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--- a/src/qtgui/confgui/trconf.pro
+++ b/src/qtgui/confgui/trconf.pro
@@ -14,7 +14,7 @@
   MOC_DIR = .moc
   OBJECTS_DIR = .obj
 
-  DEFINES += RECOLL_DATADIR=\"/usr/local/share/recoll\"
+  DEFINES += RECOLL_DATADIR='\\"/usr/local/share/recoll\\"'
   LIBS += ../../lib/librcl.a -lxapian -liconv -lz 
 
   INCLUDEPATH += ../../common ../../utils ../../rcldb
@@ -28,3 +28,5 @@
           LIBS -= -liconv
 }
 
+#The following line was inserted by qt3to4
+QT +=  qt3support