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 $head`"
72        fi
73
74        # Update index only on r/w media
75        [ -w . ] && git update-index --refresh --unmerged > /dev/null
76
77        # Check for uncommitted changes
78        if git diff-index --name-only HEAD | grep -v "^scripts/package" \
79            | read dummy; then
80            printf '%s' -dirty
81        fi
82
83        # All done with git
84        return
85    fi
86
87    # Check for mercurial and a mercurial repo.
88    if test -d .hg && hgid=`hg id 2>/dev/null`; then
89        # Do we have an tagged version? If so, latesttagdistance == 1
90        if [ "`hg log -r . --template '{latesttagdistance}'`" == "1" ]; then
91            id=`hg log -r . --template '{latesttag}'`
92            printf '%s%s' -hg "$id"
93        else
94            tag=`printf '%s' "$hgid" | cut -d' ' -f2`
95            if [ -z "$tag" -o "$tag" = tip ]; then
96                id=`printf '%s' "$hgid" | sed 's/[+ ].*//'`
97                printf '%s%s' -hg "$id"
98            fi
99        fi
100
101        # Are there uncommitted changes?
102        # These are represented by + after the changeset id.
103        case "$hgid" in
104            *+|*+\ *) printf '%s' -dirty ;;
105        esac
106
107        # All done with mercurial
108        return
109    fi
110
111    # Check for svn and a svn repo.
112    if rev=`svn info 2>/dev/null | grep '^Last Changed Rev'`; then
113        rev=`echo $rev | awk '{print $NF}'`
114        printf -- '-svn%s' "$rev"
115
116        # All done with svn
117        return
118    fi
119}
120
121collect_files()
122{
123    local file res
124
125    for file; do
126        case "$file" in
127        *\~*)
128            continue
129            ;;
130        esac
131        if test -e "$file"; then
132            res="$res$(cat "$file")"
133        fi
134    done
135    echo "$res"
136}
137
138if $scm_only; then
139    if test ! -e .scmversion; then
140        res=$(scm_version)
141        echo "$res" >.scmversion
142    fi
143    exit
144fi
145
146if test -e include/config/auto.conf; then
147    . include/config/auto.conf
148else
149    echo "Error: kernelrelease not valid - run 'make prepare' to update it"
150    exit 1
151fi
152
153# localversion* files in the build and source directory
154res="$(collect_files localversion*)"
155if test ! "$srctree" -ef .; then
156    res="$res$(collect_files "$srctree"/localversion*)"
157fi
158
159# CONFIG_LOCALVERSION and LOCALVERSION (if set)
160res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
161
162# scm version string if not at a tagged commit
163if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
164    # full scm version string
165    res="$res$(scm_version)"
166else
167    # append a plus sign if the repository is not in a clean
168    # annotated or signed tagged state (as git describe only
169    # looks at signed or annotated tags - git tag -a/-s) and
170    # LOCALVERSION= is not specified
171    if test "${LOCALVERSION+set}" != "set"; then
172        scm=$(scm_version --short)
173        res="$res${scm:++}"
174    fi
175fi
176
177echo "$res"
178

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