scripts/setlocalversion

   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
  12 usage() {
  13         echo "Usage: $0 [--save-scmversion] [srctree]" >&2
  14         exit 1
  15 }
  16
  17 scm_only=false
  18 srctree=.
  19 if test "$1" = "--save-scmversion"; then
  20         scm_only=true
  21         shift
  22 fi
  23 if test $# -gt 0; then
  24         srctree=$1
  25         shift
  26 fi
  27 if test $# -gt 0 -o ! -d "$srctree"; then
  28         usage
  29 fi
  30
  31 scm_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 --short=8 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 atag="`git describe --exact-match --abbrev=0 2>/dev/null`"; then
  52                         # Make sure we're at the tag that matches the Makefile.
  53                         # If not place the hash of the tag as well for
  54                         # v2.6.30-rc5-g314aef
  55                         if [ "x$atag" != "x$VERSION" ]; then
  56                                 # If only the short version is requested,
  57                                 # don't bother running further git commands
  58                                 if $short; then
  59                                         echo "+"
  60                                         return
  61                                 fi
  62                                 printf '%s%s' -g "`git show-ref -s --abbrev --tags $atag 2>/dev/null`"
  63                         fi
  64                 else
  65
  66                         # If only the short version is requested, don't bother
  67                         # running further git commands
  68                         if $short; then
  69                                 echo "+"
  70                                 return
  71                         fi
  72                         # If we are past a tagged commit (like
  73                         # "v2.6.30-rc5-302-g72357d5"), we pretty print it and
  74                         # include the hash of any new tag on top.
  75                         if atag="`git describe 2>/dev/null`"; then
  76                                 tag="`git describe --abbrev=0 2>/dev/null`"
  77                                 commit="`echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'`"
  78                                 printf '%s%s%s' -g "`git show-ref -s --abbrev --tags $tag 2>/dev/null`" $commit
  79                         # If we don't have a tag at all we print -g{commitish}.
  80                         else
  81                                 printf '%s%s' -g $head
  82                         fi
  83                 fi
  84
  85                 # Is this git on svn?
  86                 if git config --get svn-remote.svn.url >/dev/null; then
  87                         printf -- '-svn%s' "`git svn find-rev $head`"
  88                 fi
  89
  90                 # Check for uncommitted changes.
  91                 # First, with git-status, but --no-optional-locks is only
  92                 # supported in git >= 2.14, so fall back to git-diff-index if
  93                 # it fails. Note that git-diff-index does not refresh the
  94                 # index, so it may give misleading results. See
  95                 # git-update-index(1), git-diff-index(1), and git-status(1).
  96                 if {
  97                         git --no-optional-locks status -uno --porcelain 2>/dev/null ||
  98                         git diff-index --name-only HEAD
  99                 } | grep -qvE '^(.. )?scripts/package'; then
 100                         printf '%s' -dirty
 101                 fi
 102
 103                 # All done with git
 104                 return
 105         fi
 106
 107         # Check for mercurial and a mercurial repo.
 108         if test -d .hg && hgid=`hg id 2>/dev/null`; then
 109                 # Do we have an tagged version?  If so, latesttagdistance == 1
 110                 if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
 111                         id=`hg log -r . --template '{latesttag}'`
 112                         printf '%s%s' -hg "$id"
 113                 else
 114                         tag=`printf '%s' "$hgid" | cut -d' ' -f2`
 115                         if [ -z "$tag" -o "$tag" = tip ]; then
 116                                 id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
 117                                 printf '%s%s' -hg "$id"
 118                         fi
 119                 fi
 120
 121                 # Are there uncommitted changes?
 122                 # These are represented by + after the changeset id.
 123                 case "$hgid" in
 124                         *+|*+\ *) printf '%s' -dirty ;;
 125                 esac
 126
 127                 # All done with mercurial
 128                 return
 129         fi
 130
 131         # Check for svn and a svn repo.
 132         if rev=`LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'`; then
 133                 rev=`echo $rev | awk '{print $NF}'`
 134                 printf -- '-svn%s' "$rev"
 135
 136                 # All done with svn
 137                 return
 138         fi
 139 }
 140
 141 collect_files()
 142 {
 143         local file res
 144
 145         for file; do
 146                 case "$file" in
 147                 *\~*)
 148                         continue
 149                         ;;
 150                 esac
 151                 if test -e "$file"; then
 152                         res="$res$(cat "$file")"
 153                 fi
 154         done
 155         echo "$res"
 156 }
 157
 158 if $scm_only; then
 159         if test ! -e .scmversion; then
 160                 res=$(scm_version)
 161                 echo "$res" >.scmversion
 162         fi
 163         exit
 164 fi
 165
 166 if test -e include/config/auto.conf; then
 167         . include/config/auto.conf
 168 else
 169         echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
 170         exit 1
 171 fi
 172
 173 # localversion* files in the build and source directory
 174 res="$(collect_files localversion*)"
 175 if test ! "$srctree" -ef .; then
 176         res="$res$(collect_files "$srctree"/localversion*)"
 177 fi
 178
 179 # CONFIG_LOCALVERSION and LOCALVERSION (if set)
 180 res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
 181
 182 # scm version string if not at a tagged commit
 183 if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
 184         # full scm version string
 185         res="$res$(scm_version)"
 186 else
 187         # append a plus sign if the repository is not in a clean
 188         # annotated or signed tagged state (as git describe only
 189         # looks at signed or annotated tags - git tag -a/-s) and
 190         # LOCALVERSION= is not specified
 191         if test "${LOCALVERSION+set}" != "set"; then
 192                 scm=$(scm_version --short)
 193         fi
 194 fi
 195
 196 echo "$res"