| Austin Schuh | 906616c | 2019-01-21 20:25:11 -0800 | [diff] [blame^] | 1 | AC_DEFUN([AX_C___ATTRIBUTE__], [ |
| 2 | AC_MSG_CHECKING(for __attribute__) |
| 3 | AC_CACHE_VAL(ac_cv___attribute__, [ |
| 4 | AC_TRY_COMPILE( |
| 5 | [#include <stdlib.h> |
| 6 | static void foo(void) __attribute__ ((unused)); |
| 7 | void foo(void) { exit(1); }], |
| 8 | [], |
| 9 | ac_cv___attribute__=yes, |
| 10 | ac_cv___attribute__=no |
| 11 | )]) |
| 12 | if test "$ac_cv___attribute__" = "yes"; then |
| 13 | AC_DEFINE(HAVE___ATTRIBUTE__, 1, [define if your compiler has __attribute__]) |
| 14 | fi |
| 15 | AC_MSG_RESULT($ac_cv___attribute__) |
| 16 | ]) |