diff -r cc75c76972ee -r c0432d11811c src/gui/painting/qpaintengine_alpha.cpp
--- a/src/gui/painting/qpaintengine_alpha.cpp	Wed Apr 21 12:15:23 2010 +0300
+++ b/src/gui/painting/qpaintengine_alpha.cpp	Wed Apr 21 20:15:53 2010 +0300
@@ -93,8 +93,8 @@
     return true;
 }
 
-extern int qt_defaultDpiX();
-extern int qt_defaultDpiY();
+Q_GUI_EXPORT extern int qt_defaultDpiX();
+Q_GUI_EXPORT extern int qt_defaultDpiY();
 
 bool QAlphaPaintEngine::end()
 {