diff -r b72c6db6890b -r 5dc02b23752f src/gui/kernel/qt_mac_p.h
--- a/src/gui/kernel/qt_mac_p.h	Wed Jun 23 19:07:03 2010 +0300
+++ b/src/gui/kernel/qt_mac_p.h	Tue Jul 06 15:10:48 2010 +0300
@@ -57,6 +57,9 @@
 
 #ifdef __OBJC__
 #include <Cocoa/Cocoa.h>
+#ifdef QT_MAC_USE_COCOA
+#include <objc/runtime.h>
+#endif // QT_MAC_USE_COCOA
 #endif
 
 #include <CoreServices/CoreServices.h>