[PATCH 1 of 4] configure: disable static linking on Darwin

[PATCH 1 of 4] configure: disable static linking on Darwin

[Yann E. MORIN]

# HG changeset patch
# User "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
# Date 1309201420 -7200
# Node ID 28ea242a652e197abf84c549ee275059a425d72a
# Parent  364b06df9e3a11637489a8f3f6a0010a555a5597
configure: disable static linking on Darwin

Static liunking is not supported on Darwin, so hide the corresponding
options when the build machine is Darwin.

Reported-by: Andrea Franceschini <therealmorpheu5@gmail.com>
Reported-by: Bryan Hundven <bryanhundven@gmail.com>
Reported-by: "Titus von Boxberg" <titus@v9g.de>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

diff --git a/config/cc/gcc.in.2 b/config/cc/gcc.in.2
--- a/config/cc/gcc.in.2
+++ b/config/cc/gcc.in.2
@@ -44,6 +44,7 @@
     bool
     prompt "Link libstdc++ statically into the gcc binary"
     default y
+    depends on CONFIGURE_static_link_ok
     depends on CONFIGURE_has_static_libstdcxx
     depends on CC_GCC_4_4_or_later
     help
diff --git a/config/debug/gdb.in.cross b/config/debug/gdb.in.cross
--- a/config/debug/gdb.in.cross
+++ b/config/debug/gdb.in.cross
@@ -24,6 +24,7 @@
 config GDB_CROSS_STATIC
     bool
     prompt "Build a static cross gdb"
+    depends on CONFIGURE_static_link_ok
     depends on CONFIGURE_has_static_expat
     help
       A static cross gdb can be usefull if you debug on a machine that is
diff --git a/config/toolchain.in b/config/toolchain.in
--- a/config/toolchain.in
+++ b/config/toolchain.in
@@ -51,6 +51,7 @@
 config STATIC_TOOLCHAIN_POSSIBLE
     bool
     default y
+    depends on CONFIGURE_static_link_ok
     depends on CONFIGURE_has_static_libstdcxx
     # Add new deps here! :-)
 
diff --git a/configure b/configure
--- a/configure
+++ b/configure
@@ -435,6 +435,29 @@
 has_or_abort prog=readelf var=readelf
 has_or_abort prog=patch var=patch
 
+# System specific checks
+printf "Checking if static linking is possible... "
+static_link_ok=""
+case $(uname -s) in
+    Darwin) ;;
+    *)  if gcc -xc - -static -o - >/dev/null 2>&1<<-_EOF_
+				int main() { return 0; }
+			_EOF_
+        then
+            static_link_ok="y"
+        fi
+        ;;
+esac
+if [ "${static_link_ok}" = "y" ]; then
+    printf "yes\n"
+else
+    printf "no\n"
+    printf " * An optional dependency is missing, some features will be disabled\n"
+    printf " * It wil not be possible to link binaries statically\n"
+fi
+add_to_kconfig_list static_link_ok
+
+# Library checks
 ncurses_hdrs="ncurses/ncurses.h ncurses/curses.h ncurses.h curses.h"
 ncurses_libs="$( for l in ncursesw ncurses curses; do   \
                      for x in so a dylib; do            \

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[PATCH 2 of 4] cc/gcc: add build-id option

[Yann E. MORIN]

# HG changeset patch
# User "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
# Date 1309175535 -7200
# Node ID bf2d0ee90afdc4878d5e398470833dc7caeb3bd6
# Parent  28ea242a652e197abf84c549ee275059a425d72a
cc/gcc: add build-id option

Add an option to configure gcc with --enable-linker-build-id.

Reported-by: Bryan Hundven <bryanhundven@gmail.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

diff --git a/config/cc/gcc.in b/config/cc/gcc.in
--- a/config/cc/gcc.in
+++ b/config/cc/gcc.in
@@ -220,6 +220,7 @@
     select CC_GCC_HAS_GRAPHITE
     select CC_GCC_HAS_LTO
     select CC_GCC_HAS_PKGVERSION_BUGURL
+    select CC_GCC_HAS_BUILD_ID
 
 config CC_GCC_4_5_or_later
     bool
@@ -233,6 +234,7 @@
     select CC_GCC_HAS_GRAPHITE
     select CC_GCC_HAS_LTO
     select CC_GCC_HAS_PKGVERSION_BUGURL
+    select CC_GCC_HAS_BUILD_ID
 
 config CC_GCC_4_6_or_later
     bool
@@ -255,6 +257,9 @@
 config CC_GCC_HAS_PKGVERSION_BUGURL
     bool
 
+config CC_GCC_HAS_BUILD_ID
+    bool
+
 # Only enable gcc's support for plugins if binutils has it as well
 # They are usefull only when doing LTO, but it does no harm enabling
 # them even without LTO.
diff --git a/config/cc/gcc.in.2 b/config/cc/gcc.in.2
--- a/config/cc/gcc.in.2
+++ b/config/cc/gcc.in.2
@@ -199,3 +199,16 @@
                  glibc >= 2.4, 64-bit otherwise)
       
       If in doubt, keep the default, ie. 'M'.
+
+config CC_GCC_BUILD_ID
+    bool
+    prompt "Enable build-id"
+    depends on CC_GCC_HAS_BUILD_ID
+    help
+      Tells GCC to pass --build-id option to the linker for all final
+      links (links performed without the -r or --relocatable option),
+      if the linker supports it. If you say 'y' here, but your linker
+      does not support --build-id option, a warning is issued and this
+      option is ignored.
+      
+      The default is off.
diff --git a/scripts/build/cc/gcc.sh b/scripts/build/cc/gcc.sh
--- a/scripts/build/cc/gcc.sh
+++ b/scripts/build/cc/gcc.sh
@@ -258,6 +258,10 @@
         "") extra_config+=("--without-long-double-128");;
     esac
 
+    if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
+        extra_config+=( --enable-linker-build-id )
+    fi
+
     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
 
     # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
@@ -527,6 +531,10 @@
         "") extra_config+=("--without-long-double-128");;
     esac
 
+    if [ "${CT_CC_GCC_BUILD_ID}" = "y" ]; then
+        extra_config+=( --enable-linker-build-id )
+    fi
+
     if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
         extra_config+=( --enable-plugin )
     fi

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[PATCH 3 of 4] cc/gcc: add option for linker hash style

[Yann E. MORIN]

# HG changeset patch
# User "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
# Date 1309180500 -7200
# Node ID 9d62710aa7ce46782da2cc122477b5350ca7c82b
# Parent  bf2d0ee90afdc4878d5e398470833dc7caeb3bd6
cc/gcc: add option for linker hash style

Add an option to specify the hash type that gcc will ask the linker to use.
It is a provision for the upcoming 4.7, as no version currently supports it.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

diff --git a/config/cc/gcc.in b/config/cc/gcc.in
--- a/config/cc/gcc.in
+++ b/config/cc/gcc.in
@@ -260,6 +260,11 @@
 config CC_GCC_HAS_BUILD_ID
     bool
 
+# For the upcoming 4.7 ?
+# None have linker-hash-style support for now...
+config CC_GCC_HAS_LNK_HASH_STYLE
+    bool
+
 # Only enable gcc's support for plugins if binutils has it as well
 # They are usefull only when doing LTO, but it does no harm enabling
 # them even without LTO.
diff --git a/config/cc/gcc.in.2 b/config/cc/gcc.in.2
--- a/config/cc/gcc.in.2
+++ b/config/cc/gcc.in.2
@@ -212,3 +212,41 @@
       option is ignored.
       
       The default is off.
+
+choice CC_GCC_LNK_HASH_STYLE_CHOICE
+    bool
+    prompt "linker hash style"
+    depends on CC_GCC_HAS_LNK_HASH_STYLE
+
+config CC_GCC_LNK_HASH_STYLE_DEFAULT
+    bool
+    prompt "Default"
+    help
+      Do not specify any value, and use the default value (sysv).
+
+config CC_GCC_LNK_HASH_STYLE_SYSV
+    bool
+    prompt "sysv"
+    help
+      Force use of the SYSV hash style.
+
+config CC_GCC_LNK_HASH_STYLE_GNU
+    bool
+    prompt "gnu"
+    help
+      Force use of the GNU hash style.
+
+config CC_GCC_LNK_HASH_STYLE_BOTH
+    bool
+    prompt "both"
+    help
+      Force use of both hash styles.
+
+endchoice # CC_GCC_LNK_HASH_STYLE_CHOICE
+
+config CC_GCC_LNK_HASH_STYLE
+    string
+    default ""      if CC_GCC_LNK_HASH_STYLE_DEFAULT
+    default "sysv"  if CC_GCC_LNK_HASH_STYLE_SYSV
+    default "gnu"   if CC_GCC_LNK_HASH_STYLE_GNU
+    default "both"  if CC_GCC_LNK_HASH_STYLE_BOTH
diff --git a/scripts/build/cc/gcc.sh b/scripts/build/cc/gcc.sh
--- a/scripts/build/cc/gcc.sh
+++ b/scripts/build/cc/gcc.sh
@@ -262,6 +262,11 @@
         extra_config+=( --enable-linker-build-id )
     fi
 
+    case "${CT_CC_GCC_LNK_HASH_STYLE}" in
+        "") ;
+        *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
+    esac
+
     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
 
     # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
@@ -535,6 +540,11 @@
         extra_config+=( --enable-linker-build-id )
     fi
 
+    case "${CT_CC_GCC_LNK_HASH_STYLE}" in
+        "") ;
+        *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
+    esac
+
     if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
         extra_config+=( --enable-plugin )
     fi

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[PATCH 0 of 4] No static link on Darwin + new gcc options

[Yann E. MORIN]

Hello All!

Here are a few patches that:
 - disable static linking on Darwin:
   - it does not work
   - it is not supported either
 - add a few new options to gcc:
   - pass build-id to the linker
   - pass hash-style to the linker (not used, requires upcoming 4.7)
   - use a few MIPS-related configure options

Titus, Bryan, can you confirm about the first patch? Thx.

Titus, you'd probably be interested only in the first patch, but I
sent it all as a single series, sorry for the noise.

 b/config/cc/gcc.in.2        |   64    64     0     0 ++++++++++++++++++++++++++++++++++++++++++++
 b/config/debug/gdb.in.cross |    1     1     0     0 +
 b/config/toolchain.in       |    1     1     0     0 +
 b/configure                 |   23    23     0     0 ++++++++++++++++
 b/config/cc/gcc.in          |   10    10     0     0 +++++++
 b/scripts/build/cc/gcc.sh   |   50    50     0     0 ++++++++++++++++++++++++++++++++++
 b/config/cc/gcc.in.mips     |   34    34     0     0 +++++++++++++++++++++++
 7 files changed, 183 insertions(+)

Regards,
Yann E. MORIN.

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[PATCH 4 of 4] cc/gcc: add MIPS spercific configure options

[Yann E. MORIN]

# HG changeset patch
# User "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
# Date 1309190690 -7200
# Node ID c412d5cc58402ebcd12fa44a3d1b65fa96e2953d
# Parent  9d62710aa7ce46782da2cc122477b5350ca7c82b
cc/gcc: add MIPS spercific configure options

Add the following MIPS specific options when configuring gcc:
  --with(out)-llsc
  --with(out)-synci
  --with(out)-mips-plt
  --with-divide=type

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>

diff --git a/config/cc/gcc.in.2 b/config/cc/gcc.in.2
--- a/config/cc/gcc.in.2
+++ b/config/cc/gcc.in.2
@@ -250,3 +250,15 @@
     default "sysv"  if CC_GCC_LNK_HASH_STYLE_SYSV
     default "gnu"   if CC_GCC_LNK_HASH_STYLE_GNU
     default "both"  if CC_GCC_LNK_HASH_STYLE_BOTH
+
+#-----------------------------------------------------------------------------
+
+config CC_GCC_HAS_ARCH_OPTIONS
+    bool
+
+comment "archictecture-specific options"
+    depends on CC_GCC_HAS_ARCH_OPTIONS
+
+if ARCH_mips
+source "config/cc/gcc.in.mips"
+endif # ARCH_mips
diff --git a/config/cc/gcc.in.mips b/config/cc/gcc.in.mips
new file mode 100644
--- /dev/null
+++ b/config/cc/gcc.in.mips
@@ -0,0 +1,34 @@
+# MIPS specific options for gcc
+
+config CC_GCC_HAS_ARCH_OPTIONS
+    default y
+
+config CC_GCC_mips_llsc
+    tristate
+    prompt "Use llsc"
+    default m
+    help
+      This configures how gcc will emit load-lock and store-conditional
+      opcodes. Normally, you'd set this to 'M', and configure will do the
+      correct thing (ie. enable llsc for Linux-based targets, disable for
+      others). If you know better, you can force either using llsc or not
+      using it (resp. 'Y' or 'N').
+
+config CC_GCC_mips_synci
+    tristate
+    prompt "Use synci"
+    default m
+    help
+      This configures how gcc will emit the synci opcode. Normally, you'd
+      set this to 'M', and configure will do the correct thing (ie. disable).
+      If you know better, you can force using synci (say 'Y'), or not using
+      it (say 'N').
+
+config CC_GCC_mips_plt
+    bool
+    prompt "Use copy relocations & PLTs"
+    help
+      This configures gcc to use copy relocations & PLTs. These are
+      extensions to the traditional SVR4-based MIPS ABIs and require
+      support from GNU binutils and the runtime C library.
+      Say 'N' to keep the default and not use them, say 'Y' to use them.
diff --git a/scripts/build/cc/gcc.sh b/scripts/build/cc/gcc.sh
--- a/scripts/build/cc/gcc.sh
+++ b/scripts/build/cc/gcc.sh
@@ -267,6 +267,22 @@
         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
     esac
 
+    case "${CT_CC_GCC_mips_llsc}" in
+        y)  extra_config+=( --with-llsc );;
+        m)  ;;
+        *)  extra_config+=( --without-llsc );;
+    esac
+
+    case "${CT_CC_GCC_mips_synci}" in
+        y)  extra_config+=( --with-synci );;
+        m)  ;;
+        *)  extra_config+=( --without-synci );;
+    esac
+
+    if [ "${CT_CC_GCC_mips_plt}" ]; then
+        extra_config+=( --with-mips-plt )
+    fi
+
     CT_DoLog DEBUG "Extra config passed: '${extra_config[*]}'"
 
     # Use --with-local-prefix so older gccs don't look in /usr/local (http://gcc.gnu.org/PR10532)
@@ -545,6 +561,22 @@
         *)  extra_config+=( "--with-linker-hash-style=${CT_CC_GCC_LNK_HASH_STYLE}" );;
     esac
 
+    case "${CT_CC_GCC_mips_llsc}" in
+        y)  extra_config+=( --with-llsc );;
+        m)  ;;
+        *)  extra_config+=( --without-llsc );;
+    esac
+
+    case "${CT_CC_GCC_mips_synci}" in
+        y)  extra_config+=( --with-synci );;
+        m)  ;;
+        *)  extra_config+=( --without-synci );;
+    esac
+
+    if [ "${CT_CC_GCC_mips_plt}" ]; then
+        extra_config+=( --with-mips-plt )
+    fi
+
     if [ "${CT_CC_GCC_ENABLE_PLUGINS}" = "y" ]; then
         extra_config+=( --enable-plugin )
     fi

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