Unexpected error message in CI build log for MacOS

[ronald-jaepel]

Actual Behavior

Build log on MacOS works but prints this log:

Run cmake -E make_directory "${BUILD_DIR}"
-- Found Git: /opt/homebrew/bin/git (found version "2.47.0")
fatal: No names found, cannot describe anything.
-- Get version from file
-- CADET version: 4.4.0

Steps to Reproduce the Problem

1. Check any CI log

[sleweke]

The same message appears in the logs of win and linux builds as well.
It is caused by running the command

git describe --abbrev=0 HEAD

This should return the highest / most recent / latest version tag.

However, the repos are only checked out in shallow mode to save time and space. Hence, no tags are downloaded and this is way the command fails.

As a backup, the version is loaded from file version.txt in this case. This way, we can still have the correct version baked into the binaries (provided that version.txt is correct).

[schmoelder]

We could also checkout tags in the CI (see https://github.com/actions/checkout)

- uses: actions/checkout@v4 
  with
    # Whether to fetch tags, even if fetch-depth > 0.
    # Default: false
    fetch-tags: 'true'