#!/bin/sh
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#
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# This scripts adds local version information from the version
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# control systems git, mercurial (hg) and subversion (svn).
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#
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# If something goes wrong, send a mail the kernel build mailinglist
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# (see MAINTAINERS) and CC Nico Schottelius
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# <nico-linuxsetlocalversion -at- schottelius.org>.
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#
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#
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usage() {
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echo "Usage: $0 [srctree]" >&2
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exit 1
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}
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cd "${1:-.}" || usage
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# Check for git and a git repo.
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if head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
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atag="`git describe 2>/dev/null`"
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# Show -g<commit> if we have no tag, or just the tag
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# otherwise.
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if [ -z "${atag}" ] ; then
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printf "%s%s" -g ${head}
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else
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printf ${atag}
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fi
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# Is this git on svn?
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if git config --get svn-remote.svn.url >/dev/null; then
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printf -- '-svn%s' "`git svn find-rev $head`"
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fi
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# Update index only on r/w media
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[ -w . ] && git update-index --refresh --unmerged > /dev/null
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# Check for uncommitted changes
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if git diff-index --name-only HEAD | grep -v "^scripts/package" \
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| read dummy; then
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printf '%s' -dirty
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fi
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# All done with git
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exit
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fi
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# Check for mercurial and a mercurial repo.
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# In the git case, 'git describe' will show the latest tag, and unless we are
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# exactly on that tag, the number of commits since then, and last commit id.
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# Mimic something similar in the Mercurial case.
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if hgid=`HGRCPATH= hg id --id --tags 2>/dev/null`; then
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tag=`printf '%s' "$hgid" | cut -d' ' -f2 --only-delimited`
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# Do we have an untagged version?
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if [ -z "$tag" -o "$tag" = tip ]; then
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# current revision is not tagged, determine latest tag
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latesttag=`HGRCPATH= hg log -r. -T '{latesttag}' 2>/dev/null`
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# In case there is more than one tag on the latest tagged commit,
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# 'latesttag' will separate them by colon (:). We'll retain this.
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# In case there is no tag at all, 'null' will be returned.
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if [ "$latesttag" = "null" ]; then
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latesttag=''
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fi
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# add the commit id
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id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
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printf '%s%s%s' "${latesttag}" -hg "$id"
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else
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# current revision is tagged, just print the tag
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printf ${tag}
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fi
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# Are there uncommitted changes?
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# These are represented by + after the changeset id.
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case "$hgid" in
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*+|*+\ *) printf '%s' -dirty ;;
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esac
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# All done with mercurial
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exit
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fi
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# Check for svn and a svn repo.
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if rev=`LC_ALL=C svn info 2>/dev/null | grep '^Last Changed Rev'`; then
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rev=`echo $rev | awk '{print $NF}'`
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printf -- '-svn%s' "$rev"
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# All done with svn
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exit
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fi
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