shore(CMake): Update minimum version required for new cmake version

[Erwsaym]

I did this changed cause since CMake 4.0.0, minimum value before 3.5 are not any longer authorized. It is still possible to add a dedicated environment variable to accept lower version. In my case, I was able to update each sub-library I use in my project, EntityX seems to be the only one CMake not updated.

Source : https://cmake.org/cmake/help/latest/release/4.0.html#deprecated-and-removed-features

Error produced :

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.

[alecthomas]

Why update the minimum version if it works on the older version?

[Erwsaym]

Hey !

Sorry to not having filled the PR description (tbh I just wanted to fork the repo to make the adaptation for myself, but it could be great to be updated in the main repo anyway)

I did this changed cause since CMake 4.0.0, minimum value before 3.5 are not any longer authorized. It is still possible to add a dedicated environment variable to accept lower version. In my case, I was able to update each sub-library I use in my project, EntityX seems to be the only one CMake not updated.

Source : https://cmake.org/cmake/help/latest/release/4.0.html#deprecated-and-removed-features

Error produced :

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.

To be more tolerent, it is possible to set a min...max version with the min the old one and max "3.5".

[alecthomas]

Aaaah, makes sense, thanks.