support/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: $0 [srctree]" >&2
  14         exit 1
  15 }
  16
  17 cd "${1:-.}" || usage
  18
  19 # Check for git and a git repo.
  20 if head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
  21
  22         # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore it,
  23         # because this version is defined in the top level Makefile.
  24         if [ -z "`git describe --exact-match 2>/dev/null`" ]; then
  25
  26                 # If we are past a tagged commit (like "v2.6.30-rc5-302-g72357d5"),
  27                 # we pretty print it.
  28                 if atag="`git describe 2>/dev/null`"; then
  29                         echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
  30
  31                 # If we don't have a tag at all we print -g{commitish}.
  32                 else
  33                         printf '%s%s' -g $head
  34                 fi
  35         fi
  36
  37         # Is this git on svn?
  38         if git config --get svn-remote.svn.url >/dev/null; then
  39                 printf -- '-svn%s' "`git svn find-rev $head`"
  40         fi
  41
  42         # Update index only on r/w media
  43         [ -w . ] && git update-index --refresh --unmerged > /dev/null
  44
  45         # Check for uncommitted changes
  46         if git diff-index --name-only HEAD | grep -v "^scripts/package" \
  47             | read dummy; then
  48                 printf '%s' -dirty
  49         fi
  50
  51         # All done with git
  52         exit
  53 fi
  54
  55 # Check for mercurial and a mercurial repo.
  56 if hgid=`hg id 2>/dev/null`; then
  57         tag=`printf '%s' "$hgid" | cut -d' ' -f2`
  58
  59         # Do we have an untagged version?
  60         if [ -z "$tag" -o "$tag" = tip ]; then
  61                 id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
  62                 printf '%s%s' -hg "$id"
  63         fi
  64
  65         # Are there uncommitted changes?
  66         # These are represented by + after the changeset id.
  67         case "$hgid" in
  68                 *+|*+\ *) printf '%s' -dirty ;;
  69         esac
  70
  71         # All done with mercurial
  72         exit
  73 fi
  74
  75 # Check for svn and a svn repo.
  76 if rev=`LC_ALL=C svn info 2>/dev/null | grep '^Last Changed Rev'`; then
  77         rev=`echo $rev | awk '{print $NF}'`
  78         printf -- '-svn%s' "$rev"
  79
  80         # All done with svn
  81         exit
  82 fi