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 [srctree]" >&2 15 exit 1 16} 17 18srctree=. 19if test $# -gt 0; then 20 srctree=$1 21 shift 22fi 23if test $# -gt 0 -o ! -d "$srctree"; then 24 usage 25fi 26 27scm_version() 28{ 29 local short 30 local tag 31 short=false 32 33 cd "$srctree" 34 if test "$1" = "--short"; then 35 short=true 36 fi 37 38 if test -n "$(git rev-parse --show-cdup 2>/dev/null)"; then 39 return 40 fi 41 42 if ! head=$(git rev-parse --verify HEAD 2>/dev/null); then 43 return 44 fi 45 46 # If a localversion*' file and the corresponding annotated tag exist, 47 # use it. This is the case in linux-next. 48 tag=${file_localversion#-} 49 tag=$(git describe --exact-match --match=$tag $tag 2>/dev/null) 50 51 # Otherwise, default to the annotated tag derived from KERNELVERSION. 52 # mainline kernel: 6.2.0-rc5 -> v6.2-rc5 53 # stable kernel: 6.1.7 -> v6.1.7 54 if [ -z "${tag}" ]; then 55 tag=v$(echo "${KERNELVERSION}" | sed -E 's/^([0-9]+\.[0-9]+)\.0(.*)$/\1\2/') 56 fi 57 58 # If we are at the tagged commit, we ignore it because the version is 59 # well-defined. 60 if [ -z "$(git describe --exact-match --match=$tag 2>/dev/null)" ]; then 61 62 # If only the short version is requested, don't bother 63 # running further git commands 64 if $short; then 65 echo "+" 66 return 67 fi 68 # If we are past the tagged commit, we pretty print it. 69 # (like 6.1.0-14595-g292a089d78d3) 70 if atag="$(git describe --match=$tag 2>/dev/null)"; then 71 echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}' 72 fi 73 74 # Add -g and exactly 12 hex chars. 75 printf '%s%s' -g "$(echo $head | cut -c1-12)" 76 fi 77 78 # Check for uncommitted changes. 79 # This script must avoid any write attempt to the source tree, which 80 # might be read-only. 81 # You cannot use 'git describe --dirty' because it tries to create 82 # .git/index.lock . 83 # First, with git-status, but --no-optional-locks is only supported in 84 # git >= 2.14, so fall back to git-diff-index if it fails. Note that 85 # git-diff-index does not refresh the index, so it may give misleading 86 # results. 87 # See git-update-index(1), git-diff-index(1), and git-status(1). 88 if { 89 git --no-optional-locks status -uno --porcelain 2>/dev/null || 90 git diff-index --name-only HEAD 91 } | read dummy; then 92 printf '%s' -dirty 93 fi 94} 95 96collect_files() 97{ 98 local file res= 99 100 for file; do 101 case "$file" in 102 *\~*) 103 continue 104 ;; 105 esac 106 if test -e "$file"; then 107 res="$res$(cat "$file")" 108 fi 109 done 110 echo "$res" 111} 112 113if ! test -e include/config/auto.conf; then 114 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2 115 exit 1 116fi 117 118if [ -z "${KERNELVERSION}" ]; then 119 echo "KERNELVERSION is not set" >&2 120 exit 1 121fi 122 123# localversion* files in the build and source directory 124file_localversion="$(collect_files localversion*)" 125if test ! "$srctree" -ef .; then 126 file_localversion="${file_localversion}$(collect_files "$srctree"/localversion*)" 127fi 128 129# version string from CONFIG_LOCALVERSION 130config_localversion=$(sed -n 's/^CONFIG_LOCALVERSION=\(.*\)$/\1/p' include/config/auto.conf) 131 132# scm version string if not at the kernel version tag or at the file_localversion 133if grep -q "^CONFIG_LOCALVERSION_AUTO=y$" include/config/auto.conf; then 134 # full scm version string 135 scm_version="$(scm_version)" 136elif [ "${LOCALVERSION+set}" != "set" ]; then 137 # If the variable LOCALVERSION is not set, append a plus 138 # sign if the repository is not in a clean annotated or 139 # signed tagged state (as git describe only looks at signed 140 # or annotated tags - git tag -a/-s). 141 # 142 # If the variable LOCALVERSION is set (including being set 143 # to an empty string), we don't want to append a plus sign. 144 scm_version="$(scm_version --short)" 145fi 146 147echo "${KERNELVERSION}${file_localversion}${config_localversion}${LOCALVERSION}${scm_version}" 148