CMake Deprecation Warning

[jjuhl]

Hi,

I'm trying to integrate tmxlite into my SFML based project and noticed a small issue while doing so. My version of cmake is:

$ cmake --version
cmake version 3.31.6

and while building tmxlite as part of my project I get the following deprecation warning:

[cmake] Cloning into 'tmxlite-src'...
[cmake] HEAD is now at 89eaddc Merge pull request #128 from mpartel/tileset-without-map
[cmake] CMake Deprecation Warning at build/Desktop-Debug/_deps/tmxlite-src/tmxlite/CMakeLists.txt:1 (cmake_minimum_required):
[cmake]   Compatibility with CMake < 3.10 will be removed from a future version of
[cmake]   CMake.
[cmake] 
[cmake]   Update the VERSION argument <min> value.  Or, use the <min>...<max> syntax
[cmake]   to tell CMake that the project requires at least <min> but has been updated
[cmake]   to work with policies introduced by <max> or earlier.

Not an urgent issue to fix since everything still works, but with CMake 4.0 on the horizon I fear there's a fair chance that things will stop working in the near future, so perhaps it's time to update the minimum required CMake version :-)

[juliohq]

I can confirm it isn't working anymore in CMake 4.0:

CMake Error at thirdparty/tmxlite/tmxlite/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.

A workaround is to use -DCMAKE_POLICY_VERSION_MINIMUM=3.5 as suggested in the error, though it isn't ideal.

My CMake version is:

$ cmake --version
cmake version 4.0.1-dirty

[fallahn]

Thanks for the heads up! I've upped the min version number now.