diff -r ef0373b55136 -r 758a864f9613 src/gui/styles/qmacstyle_mac_p.h
--- a/src/gui/styles/qmacstyle_mac_p.h	Fri Sep 17 08:34:18 2010 +0300
+++ b/src/gui/styles/qmacstyle_mac_p.h	Mon Oct 04 01:19:32 2010 +0300
@@ -150,6 +150,8 @@
         return sizes[controlSize]; \
     } while (0)
 
+bool qt_mac_buttonIsRenderedFlat(const QPushButton *pushButton, const QStyleOptionButton *option);
+
 class QMacStylePrivate : public QObject
 {
     Q_OBJECT