Hi! The current last release of Freecad is qt5-based. Please consider switching to this version.
Remember there are links to uselfull packaging tips in the original mail and you can always contacts us if you need help during the packaging. Kinds regards, Lisandro. -- Lisandro Damián Nicanor Pérez Meyer http://perezmeyer.com.ar/ http://perezmeyer.blogspot.com/