I have tried to grab more debug outputs, and here are my relevant printouts: statusPC_RAPTOR2_LIBDIR: /usr/lib statusPC_RAPTOR2_LIBRARY_DIRS: statusPC_RAPTOR2_INCLUDEDIR: /usr/include/raptor2 statusPC_RAPTOR2_INCLUDE_DIRS: /usr/include/raptor2 It seems okay to me, thus I am now even more lost.. :) Best Regards, Laszlo Papp