Squashed 'third_party/ctemplate/' content from commit 6742f62
Change-Id: I828e4e4c906f13ba19944d78a8a78652b62949af
git-subtree-dir: third_party/ctemplate
git-subtree-split: 6742f6233db12f545e90baa8f34f5c29c4eb396a
diff --git a/m4/ac_have_attribute.m4 b/m4/ac_have_attribute.m4
new file mode 100644
index 0000000..19f4021
--- /dev/null
+++ b/m4/ac_have_attribute.m4
@@ -0,0 +1,16 @@
+AC_DEFUN([AX_C___ATTRIBUTE__], [
+ AC_MSG_CHECKING(for __attribute__)
+ AC_CACHE_VAL(ac_cv___attribute__, [
+ AC_TRY_COMPILE(
+ [#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__)
+])