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 -d .git && head=`git rev-parse --verify --short HEAD 2>/dev/null`; then
  47
  48                 # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
  49                 # it, because this version is defined in the top level Makefile.
  50                 if [ -z "`git describe --exact-match 2>/dev/null`" ]; then
  51
  52                         # If only the short version is requested, don't bother
  53                         # running further git commands
  54                         if $short; then
  55                                 echo "+"
  56                                 return
  57                         fi
  58                         # If we are past a tagged commit (like
  59                         # "v2.6.30-rc5-302-g72357d5"), we pretty print it.
  60                         if atag="`git describe 2>/dev/null`"; then
  61                                 echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
  62
  63                         # If we don't have a tag at all we print -g{commitish}.
  64                         else
  65                                 printf '%s%s' -g $head
  66                         fi
  67                 fi
  68
  69                 # Is this git on svn?
  70                 if git config --get svn-remote.svn.url >/dev/null; then
  71                         printf -- '-svn%s' "`git svn find-rev $head`"
  72                 fi
  73
  74                 # Update index only on r/w media
  75                 [ -w . ] && git update-index --refresh --unmerged > /dev/null
  76
  77                 # Check for uncommitted changes
  78                 if git diff-index --name-only HEAD | grep -v "^scripts/package" \
  79                     | read dummy; then
  80                         printf '%s' -dirty
  81                 fi
  82
  83                 # All done with git
  84                 return
  85         fi
  86
  87         # Check for mercurial and a mercurial repo.
  88         if test -d .hg && hgid=`hg id 2>/dev/null`; then
  89                 tag=`printf '%s' "$hgid" | cut -s -d' ' -f2`
  90
  91                 # Do we have an untagged version?
  92                 if [ -z "$tag" -o "$tag" = tip ]; then
  93                         id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
  94                         printf '%s%s' -hg "$id"
  95                 fi
  96
  97                 # Are there uncommitted changes?
  98                 # These are represented by + after the changeset id.
  99                 case "$hgid" in
 100                         *+|*+\ *) printf '%s' -dirty ;;
 101                 esac
 102
 103                 # All done with mercurial
 104                 return
 105         fi
 106
 107         # Check for svn and a svn repo.
 108         if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
 109                 rev=`echo $rev | awk '{print $NF}'`
 110                 printf -- '-svn%s' "$rev"
 111
 112                 # All done with svn
 113                 return
 114         fi
 115 }
 116
 117 collect_files()
 118 {
 119         local file res
 120
 121         for file; do
 122                 case "$file" in
 123                 *\~*)
 124                         continue
 125                         ;;
 126                 esac
 127                 if test -e "$file"; then
 128                         res="$res$(cat "$file")"
 129                 fi
 130         done
 131         echo "$res"
 132 }
 133
 134 if $scm_only; then
 135         if test ! -e .scmversion; then
 136                 res=$(scm_version)
 137                 echo "$res" >.scmversion
 138         fi
 139         exit
 140 fi
 141
 142 if test -e include/config/auto.conf; then
 143         . include/config/auto.conf
 144 else
 145         echo "Error: kernelrelease not valid - run 'make prepare' to update it"
 146         exit 1
 147 fi
 148
 149 # localversion* files in the build and source directory
 150 res="$(collect_files localversion*)"
 151 if test ! "$srctree" -ef .; then
 152         res="$res$(collect_files "$srctree"/localversion*)"
 153 fi
 154
 155 # CONFIG_LOCALVERSION and LOCALVERSION (if set)
 156 res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
 157
 158 # scm version string if not at a tagged commit
 159 if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
 160         # full scm version string
 161         res="$res$(scm_version)"
 162 else
 163         # append a plus sign if the repository is not in a clean
 164         # annotated or signed tagged state (as git describe only
 165         # looks at signed or annotated tags - git tag -a/-s) and
 166         # LOCALVERSION= is not specified
 167         if test "${LOCALVERSION+set}" != "set"; then
 168                 scm=$(scm_version --short)
 169                 res="$res${scm:++}"
 170         fi
 171 fi
 172
 173 echo "$res"