| AC_DEFUN([AX_C___ATTRIBUTE__], [ | |
| AC_MSG_CHECKING(for __attribute__) | |
| AC_CACHE_VAL(ac_cv___attribute__, [ | |
| AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#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__) | |
| ]) |