diff -r ffebf1c98ee4 -r fcf70b65667d QTfrontend/CMakeLists.txt
--- a/QTfrontend/CMakeLists.txt	Wed Aug 13 17:06:17 2014 +0200
+++ b/QTfrontend/CMakeLists.txt	Wed Aug 13 17:25:55 2014 +0200
@@ -14,7 +14,8 @@
 include(${QT_USE_FILE})
 
 if(APPLE AND
-   ${QTVERSION} VERSION_EQUAL "4.7.4")
+   ${QTVERSION} VERSION_GREATER "4.7.0" AND
+   ${QTVERSION} VERSION_LESS "4.7.4")
    message(FATAL_ERROR "This version of Qt is known *not* to work, please update or use a lower version")
 endif()