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 $short; then 80 echo "+" 81 return 82 fi 83 # If we are past a tagged commit (like 84 # "v2.6.30-rc5-302-g72357d5"), we pretty print it. 85 if atag="$(git describe 2>/dev/null)"; then 86 echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}' 87 fi 88 89 # Add -g and exactly 12 hex chars. 90 printf '%s%s' -g "$(echo $head | cut -c1-12)" 91 fi 92 93 # Check for uncommitted changes. 94 # This script must avoid any write attempt to the source tree, 95 # which might be read-only. 96 # You cannot use 'git describe --dirty' because it tries to 97 # create .git/index.lock . 98 # First, with git-status, but --no-optional-locks is only 99 # supported in git >= 2.14, so fall back to git-diff-index if 100 # it fails. Note that git-diff-index does not refresh the 101 # index, so it may give misleading results. See 102 # git-update-index(1), git-diff-index(1), and git-status(1). 103 if { 104 git --no-optional-locks status -uno --porcelain 2>/dev/null || 105 git diff-index --name-only HEAD 106 } | read dummy; then 107 printf '%s' -dirty 108 fi 109 fi 110} 111 112collect_files() 113{ 114 local file res= 115 116 for file; do 117 case "$file" in 118 *\~*) 119 continue 120 ;; 121 esac 122 if test -e "$file"; then 123 res="$res$(cat "$file")" 124 fi 125 done 126 echo "$res" 127} 128 129if $scm_only; then 130 if test ! -e .scmversion; then 131 res=$(scm_version) 132 echo "$res" >.scmversion 133 fi 134 exit 135fi 136 137if test -e include/config/auto.conf; then 138 . include/config/auto.conf 139else 140 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2 141 exit 1 142fi 143 144# localversion* files in the build and source directory 145res="$(collect_files localversion*)" 146if test ! "$srctree" -ef .; then 147 res="$res$(collect_files "$srctree"/localversion*)" 148fi 149 150# CONFIG_LOCALVERSION and LOCALVERSION (if set) 151res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}" 152 153# scm version string if not at a tagged commit 154if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then 155 # full scm version string 156 res="$res$(scm_version)" 157elif [ "${LOCALVERSION+set}" != "set" ]; then 158 # If the variable LOCALVERSION is not set, append a plus 159 # sign if the repository is not in a clean annotated or 160 # signed tagged state (as git describe only looks at signed 161 # or annotated tags - git tag -a/-s). 162 # 163 # If the variable LOCALVERSION is set (including being set 164 # to an empty string), we don't want to append a plus sign. 165 scm=$(scm_version --short) 166 res="$res${scm:++}" 167fi 168 169# finally, add the abXXX number if BUILD_NUMBER is set 170if test -n "${BUILD_NUMBER}"; then 171 res="$res-ab${BUILD_NUMBER}" 172fi 173 174echo "$res" 175