--- modules/core/src/parallel.cpp.orig	2013-03-20 13:41:07.000000000 +0400
+++ modules/core/src/parallel.cpp	2013-03-20 13:41:21.000000000 +0400
@@ -65,10 +65,6 @@
     #define HAVE_OPENMP
 #endif
 
-#ifdef __APPLE__
-    #define HAVE_GCD
-#endif
-
 #if defined _MSC_VER && _MSC_VER >= 1600
     #define HAVE_CONCURRENCY
 #endif