It was posted in the tracker:
https://sourceforge.net/tracker/?func=detail&atid=105776&aid=2964966&group_id=5776
Detail by Bewo:
The dependency can be found in the file debian/control.
There is the build dependency libgtk1.2-dev listed.
This dependency has to be changed from libgtk1.2-dev to libgtk2.0-dev
