g++  -o pencil bezierarea.o beziercurve.o colourref.o editor.o flash.o layer.o layerbitmap.o layerimage.o layersound.o layervector.o main.o mainwindow.o object.o palette.o prefswin.o scribblearea.o timeline.o toolset.o vectorpicture.o vertexref.o moc_editor.o moc_mainwindow.o moc_object.o moc_palette.o moc_prefswin.o moc_scribblearea.o moc_timeline.o moc_toolset.o qrc_pencil.o    -L/usr/lib /usr/lib/libming.a -lQtXml -lQtGui -lQtCore -lpthread
/usr/lib/libming.a(gifdbl.o): In function `readGif':
(.text+0x87): undefined reference to `DGifSlurp'
/usr/lib/libming.a(gifdbl.o): In function `readGif':
(.text+0x286): undefined reference to `DGifCloseFile'
/usr/lib/libming.a(gifdbl.o): In function `newSWFDBLBitmapData_fromGifInput':
(.text+0x38d): undefined reference to `DGifOpen'
/usr/lib/libming.a(gifdbl.o): In function `newSWFDBLBitmapData_fromGifFile':
(.text+0x3c6): undefined reference to `DGifOpenFileName'
collect2: ld returned 1 exit status
make: *** [pencil] Error 1