1 # Helper function to check for gcc attributes.
2 # AST_GCC_ATTRIBUTE([attribute name])
4 AC_DEFUN([AST_GCC_ATTRIBUTE],
6 AC_MSG_CHECKING(for compiler 'attribute $1' support)
8 CFLAGS="$CFLAGS -Werror"
10 AC_LANG_PROGRAM([void __attribute__(($1)) *test(void *muffin, ...) {}],
13 AC_DEFINE_UNQUOTED([HAVE_ATTRIBUTE_$1], 1, [Define to 1 if your GCC C compiler supports the '$1' attribute.]),
16 CFLAGS="$saved_CFLAGS"