-find_package(OpenGL REQUIRED)
-find_package(GLUT REQUIRED)
-include_directories( ${OPENGL_INCLUDE_DIRS} ${GLUT_INCLUDE_DIRS} ../ )
-add_library(lat_culooks culooks.cpp culooks_cube.cpp culooks_drawing.cpp)
-target_link_libraries(lat_culooks ${OPENGL_LIBRARIES} ${GLUT_LIBRARY} pthread)
+find_package(OpenGL)
+find_package(GLUT)
+if (OPENGL_FOUND AND GLUT_FOUND)
+ include_directories( ${OPENGL_INCLUDE_DIRS} ${GLUT_INCLUDE_DIRS} ../ )
+ add_library(lat_culooks culooks.cpp culooks_cube.cpp culooks_drawing.cpp)
+ target_link_libraries(lat_culooks ${OPENGL_LIBRARIES} ${GLUT_LIBRARY} pthread)
+ add_executable(culooks_test culooks_test.cpp)
+ target_link_libraries(culooks_test lat_culooks)
+endif ()