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