diff --git a/gfx/cairo/cairo/src/cairoint.h b/gfx/cairo/cairo/src/cairoint.h
index d71ddca..c3c2b9b 100644
--- a/gfx/cairo/cairo/src/cairoint.h
+++ b/gfx/cairo/cairo/src/cairoint.h
@@ -178,7 +178,7 @@ do {					\
 static inline int cairo_const
 _cairo_popcount (uint32_t mask)
 {
-#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4)
+#if __GNUC__ > 3 || (__GNUC__ == 3 && __GNUC_MINOR__ >= 4) || __clang__
     return __builtin_popcount (mask);
 #else
     register int y;