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Linux/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 "$res" >.scmversion
139         fi
140         exit
141 fi
142 
143 if test -e include/config/auto.conf; then
144         . include/config/auto.conf
145 else
146         echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
147         exit 1
148 fi
149 
150 # localversion* files in the build and source directory
151 res="$(collect_files localversion*)"
152 if test ! "$srctree" -ef .; then
153         res="$res$(collect_files "$srctree"/localversion*)"
154 fi
155 
156 # CONFIG_LOCALVERSION and LOCALVERSION (if set)
157 res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
158 
159 # scm version string if not at a tagged commit
160 if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
161         # full scm version string
162         res="$res$(scm_version)"
163 else
164         # append a plus sign if the repository is not in a clean
165         # annotated or signed tagged state (as git describe only
166         # looks at signed or annotated tags - git tag -a/-s) and
167         # LOCALVERSION= is not specified
168         if test "${LOCALVERSION+set}" != "set"; then
169                 scm=$(scm_version --short)
170                 res="$res${scm:++}"
171         fi
172 fi
173 
174 echo "$res"

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