I think I figured it out though:
clean_LINUX clean_BSD clean_OSX:rm -fv $(RAYLIB_RELEASE_PATH)/lib$(RAYLIB_LIB_NAME).a $(RAYLIB_RELEASE_PATH)/lib$(RAYLIB_LIB_NAME).bc $(RAYLIB_RELEASE_PATH)/lib$(RAYLIB_LIB_NAME).so*
Thanks for all the help, it means more than you think. Peter D.