diff options
Diffstat (limited to 'third_party/glog/m4/ac_have_attribute.m4')
| -rw-r--r-- | third_party/glog/m4/ac_have_attribute.m4 | 16 |
1 files changed, 16 insertions, 0 deletions
diff --git a/third_party/glog/m4/ac_have_attribute.m4 b/third_party/glog/m4/ac_have_attribute.m4 new file mode 100644 index 000000000000..19f4021e9901 --- /dev/null +++ b/third_party/glog/m4/ac_have_attribute.m4 @@ -0,0 +1,16 @@ +AC_DEFUN([AX_C___ATTRIBUTE__], [ + AC_MSG_CHECKING(for __attribute__) + AC_CACHE_VAL(ac_cv___attribute__, [ + AC_TRY_COMPILE( + [#include <stdlib.h> + static void foo(void) __attribute__ ((unused)); + void foo(void) { exit(1); }], + [], + ac_cv___attribute__=yes, + ac_cv___attribute__=no + )]) + if test "$ac_cv___attribute__" = "yes"; then + AC_DEFINE(HAVE___ATTRIBUTE__, 1, [define if your compiler has __attribute__]) + fi + AC_MSG_RESULT($ac_cv___attribute__) +]) |