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 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 $short; then
  56                                 echo "+"
  57                                 return
  58                         fi
  59                         # If we are past a tagged commit (like
  60                         # "v2.6.30-rc5-302-g72357d5"), we pretty print it.
  61                         if atag="`git describe 2>/dev/null`"; then
  62                                 echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
  63
  64                         # If we don't have a tag at all we print -g{commitish}.
  65                         else
  66                                 printf '%s%s' -g $head
  67                         fi
  68                 fi
  69
  70                 # Is this git on svn?
  71                 if git config --get svn-remote.svn.url >/dev/null; then
  72                         printf -- '-svn%s' "`git svn find-rev $head`"
  73                 fi
  74
  75                 # Check for uncommitted changes
  76                 if git diff-index --name-only HEAD | grep -qv "^scripts/package"; then
  77                         printf '%s' -dirty
  78                 fi
  79
  80                 # All done with git
  81                 return
  82         fi
  83
  84         # Check for mercurial and a mercurial repo.
  85         if test -d .hg && hgid=`hg id 2>/dev/null`; then
  86                 # Do we have an tagged version?  If so, latesttagdistance == 1
  87                 if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
  88                         id=`hg log -r . --template '{latesttag}'`
  89                         printf '%s%s' -hg "$id"
  90                 else
  91                         tag=`printf '%s' "$hgid" | cut -d' ' -f2`
  92                         if [ -z "$tag" -o "$tag" = tip ]; then
  93                                 id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
  94                                 printf '%s%s' -hg "$id"
  95                         fi
  96                 fi
  97
  98                 # Are there uncommitted changes?
  99                 # These are represented by + after the changeset id.
 100                 case "$hgid" in
 101                         *+|*+\ *) printf '%s' -dirty ;;
 102                 esac
 103
 104                 # All done with mercurial
 105                 return
 106         fi
 107
 108         # Check for svn and a svn repo.
 109         if rev=`LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'`; then
 110                 rev=`echo $rev | awk '{print $NF}'`
 111                 printf -- '-svn%s' "$rev"
 112
 113                 # All done with svn
 114                 return
 115         fi
 116 }
 117
 118 collect_files()
 119 {
 120         local file res
 121
 122         for file; do
 123                 case "$file" in
 124                 *\~*)
 125                         continue
 126                         ;;
 127                 esac
 128                 if test -e "$file"; then
 129                         res="$res$(cat "$file")"
 130                 fi
 131         done
 132         echo "$res"
 133 }
 134
 135 if $scm_only; then
 136         if test ! -e .scmversion; then
 137                 res=$(scm_version)
 138                 echo "$res" >.scmversion
 139         fi
 140         exit
 141 fi
 142
 143 if test -e include/config/auto.conf; then
 144         # We are interested only in CONFIG_LOCALVERSION and
 145         # CONFIG_LOCALVERSION_AUTO, so extract these in a safe
 146         # way (i.e. w/o sourcing auto.conf)
 147         CONFIG_LOCALVERSION=`cat include/config/auto.conf | awk -F '=' '/^CONFIG_LOCALVERSION=/ {print $2}'`
 148         CONFIG_LOCALVERSION_AUTO=`cat include/config/auto.conf | awk -F '=' '/^CONFIG_LOCALVERSION_AUTO=/ {print $2}'`
 149 else
 150         echo "Error: kernelrelease not valid - run 'make prepare' to update it"
 151         exit 1
 152 fi
 153
 154 # localversion* files in the build and source directory
 155 res="$(collect_files localversion*)"
 156 if test ! "$srctree" -ef .; then
 157         res="$res$(collect_files "$srctree"/localversion*)"
 158 fi
 159
 160 # CONFIG_LOCALVERSION and LOCALVERSION (if set)
 161 res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
 162
 163 # scm version string if not at a tagged commit
 164 if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
 165         # full scm version string
 166         res="$res$(scm_version)"
 167 else
 168         # append a plus sign if the repository is not in a clean
 169         # annotated or signed tagged state (as git describe only
 170         # looks at signed or annotated tags - git tag -a/-s) and
 171         # LOCALVERSION= is not specified
 172         if test "${LOCALVERSION+set}" != "set"; then
 173                 scm=$(scm_version --short)
 174                 res="$res${scm:++}"
 175         fi
 176 fi
 177
 178 echo "$res"