scripts/setlocalversion

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