How do I add OpenGL to a project using CMake? -


i followed documentation (https://cmake.org/cmake/help/v3.0/module/findopengl.html) , wrote code below in cmakelists.txt...

if(not opengl_found)     message("there no opengl!") endif()

...to try figure out how add opengl project using cmake. message keeps popping means system doesn't have opengl. how add system?


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