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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"