blob: 26f0b5acb753251e75bc44d223b282c6c67e083e [file] [log] [blame]
# SPDX-License-Identifier: GPL-2.0
# Check for git and a git repo.
if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
head="$(git rev-parse --verify HEAD 2>/dev/null)"; then
# If we are at a tagged commit, we ignore it.
if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then
# Add -g and 8 hex chars.
printf '%s%s' -g "$(echo $head | cut -c1-8)"
# Check for uncommitted changes.
# This script must avoid any write attempt to the source tree,
# which might be read-only.
# You cannot use 'git describe --dirty' because it tries to
# create .git/index.lock .
# First, with git-status, but --no-optional-locks is only
# supported in git >= 2.14, so fall back to git-diff-index if
# it fails. Note that git-diff-index does not refresh the
# index, so it may give misleading results. See
# git-update-index(1), git-diff-index(1), and git-status(1).
if {
git --no-optional-locks status -uno --porcelain 2>/dev/null ||
git diff-index --name-only HEAD
} | read dummy; then
printf '%s' -dirty
echo $(sed -n '1p' VERSION | tr -d '\n')$(scm_version)