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