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https://github.com/systemd/systemd
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34 lines
1 KiB
Bash
Executable file
34 lines
1 KiB
Bash
Executable file
#!/usr/bin/env bash
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# SPDX-License-Identifier: LGPL-2.1-or-later
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set -u
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set -o pipefail
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dir="${1:?}"
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fallback="${2:?}"
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version_tag="${3:-}"
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if [ -n "${version_tag}" ]; then
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# If -Dversion_tag= was used, just use that without further changes.
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echo "${version_tag}"
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else
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# Check that we have either .git/ (a normal clone) or a .git file (a work-tree)
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# and that we don't get confused if a tarball is extracted in a higher-level
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# git repository.
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#
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# If the working tree has no tags (CI builds), the first git-describe will fail
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# and we fall back to project_version-commitid instead.
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c=''
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if [ -e "${dir}/.git" ]; then
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c="$(git -C "$dir" describe --abbrev=7 --dirty=^ 2>/dev/null)"
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if [ -z "$c" ]; then
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# This call might still fail with permission issues
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suffix="$(git -C "$dir" describe --always --abbrev=7 --dirty=^ 2>/dev/null)"
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[ -n "$suffix" ] && c="${fallback}-${suffix}"
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fi
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fi
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[ -z "$c" ] && c="${fallback}"
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echo "$c" | sed 's/^v//; s/-rc/~rc/'
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fi
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