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 short=false 31 32 cd "$srctree" 33 if test "$1" = "--short"; then 34 short=true 35 fi 36 37 if test -n "$(git rev-parse --show-cdup 2>/dev/null)"; then 38 return 39 fi 40 41 if ! head=$(git rev-parse --verify HEAD 2>/dev/null); then 42 return 43 fi 44 45 # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore it 46 # because this version is defined in the top level Makefile. 47 if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then 48 49 # If only the short version is requested, don't bother 50 # running further git commands 51 if $short; then 52 echo "+" 53 return 54 fi 55 # If we are past a tagged commit (like 56 # "v2.6.30-rc5-302-g72357d5"), we pretty print it. 57 if atag="$(git describe 2>/dev/null)"; then 58 echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}' 59 fi 60 61 # Add -g and exactly 12 hex chars. 62 printf '%s%s' -g "$(echo $head | cut -c1-12)" 63 fi 64 65 # Check for uncommitted changes. 66 # This script must avoid any write attempt to the source tree, which 67 # might be read-only. 68 # You cannot use 'git describe --dirty' because it tries to create 69 # .git/index.lock . 70 # First, with git-status, but --no-optional-locks is only supported in 71 # git >= 2.14, so fall back to git-diff-index if it fails. Note that 72 # git-diff-index does not refresh the index, so it may give misleading 73 # results. 74 # See git-update-index(1), git-diff-index(1), and git-status(1). 75 if { 76 git --no-optional-locks status -uno --porcelain 2>/dev/null || 77 git diff-index --name-only HEAD 78 } | read dummy; then 79 printf '%s' -dirty 80 fi 81} 82 83collect_files() 84{ 85 local file res= 86 87 for file; do 88 case "$file" in 89 *\~*) 90 continue 91 ;; 92 esac 93 if test -e "$file"; then 94 res="$res$(cat "$file")" 95 fi 96 done 97 echo "$res" 98} 99 100if ! test -e include/config/auto.conf; then 101 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2 102 exit 1 103fi 104 105if [ -z "${KERNELVERSION}" ]; then 106 echo "KERNELVERSION is not set" >&2 107 exit 1 108fi 109 110# localversion* files in the build and source directory 111file_localversion="$(collect_files localversion*)" 112if test ! "$srctree" -ef .; then 113 file_localversion="${file_localversion}$(collect_files "$srctree"/localversion*)" 114fi 115 116# version string from CONFIG_LOCALVERSION 117config_localversion=$(sed -n 's/^CONFIG_LOCALVERSION=\(.*\)$/\1/p' include/config/auto.conf) 118 119# scm version string if not at a tagged commit 120if grep -q "^CONFIG_LOCALVERSION_AUTO=y$" include/config/auto.conf; then 121 # full scm version string 122 scm_version="$(scm_version)" 123elif [ "${LOCALVERSION+set}" != "set" ]; then 124 # If the variable LOCALVERSION is not set, append a plus 125 # sign if the repository is not in a clean annotated or 126 # signed tagged state (as git describe only looks at signed 127 # or annotated tags - git tag -a/-s). 128 # 129 # If the variable LOCALVERSION is set (including being set 130 # to an empty string), we don't want to append a plus sign. 131 scm_version="$(scm_version --short)" 132fi 133 134echo "${KERNELVERSION}${file_localversion}${config_localversion}${LOCALVERSION}${scm_version}" 135