--- a/QTfrontend/CMakeLists.txt	Mon Sep 19 14:38:44 2011 +0200
+++ b/QTfrontend/CMakeLists.txt	Mon Sep 19 19:12:19 2011 +0200
@@ -1,5 +1,6 @@
 # Configure for Qt4
 set(QT_MIN_VERSION "4.5.0")
+include(CheckLibraryExists)
 
 set(QT_USE_QTCORE TRUE)
 set(QT_USE_QTGUI TRUE)