diff options
Diffstat (limited to 'm4/ac_gnuc.m4')
| -rw-r--r-- | m4/ac_gnuc.m4 | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/m4/ac_gnuc.m4 b/m4/ac_gnuc.m4 new file mode 100644 index 0000000..6639d3b --- /dev/null +++ b/m4/ac_gnuc.m4 @@ -0,0 +1,12 @@ +AC_DEFUN([AC__GNUC_], +[ + AC_MSG_CHECKING(for _GNUC_) + AC_CACHE_VAL(ac_cv___attribute__, [ + AC_TRY_COMPILE([#include <stdlib.h>], + [int func(int x); int foo(int x __attribute__ ((unused))) { exit(1); }], + ac_cv___attribute__=yes, ac_cv___attribute__=no)]) + if test "$ac_cv___attribute__" = "yes"; then + AC_DEFINE(HAVE___ATTRIBUTE__, 1, [Define to 1 if your compiler has __attribute__]) + fi + AC_MSG_RESULT($ac_cv___attribute__) +]) |