diff -r ef0373b55136 -r 758a864f9613 src/gui/styles/qmacstyle_mac.h
--- a/src/gui/styles/qmacstyle_mac.h	Fri Sep 17 08:34:18 2010 +0300
+++ b/src/gui/styles/qmacstyle_mac.h	Mon Oct 04 01:19:32 2010 +0300
@@ -60,6 +60,8 @@
 #define Q_GUI_EXPORT_STYLE_MAC Q_GUI_EXPORT
 #endif
 
+class QPushButton;
+class QStyleOptionButton;
 class QMacStylePrivate;
 class Q_GUI_EXPORT_STYLE_MAC QMacStyle : public QWindowsStyle
 {
@@ -133,6 +135,8 @@
     Q_DISABLE_COPY(QMacStyle)
 
     QMacStylePrivate *d;
+
+    friend bool qt_mac_buttonIsRenderedFlat(const QPushButton *pushButton, const QStyleOptionButton *option);
 };
 
 #endif // Q_WS_MAC