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#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# 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>.
#
#
usage() {
echo "Usage: $0 [--save-scmversion] [srctree] [branch] [kmi-generation]" >&2
exit 1
}
scm_only=false
srctree=.
android_release=
kmi_generation=
if test "$1" = "--save-scmversion"; then
scm_only=true
shift
fi
if test $# -gt 0; then
srctree=$1
shift
fi
if test $# -gt 0; then
# Extract the Android release version. If there is no match, then return 255
# and clear the var $android_release
android_release=`echo "$1" | sed -e '/android[0-9]\{2,\}/!{q255}; \
s/^\(android[0-9]\{2,\}\)-.*/\1/'`
if test $? -ne 0; then
android_release=
fi
shift
if test $# -gt 0; then
kmi_generation=$1
[ $(expr $kmi_generation : '^[0-9]\+$') -eq 0 ] && usage
shift
else
usage
fi
fi
if test $# -gt 0 -o ! -d "$srctree"; then
usage
fi
scm_version()
{
local short
short=false
cd "$srctree"
if test -e .scmversion; then
cat .scmversion
return
fi
if test "$1" = "--short"; then
short=true
fi
# Check for git and a git repo.
if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
head=$(git rev-parse --verify HEAD 2>/dev/null); then
if [ -n "$android_release" ] && [ -n "$kmi_generation" ]; then
printf '%s' "-$android_release-$kmi_generation"
fi
commit=$(git rev-parse --verify --short=12 HEAD)
printf '%s' "//$commit"
# Is this git on svn?
if git config --get svn-remote.svn.url >/dev/null; then
printf -- '-svn%s' "`git svn find-rev $head`"
fi
# All done with git
return
fi
# Check for mercurial and a mercurial repo.
if test -d .hg && hgid=`hg id 2>/dev/null`; then
# Do we have an tagged version? If so, latesttagdistance == 1
if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
id=`hg log -r . --template '{latesttag}'`
printf '%s%s' -hg "$id"
else
tag=`printf '%s' "$hgid" | cut -d' ' -f2`
if [ -z "$tag" -o "$tag" = tip ]; then
id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
printf '%s%s' -hg "$id"
fi
fi
# Are there uncommitted changes?
# These are represented by + after the changeset id.
case "$hgid" in
*+|*+\ *) printf '%s' -dirty ;;
esac
# All done with mercurial
return
fi
# Check for svn and a svn repo.
if rev=`LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'`; then
rev=`echo $rev | awk '{print $NF}'`
printf -- '-svn%s' "$rev"
# All done with svn
return
fi
}
collect_files()
{
local file res
for file; do
case "$file" in
*\~*)
continue
;;
esac
if test -e "$file"; then
res="$res$(cat "$file")"
fi
done
echo "$res"
}
if $scm_only; then
if test ! -e .scmversion; then
res=$(scm_version)
echo "$res" >.scmversion
fi
exit
fi
if test -e include/config/auto.conf; then
. include/config/auto.conf
else
echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
exit 1
fi
# localversion* files in the build and source directory
res="$(collect_files localversion*)"
if test ! "$srctree" -ef .; then
res="$res$(collect_files "$srctree"/localversion*)"
fi
# CONFIG_LOCALVERSION and LOCALVERSION (if set)
res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
# scm version string if not at a tagged commit
if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
# full scm version string
res="$res$(scm_version)"
fi
echo "$res"
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