> The syntax errors are in lines like e. g. xpdflib.pro:6: > > linux-g++:QMAKE_CXXFKAGS_WARN_ON += Wno-unused -Wno-sign-compare > > Any help would be greatly appreciated. You can just remove these lines (grep for QMAKE in *.pro files). You'll get many warning messages when compiling, but no harm is done. Otfried