diff options
| author | ro <ro@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-09-12 12:38:15 +0000 |
|---|---|---|
| committer | ro <ro@138bc75d-0d04-0410-961f-82ee72b054a4> | 2012-09-12 12:38:15 +0000 |
| commit | 34f4e39e38e13b6cd469c37c37af8726f4b06caa (patch) | |
| tree | 5845b6afc5c99ac29a4d539b36edb4c7ae60068e /libstdc++-v3/acinclude.m4 | |
| parent | 0e33a79d8d80c8b694dac307387ff8208da26f61 (diff) | |
| download | gcc-34f4e39e38e13b6cd469c37c37af8726f4b06caa.tar.gz | |
Clear hardware capabilities on libstdc++.so with Sun as
* acinclude.m4 (GLIBCXX_CHECK_ASSEMBLER_HWCAP): Define.
* configure.ac: Call GLIBCXX_CHECK_ASSEMBLER_HWCAP.
* fragment.am (CONFIG_CXXFLAGS): Add $(HWCAP_FLAGS).
* configure: Regenerate.
* Makefile.in: Regenerate.
* doc/Makefile.in: Regenerate.
* include/Makefile.in: Regenerate.
* libsupc++/Makefile.in: Regenerate.
* po/Makefile.in: Regenerate.
* python/Makefile.in: Regenerate.
* src/Makefile.in: Regenerate.
* src/c++11/Makefile.in: Regenerate.
* src/c++98/Makefile.in: Regenerate.
* testsuite/Makefile.in: Regenerate.
git-svn-id: svn+ssh://gcc.gnu.org/svn/gcc/trunk@191218 138bc75d-0d04-0410-961f-82ee72b054a4
Diffstat (limited to 'libstdc++-v3/acinclude.m4')
| -rw-r--r-- | libstdc++-v3/acinclude.m4 | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/libstdc++-v3/acinclude.m4 b/libstdc++-v3/acinclude.m4 index 794df5c22be..ab26660782e 100644 --- a/libstdc++-v3/acinclude.m4 +++ b/libstdc++-v3/acinclude.m4 @@ -169,6 +169,32 @@ AC_DEFUN([GLIBCXX_CHECK_COMPILER_FEATURES], [ dnl +dnl Check if the assembler used supports disabling generation of hardware +dnl capabilities. This is only supported by Sun as at the moment. +dnl +dnl Defines: +dnl HWCAP_FLAGS='-Wa,-nH' if possible. +dnl +AC_DEFUN([GLIBCXX_CHECK_ASSEMBLER_HWCAP], [ + test -z "$HWCAP_FLAGS" && HWCAP_FLAGS='' + + ac_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -Wa,-nH" + + AC_MSG_CHECKING([for as that supports -Wa,-nH]) + AC_TRY_COMPILE([], [return 0;], [ac_hwcap_flags=yes],[ac_hwcap_flags=no]) + if test "$ac_hwcap_flags" = "yes"; then + HWCAP_FLAGS="-Wa,-nH $HWCAP_FLAGS" + fi + AC_MSG_RESULT($ac_hwcap_flags) + + CFLAGS="$ac_save_CFLAGS" + + AC_SUBST(HWCAP_FLAGS) +]) + + +dnl dnl If GNU ld is in use, check to see if tricky linker opts can be used. If dnl the native linker is in use, all variables will be defined to something dnl safe (like an empty string). |