Fix compilation on Linux with SFML_OPENGL_ES option #2160
Merged
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Description
Last night in #2157, I introduced without realizing some nonsense in the Window/CMakeLists.txt file.
I hoped CI would catch this kind of mistakes but there is no check with SFML_OPENGL_ES option enabled.
This PR makes it possible to build SFML on Linux with any combination of SFML_USE_DRM and SFML_OPENGL_ES as it was before #2157.
How to test this PR?
I had to disable WARNINGS_AS_ERRORS because some OpenGL ES specific parts trigger warnings, but that is a different topic.
Tested on Ubuntu and Raspbian.