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=$(git rev-parse --verify --short HEAD 2>/dev/null); then 49 50 # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore 51 # it, because this version is defined in the top level Makefile. 52 if [ -z "$(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 $short; then 57 echo "+" 58 return 59 fi 60 # If we are past a tagged commit (like 61 # "v2.6.30-rc5-302-g72357d5"), we pretty print it. 62 if atag="$(git describe 2>/dev/null)"; then 63 echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}' 64 65 # If we don't have a tag at all we print -g{commitish}. 66 else 67 printf '%s%s' -g $head 68 fi 69 fi 70 71 # Is this git on svn? 72 if git config --get svn-remote.svn.url >/dev/null; then 73 printf -- '-svn%s' "$(git svn find-rev $head)" 74 fi 75 76 # Check for uncommitted changes. 77 # First, with git-status, but --no-optional-locks is only 78 # supported in git >= 2.14, so fall back to git-diff-index if 79 # it fails. Note that git-diff-index does not refresh the 80 # index, so it may give misleading results. See 81 # git-update-index(1), git-diff-index(1), and git-status(1). 82 if { 83 git --no-optional-locks status -uno --porcelain 2>/dev/null || 84 git diff-index --name-only HEAD 85 } | grep -qvE '^(.. )?scripts/package'; then 86 printf '%s' -dirty 87 fi 88 89 # All done with git 90 return 91 fi 92 93 # Check for mercurial and a mercurial repo. 94 if test -d .hg && hgid=$(hg id 2>/dev/null); then 95 # Do we have an tagged version? If so, latesttagdistance == 1 96 if [ "$(hg log -r . --template '{latesttagdistance}')" = "1" ]; then 97 id=$(hg log -r . --template '{latesttag}') 98 printf '%s%s' -hg "$id" 99 else 100 tag=$(printf '%s' "$hgid" | cut -d' ' -f2) 101 if [ -z "$tag" -o "$tag" = tip ]; then 102 id=$(printf '%s' "$hgid" | sed 's/[+ ].*//') 103 printf '%s%s' -hg "$id" 104 fi 105 fi 106 107 # Are there uncommitted changes? 108 # These are represented by + after the changeset id. 109 case "$hgid" in 110 *+|*+\ *) printf '%s' -dirty ;; 111 esac 112 113 # All done with mercurial 114 return 115 fi 116 117 # Check for svn and a svn repo. 118 if rev=$(LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'); then 119 rev=$(echo $rev | awk '{print $NF}') 120 printf -- '-svn%s' "$rev" 121 122 # All done with svn 123 return 124 fi 125} 126 127collect_files() 128{ 129 local file res= 130 131 for file; do 132 case "$file" in 133 *\~*) 134 continue 135 ;; 136 esac 137 if test -e "$file"; then 138 res="$res$(cat "$file")" 139 fi 140 done 141 echo "$res" 142} 143 144if $scm_only; then 145 if test ! -e .scmversion; then 146 res=$(scm_version) 147 echo "$res" >.scmversion 148 fi 149 exit 150fi 151 152if test -e include/config/auto.conf; then 153 . include/config/auto.conf 154else 155 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2 156 exit 1 157fi 158 159# localversion* files in the build and source directory 160res="$(collect_files localversion*)" 161if test ! "$srctree" -ef .; then 162 res="$res$(collect_files "$srctree"/localversion*)" 163fi 164 165# CONFIG_LOCALVERSION and LOCALVERSION (if set) 166res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}" 167 168# scm version string if not at a tagged commit 169if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then 170 # full scm version string 171 res="$res$(scm_version)" 172else 173 # append a plus sign if the repository is not in a clean 174 # annotated or signed tagged state (as git describe only 175 # looks at signed or annotated tags - git tag -a/-s) and 176 # LOCALVERSION= is not specified 177 if test "${LOCALVERSION+set}" != "set"; then 178 scm=$(scm_version --short) 179 res="$res${scm:++}" 180 fi 181fi 182 183echo "$res" 184