Build steps - Linux: cd [vegascene root folder] mkdir build cd build qmake -r -spec linux-g++ ../vegascene/vegascene.pro make Build steps - Mac: brew install qt5 cd [vegascene root folder] mkdir build cd build /usr/local/opt/qt5/bin/qmake -r ../vegascene/vegascene.pro make then you can run ./vegascene spec_file [out_file] If you want a debug build add the CONFIG+=debug option to the qmake command. Remember that vegascene executable looks for JavaScript modules in "../jsmodules", where the path is relative to the current working directory.