Allow building for x86 Linux on GCC < 4.5

Signed-off-by: Giel van Schijndel <me@mortis.eu>
python-greenlet · Jan 14, 2014 · 6cce4ca · 6cce4ca
1 parent bae7251
commit 6cce4ca
Showing 1 changed file with 8 additions and 2 deletions.
diff --git a/platform/switch_x86_unix.h b/platform/switch_x86_unix.h
@@ -36,9 +36,15 @@
 /* the above works fine with gcc 2.96, but 2.95.3 wants this */
 #define STACK_MAGIC 0
 
+#if __GNUC__ > 4 || (__GNUC__ == 4 && __GNUC_MINOR__ >= 5)
+# define ATTR_NOCLONE __attribute__((noclone))
+#else
+# define ATTR_NOCLONE
+#endif
+
 /* See below for the purpose of this function.  */
-__attribute__((noinline, noclone)) int fancy_return_zero(void);
-__attribute__((noinline, noclone)) int
+__attribute__((noinline)) ATTR_NOCLONE int fancy_return_zero(void);
+__attribute__((noinline)) ATTR_NOCLONE int
 fancy_return_zero(void)
 {
   return 0;