diff -r ef0373b55136 -r 758a864f9613 src/corelib/global/qglobal.h
--- a/src/corelib/global/qglobal.h	Fri Sep 17 08:34:18 2010 +0300
+++ b/src/corelib/global/qglobal.h	Mon Oct 04 01:19:32 2010 +0300
@@ -981,9 +981,11 @@
 #  undef QT_DEPRECATED_VARIABLE
 #  undef QT_DEPRECATED_CONSTRUCTOR
 #elif defined(QT_DEPRECATED_WARNINGS)
+#  ifdef QT3_SUPPORT
 /* enable Qt3 support warnings as well */
-#  undef QT3_SUPPORT_WARNINGS
-#  define QT3_SUPPORT_WARNINGS
+#    undef QT3_SUPPORT_WARNINGS
+#    define QT3_SUPPORT_WARNINGS
+#  endif
 #  undef QT_DEPRECATED
 #  define QT_DEPRECATED Q_DECL_DEPRECATED
 #  undef QT_DEPRECATED_VARIABLE