Root/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
12usage() {
13    echo "Usage: $0 [--save-scmversion] [srctree]" >&2
14    exit 1
15}
16
17scm_only=false
18srctree=.
19if test "$1" = "--save-scmversion"; then
20    scm_only=true
21    shift
22fi
23if test $# -gt 0; then
24    srctree=$1
25    shift
26fi
27if test $# -gt 0 -o ! -d "$srctree"; then
28    usage
29fi
30
31scm_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 $head`"
72        fi
73
74        # Check for uncommitted changes
75        if git diff-index --name-only HEAD | grep -qv "^scripts/package"; then
76            printf '%s' -dirty
77        fi
78
79        # All done with git
80        return
81    fi
82
83    # Check for mercurial and a mercurial repo.
84    if test -d .hg && hgid=`hg id 2>/dev/null`; then
85        # Do we have an tagged version? If so, latesttagdistance == 1
86        if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
87            id=`hg log -r . --template '{latesttag}'`
88            printf '%s%s' -hg "$id"
89        else
90            tag=`printf '%s' "$hgid" | cut -d' ' -f2`
91            if [ -z "$tag" -o "$tag" = tip ]; then
92                id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
93                printf '%s%s' -hg "$id"
94            fi
95        fi
96
97        # Are there uncommitted changes?
98        # These are represented by + after the changeset id.
99        case "$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=`LANG= LC_ALL= LC_MESSAGES=C 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
117collect_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
134if $scm_only; then
135    if test ! -e .scmversion; then
136        res=$(scm_version)
137        echo "$res" >.scmversion
138    fi
139    exit
140fi
141
142if test -e include/config/auto.conf; then
143    . include/config/auto.conf
144else
145    echo "Error: kernelrelease not valid - run 'make prepare' to update it"
146    exit 1
147fi
148
149# localversion* files in the build and source directory
150res="$(collect_files localversion*)"
151if test ! "$srctree" -ef .; then
152    res="$res$(collect_files "$srctree"/localversion*)"
153fi
154
155# CONFIG_LOCALVERSION and LOCALVERSION (if set)
156res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
157
158# scm version string if not at a tagged commit
159if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
160    # full scm version string
161    res="$res$(scm_version)"
162else
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
171fi
172
173echo "$res"
174

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