Also, set CMAKE_INSTALL_PREFIX to contrib.
endif
.libprojectM: libprojectM
- (cd $</src; $(HOSTCC) CPPFLAGS="$(CPPFLAGS) cmake . -DUSE_FBO:STRING=FALSE -DUSE_FBO:BOOL=OFF -DINCLUDE-PROJECTM-LIBVISUAL:BOOL=OFF -DINCLUDE-PROJECTM-PULSEAUDIO:BOOL=OFF -DINCLUDE-PROJECTM-QT:BOOL=OFF && make install)
+ (cd $</src; $(HOSTCC) CPPFLAGS="$(CPPFLAGS)" cmake . -DUSE_FBO:STRING=FALSE -DUSE_FBO:BOOL=OFF -DINCLUDE-PROJECTM-LIBVISUAL:BOOL=OFF -DINCLUDE-PROJECTM-PULSEAUDIO:BOOL=OFF -DINCLUDE-PROJECTM-QT:BOOL=OFF -DCMAKE_INSTALL_PREFIX=$(PREFIX) && make install)
touch $@
CLEAN_FILE += .libprojectM