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From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r12-6409] libstdc++: Fix and simplify freestanding configuration [PR103866] Date: Mon, 10 Jan 2022 12:18:41 +0000 (GMT) [thread overview] Message-ID: <20220110121841.84661389900B@sourceware.org> (raw) https://gcc.gnu.org/g:68c2e9e9234cb301e9e81792cad233a41e797792 commit r12-6409-g68c2e9e9234cb301e9e81792cad233a41e797792 Author: Jonathan Wakely <jwakely@redhat.com> Date: Thu Jan 6 13:54:53 2022 +0000 libstdc++: Fix and simplify freestanding configuration [PR103866] This fixes the --disable-hosted-libstdcxx build so that it works with --without-headers. Currently you need to also use --with-newlib, which is confusing for users who aren't actually using newlib. The AM_PROG_LIBTOOL checks are currently skipped for --with-newlib and --with-avrlibc builds, with this change they are also skipped when using --without-headers. It would be nice if using --disable-hosted-libstdcxx automatically skipped those checks, but GLIBCXX_ENABLE_HOSTED comes too late to make the AM_PROG_LIBTOOL checks depend on $is_hosted. The checks for EOF, SEEK_CUR etc. cause the build to fail if there is no <stdio.h> available. Unlike most headers, which get a HAVE_FOO_H macro, <stdio.h> is in autoconf's default includes, so every check tries to include it unconditionally. This change skips those checks for freestanding builds. Similarly, the checks for <stdint.h> types done by GCC_HEADER_STDINT try to include <stdio.h> and fail for --without-headers builds. This change skips the use of GCC_HEADER_STDINT for freestanding. We can probably stop using GCC_HEADER_STDINT entirely, since only one file uses the gstdint.h header that is generated, and that could easily be changed to use <stdint.h> instead. That can wait for stage 1. We also need to skip the GLIBCXX_CROSSCONFIG stage if --without-headers was used, since we don't have any of the functions it deals with. The end result of the changes above is that it should not be necessary for a --disable-hosted-libstdcxx --without-headers build to also use --with-newlib. Finally, compile libsupc++ with -ffreestanding when --without-headers is used, so that <stdint.h> will use <gcc-stdint.h> instead of expecting it to come from libc. libstdc++-v3/ChangeLog: PR libstdc++/103866 * acinclude.m4 (GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS): Do nothing for freestanding builds. (GLIBCXX_ENABLE_HOSTED): Define FREESTANDING_FLAGS. * configure.ac: Do not use AC_LIBTOOL_DLOPEN when configured with --without-headers. Do not use GCC_HEADER_STDINT for freestanding builds. * libsupc++/Makefile.am (HOSTED_CXXFLAGS): Use -ffreestanding for freestanding builds. * configure: Regenerate. * Makefile.in: Regenerate. * doc/Makefile.in: Regenerate. * include/Makefile.in: Regenerate. * libsupc++/Makefile.in: Regenerate. * po/Makefile.in: Regenerate. * python/Makefile.in: Regenerate. * src/Makefile.in: Regenerate. * src/c++11/Makefile.in: Regenerate. * src/c++17/Makefile.in: Regenerate. * src/c++20/Makefile.in: Regenerate. * src/c++98/Makefile.in: Regenerate. * src/filesystem/Makefile.in: Regenerate. * testsuite/Makefile.in: Regenerate. Diff: --- libstdc++-v3/Makefile.in | 1 + libstdc++-v3/acinclude.m4 | 8 ++++++++ libstdc++-v3/configure | 35 +++++++++++++++++++++++---------- libstdc++-v3/configure.ac | 10 ++++++++-- libstdc++-v3/doc/Makefile.in | 1 + libstdc++-v3/include/Makefile.in | 1 + libstdc++-v3/libsupc++/Makefile.am | 2 +- libstdc++-v3/libsupc++/Makefile.in | 3 ++- libstdc++-v3/po/Makefile.in | 1 + libstdc++-v3/python/Makefile.in | 1 + libstdc++-v3/src/Makefile.in | 1 + libstdc++-v3/src/c++11/Makefile.in | 1 + libstdc++-v3/src/c++17/Makefile.in | 1 + libstdc++-v3/src/c++20/Makefile.in | 1 + libstdc++-v3/src/c++98/Makefile.in | 1 + libstdc++-v3/src/filesystem/Makefile.in | 1 + libstdc++-v3/testsuite/Makefile.in | 1 + 17 files changed, 56 insertions(+), 14 deletions(-) diff --git a/libstdc++-v3/Makefile.in b/libstdc++-v3/Makefile.in index a1955dddd15..150e4d08051 100644 --- a/libstdc++-v3/Makefile.in +++ b/libstdc++-v3/Makefile.in @@ -240,6 +240,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index 635168d7e25..b770d5bcdc4 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -2081,6 +2081,7 @@ dnl Compute the EOF, SEEK_CUR, and SEEK_END integer constants. dnl AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [ +if test "$is_hosted" = yes; then AC_CACHE_CHECK([for the value of EOF], glibcxx_cv_stdio_eof, [ AC_COMPUTE_INT([glibcxx_cv_stdio_eof], [[EOF]], [#include <stdio.h>], @@ -2104,6 +2105,7 @@ AC_DEFUN([GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS], [ ]) AC_DEFINE_UNQUOTED(_GLIBCXX_STDIO_SEEK_END, $glibcxx_cv_stdio_seek_end, [Define to the value of the SEEK_END integer constant.]) +fi ]) dnl @@ -2923,12 +2925,16 @@ AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [ enable_hosted_libstdcxx=yes ;; esac]) + freestanding_flags= if test "$enable_hosted_libstdcxx" = no; then AC_MSG_NOTICE([Only freestanding libraries will be built]) is_hosted=no hosted_define=0 enable_abi_check=no enable_libstdcxx_pch=no + if test "x$with_headers" = xno; then + freestanding_flags="-ffreestanding" + fi else is_hosted=yes hosted_define=1 @@ -2936,6 +2942,8 @@ AC_DEFUN([GLIBCXX_ENABLE_HOSTED], [ GLIBCXX_CONDITIONAL(GLIBCXX_HOSTED, test $is_hosted = yes) AC_DEFINE_UNQUOTED(_GLIBCXX_HOSTED, $hosted_define, [Define to 1 if a full hosted library is built, or 0 if freestanding.]) + FREESTANDING_FLAGS="$freestanding_flags" + AC_SUBST(FREESTANDING_FLAGS) ]) diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure index b1a0157d0b9..0f291863747 100755 --- a/libstdc++-v3/configure +++ b/libstdc++-v3/configure @@ -771,6 +771,7 @@ thread_header glibcxx_PCHFLAGS GLIBCXX_BUILD_PCH_FALSE GLIBCXX_BUILD_PCH_TRUE +FREESTANDING_FLAGS GLIBCXX_HOSTED_FALSE GLIBCXX_HOSTED_TRUE glibcxx_compiler_shared_flag @@ -5949,7 +5950,9 @@ $as_echo "$as_me: OS config directory is $os_include_dir" >&6;} # Libtool setup. -if test "x${with_newlib}" != "xyes" && test "x${with_avrlibc}" != "xyes"; then +if test "x${with_newlib}" != "xyes" && + test "x${with_avrlibc}" != "xyes" && + test "x$with_headers" != "xno"; then enable_dlopen=yes @@ -12176,7 +12179,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 12179 "configure" +#line 12182 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -12282,7 +12285,7 @@ else lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2 lt_status=$lt_dlunknown cat > conftest.$ac_ext <<_LT_EOF -#line 12285 "configure" +#line 12288 "configure" #include "confdefs.h" #if HAVE_DLFCN_H @@ -15623,6 +15626,7 @@ else esac fi + freestanding_flags= if test "$enable_hosted_libstdcxx" = no; then { $as_echo "$as_me:${as_lineno-$LINENO}: Only freestanding libraries will be built" >&5 $as_echo "$as_me: Only freestanding libraries will be built" >&6;} @@ -15630,6 +15634,9 @@ $as_echo "$as_me: Only freestanding libraries will be built" >&6;} hosted_define=0 enable_abi_check=no enable_libstdcxx_pch=no + if test "x$with_headers" = xno; then + freestanding_flags="-ffreestanding" + fi else is_hosted=yes hosted_define=1 @@ -15640,6 +15647,8 @@ cat >>confdefs.h <<_ACEOF #define _GLIBCXX_HOSTED $hosted_define _ACEOF + FREESTANDING_FLAGS="$freestanding_flags" + # Enable descriptive messages to standard output on termination. @@ -15960,7 +15969,7 @@ $as_echo "$glibcxx_cv_atomic_long_long" >&6; } # Fake what AC_TRY_COMPILE does. cat > conftest.$ac_ext << EOF -#line 15963 "configure" +#line 15972 "configure" int main() { typedef bool atomic_type; @@ -15995,7 +16004,7 @@ $as_echo "$glibcxx_cv_atomic_bool" >&6; } rm -f conftest* cat > conftest.$ac_ext << EOF -#line 15998 "configure" +#line 16007 "configure" int main() { typedef short atomic_type; @@ -16030,7 +16039,7 @@ $as_echo "$glibcxx_cv_atomic_short" >&6; } rm -f conftest* cat > conftest.$ac_ext << EOF -#line 16033 "configure" +#line 16042 "configure" int main() { // NB: _Atomic_word not necessarily int. @@ -16066,7 +16075,7 @@ $as_echo "$glibcxx_cv_atomic_int" >&6; } rm -f conftest* cat > conftest.$ac_ext << EOF -#line 16069 "configure" +#line 16078 "configure" int main() { typedef long long atomic_type; @@ -16219,7 +16228,7 @@ $as_echo "mutex" >&6; } # unnecessary for this test. cat > conftest.$ac_ext << EOF -#line 16222 "configure" +#line 16231 "configure" int main() { _Decimal32 d1; @@ -16261,7 +16270,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu # unnecessary for this test. cat > conftest.$ac_ext << EOF -#line 16264 "configure" +#line 16273 "configure" template<typename T1, typename T2> struct same { typedef T2 type; }; @@ -20183,6 +20192,7 @@ ac_compiler_gnu=$ac_cv_c_compiler_gnu # For the EOF, SEEK_CUR, and SEEK_END integer constants. +if test "$is_hosted" = yes; then { $as_echo "$as_me:${as_lineno-$LINENO}: checking for the value of EOF" >&5 $as_echo_n "checking for the value of EOF... " >&6; } if ${glibcxx_cv_stdio_eof+:} false; then : @@ -20248,6 +20258,7 @@ cat >>confdefs.h <<_ACEOF #define _GLIBCXX_STDIO_SEEK_END $glibcxx_cv_stdio_seek_end _ACEOF +fi # For gettimeofday support. @@ -29129,7 +29140,7 @@ else $as_echo "#define HAVE_MEMALIGN 1" >>confdefs.h - else + elif test "x$with_headers" != "xno"; then # Base decisions on target environment. case "${host}" in @@ -74203,6 +74214,9 @@ $as_echo "#define HAVE_LINUX_FUTEX 1" >>confdefs.h fi +if test "$is_hosted" = yes; then +# TODO: remove this and change src/c++11/compatibility-atomic-c++0x.cc to +# use <stdint.h> instead of <gstdint.h>. inttype_headers=`echo inttypes.h sys/inttypes.h | sed -e 's/,/ /g'` @@ -74604,6 +74618,7 @@ ac_config_commands="$ac_config_commands include/gstdint.h" +fi { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU c++filt" >&5 diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac index 5b3c92f4bd7..827d770f444 100644 --- a/libstdc++-v3/configure.ac +++ b/libstdc++-v3/configure.ac @@ -90,7 +90,9 @@ AC_SYS_LARGEFILE GLIBCXX_CONFIGURE # Libtool setup. -if test "x${with_newlib}" != "xyes" && test "x${with_avrlibc}" != "xyes"; then +if test "x${with_newlib}" != "xyes" && + test "x${with_avrlibc}" != "xyes" && + test "x$with_headers" != "xno"; then AC_LIBTOOL_DLOPEN fi AM_PROG_LIBTOOL @@ -351,7 +353,7 @@ else AC_DEFINE(HAVE_ICONV) AC_DEFINE(HAVE_MEMALIGN) - else + elif test "x$with_headers" != "xno"; then GLIBCXX_CROSSCONFIG fi @@ -390,7 +392,11 @@ GCC_CHECK_UNWIND_GETIPINFO GCC_LINUX_FUTEX([AC_DEFINE(HAVE_LINUX_FUTEX, 1, [Define if futex syscall is available.])]) +if test "$is_hosted" = yes; then +# TODO: remove this and change src/c++11/compatibility-atomic-c++0x.cc to +# use <stdint.h> instead of <gstdint.h>. GCC_HEADER_STDINT(include/gstdint.h) +fi GLIBCXX_ENABLE_SYMVERS([yes]) AC_SUBST(libtool_VERSION) diff --git a/libstdc++-v3/doc/Makefile.in b/libstdc++-v3/doc/Makefile.in index bfb3ce7ffdf..443d29192ad 100644 --- a/libstdc++-v3/doc/Makefile.in +++ b/libstdc++-v3/doc/Makefile.in @@ -199,6 +199,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in index 4e4a240831a..0031f54f3fa 100644 --- a/libstdc++-v3/include/Makefile.in +++ b/libstdc++-v3/include/Makefile.in @@ -199,6 +199,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/libsupc++/Makefile.am b/libstdc++-v3/libsupc++/Makefile.am index 2a69a1cf677..65b5c1a87fd 100644 --- a/libstdc++-v3/libsupc++/Makefile.am +++ b/libstdc++-v3/libsupc++/Makefile.am @@ -139,7 +139,7 @@ atomicity.cc: ${atomicity_file} # as the occasion call for it. AM_CXXFLAGS = \ $(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \ - $(XTEMPLATE_FLAGS) \ + $(XTEMPLATE_FLAGS) $(FREESTANDING_FLAGS) \ $(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS) AM_MAKEFLAGS = \ diff --git a/libstdc++-v3/libsupc++/Makefile.in b/libstdc++-v3/libsupc++/Makefile.in index 5776a56282b..5cbbf994d1a 100644 --- a/libstdc++-v3/libsupc++/Makefile.in +++ b/libstdc++-v3/libsupc++/Makefile.in @@ -308,6 +308,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ @@ -579,7 +580,7 @@ atomicity_file = ${glibcxx_srcdir}/$(ATOMICITY_SRCDIR)/atomicity.h # as the occasion call for it. AM_CXXFLAGS = \ $(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \ - $(XTEMPLATE_FLAGS) \ + $(XTEMPLATE_FLAGS) $(FREESTANDING_FLAGS) \ $(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS) AM_MAKEFLAGS = \ diff --git a/libstdc++-v3/po/Makefile.in b/libstdc++-v3/po/Makefile.in index 8edd2e05639..0d29364c67b 100644 --- a/libstdc++-v3/po/Makefile.in +++ b/libstdc++-v3/po/Makefile.in @@ -199,6 +199,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/python/Makefile.in b/libstdc++-v3/python/Makefile.in index b3b56c41597..07b5807323e 100644 --- a/libstdc++-v3/python/Makefile.in +++ b/libstdc++-v3/python/Makefile.in @@ -229,6 +229,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/src/Makefile.in b/libstdc++-v3/src/Makefile.in index 05b25ed5e9d..fa4b243bd23 100644 --- a/libstdc++-v3/src/Makefile.in +++ b/libstdc++-v3/src/Makefile.in @@ -298,6 +298,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/src/c++11/Makefile.in b/libstdc++-v3/src/c++11/Makefile.in index 86540509e81..d20d1ed0216 100644 --- a/libstdc++-v3/src/c++11/Makefile.in +++ b/libstdc++-v3/src/c++11/Makefile.in @@ -265,6 +265,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/src/c++17/Makefile.in b/libstdc++-v3/src/c++17/Makefile.in index 8c02be6514f..83d8490a47a 100644 --- a/libstdc++-v3/src/c++17/Makefile.in +++ b/libstdc++-v3/src/c++17/Makefile.in @@ -245,6 +245,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/src/c++20/Makefile.in b/libstdc++-v3/src/c++20/Makefile.in index e6892d370fb..5f0acb48140 100644 --- a/libstdc++-v3/src/c++20/Makefile.in +++ b/libstdc++-v3/src/c++20/Makefile.in @@ -240,6 +240,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/src/c++98/Makefile.in b/libstdc++-v3/src/c++98/Makefile.in index f9ebb0ff4f4..12c6f2d4c4d 100644 --- a/libstdc++-v3/src/c++98/Makefile.in +++ b/libstdc++-v3/src/c++98/Makefile.in @@ -261,6 +261,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/src/filesystem/Makefile.in b/libstdc++-v3/src/filesystem/Makefile.in index 74a6d2765fc..e0693b194c2 100644 --- a/libstdc++-v3/src/filesystem/Makefile.in +++ b/libstdc++-v3/src/filesystem/Makefile.in @@ -269,6 +269,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@ diff --git a/libstdc++-v3/testsuite/Makefile.in b/libstdc++-v3/testsuite/Makefile.in index c65cdaf2015..b442dfe5f20 100644 --- a/libstdc++-v3/testsuite/Makefile.in +++ b/libstdc++-v3/testsuite/Makefile.in @@ -199,6 +199,7 @@ EXEEXT = @EXEEXT@ EXTRA_CFLAGS = @EXTRA_CFLAGS@ EXTRA_CXX_FLAGS = @EXTRA_CXX_FLAGS@ FGREP = @FGREP@ +FREESTANDING_FLAGS = @FREESTANDING_FLAGS@ GLIBCXX_INCLUDES = @GLIBCXX_INCLUDES@ GLIBCXX_LIBS = @GLIBCXX_LIBS@ GREP = @GREP@
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