1#!/bin/sh 2# SPDX-License-Identifier: GPL-2.0 3# 4# This scripts adds local version information from the version 5# control systems git, mercurial (hg) and subversion (svn). 6# 7# If something goes wrong, send a mail the kernel build mailinglist 8# (see MAINTAINERS) and CC Nico Schottelius 9# <nico-linuxsetlocalversion -at- schottelius.org>. 10# 11# 12 13usage() { 14 echo "Usage: $0 [--save-scmversion] [srctree] [branch] [kmi-generation]" >&2 15 exit 1 16} 17 18scm_only=false 19srctree=. 20android_release= 21kmi_generation= 22if test "$1" = "--save-scmversion"; then 23 scm_only=true 24 shift 25fi 26if test $# -gt 0; then 27 srctree=$1 28 shift 29fi 30if test $# -gt 0; then 31 # Extract the Android release version. If there is no match, then return 255 32 # and clear the var $android_release 33 android_release=`echo "$1" | sed -e '/android[0-9]\{2,\}/!{q255}; \ 34 s/^\(android[0-9]\{2,\}\)-.*/\1/'` 35 if test $? -ne 0; then 36 android_release= 37 fi 38 shift 39 40 if test $# -gt 0; then 41 kmi_generation=$1 42 [ $(expr $kmi_generation : '^[0-9]\+$') -eq 0 ] && usage 43 shift 44 fi 45fi 46if test $# -gt 0 -o ! -d "$srctree"; then 47 usage 48fi 49 50scm_version() 51{ 52 local short 53 short=false 54 55 cd "$srctree" 56 if test -e .scmversion; then 57 cat .scmversion 58 return 59 fi 60 if test "$1" = "--short"; then 61 short=true 62 fi 63 64 # Check for git and a git repo. 65 if head=$(git rev-parse --verify HEAD 2>/dev/null); then 66 67 if [ -n "$android_release" ] && [ -n "$kmi_generation" ]; then 68 printf '%s' "-$android_release-$kmi_generation" 69 elif [ -n "$android_release" ]; then 70 printf '%s' "-$android_release" 71 fi 72 73 # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore 74 # it, because this version is defined in the top level Makefile. 75 if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then 76 77 # If only the short version is requested, don't bother 78 # running further git commands 79 if $short; then 80 echo "+" 81 return 82 fi 83 # If we are past a tagged commit (like 84 # "v2.6.30-rc5-302-g72357d5"), we pretty print it. 85 # 86 # Ensure the abbreviated sha1 has exactly 12 87 # hex characters, to make the output 88 # independent of git version, local 89 # core.abbrev settings and/or total number of 90 # objects in the current repository - passing 91 # --abbrev=12 ensures a minimum of 12, and the 92 # awk substr() then picks the 'g' and first 12 93 # hex chars. 94 if atag="$(git describe --abbrev=12 2>/dev/null)"; then 95 echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),substr($(NF),0,13))}' 96 97 # If we don't have a tag at all we print -g{commitish}, 98 # again using exactly 12 hex chars. 99 else 100 head="$(echo $head | cut -c1-12)" 101 printf '%s%s' -g $head 102 fi 103 fi 104 105 # Is this git on svn? 106 if git config --get svn-remote.svn.url >/dev/null; then 107 printf -- '-svn%s' "$(git svn find-rev $head)" 108 fi 109 110 # Check for uncommitted changes. 111 # First, with git-status, but --no-optional-locks is only 112 # supported in git >= 2.14, so fall back to git-diff-index if 113 # it fails. Note that git-diff-index does not refresh the 114 # index, so it may give misleading results. See 115 # git-update-index(1), git-diff-index(1), and git-status(1). 116 if { 117 git --no-optional-locks status -uno --porcelain 2>/dev/null || 118 git diff-index --name-only HEAD 119 } | grep -qvE '^(.. )?scripts/package'; then 120 printf '%s' -dirty 121 fi 122 123 # All done with git 124 return 125 fi 126 127 # Check for mercurial and a mercurial repo. 128 if hgid=$(hg id 2>/dev/null); then 129 # Do we have an tagged version? If so, latesttagdistance == 1 130 if [ "$(hg log -r . --template '{latesttagdistance}')" = "1" ]; then 131 id=$(hg log -r . --template '{latesttag}') 132 printf '%s%s' -hg "$id" 133 else 134 tag=$(printf '%s' "$hgid" | cut -d' ' -f2) 135 if [ -z "$tag" -o "$tag" = tip ]; then 136 id=$(printf '%s' "$hgid" | sed 's/[+ ].*//') 137 printf '%s%s' -hg "$id" 138 fi 139 fi 140 141 # Are there uncommitted changes? 142 # These are represented by + after the changeset id. 143 case "$hgid" in 144 *+|*+\ *) printf '%s' -dirty ;; 145 esac 146 147 # All done with mercurial 148 return 149 fi 150 151 # Check for svn and a svn repo. 152 if rev=$(LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'); then 153 rev=$(echo $rev | awk '{print $NF}') 154 printf -- '-svn%s' "$rev" 155 156 # All done with svn 157 return 158 fi 159} 160 161collect_files() 162{ 163 local file res= 164 165 for file; do 166 case "$file" in 167 *\~*) 168 continue 169 ;; 170 esac 171 if test -e "$file"; then 172 res="$res$(cat "$file")" 173 fi 174 done 175 echo "$res" 176} 177 178if $scm_only; then 179 if test ! -e .scmversion; then 180 res=$(scm_version) 181 echo "$res" >.scmversion 182 fi 183 exit 184fi 185 186if test -e include/config/auto.conf; then 187 . include/config/auto.conf 188else 189 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2 190 exit 1 191fi 192 193# localversion* files in the build and source directory 194res="$(collect_files localversion*)" 195if test ! "$srctree" -ef .; then 196 res="$res$(collect_files "$srctree"/localversion*)" 197fi 198 199# CONFIG_LOCALVERSION and LOCALVERSION (if set) 200res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}" 201 202# scm version string if not at a tagged commit 203if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then 204 # full scm version string 205 res="$res$(scm_version)" 206else 207 # append a plus sign if the repository is not in a clean 208 # annotated or signed tagged state (as git describe only 209 # looks at signed or annotated tags - git tag -a/-s) and 210 # LOCALVERSION= is not specified 211 if test "${LOCALVERSION+set}" != "set"; then 212 scm=$(scm_version --short) 213 res="$res${scm:++}" 214 fi 215fi 216 217echo "$res" 218