diff -r cc75c76972ee -r c0432d11811c src/gui/text/qfontmetrics.cpp
--- a/src/gui/text/qfontmetrics.cpp	Wed Apr 21 12:15:23 2010 +0300
+++ b/src/gui/text/qfontmetrics.cpp	Wed Apr 21 20:15:53 2010 +0300
@@ -63,7 +63,7 @@
                            int tf, const QString &text, QRectF *brect,
                            int tabStops, int *tabArray, int tabArrayLen,
                            QPainter *painter);
-extern int qt_defaultDpi();
+Q_GUI_EXPORT extern int qt_defaultDpi();
 
 /*****************************************************************************
   QFontMetrics member functions