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| 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 ]) |
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