$ make
convert   : screensaver.xml.in -> build/screensaver.xml
bcop'ing  : build/screensaver.xml -> build/screensaver_options.h
bcop'ing  : build/screensaver.xml -> build/screensaver_options.c
schema    : build/screensaver.xml -> build/compiz-screensaver.schema
compiling : rotatingcube.cpp -> build/rotatingcube.lorotatingcube.cpp: In member function ‘virtual bool ScreenRotatingCube::enable()’:
rotatingcube.cpp:30: error: invalid conversion from ‘void (*)(CompScreen*, float*, float*, float*)’ to ‘void (*)(CompScreen*, float*, float*)’
make: *** [build/rotatingcube.lo] Error 1