
>> ++#ifdef NATIVE_SYSTEM_HEADER_DIR
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 2 }, \
>> ++ { NATIVE_SYSTEM_HEADER_DIR, 0, 0, 0, 1, 0 },
>> ++#else
>> ++#define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#endif
>> ++
>> ++#if defined (CROSS_DIRECTORY_STRUCTURE) && !defined (TARGET_SYSTEM_ROOT)
>> ++# undef INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# define INCLUDE_DEFAULTS_MUSL_LOCAL
>> ++# undef INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++# define INCLUDE_DEFAULTS_MUSL_NATIVE
>> ++#else
>> ++# undef INCLUDE_DEFAULTS_MUSL_CROSS
>> ++# define INCLUDE_DEFAULTS_MUSL_CROSS
>> ++#endif
>> ++
>> ++#undef INCLUDE_DEFAULTS
>> ++#define INCLUDE_DEFAULTS \
>> ++ { \
>> ++ INCLUDE_DEFAULTS_MUSL_GPP \
>> ++ INCLUDE_DEFAULTS_MUSL_PREFIX \
>> ++ INCLUDE_DEFAULTS_MUSL_CROSS \
>> ++ INCLUDE_DEFAULTS_MUSL_TOOL \
>> ++ INCLUDE_DEFAULTS_MUSL_NATIVE \
>> ++ { GCC_INCLUDE_DIR, "GCC", 0, 1, 0, 0 }, \
>> ++ { 0, 0, 0, 0, 0, 0 } \
>> ++ }
>> ++#endif
>> ++
>> + #if (DEFAULT_LIBC == LIBC_UCLIBC) && defined (SINGLE_LIBC) /* uClinux */
>> + /* This is a *uclinux* target. We don't define below macros to normal linux
>> + versions, because doing so would require *uclinux* targets to include
>> +diff -r b6f4ce05a315 gcc/config/linux.opt
>> +--- a/gcc/config/linux.opt Tue May 20 11:05:42 2014 -0400
>> ++++ b/gcc/config/linux.opt Tue May 20 11:05:45 2014 -0400
>> +@@ -30,3 +30,7 @@
>> + muclibc
>> + Target Report RejectNegative Var(linux_libc,LIBC_UCLIBC) Negative(mbionic)
>> + Use uClibc C library
>> ++
>> ++mmusl
>> ++Target Report RejectNegative Var(linux_libc,LIBC_MUSL) Negative(mglibc)
>> ++Use musl C library
>> +diff -r b6f4ce05a315 gcc/ginclude/stddef.h
>> +--- a/gcc/ginclude/stddef.h Tue May 20 11:05:42 2014 -0400
>> ++++ b/gcc/ginclude/stddef.h Tue May 20 11:05:45 2014 -0400
>> +@@ -181,6 +181,7 @@
>> + #ifndef _GCC_SIZE_T
>> + #ifndef _SIZET_
>> + #ifndef __size_t
>> ++#ifndef __DEFINED_size_t /* musl */
>> + #define __size_t__ /* BeOS */
>> + #define __SIZE_T__ /* Cray Unicos/Mk */
>> + #define _SIZE_T
>> +@@ -197,6 +198,7 @@
>> + #define ___int_size_t_h
>> + #define _GCC_SIZE_T
>> + #define _SIZET_
>> ++#define __DEFINED_size_t /* musl */
>> + #if (defined (__FreeBSD__) && (__FreeBSD__ >= 5)) \
>> + || defined(__FreeBSD_kernel__)
>> + /* __size_t is a typedef on FreeBSD 5, must not trash it. */
>> +@@ -214,6 +216,7 @@
>> + typedef long ssize_t;
>> + #endif /* __BEOS__ */
>> + #endif /* !(defined (__GNUG__) && defined (size_t)) */
>> ++#endif /* __DEFINED_size_t */
>> + #endif /* __size_t */
>> + #endif /* _SIZET_ */
>> + #endif /* _GCC_SIZE_T */
>> +# HG changeset patch
>> +# Parent 65d595ef9fc3cdbbde4894d927593f1b0f5bbcb7
>> +A fix for libgomp to correctly request a POSIX version for time support.
>> +
>> +diff -r 65d595ef9fc3 libgomp/config/posix/time.c
>> +--- a/libgomp/config/posix/time.c Tue May 20 11:05:45 2014 -0400
>> ++++ b/libgomp/config/posix/time.c Tue May 20 11:05:48 2014 -0400
>> +@@ -28,6 +28,8 @@
>> + The following implementation uses the most simple POSIX routines.
>> + If present, POSIX 4 clocks should be used instead. */
>> +
>> ++#define _POSIX_C_SOURCE 199309L /* for clocks */
>> ++
>> + #include "libgomp.h"
>> + #include <unistd.h>
>> + #if TIME_WITH_SYS_TIME
>> +diff -r 95f4f1d7668b libgcc/unwind-dw2-fde-dip.c
>> +--- a/libgcc/unwind-dw2-fde-dip.c Tue May 20 11:05:48 2014 -0400
>> ++++ b/libgcc/unwind-dw2-fde-dip.c Tue May 20 11:05:52 2014 -0400
>> +@@ -46,33 +46,13 @@
>> + #include "unwind-compat.h"
>> + #include "gthr.h"
>> +
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && (__GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ > 2) \
>> +- || (__GLIBC__ == 2 && __GLIBC_MINOR__ == 2 && defined(DT_CONFIG)))
>> ++#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) && defined(TARGET_DL_ITERATE_PHDR)
>> + # define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__BIONIC__)
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__FreeBSD__) && __FreeBSD__ >= 7
>> +-# define ElfW __ElfN
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(__OpenBSD__)
>> +-# define ElfW(type) Elf_##type
>> +-# define USE_PT_GNU_EH_FRAME
>> +-#endif
>> +-
>> +-#if !defined(inhibit_libc) && defined(HAVE_LD_EH_FRAME_HDR) \
>> +- && defined(TARGET_DL_ITERATE_PHDR) \
>> +- && defined(__sun__) && defined(__svr4__)
>> +-# define USE_PT_GNU_EH_FRAME
>> ++# ifdef __OpenBSD__
>> ++# define ElfW(type) Elf_##type
>> ++# elif defined(__FreeBSD__) && __FreeBSD__ >= 7
>> ++# define ElfW __ElfN
>> ++# endif
>> + #endif
>> +
>> + #if defined(USE_PT_GNU_EH_FRAME)
>> +diff -r ff03fa61c6b3 gcc/configure
>> +--- a/gcc/configure Tue May 20 11:05:51 2014 -0400
>> ++++ b/gcc/configure Tue May 20 11:05:55 2014 -0400
>> +@@ -27300,6 +27300,9 @@
>> + else
>> + gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + # glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -27332,6 +27335,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + ac_fn_c_check_func "$LINENO" "__stack_chk_fail" "ac_cv_func___stack_chk_fail"
>> +@@ -27421,6 +27425,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> +
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +diff -r ff03fa61c6b3 gcc/configure.ac
>> +--- a/gcc/configure.ac Tue May 20 11:05:51 2014 -0400
>> ++++ b/gcc/configure.ac Tue May 20 11:05:55 2014 -0400
>> +@@ -5001,6 +5001,9 @@
>> + gcc_cv_libc_provides_ssp,
>> + [gcc_cv_libc_provides_ssp=no
>> + case "$target" in
>> ++ *-*-musl*)
>> ++ # All versions of musl provide stack protector
>> ++ gcc_cv_libc_provides_ssp=yes;;
>> + *-*-linux* | *-*-kfreebsd*-gnu | *-*-knetbsd*-gnu)
>> + # glibc 2.4 and later provides __stack_chk_fail and
>> + # either __stack_chk_guard, or TLS access to stack guard canary.
>> +@@ -5027,6 +5030,7 @@
>> + # <http://gcc.gnu.org/ml/gcc/2008-10/msg00130.html>) and for now
>> + # simply assert that glibc does provide this, which is true for all
>> + # realistically usable GNU/Hurd configurations.
>> ++ # All supported versions of musl provide it as well
>> + gcc_cv_libc_provides_ssp=yes;;
>> + *-*-darwin* | *-*-freebsd*)
>> + AC_CHECK_FUNC(__stack_chk_fail,[gcc_cv_libc_provides_ssp=yes],
>> +@@ -5093,6 +5097,9 @@
>> + gcc_cv_target_dl_iterate_phdr=no
>> + fi
>> + ;;
>> ++ *-linux-musl*)
>> ++ gcc_cv_target_dl_iterate_phdr=yes
>> ++ ;;
>> + esac
>> + GCC_TARGET_TEMPLATE([TARGET_DL_ITERATE_PHDR])
>> + if test x$gcc_cv_target_dl_iterate_phdr = xyes; then
>> +# HG changeset patch
>> +# Parent 26f591b9e77e3df3d0f772b840bd9c13ec24bd4c
>> +Get rid of ever-broken fixincludes on musl.
>> +
>> +diff -r 26f591b9e77e fixincludes/mkfixinc.sh
>> +--- a/fixincludes/mkfixinc.sh Tue May 20 11:05:55 2014 -0400
>> ++++ b/fixincludes/mkfixinc.sh Tue May 20 11:05:58 2014 -0400
>> +@@ -19,7 +19,8 @@
>> + powerpc-*-eabi* | \
>> + powerpc-*-rtems* | \
>> + powerpcle-*-eabisim* | \
>> +- powerpcle-*-eabi* )
>> ++ powerpcle-*-eabi* | \
>> ++ *-musl* )
>> + # IF there is no include fixing,
>> + # THEN create a no-op fixer and exit
>> + (echo "#! /bin/sh" ; echo "exit 0" ) > ${target}
>> +# HG changeset patch
>> +# Parent bc117c35705fcc39396c19af046101411f251161
>> +Support for i386-linux-musl and x86_64-linux-musl.
>> +
>> +diff -r bc117c35705f gcc/config/i386/linux.h
>> +--- a/gcc/config/i386/linux.h Tue May 20 11:05:58 2014 -0400
>> ++++ b/gcc/config/i386/linux.h Tue May 20 11:06:01 2014 -0400
>> +@@ -21,3 +21,4 @@
>> +
>> + #define GNU_USER_LINK_EMULATION "elf_i386"
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-i386.so.1"
>> +diff -r bc117c35705f gcc/config/i386/linux64.h
>> +--- a/gcc/config/i386/linux64.h Tue May 20 11:05:58 2014 -0400
>> ++++ b/gcc/config/i386/linux64.h Tue May 20 11:06:01 2014 -0400
>> +@@ -30,3 +30,7 @@
>> + #define GLIBC_DYNAMIC_LINKER32 "/lib/ld-linux.so.2"
>> + #define GLIBC_DYNAMIC_LINKER64 "/lib64/ld-linux-x86-64.so.2"
>> + #define GLIBC_DYNAMIC_LINKERX32 "/libx32/ld-linux-x32.so.2"
>> ++
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-i386.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-x86_64.so.1"
>> ++#define MUSL_DYNAMIC_LINKERX32 "/lib/ld-musl-x32.so.1"
>> +diff -r bc117c35705f libitm/config/linux/x86/tls.h
>> +--- a/libitm/config/linux/x86/tls.h Tue May 20 11:05:58 2014 -0400
>> ++++ b/libitm/config/linux/x86/tls.h Tue May 20 11:06:01 2014 -0400
>> +@@ -25,16 +25,19 @@
>> + #ifndef LIBITM_X86_TLS_H
>> + #define LIBITM_X86_TLS_H 1
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + /* Use slots in the TCB head rather than __thread lookups.
>> + GLIBC has reserved words 10 through 13 for TM. */
>> + #define HAVE_ARCH_GTM_THREAD 1
>> + #define HAVE_ARCH_GTM_THREAD_DISP 1
>> + #endif
>> ++#endif
>> +
>> + #include "config/generic/tls.h"
>> +
>> +-#if defined(__GLIBC_PREREQ) && __GLIBC_PREREQ(2, 10)
>> ++#if defined(__GLIBC_PREREQ)
>> ++#if __GLIBC_PREREQ(2, 10)
>> + namespace GTM HIDDEN {
>> +
>> + #ifdef __x86_64__
>> +@@ -101,5 +104,6 @@
>> +
>> + } // namespace GTM
>> + #endif /* >= GLIBC 2.10 */
>> ++#endif
>> +
>> + #endif // LIBITM_X86_TLS_H
>> +# HG changeset patch
>> +# Parent 933c4f064622eb96a0b2ab213abd0cddbd977d1a
>> +Support for arm-linux-musl.
>> +
>> +diff -r 933c4f064622 gcc/config/arm/linux-eabi.h
>> +--- a/gcc/config/arm/linux-eabi.h Tue May 20 11:06:01 2014 -0400
>> ++++ b/gcc/config/arm/linux-eabi.h Tue May 20 11:06:04 2014 -0400
>> +@@ -77,6 +77,23 @@
>> + %{mfloat-abi=soft*:" GLIBC_DYNAMIC_LINKER_SOFT_FLOAT "} \
>> + %{!mfloat-abi=*:" GLIBC_DYNAMIC_LINKER_DEFAULT "}"
>> +
>> ++/* For ARM musl currently supports four dynamic linkers:
>> ++ - ld-musl-arm.so.1 - for the EABI-derived soft-float ABI
>> ++ - ld-musl-armhf.so.1 - for the EABI-derived hard-float ABI
>> ++ - ld-musl-armeb.so.1 - for the EABI-derived soft-float ABI, EB
>> ++ - ld-musl-armebhf.so.1 - for the EABI-derived hard-float ABI, EB
>> ++ musl does not support the legacy OABI mode.
>> ++ All the dynamic linkers live in /lib.
>> ++ We default to soft-float, EL. */
>> ++#undef MUSL_DYNAMIC_LINKER
>> ++#if TARGET_BIG_ENDIAN_DEFAULT
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mlittle-endian:;:eb}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{mbig-endian:eb}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER \
>> ++ "/lib/ld-musl-arm" MUSL_DYNAMIC_LINKER_E "%{mfloat-abi=hard:hf}.so.1"
>> ++
>> + /* At this point, bpabi.h will have clobbered LINK_SPEC. We want to
>> + use the GNU/Linux version, not the generic BPABI version. */
>> + #undef LINK_SPEC
>> +diff -r 933c4f064622 libitm/config/arm/hwcap.cc
>> +--- a/libitm/config/arm/hwcap.cc Tue May 20 11:06:01 2014 -0400
>> ++++ b/libitm/config/arm/hwcap.cc Tue May 20 11:06:04 2014 -0400
>> +@@ -40,7 +40,11 @@
>> +
>> + #ifdef __linux__
>> + #include <unistd.h>
>> ++#ifdef __GLIBC__
>> + #include <sys/fcntl.h>
>> ++#else
>> ++#include <fcntl.h>
>> ++#endif
>> + #include <elf.h>
>> +
>> + static void __attribute__((constructor))
>> +# HG changeset patch
>> +# Parent 03fe896f3acaa911e935a8e999d15c7542ee73d1
>> +Support for mips-linux-musl.
>> +
>> +diff -r 03fe896f3aca gcc/config/mips/linux.h
>> +--- a/gcc/config/mips/linux.h Tue May 20 11:06:04 2014 -0400
>> ++++ b/gcc/config/mips/linux.h Tue May 20 11:06:08 2014 -0400
>> +@@ -23,3 +23,10 @@
>> + #undef UCLIBC_DYNAMIC_LINKER
>> + #define UCLIBC_DYNAMIC_LINKER \
>> + "%{mnan=2008:/lib/ld-uClibc-mipsn8.so.0;:/lib/ld-uClibc.so.0}"
>> ++
>> ++#if TARGET_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-mips" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +# HG changeset patch
>> +# Parent 6097333f2ab47a4ce37ccfb18b0f07a0cdcfec49
>> +Support for powerpc-linux-musl.
>> +
>> +diff -r 6097333f2ab4 gcc/config.gcc
>> +--- a/gcc/config.gcc Tue May 20 11:06:08 2014 -0400
>> ++++ b/gcc/config.gcc Tue May 20 11:06:11 2014 -0400
>> +@@ -2326,6 +2326,10 @@
>> + powerpc*-*-linux*paired*)
>> + tm_file="${tm_file} rs6000/750cl.h" ;;
>> + esac
>> ++ case ${target} in
>> ++ *-linux*-musl*)
>> ++ enable_secureplt=yes ;;
>> ++ esac
>> + if test x${enable_secureplt} = xyes; then
>> + tm_file="rs6000/secureplt.h ${tm_file}"
>> + fi
>> +diff -r 6097333f2ab4 gcc/config/rs6000/linux64.h
>> +--- a/gcc/config/rs6000/linux64.h Tue May 20 11:06:08 2014 -0400
>> ++++ b/gcc/config/rs6000/linux64.h Tue May 20 11:06:11 2014 -0400
>> +@@ -375,17 +375,21 @@
>> + #endif
>> + #define UCLIBC_DYNAMIC_LINKER32 "/lib/ld-uClibc.so.0"
>> + #define UCLIBC_DYNAMIC_LINKER64 "/lib/ld64-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER32 "/lib/ld-musl-powerpc.so.1"
>> ++#define MUSL_DYNAMIC_LINKER64 "/lib/ld-musl-powerpc64.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> + #elif DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER32 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER32, UCLIBC_DYNAMIC_LINKER32, MUSL_DYNAMIC_LINKER32)
>> + #define GNU_USER_DYNAMIC_LINKER64 \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER64, UCLIBC_DYNAMIC_LINKER64, MUSL_DYNAMIC_LINKER64)
>> +
>> + #undef DEFAULT_ASM_ENDIAN
>> + #if (TARGET_DEFAULT & MASK_LITTLE_ENDIAN)
>> +diff -r 6097333f2ab4 gcc/config/rs6000/secureplt.h
>> +--- a/gcc/config/rs6000/secureplt.h Tue May 20 11:06:08 2014 -0400
>> ++++ b/gcc/config/rs6000/secureplt.h Tue May 20 11:06:11 2014 -0400
>> +@@ -18,3 +18,4 @@
>> + <http://www.gnu.org/licenses/>. */
>> +
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC "-msecure-plt"
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC "--secure-plt"
>> +diff -r 6097333f2ab4 gcc/config/rs6000/sysv4.h
>> +--- a/gcc/config/rs6000/sysv4.h Tue May 20 11:06:08 2014 -0400
>> ++++ b/gcc/config/rs6000/sysv4.h Tue May 20 11:06:11 2014 -0400
>> +@@ -537,6 +537,9 @@
>> + #ifndef CC1_SECURE_PLT_DEFAULT_SPEC
>> + #define CC1_SECURE_PLT_DEFAULT_SPEC ""
>> + #endif
>> ++#ifndef LINK_SECURE_PLT_DEFAULT_SPEC
>> ++#define LINK_SECURE_PLT_DEFAULT_SPEC ""
>> ++#endif
>> +
>> + /* Pass -G xxx to the compiler. */
>> + #define CC1_SPEC "%{G*} %(cc1_cpu)" \
>> +@@ -585,7 +588,8 @@
>> +
>> + /* Override the default target of the linker. */
>> + #define LINK_TARGET_SPEC \
>> +- ENDIAN_SELECT("", " --oformat elf32-powerpcle", "")
>> ++ ENDIAN_SELECT("", " --oformat elf32-powerpcle", "") \
>> ++ "%{!mbss-plt: %{!msecure-plt: %(link_secure_plt_default)}}"
>> +
>> + /* Any specific OS flags. */
>> + #define LINK_OS_SPEC "\
>> +@@ -763,15 +767,18 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> + #define UCLIBC_DYNAMIC_LINKER "/lib/ld-uClibc.so.0"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-powerpc.so.1"
>> + #if DEFAULT_LIBC == LIBC_UCLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{mglibc:" G ";:" U "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{mmusl:" M ";:" U "}}"
>> ++#elif DEFAULT_LIBC == LIBC_MUSL
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{mglibc:" G ";:%{muclibc:" U ";:" M "}}"
>> + #elif !defined (DEFAULT_LIBC) || DEFAULT_LIBC == LIBC_GLIBC
>> +-#define CHOOSE_DYNAMIC_LINKER(G, U) "%{muclibc:" U ";:" G "}"
>> ++#define CHOOSE_DYNAMIC_LINKER(G, U, M) "%{muclibc:" U ";:%{mmusl:" M ";:" G "}}"
>> + #else
>> + #error "Unsupported DEFAULT_LIBC"
>> + #endif
>> + #define GNU_USER_DYNAMIC_LINKER \
>> +- CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER)
>> ++ CHOOSE_DYNAMIC_LINKER (GLIBC_DYNAMIC_LINKER, UCLIBC_DYNAMIC_LINKER, MUSL_DYNAMIC_LINKER)
>> +
>> + #define LINK_OS_LINUX_SPEC "-m elf32ppclinux %{!shared: %{!static: \
>> + %{rdynamic:-export-dynamic} \
>> +@@ -894,6 +901,7 @@
>> + { "link_os_openbsd", LINK_OS_OPENBSD_SPEC }, \
>> + { "link_os_default", LINK_OS_DEFAULT_SPEC }, \
>> + { "cc1_secure_plt_default", CC1_SECURE_PLT_DEFAULT_SPEC }, \
>> ++ { "link_secure_plt_default", LINK_SECURE_PLT_DEFAULT_SPEC }, \
>> + { "cpp_os_ads", CPP_OS_ADS_SPEC }, \
>> + { "cpp_os_yellowknife", CPP_OS_YELLOWKNIFE_SPEC }, \
>> + { "cpp_os_mvme", CPP_OS_MVME_SPEC }, \
>> +diff -r 813971b9f083 gcc/config/aarch64/aarch64-linux.h
>> +--- a/gcc/config/aarch64/aarch64-linux.h Tue May 20 11:06:11 2014 -0400
>> ++++ b/gcc/config/aarch64/aarch64-linux.h Tue May 20 11:06:14 2014 -0400
>> +@@ -23,6 +23,8 @@
>> +
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux-aarch64%{mbig-endian:_be}.so.1"
>> +
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-aarch64.so.1"
>> ++
>> + #define CPP_SPEC "%{pthread:-D_REENTRANT}"
>> +
>> + #define LINUX_TARGET_LINK_SPEC "%{h*} \
>> +# HG changeset patch
>> +# Parent 4a62a6813db995fe195d47ff73234d455975ac30
>> +Microblaze support (again).
>> +
>> +diff -r 4a62a6813db9 gcc/config/microblaze/linux.h
>> +--- a/gcc/config/microblaze/linux.h Tue May 20 11:06:14 2014 -0400
>> ++++ b/gcc/config/microblaze/linux.h Tue May 20 11:06:17 2014 -0400
>> +@@ -25,7 +25,22 @@
>> + #undef TLS_NEEDS_GOT
>> + #define TLS_NEEDS_GOT 1
>> +
>> +-#define DYNAMIC_LINKER "/lib/ld.so.1"
>> ++#if TARGET_BIG_ENDIAN_DEFAULT == 0 /* LE */
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EB:;:el}"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E "%{EL:el}"
>> ++#endif
>> ++
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-microblaze" MUSL_DYNAMIC_LINKER_E ".so.1"
>> ++#define GLIBC_DYNAMIC_LINKER "/lib/ld.so.1"
>> ++
>> ++#if DEFAULT_LIBC == LIBC_MUSL
>> ++#define DYNAMIC_LINKER MUSL_DYNAMIC_LINKER
>> ++#else
>> ++#define DYNAMIC_LINKER GLIBC_DYNAMIC_LINKER
>> ++#endif
>> ++
>> ++
>> + #undef SUBTARGET_EXTRA_SPECS
>> + #define SUBTARGET_EXTRA_SPECS \
>> + { "dynamic_linker", DYNAMIC_LINKER }
>> +From 478ee0c03a08e2ef9371fd88d516738936943e78 Mon Sep 17 00:00:00 2001
>> +From: David Holsgrove <david.holsgrove@xilinx.com>
>> +Date: Fri, 28 Sep 2012 16:32:03 +1000
>> +Subject: [PATCH 06/11] [Patch, microblaze]: Add SIZE_TYPE and PTRDIFF_TYPE to
>> + microblaze.h
>> +
>> +Fixes warnings like;
>> +
>> +warning: format '%zX' expects argument of type 'size_t',
>> +but argument 3 has type 'unsigned int' [-Wformat]
>> +
>> +Changelog
>> +
>> +2013-03-18 David Holsgrove <david.holsgrove@xilinx.com>
>> +
>> + * gcc/config/microblaze/microblaze.h: Define SIZE_TYPE
>> + and PTRDIFF_TYPE.
>> +
>> +Signed-off-by: David Holsgrove <david.holsgrove@xilinx.com>
>> +---
>> + gcc/config/microblaze/microblaze.h | 6 ++++++
>> + 1 file changed, 6 insertions(+)
>> +
>> +diff -r 20d1c995f5de gcc/config/microblaze/microblaze.h
>> +--- a/gcc/config/microblaze/microblaze.h Tue May 20 11:06:17 2014 -0400
>> ++++ b/gcc/config/microblaze/microblaze.h Tue May 20 11:06:20 2014 -0400
>> +@@ -218,6 +218,12 @@
>> + #undef PTRDIFF_TYPE
>> + #define PTRDIFF_TYPE "int"
>> +
>> ++#undef SIZE_TYPE
>> ++#define SIZE_TYPE "unsigned int"
>> ++
>> ++#undef PTRDIFF_TYPE
>> ++#define PTRDIFF_TYPE "int"
>> ++
>> + #define CONSTANT_ALIGNMENT(EXP, ALIGN) \
>> + ((TREE_CODE (EXP) == STRING_CST || TREE_CODE (EXP) == CONSTRUCTOR) \
>> + && (ALIGN) < BITS_PER_WORD \
>> +diff -r 2f999fc929da gcc/config/sh/linux.h
>> +--- a/gcc/config/sh/linux.h Fri Sep 28 16:32:03 2012 +1000
>> ++++ b/gcc/config/sh/linux.h Tue May 20 11:06:23 2014 -0400
>> +@@ -43,7 +43,14 @@
>> +
>> + #define TARGET_ASM_FILE_END file_end_indicate_exec_stack
>> +
>> ++#if TARGET_BIG_ENDIAN_DEFAULT /* BE */
>> ++#define MUSL_DYNAMIC_LINKER_E "eb"
>> ++#else
>> ++#define MUSL_DYNAMIC_LINKER_E
>> ++#endif
>> ++
>> + #define GLIBC_DYNAMIC_LINKER "/lib/ld-linux.so.2"
>> ++#define MUSL_DYNAMIC_LINKER "/lib/ld-musl-sh" MUSL_DYNAMIC_LINKER_E ".so.1"
>> +
>> + #undef SUBTARGET_LINK_EMUL_SUFFIX
>> + #define SUBTARGET_LINK_EMUL_SUFFIX "_linux"
>> diff --git a/patches/musl/1.0.3/0001-fix_linker_regression.patch b/patches/musl/1.0.3/0001-fix_linker_regression.patch
>> new file mode 100644
>> index 0000000..801cb00
>> --- /dev/null
>> +++ b/patches/musl/1.0.3/0001-fix_linker_regression.patch
>> @@ -0,0 +1,64 @@
>> +From 9a4ad02214a859e93d2c980e4535378a6a74e3a6 Mon Sep 17 00:00:00 2001
>> +From: Rich Felker <dalias@aerifal.cx>
>> +Date: Mon, 30 Jun 2014 01:52:54 +0000
>> +Subject: fix regression in dynamic linker error reporting
>> +
>> +due to a mistake when refactoring the error printing for the dynamic
>> +linker (commit 7c73cacd09a51a87484db5689864743e4984a84d), all messages
>> +were suppressed and replaced by blank lines.
>> +---
>> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
>> +index bc4f2f6..a08300d 100644
>> +--- a/src/ldso/dynlink.c
>> ++++ b/src/ldso/dynlink.c
>> +@@ -290,8 +290,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + if (!astype) continue;
>> + type = remap_rel(astype);
>> + if (!type) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: unsupported relocation type %d",
>> ++ error("Error relocating %s: unsupported relocation type %d",
>> + dso->name, astype);
>> + continue;
>> + }
>> +@@ -304,8 +303,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + def = find_sym(ctx, name, type==REL_PLT);
>> + if (!def.sym && (sym->st_shndx != SHN_UNDEF
>> + || sym->st_info>>4 != STB_WEAK)) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: %s: symbol not found",
>> ++ error("Error relocating %s: %s: symbol not found",
>> + dso->name, name);
>> + continue;
>> + }
>> +@@ -366,7 +364,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + if (stride<3) addend = reloc_addr[1];
>> + if (runtime && def.dso->tls_id >= static_tls_cnt) {
>> + struct td_index *new = malloc(sizeof *new);
>> +- if (!new) error(errbuf, sizeof errbuf,
>> ++ if (!new) error(
>> + "Error relocating %s: cannot allocate TLSDESC for %s",
>> + dso->name, sym ? name : "(local)" );
>> + new->next = dso->td_index;
>> +@@ -839,8 +837,7 @@ static void load_deps(struct dso *p)
>> + if (p->dynv[i] != DT_NEEDED) continue;
>> + dep = load_library(p->strings + p->dynv[i+1], p);
>> + if (!dep) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error loading shared library %s: %m (needed by %s)",
>> ++ error("Error loading shared library %s: %m (needed by %s)",
>> + p->strings + p->dynv[i+1], p->name);
>> + continue;
>> + }
>> +@@ -890,8 +887,7 @@ static void reloc_all(struct dso *p)
>> +
>> + if (p->relro_start != p->relro_end &&
>> + mprotect(p->base+p->relro_start, p->relro_end-p->relro_start, PROT_READ) < 0) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: RELRO protection failed: %m",
>> ++ error("Error relocating %s: RELRO protection failed: %m",
>> + p->name);
>> + }
>> +
>> +--
>> +cgit v0.9.0.3-65-g4555
>> diff --git a/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch b/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
>> new file mode 100644
>> index 0000000..4891b4f
>> --- /dev/null
>> +++ b/patches/musl/1.0.3/0002-fix_mips_linker_regression.patch
>> @@ -0,0 +1,88 @@
>> +From 2d8cc92a7cb4a3256ed07d86843388ffd8a882b1 Mon Sep 17 00:00:00 2001
>> +From: Rich Felker <dalias@aerifal.cx>
>> +Date: Mon, 30 Jun 2014 05:18:14 +0000
>> +Subject: fix regression in mips dynamic linker
>> +
>> +this issue caused the address of functions in shared libraries to
>> +resolve to their PLT thunks in the main program rather than their
>> +correct addresses. it was observed causing crashes, though the
>> +mechanism of the crash was not thoroughly investigated. since the
>> +issue is very subtle, it calls for some explanation:
>> +
>> +on all well-behaved archs, GOT entries that belong to the PLT use a
>> +special relocation type, typically called JMP_SLOT, so that the
>> +dynamic linker can avoid having the jump destinations for the PLT
>> +resolve to PLT thunks themselves (they also provide a definition for
>> +the symbol, which must be used whenever the address of the function is
>> +taken so that all DSOs see the same address).
>> +
>> +however, the traditional mips PIC ABI lacked such a JMP_SLOT
>> +relocation type, presumably because, due to the way PIC works, the
>> +address of the PLT thunk was never needed and could always be ignored.
>> +
>> +prior to commit adf94c19666e687a728bbf398f9a88ea4ea19996, the mips
>> +version of reloc.h contained a hack that caused all symbol lookups to
>> +be treated like JMP_SLOT, inhibiting undefined symbols from ever being
>> +used to resolve symbolic relocations. this hack goes all the way back
>> +to commit babf820180368f00742ec65b2050a82380d7c542, when the mips
>> +dynamic linker was first made usable.
>> +
>> +during the recent refactoring to eliminate arch-specific relocation
>> +processing (commit adf94c19666e687a728bbf398f9a88ea4ea19996), this
>> +hack was overlooked and no equivalent functionality was provided in
>> +the new code.
>> +
>> +fixing the problem is not as simple as adding back an equivalent hack,
>> +since there is now also a "non-PIC ABI" that can be used for the main
>> +executable, which actually does use a PLT. the closest thing to
>> +official documentation I could find for this ABI is nonpic.txt,
>> +attached to Message-ID: 20080701202236.GA1534@caradoc.them.org, which
>> +can be found in the gcc mailing list archives and elsewhere. per this
>> +document, undefined symbols corresponding to PLT thunks have the
>> +STO_MIPS_PLT bit set in the symbol's st_other field. thus, I have
>> +added an arch-specific rule for mips, applied at the find_sym level
>> +rather than the relocation level, to reject undefined symbols with the
>> +STO_MIPS_PLT bit clear.
>> +
>> +the previous hack of treating all mips relocations as JMP_SLOT-like,
>> +rather than rejecting the unwanted symbols in find_sym, probably also
>> +caused dlsym to wrongly return PLT thunks in place of the correct
>> +address of a function under at least some conditions. this should now
>> +be fixed, at least for global-scope symbol lookups.
>> +---
>> +diff --git a/arch/mips/reloc.h b/arch/mips/reloc.h
>> +index 91fa097..4b81d32 100644
>> +--- a/arch/mips/reloc.h
>> ++++ b/arch/mips/reloc.h
>> +@@ -86,3 +86,4 @@ static void do_arch_relocs(struct dso *this, struct dso *head)
>> +
>> + #define NEED_ARCH_RELOCS 1
>> + #define DYNAMIC_IS_RO 1
>> ++#define ARCH_SYM_REJECT_UND(s) (!((s)->st_other & STO_MIPS_PLT))
>> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
>> +index a08300d..55124ff 100644
>> +--- a/src/ldso/dynlink.c
>> ++++ b/src/ldso/dynlink.c
>> +@@ -233,6 +233,10 @@ static Sym *gnu_lookup(const char *s, uint32_t h1, struct dso *dso)
>> + #define OK_TYPES (1<<STT_NOTYPE | 1<<STT_OBJECT | 1<<STT_FUNC | 1<<STT_COMMON | 1<<STT_TLS)
>> + #define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK | 1<<STB_GNU_UNIQUE)
>> +
>> ++#ifndef ARCH_SYM_REJECT_UND
>> ++#define ARCH_SYM_REJECT_UND(s) 0
>> ++#endif
>> ++
>> + static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
>> + {
>> + uint32_t h = 0, gh = 0;
>> +@@ -249,7 +253,8 @@ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
>> + }
>> + if (!sym) continue;
>> + if (!sym->st_shndx)
>> +- if (need_def || (sym->st_info&0xf) == STT_TLS)
>> ++ if (need_def || (sym->st_info&0xf) == STT_TLS
>> ++ || ARCH_SYM_REJECT_UND(sym))
>> + continue;
>> + if (!sym->st_value)
>> + if ((sym->st_info&0xf) != STT_TLS)
>> +--
>> +cgit v0.9.0.3-65-g4555
>> diff --git a/patches/musl/1.1.3/0001-fix_linker_regression.patch b/patches/musl/1.1.3/0001-fix_linker_regression.patch
>> new file mode 100644
>> index 0000000..801cb00
>> --- /dev/null
>> +++ b/patches/musl/1.1.3/0001-fix_linker_regression.patch
>> @@ -0,0 +1,64 @@
>> +From 9a4ad02214a859e93d2c980e4535378a6a74e3a6 Mon Sep 17 00:00:00 2001
>> +From: Rich Felker <dalias@aerifal.cx>
>> +Date: Mon, 30 Jun 2014 01:52:54 +0000
>> +Subject: fix regression in dynamic linker error reporting
>> +
>> +due to a mistake when refactoring the error printing for the dynamic
>> +linker (commit 7c73cacd09a51a87484db5689864743e4984a84d), all messages
>> +were suppressed and replaced by blank lines.
>> +---
>> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
>> +index bc4f2f6..a08300d 100644
>> +--- a/src/ldso/dynlink.c
>> ++++ b/src/ldso/dynlink.c
>> +@@ -290,8 +290,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + if (!astype) continue;
>> + type = remap_rel(astype);
>> + if (!type) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: unsupported relocation type %d",
>> ++ error("Error relocating %s: unsupported relocation type %d",
>> + dso->name, astype);
>> + continue;
>> + }
>> +@@ -304,8 +303,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + def = find_sym(ctx, name, type==REL_PLT);
>> + if (!def.sym && (sym->st_shndx != SHN_UNDEF
>> + || sym->st_info>>4 != STB_WEAK)) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: %s: symbol not found",
>> ++ error("Error relocating %s: %s: symbol not found",
>> + dso->name, name);
>> + continue;
>> + }
>> +@@ -366,7 +364,7 @@ static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stri
>> + if (stride<3) addend = reloc_addr[1];
>> + if (runtime && def.dso->tls_id >= static_tls_cnt) {
>> + struct td_index *new = malloc(sizeof *new);
>> +- if (!new) error(errbuf, sizeof errbuf,
>> ++ if (!new) error(
>> + "Error relocating %s: cannot allocate TLSDESC for %s",
>> + dso->name, sym ? name : "(local)" );
>> + new->next = dso->td_index;
>> +@@ -839,8 +837,7 @@ static void load_deps(struct dso *p)
>> + if (p->dynv[i] != DT_NEEDED) continue;
>> + dep = load_library(p->strings + p->dynv[i+1], p);
>> + if (!dep) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error loading shared library %s: %m (needed by %s)",
>> ++ error("Error loading shared library %s: %m (needed by %s)",
>> + p->strings + p->dynv[i+1], p->name);
>> + continue;
>> + }
>> +@@ -890,8 +887,7 @@ static void reloc_all(struct dso *p)
>> +
>> + if (p->relro_start != p->relro_end &&
>> + mprotect(p->base+p->relro_start, p->relro_end-p->relro_start, PROT_READ) < 0) {
>> +- error(errbuf, sizeof errbuf,
>> +- "Error relocating %s: RELRO protection failed: %m",
>> ++ error("Error relocating %s: RELRO protection failed: %m",
>> + p->name);
>> + }
>> +
>> +--
>> +cgit v0.9.0.3-65-g4555
>> diff --git a/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch b/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
>> new file mode 100644
>> index 0000000..4891b4f
>> --- /dev/null
>> +++ b/patches/musl/1.1.3/0002-fix_mips_linker_regression.patch
>> @@ -0,0 +1,88 @@
>> +From 2d8cc92a7cb4a3256ed07d86843388ffd8a882b1 Mon Sep 17 00:00:00 2001
>> +From: Rich Felker <dalias@aerifal.cx>
>> +Date: Mon, 30 Jun 2014 05:18:14 +0000
>> +Subject: fix regression in mips dynamic linker
>> +
>> +this issue caused the address of functions in shared libraries to
>> +resolve to their PLT thunks in the main program rather than their
>> +correct addresses. it was observed causing crashes, though the
>> +mechanism of the crash was not thoroughly investigated. since the
>> +issue is very subtle, it calls for some explanation:
>> +
>> +on all well-behaved archs, GOT entries that belong to the PLT use a
>> +special relocation type, typically called JMP_SLOT, so that the
>> +dynamic linker can avoid having the jump destinations for the PLT
>> +resolve to PLT thunks themselves (they also provide a definition for
>> +the symbol, which must be used whenever the address of the function is
>> +taken so that all DSOs see the same address).
>> +
>> +however, the traditional mips PIC ABI lacked such a JMP_SLOT
>> +relocation type, presumably because, due to the way PIC works, the
>> +address of the PLT thunk was never needed and could always be ignored.
>> +
>> +prior to commit adf94c19666e687a728bbf398f9a88ea4ea19996, the mips
>> +version of reloc.h contained a hack that caused all symbol lookups to
>> +be treated like JMP_SLOT, inhibiting undefined symbols from ever being
>> +used to resolve symbolic relocations. this hack goes all the way back
>> +to commit babf820180368f00742ec65b2050a82380d7c542, when the mips
>> +dynamic linker was first made usable.
>> +
>> +during the recent refactoring to eliminate arch-specific relocation
>> +processing (commit adf94c19666e687a728bbf398f9a88ea4ea19996), this
>> +hack was overlooked and no equivalent functionality was provided in
>> +the new code.
>> +
>> +fixing the problem is not as simple as adding back an equivalent hack,
>> +since there is now also a "non-PIC ABI" that can be used for the main
>> +executable, which actually does use a PLT. the closest thing to
>> +official documentation I could find for this ABI is nonpic.txt,
>> +attached to Message-ID: 20080701202236.GA1534@caradoc.them.org, which
>> +can be found in the gcc mailing list archives and elsewhere. per this
>> +document, undefined symbols corresponding to PLT thunks have the
>> +STO_MIPS_PLT bit set in the symbol's st_other field. thus, I have
>> +added an arch-specific rule for mips, applied at the find_sym level
>> +rather than the relocation level, to reject undefined symbols with the
>> +STO_MIPS_PLT bit clear.
>> +
>> +the previous hack of treating all mips relocations as JMP_SLOT-like,
>> +rather than rejecting the unwanted symbols in find_sym, probably also
>> +caused dlsym to wrongly return PLT thunks in place of the correct
>> +address of a function under at least some conditions. this should now
>> +be fixed, at least for global-scope symbol lookups.
>> +---
>> +diff --git a/arch/mips/reloc.h b/arch/mips/reloc.h
>> +index 91fa097..4b81d32 100644
>> +--- a/arch/mips/reloc.h
>> ++++ b/arch/mips/reloc.h
>> +@@ -86,3 +86,4 @@ static void do_arch_relocs(struct dso *this, struct dso *head)
>> +
>> + #define NEED_ARCH_RELOCS 1
>> + #define DYNAMIC_IS_RO 1
>> ++#define ARCH_SYM_REJECT_UND(s) (!((s)->st_other & STO_MIPS_PLT))
>> +diff --git a/src/ldso/dynlink.c b/src/ldso/dynlink.c
>> +index a08300d..55124ff 100644
>> +--- a/src/ldso/dynlink.c
>> ++++ b/src/ldso/dynlink.c
>> +@@ -233,6 +233,10 @@ static Sym *gnu_lookup(const char *s, uint32_t h1, struct dso *dso)
>> + #define OK_TYPES (1<<STT_NOTYPE | 1<<STT_OBJECT | 1<<STT_FUNC | 1<<STT_COMMON | 1<<STT_TLS)
>> + #define OK_BINDS (1<<STB_GLOBAL | 1<<STB_WEAK | 1<<STB_GNU_UNIQUE)
>> +
>> ++#ifndef ARCH_SYM_REJECT_UND
>> ++#define ARCH_SYM_REJECT_UND(s) 0
>> ++#endif
>> ++
>> + static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
>> + {
>> + uint32_t h = 0, gh = 0;
>> +@@ -249,7 +253,8 @@ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
>> + }
>> + if (!sym) continue;
>> + if (!sym->st_shndx)
>> +- if (need_def || (sym->st_info&0xf) == STT_TLS)
>> ++ if (need_def || (sym->st_info&0xf) == STT_TLS
>> ++ || ARCH_SYM_REJECT_UND(sym))
>> + continue;
>> + if (!sym->st_value)
>> + if ((sym->st_info&0xf) != STT_TLS)
>> +--
>> +cgit v0.9.0.3-65-g4555
>> diff --git a/scripts/build/arch/arm.sh b/scripts/build/arch/arm.sh
>> index 430bdde..5f6ce2f 100644
>> --- a/scripts/build/arch/arm.sh
>> +++ b/scripts/build/arch/arm.sh
>> @@ -17,6 +17,7 @@ CT_DoArchTupleValues() {
>> case "${CT_LIBC},${CT_ARCH_ARM_EABI}" in
>> *glibc,y) CT_TARGET_SYS=gnueabi;;
>> uClibc,y) CT_TARGET_SYS=uclibcgnueabi;;
>> + musl,y) CT_TARGET_SYS=musleabi;;
>> *,y) CT_TARGET_SYS=eabi;;
>> esac
>>
>> diff --git a/scripts/build/libc/musl.sh b/scripts/build/libc/musl.sh
>> new file mode 100644
>> index 0000000..536267c
>> --- /dev/null
>> +++ b/scripts/build/libc/musl.sh
>> @@ -0,0 +1,128 @@
>> +# This file adds functions to build the musl C library
>> +# Copyright 2013 Timo Teräs
>> +# Licensed under the GPL v2. See COPYING in the root of this package
>> +
>> +do_libc_get() {
>> + local libc_src
>> +
>> + libc_src="http://www.musl-libc.org/releases"
>> +
>> + if [ "${CT_LIBC_MUSL_CUSTOM}" = "y" ]; then
>> + CT_GetCustom "musl" "${CT_LIBC_VERSION}" \
>> + "${CT_LIBC_MUSL_CUSTOM_LOCATION}"
>> + else # ! custom location
>> + CT_GetFile "musl-${CT_LIBC_VERSION}" "${libc_src}"
>> + fi # ! custom location
>> +}
>> +
>> +do_libc_extract() {
>> + # If using custom directory location, nothing to do.
>> + if [ "${CT_LIBC_MUSL_CUSTOM}" = "y" ]; then
>> + # Abort if the custom directory is not found.
>> + if ! [ -d "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" ]; then
>> + CT_Abort "Directory not found: ${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}"
>> + fi
>> +
>> + return 0
>> + fi
>> +
>> + CT_Extract "musl-${CT_LIBC_VERSION}"
>> + CT_Patch "musl" "${CT_LIBC_VERSION}"
>> +}
>> +
>> +do_libc_check_config() {
>> + :
>> +}
>> +
>> +do_libc_configure() {
>> + CT_DoLog EXTRA "Configuring C library"
>> + local -a extra_cflags
>> +
>> + # From buildroot:
>> + # gcc constant folding bug with weak aliases workaround
>> + # See http://www.openwall.com/lists/musl/2014/05/15/1
>> + if [ "${CT_CC_GCC_4_9_or_later}" = "y" ]; then
>> + extra_cflags+=("-fno-toplevel-reorder")
>> + fi
>> +
>> + # NOTE: musl handles the build/host/target a little bit differently
>> + # then one would expect:
>> + # build : not used
>> + # host : the machine building musl
>> + # target : the machine musl runs on
>> + CT_DoExecLog CFG \
>> + CFLAGS="${extra_cflags[@]}" \
>> + CROSS_COMPILE="${CT_TARGET}-" \
>> + ./configure \
>> + --host="${CT_TARGET}" \
>> + --target="${CT_TARGET}" \
>> + --prefix="/usr" \
>> + --disable-gcc-wrapper
>> +}
>> +
>> +do_get_arch() {
>> + local ARCH=""
>> +
>> + # musl can be installed without gcc if arch is known
>> + case "${CT_TARGET}" in
>> + arm*) ARCH=arm ;;
>> + i?86*) ARCH=i386 ;;
>> + x86_64*) ARCH=x86_64 ;;
>> + mips-*|mipsel-*) ARCH=mips ;;
>> + microblaze-*) ARCH=microblaze ;;
>> + powerpc-*) ARCH=powerpc ;;
>> + sh-*|sh[34]-*) ARCH=sh ;;
>> + x32-*) ARCH=x32 ;;
>> + *) ARCH="" ;;
>> + esac
>> +
>> + echo "${ARCH}"
>> +}
>> +
>> +do_libc_start_files() {
>> + #local ARCH="$(do_get_arch)"
>> + CT_DoStep INFO "Installing C library headers"
>> +
>> + # Simply copy files until musl has the ability to build out-of-tree
>> + CT_DoLog EXTRA "Copying sources to build directory"
>> + CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" \
>> + "${CT_BUILD_DIR}/build-libc-headers"
>> + cd "${CT_BUILD_DIR}/build-libc-headers"
>> +
>> + do_libc_configure
>> +
>> + CT_DoLog EXTRA "Installing headers"
>> + #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" install-headers
>> + CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install-headers
>> +
>> + #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" \
>> + CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" \
>> + crt/crt1.o crt/crti.o crt/crtn.o
>> + CT_DoExecLog ALL cp -av crt/crt*.o "${CT_SYSROOT_DIR}/usr/lib"
>> + CT_DoExecLog ALL ${CT_TARGET}-gcc -nostdlib \
>> + -nostartfiles -shared -x c /dev/null -o "${CT_SYSROOT_DIR}/usr/lib/libc.so"
>> + CT_EndStep
>> +}
>> +
>> +do_libc() {
>> + #local ARCH="$(do_get_arch)"
>> + CT_DoStep INFO "Installing C library"
>> +
>> + # Simply copy files until musl has the ability to build out-of-tree
>> + CT_DoLog EXTRA "Copying sources to build directory"
>> + CT_DoExecLog ALL cp -av "${CT_SRC_DIR}/musl-${CT_LIBC_VERSION}" \
>> + "${CT_BUILD_DIR}/build-libc"
>> + cd "${CT_BUILD_DIR}/build-libc"
>> +
>> + do_libc_configure
>> +
>> + CT_DoLog EXTRA "Building C library"
>> + #CT_DoExecLog ALL make ARCH="${ARCH}" ${JOBSFLAGS}
>> + CT_DoExecLog ALL make ${JOBSFLAGS}
>> +
>> + CT_DoLog EXTRA "Installing C library"
>> + #CT_DoExecLog ALL make ARCH="${ARCH}" DESTDIR="${CT_SYSROOT_DIR}" install
>> + CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install
>> +
>> + CT_EndStep
>> +}
>> diff --git a/scripts/functions b/scripts/functions
>> index 2e4d4fa..eae3b95 100644
>> --- a/scripts/functions
>> +++ b/scripts/functions
>> @@ -1182,6 +1182,7 @@ CT_DoBuildTargetTuple() {
>> case "${CT_LIBC}" in
>> *glibc) CT_TARGET_SYS=gnu;;
>> uClibc) CT_TARGET_SYS=uclibc;;
>> + musl) CT_TARGET_SYS=musl;;
>> *) CT_TARGET_SYS=elf;;
>> esac
>>
>> --
>> 2.0.1
>>
>
> --
> .-----------------.--------------------.------------------.--------------------.
> | Yann E. MORIN | Real-Time Embedded | /"\ ASCII RIBBON | Erics' conspiracy: |
> | +33 662 376 056 | Software Designer | \ / CAMPAIGN | ___ |
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> | http://ymorin.is-a-geek.org/ | _/*\_ | / \ HTML MAIL | v conspiracy. |
> '------------------------------^-------^------------------^--------------------'
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2014-08-01 2:02 [PATCH 0/4] Update how threads are configured, and add musl-libc Bryan Hundven
2014-08-01 2:02 ` [PATCH 3/4] libc/mingw: threads are the native ones Bryan Hundven
2014-08-01 2:02 ` [PATCH 2/4] libc: libces are responsible for naming their threads implementation Bryan Hundven
2014-08-01 2:02 ` [PATCH 4/4] [libc/musl] Add musl-libc support Bryan Hundven
2014-08-08 21:21 ` Yann E. MORIN
2014-08-08 21:28 ` Bryan Hundven
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