diff --git a/qgroundcontrol.pri b/qgroundcontrol.pri
index 7053257..fd7c590 100644
--- a/qgroundcontrol.pri
+++ b/qgroundcontrol.pri
@@ -20,6 +20,8 @@
 message(Qt version $$[QT_VERSION])
 message(Using Qt from $(QTDIR))
 
+QT_DIR = $$(QTDIR)
+
 release {
 #    DEFINES += QT_NO_DEBUG_OUTPUT
 #    DEFINES += QT_NO_WARNING_OUTPUT
@@ -362,24 +364,25 @@ DEFINES += QGC_OSG_ENABLED
     # Copy dependencies
     BASEDIR_WIN = $$replace(BASEDIR,"/","\\")
     TARGETDIR_WIN = $$replace(TARGETDIR,"/","\\")
+	QTDIR_WIN = $(QTDIR)
 
     exists($$TARGETDIR/debug) {
 	QMAKE_POST_LINK += $$quote(copy /Y "$$BASEDIR_WIN\\lib\\sdl\\win32\\SDL.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
 	QMAKE_POST_LINK += $$quote(xcopy /Y "$$BASEDIR_WIN\\audio" "$$TARGETDIR_WIN\\debug\\audio" /E /I $$escape_expand(\\n))
 	QMAKE_POST_LINK += $$quote(xcopy /Y "$$BASEDIR_WIN\\models" "$$TARGETDIR_WIN\\debug\\models" /E /I $$escape_expand(\\n))
 	QMAKE_POST_LINK += $$quote(copy /Y "$$BASEDIR_WIN\\images\\earth.html" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(xcopy /Y "$(QTDIR)\\plugins" "$$TARGETDIR_WIN\\debug" /E /I /EXCLUDE:copydebug.txt $$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\phonond4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtCored4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtGuid4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtMultimediad4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtNetworkd4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtOpenGLd4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtSqld4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtSvgd4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtWebKitd4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtXmld4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtXmlPatternsd4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(xcopy /Y "$$(QTDIR)\\plugins" "$$TARGETDIR_WIN\\debug" /E /I /EXCLUDE:copydebug.txt $$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\phonond4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtCored4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtGuid4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtMultimediad4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtNetworkd4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtOpenGLd4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtSqld4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtSvgd4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtWebKitd4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtXmld4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtXmlPatternsd4.dll" "$$TARGETDIR_WIN\\debug"$$escape_expand(\\n))
     }
 
     exists($$TARGETDIR/release) {
@@ -387,18 +390,18 @@ DEFINES += QGC_OSG_ENABLED
 	QMAKE_POST_LINK += $$quote(xcopy /Y "$$BASEDIR_WIN\\audio" "$$TARGETDIR_WIN\\release\\audio" /E /I $$escape_expand(\\n))
 	QMAKE_POST_LINK += $$quote(xcopy /Y "$$BASEDIR_WIN\\models" "$$TARGETDIR_WIN\\release\\models" /E /I $$escape_expand(\\n))
 	QMAKE_POST_LINK += $$quote(copy /Y "$$BASEDIR_WIN\\images\\earth.html" "$$TARGETDIR_WIN\\release\\earth.html" $$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(xcopy /Y "$(QTDIR)\\plugins" "$$TARGETDIR_WIN\\release" /E /I /EXCLUDE:copyrelease.txt $$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\phonon4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtCore4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtGui4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtMultimedia4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtNetwork4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtOpenGL4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtSql4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtSvg4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtWebKit4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtXml4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
-	QMAKE_POST_LINK += $$quote(copy /Y "$(QTDIR)\\bin\\QtXmlPatterns4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(xcopy /Y "$$(QTDIR)\\plugins" "$$TARGETDIR_WIN\\release" /E /I /EXCLUDE:copyrelease.txt $$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\phonon4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtCore4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtGui4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtMultimedia4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtNetwork4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtOpenGL4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtSql4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtSvg4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtWebKit4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtXml4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
+	QMAKE_POST_LINK += $$quote(copy /Y "$$(QTDIR)\\bin\\QtXmlPatterns4.dll" "$$TARGETDIR_WIN\\release"$$escape_expand(\\n))
 
     }