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[jwrober]

This commit establishes the basics of getting some status from git and using that information when configuring and compiling freeciv21. Does not support the tagged tarball at this point. Right now this assumes you have a working repository and git installed.

Eventually closes #444

[jwrober]

At this point I think this PR is close to ready. Need to figure out how to handle if git is not installed and there is no repository to query (effectively a person is compiling from a tarball). If there was a way for the tarball generator to create a file with two values in it, then I could have CMake look that data up as a fall back.

[lmoureaux]

At this point I think this PR is close to ready. Need to figure out how to handle if git is not installed and there is no repository to query (effectively a person is compiling from a tarball). If there was a way for the tarball generator to create a file with two values in it, then I could have CMake look that data up as a fall back.

Have a look at https://git-scm.com/docs/gitattributes#_export_subst

[lmoureaux]

In order to test this, could you make a new branch in your fork and create a release there?

[jwrober]

One the tests complete, I think this PR is ready to merge. Only "issue" per se is the duplicate of the source tarball and zip at release time. We can point users to the defined assets in the release notes.

[lmoureaux]

Thought of yet another edge case 🔢
Will hopefully be easy.

[lmoureaux]

Let's polish it once it hurts someone