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 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 $head`"
  88                 fi
  89
  90                 # Check for uncommitted changes
  91                 if git diff-index --name-only HEAD | grep -qv "^scripts/package"; then
  92                         printf '%s' -dirty
  93                 fi
  94
  95                 # All done with git
  96                 return
  97         fi
  98
  99         # Check for mercurial and a mercurial repo.
 100         if test -d .hg && hgid=`hg id 2>/dev/null`; then
 101                 # Do we have an tagged version?  If so, latesttagdistance == 1
 102                 if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
 103                         id=`hg log -r . --template '{latesttag}'`
 104                         printf '%s%s' -hg "$id"
 105                 else
 106                         tag=`printf '%s' "$hgid" | cut -d' ' -f2`
 107                         if [ -z "$tag" -o "$tag" = tip ]; then
 108                                 id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
 109                                 printf '%s%s' -hg "$id"
 110                         fi
 111                 fi
 112
 113                 # Are there uncommitted changes?
 114                 # These are represented by + after the changeset id.
 115                 case "$hgid" in
 116                         *+|*+\ *) printf '%s' -dirty ;;
 117                 esac
 118
 119                 # All done with mercurial
 120                 return
 121         fi
 122
 123         # Check for svn and a svn repo.
 124         if rev=`LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'`; then
 125                 rev=`echo $rev | awk '{print $NF}'`
 126                 printf -- '-svn%s' "$rev"
 127
 128                 # All done with svn
 129                 return
 130         fi
 131 }
 132
 133 collect_files()
 134 {
 135         local file res
 136
 137         for file; do
 138                 case "$file" in
 139                 *\~*)
 140                         continue
 141                         ;;
 142                 esac
 143                 if test -e "$file"; then
 144                         res="$res$(cat "$file")"
 145                 fi
 146         done
 147         echo "$res"
 148 }
 149
 150 if $scm_only; then
 151         if test ! -e .scmversion; then
 152                 res=$(scm_version)
 153                 echo "$res" >.scmversion
 154         fi
 155         exit
 156 fi
 157
 158 if test -e include/config/auto.conf; then
 159         . include/config/auto.conf
 160 else
 161         echo "Error: kernelrelease not valid - run 'make prepare' to update it"
 162         exit 1
 163 fi
 164
 165 # localversion* files in the build and source directory
 166 res="$(collect_files localversion*)"
 167 if test ! "$srctree" -ef .; then
 168         res="$res$(collect_files "$srctree"/localversion*)"
 169 fi
 170
 171 # CONFIG_LOCALVERSION and LOCALVERSION (if set)
 172 res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
 173
 174 # scm version string if not at a tagged commit
 175 if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
 176         # full scm version string
 177         res="$res$(scm_version)"
 178 else
 179         # append a plus sign if the repository is not in a clean
 180         # annotated or signed tagged state (as git describe only
 181         # looks at signed or annotated tags - git tag -a/-s) and
 182         # LOCALVERSION= is not specified
 183         if test "${LOCALVERSION+set}" != "set"; then
 184                 scm=$(scm_version --short)
 185                 res="$res${scm:++}"
 186         fi
 187 fi
 188
 189 echo "$res"