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[kvmfornfv.git] / kernel / 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 "$res" >.scmversion
139         fi
140         exit
141 fi
142
143 if test -e include/config/auto.conf; then
144         . include/config/auto.conf
145 else
146         echo "Error: kernelrelease not valid - run 'make prepare' to update it"
147         exit 1
148 fi
149
150 # localversion* files in the build and source directory
151 res="$(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"