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systemd/tools/meson-vcs-tag.sh
Jörg Thalheim ff12a7954c treewide: more portable bash shebangs
As in 2a5fcfae02
and in 3e67e5c992
using /usr/bin/env allows bash to be looked up in PATH
rather than being hard-coded.

As with the previous changes the same arguments apply
- distributions have scripts to rewrite shebangs on installation and
  they know what locations to rely on.
- For tests/compilation we should rather rely on the user to have setup
  there PATH correctly.

In particular this makes testing from git easier on NixOS where do not provide
/bin/bash to improve compose-ability.
2020-03-05 17:27:07 +01:00

23 lines
623 B
Bash
Executable File

#!/usr/bin/env bash
set -eu
set -o pipefail
dir="$1"
tag="$2"
fallback="$3"
if [ -n "$tag" ]; then
echo "$tag"
exit 0
fi
# Apparently git describe has a bug where it always considers the work-tree
# dirty when invoked with --git-dir (even though 'git status' is happy). Work
# around this issue by cd-ing to the source directory.
cd "$dir"
# Check that we have either .git/ (a normal clone) or a .git file (a work-tree)
# and that we don't get confused if a tarball is extracted in a higher-level
# git repository.
[ -e .git ] && git describe --abbrev=7 --dirty=+ 2>/dev/null | sed 's/^v//' || echo "$fallback"