openafs/build-tools/git-version

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#!/bin/sh
version_file=$1
if [ -f $version_file ] ; then
git_version=`cat $version_file`
else
if which git > /dev/null; then
git_version=`git describe --abbrev=4 HEAD 2>/dev/null`
# Is the working tree dirty?
if ! git diff-index --quiet --cached HEAD --ignore-submodules || \
! git diff-files --quiet --ignore-submodules ; then
git_version="$git_version-dirty"
fi
else
git_version=UNKNOWN
fi
fi
echo "$git_version" | sed -e 's/openafs-[^-]*-//' -e 's/_/./g' | tr -d '\012'