It seems that pkg-config still contains this bogus path. $ pkg-config QtGui --libs -L/usr/X11R6/lib -L/tmp/buildd/qt4-x11-4.1.0/lib -lQtGui -laudio -lXt -lpng -lSM -lICE -lQtCore -lz -lpthread -lXi -lXrender -lXrandr -lXcursor -lXinerama -lfreetype -lfontconfig -lXext -lX11 -lm -ldl This is from version 4.1.0-1 of libqt4-dev. Should this bug be reopened or new bug created? -- Tommi Vainikainen