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#!/bin/sh
#
# This scripts adds local version information from the version
# control systems git, mercurial (hg) and subversion (svn).
#
# If something goes wrong, send a mail the kernel build mailinglist
# (see MAINTAINERS) and CC Nico Schottelius
# <nico-linuxsetlocalversion -at- schottelius.org>.
#
#
#
# Use the following line in your configure.ac, so that $(VERSION) will
# automatically be up-to-date each time configure is run (and note that
# since configure.ac no longer includes a version string, Makefile rules
# should not depend on configure.ac for version updates).
#
# AC_INIT([GNU project],
# m4_esyscmd([build-aux/git-version-gen .tarball-version]),
# [bug-project@example])
#
case $# in
1) ;;
*) echo 1>&2 "Usage: $0 \$srcdir/.tarball-version"; exit 1;;
esac
tarball_version_file="$1"
nl='
'
# First see if there is a tarball-only version file.
if test -f $tarball_version_file
then
v=`cat $tarball_version_file` || exit 1
case $v in
*$nl*) v= ;; # reject multi-line output
esac
test -z "$v" \
&& echo "$0: WARNING: $tarball_version_file seems to be damaged" 1>&2
echo -n "$v"
exit
fi
cd "$(dirname "${tarball_version_file}")"
# Check for git and a git repo.
if head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
# If we are at a tagged commit (like "ptxdist-2010.05.0"), we
# print it here
if atag="`git describe --exact-match 2>/dev/null`"; then
echo "$atag" | awk -F- '{printf("%s", $(NF))}'
# If we are past a tagged commit (like "ptxdist-2010.03.0-130-g3c60777"),
# we pretty print it.
elif atag="`git describe 2>/dev/null`"; then
echo "$atag" | awk -F- '{printf("%s-%05d-%s", $(NF-2),$(NF-1),$(NF))}'
# If we don't have a tag at all we print ????.??.?-?-g{commitish}.
else
printf '%s%s' '????.??.?-?-g' $head
fi
# Is this git on svn?
if git config --get svn-remote.svn.url >/dev/null; then
printf -- '-svn%s' "`git svn find-rev $head`"
fi
# Update index only on r/w media
[ -w . ] && git update-index --refresh --unmerged > /dev/null
# Check for uncommitted changes
if git diff-index --name-only HEAD \
| read dummy; then
printf '%s' -dirty
fi
# All done with git
exit
fi
# Check for mercurial and a mercurial repo.
if hgid=`hg id 2>/dev/null`; then
tag=`printf '%s' "$hgid" | cut -d' ' -f2`
# Do we have an untagged version?
if [ -z "$tag" -o "$tag" = tip ]; then
id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
printf '%s%s' hg "$id"
fi
# Are there uncommitted changes?
# These are represented by + after the changeset id.
case "$hgid" in
*+|*+\ *) printf '%s' -dirty ;;
esac
# All done with mercurial
exit
fi
# Check for svn and a svn repo.
if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
rev=`echo $rev | awk '{print $NF}'`
printf -- 'svn%s' "$rev"
# All done with svn
exit
fi
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