Commit ff76f8e5b4ceb24a2de2ea8b51db065f3c730312
2017-08-31T15:17:59
Fixed bug 3791 - SDL_bits.h: __builtin_clz is supported in gcc >= 3.4 Ozkan Sezer __builtin_clz is supported in gcc >= 3.4. The following patchlet adjusts SDL_bits.h for it.
diff --git a/include/SDL_bits.h b/include/SDL_bits.h
index 60cedc4..bc28572 100644
--- a/include/SDL_bits.h
+++ b/include/SDL_bits.h
@@ -60,7 +60,7 @@ extern _inline int _SDL_clz_watcom (Uint32);
SDL_FORCE_INLINE int
SDL_MostSignificantBitIndex32(Uint32 x)
{
-#if defined(__GNUC__) && __GNUC__ >= 4
+#if defined(__GNUC__) && (__GNUC__ >= 4 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4))
/* Count Leading Zeroes builtin in GCC.
* http://gcc.gnu.org/onlinedocs/gcc-4.3.4/gcc/Other-Builtins.html
*/