1#!/bin/sh 2# 3# This scripts adds local version information from the version 4# control systems git, mercurial (hg) and subversion (svn). 5# 6# If something goes wrong, send a mail the kernel build mailinglist 7# (see MAINTAINERS) and CC Nico Schottelius 8# <nico-linuxsetlocalversion -at- schottelius.org>. 9# 10# 11 12usage() { 13 echo "Usage: $0 [--save-scmversion] [srctree]" >&2 14 exit 1 15} 16 17scm_only=false 18srctree=. 19if test "$1" = "--save-scmversion"; then 20 scm_only=true 21 shift 22fi 23if test $# -gt 0; then 24 srctree=$1 25 shift 26fi 27if test $# -gt 0 -o ! -d "$srctree"; then 28 usage 29fi 30 31scm_version() 32{ 33 local short 34 short=false 35 36 cd "$srctree" 37 if test -e .scmversion; then 38 cat .scmversion 39 return 40 fi 41 if test "$1" = "--short"; then 42 short=true 43 fi 44 45 # Check for git and a git repo. 46 if test -z "$(git rev-parse --show-cdup 2>/dev/null)" && 47 head=$(git rev-parse --verify HEAD 2>/dev/null); then 48 49 # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore 50 # it, because this version is defined in the top level Makefile. 51 if [ -z "`git describe --exact-match 2>/dev/null`" ]; then 52 53 # If only the short version is requested, don't bother 54 # running further git commands 55 if $short; then 56 echo "+" 57 return 58 fi 59 # If we are past a tagged commit (like 60 # "v2.6.30-rc5-302-g72357d5"), we pretty print it. 61 # 62 # Ensure the abbreviated sha1 has exactly 12 63 # hex characters, to make the output 64 # independent of git version, local 65 # core.abbrev settings and/or total number of 66 # objects in the current repository - passing 67 # --abbrev=12 ensures a minimum of 12, and the 68 # awk substr() then picks the 'g' and first 12 69 # hex chars. 70 if atag="$(git describe --abbrev=12 2>/dev/null)"; then 71 echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),substr($(NF),0,13))}' 72 73 # If we don't have a tag at all we print -g{commitish}, 74 # again using exactly 12 hex chars. 75 else 76 head="$(echo $head | cut -c1-12)" 77 printf '%s%s' -g $head 78 fi 79 fi 80 81 # Is this git on svn? 82 if git config --get svn-remote.svn.url >/dev/null; then 83 printf -- '-svn%s' "`git svn find-rev $head`" 84 fi 85 86 # Check for uncommitted changes. 87 # First, with git-status, but --no-optional-locks is only 88 # supported in git >= 2.14, so fall back to git-diff-index if 89 # it fails. Note that git-diff-index does not refresh the 90 # index, so it may give misleading results. See 91 # git-update-index(1), git-diff-index(1), and git-status(1). 92 if { 93 git --no-optional-locks status -uno --porcelain 2>/dev/null || 94 git diff-index --name-only HEAD 95 } | grep -qvE '^(.. )?scripts/package'; then 96 printf '%s' -dirty 97 fi 98 99 # All done with git 100 return 101 fi 102 103 # Check for mercurial and a mercurial repo. 104 if test -d .hg && hgid=`hg id 2>/dev/null`; then 105 # Do we have an tagged version? If so, latesttagdistance == 1 106 if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then 107 id=`hg log -r . --template '{latesttag}'` 108 printf '%s%s' -hg "$id" 109 else 110 tag=`printf '%s' "$hgid" | cut -d' ' -f2` 111 if [ -z "$tag" -o "$tag" = tip ]; then 112 id=`printf '%s' "$hgid" | sed 's/[+ ].*//'` 113 printf '%s%s' -hg "$id" 114 fi 115 fi 116 117 # Are there uncommitted changes? 118 # These are represented by + after the changeset id. 119 case "$hgid" in 120 *+|*+\ *) printf '%s' -dirty ;; 121 esac 122 123 # All done with mercurial 124 return 125 fi 126 127 # Check for svn and a svn repo. 128 if rev=`LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'`; then 129 rev=`echo $rev | awk '{print $NF}'` 130 printf -- '-svn%s' "$rev" 131 132 # All done with svn 133 return 134 fi 135} 136 137collect_files() 138{ 139 local file res 140 141 for file; do 142 case "$file" in 143 *\~*) 144 continue 145 ;; 146 esac 147 if test -e "$file"; then 148 res="$res$(cat "$file")" 149 fi 150 done 151 echo "$res" 152} 153 154if $scm_only; then 155 if test ! -e .scmversion; then 156 res=$(scm_version) 157 echo "$res" >.scmversion 158 fi 159 exit 160fi 161 162if test -e include/config/auto.conf; then 163 . include/config/auto.conf 164else 165 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2 166 exit 1 167fi 168 169# localversion* files in the build and source directory 170res="$(collect_files localversion*)" 171if test ! "$srctree" -ef .; then 172 res="$res$(collect_files "$srctree"/localversion*)" 173fi 174 175# CONFIG_LOCALVERSION and LOCALVERSION (if set) 176res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}" 177 178# scm version string if not at a tagged commit 179if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then 180 # full scm version string 181 res="$res$(scm_version)" 182else 183 # append a plus sign if the repository is not in a clean 184 # annotated or signed tagged state (as git describe only 185 # looks at signed or annotated tags - git tag -a/-s) and 186 # LOCALVERSION= is not specified 187 if test "${LOCALVERSION+set}" != "set"; then 188 scm=$(scm_version --short) 189 res="$res${scm:++}" 190 fi 191fi 192 193echo "$res" 194