1 dnl modified AC_C_INLINE from autoconf/c.m4
3 AN_IDENTIFIER([attribute], [AC_C_ATTRIBUTE])
4 AC_DEFUN([AC_C_ATTRIBUTE],
5 [AC_CACHE_CHECK([for __attribute__], ac_cv_c_attribute,
7 AC_COMPILE_IFELSE([AC_LANG_SOURCE(
8 [void foo(void) __attribute__ ((__noreturn__));]
10 [ac_cv_c_attribute=yes],
11 [ac_cv_c_attribute=no]
14 AH_VERBATIM([attribute],
15 [/* Define to `__attribute__' to nothing if it's not supported. */
16 #undef __attribute__])
17 case $ac_cv_c_attribute in
20 cat >>confdefs.h <<_ACEOF
21 #define __attribute__(x) /* nothing */