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Ahmad Samir authored
This way we get a build time warning if the var isn't defined at all, e.g. a missing check_include_files() CMake call. Also remove WITH_3RDPARTY_OPTIONAL, unused.
9b2b5115
This way we get a build time warning if the var isn't defined at all, e.g. a missing check_include_files() CMake call. Also remove WITH_3RDPARTY_OPTIONAL, unused.