CMake 4: Configuration error: `Compatibility with CMake < 3.5 has been removed from CMake.`.

[dreirund]

Ahoj,

with cmake version 4 build broke:

CMake Error at CMakeLists.txt:1 (cmake_minimum_required):
  Compatibility with CMake < 3.5 has been removed from CMake.

  Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
  to tell CMake that the project requires at least <min> but has been updated
  to work with policies introduced by <max> or earlier.

  Or, add -DCMAKE_POLICY_VERSION_MINIMUM=3.5 to try configuring anyway.


-- Configuring incomplete, errors occurred!

Workaround adding -DCMAKE_POLICY_VERSION_MINIMUM=3.5 works, but proper fix is to change the build code. (I have seen it also in other projects.)

Another project did use this solution, maybe you can get inspiration there.

Regards!