[cmake] Disable finding Doxygen only for CMake < 3.28

xiaoyeli / superlu

Supernodal sparse direct solver. https://portal.nersc.gov/project/sparse/superlu/

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[cmake] Disable finding Doxygen only for CMake < 3.28 #157

Closed gruenich closed 1 month ago

gruenich commented 1 month ago

This allows building the documentation without setting a flag only by running "make doc" / "ninja doc".
The currently implemented solution by 2c8ef7da153e87745f04f968eb2a995d735e64ec is a bit drastic.