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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
scm_version()
{
# 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 "$(git describe --exact-match 2>/dev/null)" ]; then
# Add -g and 8 hex chars.
printf -- '-g%.8s' "$head"
fi
# 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
fi
fi
}
if [ -n "$EROFS_UTILS_VERSION" ]; then
echo "$EROFS_UTILS_VERSION"
else
echo $(head -n1 VERSION)$(scm_version)
fi
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