Be more clear about what future release will drop compat with CMake < 3.5
Recent CMake 3.x is complaining about:
Compatibility with CMake < 3.5 will be removed from a future version of CMake.
Since this is a breaking change, could you please ensure that the first version to break compatibility with < 3.5 is in fact CMake 4.0.0?
So far CMake has been pretty good with backwards compatibility, it would be a shame if there was a breaking change nonetheless in a future 3.x release.
A warning like
Compatibility with CMake < 3.5 will be removed in CMake 4.0
sounds less scary and more understandable than "a future version of CMake".