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#! /bin/bash
#
# version.sh: create a version string for use by configure.ac
version=
datefmt='%Y%m%d'
export GIT_DIR=$(basename $0)/.git/
if head=$(git rev-parse --short=8 --verify HEAD 2>/dev/null); then
suffix=''
# Add a '-dirty' suffix for uncommitted changes.
if git diff-index HEAD | read dummy; then
suffix=-dirty
fi
if tag=$(git describe --tags --exact-match 2>/dev/null); then
# use a tag; remove any 'v' prefix from v<VERSION> tags
tag=${tag#v}
version=$(printf "%s%s" ${tag} ${suffix})
else
# Use the git commit revision for the package version, and add
# a date prefix for easy comparisons.
date=$(git log --pretty=format:"%ct" -1 HEAD)
version=$(printf "%($datefmt)T-g%s%s" ${date} ${head} ${suffix})
fi
else
# Default to current date and time.
version="$(date +dev-$datefmt)"
fi
echo $version
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