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| author | Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE> | 2013-11-22 11:44:56 +0000 |
|---|---|---|
| committer | Rainer Orth <ro@gcc.gnu.org> | 2013-11-22 11:44:56 +0000 |
| commit | 954d4574058aacd03f1cc7ff27ed52ed8fbae32f (patch) | |
| tree | ecf4f142c4963ac96a87adfd48c7b2b184696bbf /libcilkrts/configure.ac | |
| parent | 517854bc935fb83fc01263ebd8272de316483d25 (diff) | |
| download | gcc-954d4574058aacd03f1cc7ff27ed52ed8fbae32f.zip gcc-954d4574058aacd03f1cc7ff27ed52ed8fbae32f.tar.gz gcc-954d4574058aacd03f1cc7ff27ed52ed8fbae32f.tar.bz2 | |
Only use visibility if supported
* configure.ac (libcilkrts_cv_have_attribute_visibility): Check
for __attribute__((visibility)).
* configure: Regenerate.
* include/cilk/common.h (CILK_EXPORT, CILK_EXPORT_DATA): Only use
__attribute__((visibility)) if HAVE_ATTRIBUTE_VISIBILITY.
From-SVN: r205254
Diffstat (limited to 'libcilkrts/configure.ac')
| -rw-r--r-- | libcilkrts/configure.ac | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/libcilkrts/configure.ac b/libcilkrts/configure.ac index 0332d9c..84588db 100644 --- a/libcilkrts/configure.ac +++ b/libcilkrts/configure.ac @@ -54,6 +54,18 @@ AC_CONFIG_FILES([Makefile]) AM_ENABLE_MULTILIB(, ..) AC_FUNC_ALLOCA +# Check whether the target supports protected visibility. +save_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -Werror" +AC_TRY_COMPILE([void __attribute__((visibility("protected"))) foo(void) { }], + [], libcilkrts_cv_have_attribute_visibility=yes, + libcilkrts_cv_have_attribute_visibility=no) +CFLAGS="$save_CFLAGS" +if test $libcilkrts_cv_have_attribute_visibility = yes; then + AC_DEFINE(HAVE_ATTRIBUTE_VISIBILITY, 1, + [Define to 1 if the target supports __attribute__((visibility(...))).]) +fi + # Get target configury. . ${srcdir}/configure.tgt if test -n "$UNSUPPORTED"; then |