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1#!/bin/sh
2# SPDX-License-Identifier: GPL-2.0
3#
4# This scripts adds local version information from the version
5# control system git.
6#
7# If something goes wrong, send a mail the kernel build mailinglist
8# (see MAINTAINERS) and CC Nico Schottelius
9# <nico-linuxsetlocalversion -at- schottelius.org>.
10#
11#
12
13usage() {
14 echo "Usage: $0 [--no-local] [srctree]" >&2
15 exit 1
16}
17
18no_local=false
19if test "$1" = "--no-local"; then
20 no_local=true
21 shift
22fi
23
24srctree=.
25if test $# -gt 0; then
26 srctree=$1
27 shift
28fi
29if test $# -gt 0 -o ! -d "$srctree"; then
30 usage
31fi
32
33scm_version()
34{
35 local short=false
36 local no_dirty=false
37 local tag
38
39 while [ $# -gt 0 ];
40 do
41 case "$1" in
42 --short)
43 short=true;;
44 --no-dirty)
45 no_dirty=true;;
46 esac
47 shift
48 done
49
50 cd "$srctree"
51
52 if test -n "$(git rev-parse --show-cdup 2>/dev/null)"; then
53 return
54 fi
55
56 if ! head=$(git rev-parse --verify HEAD 2>/dev/null); then
57 return
58 fi
59
60 # mainline kernel: 6.2.0-rc5 -> v6.2-rc5
61 # stable kernel: 6.1.7 -> v6.1.7
62 version_tag=v$(echo "${KERNELVERSION}" | sed -E 's/^([0-9]+\.[0-9]+)\.0(.*)$/\1\2/')
63
64 # If a localversion* file exists, and the corresponding
65 # annotated tag exists and is an ancestor of HEAD, use
66 # it. This is the case in linux-next.
67 tag=${file_localversion#-}
68 desc=
69 if [ -n "${tag}" ]; then
70 desc=$(git describe --match=$tag 2>/dev/null)
71 fi
72
73 # Otherwise, if a localversion* file exists, and the tag
74 # obtained by appending it to the tag derived from
75 # KERNELVERSION exists and is an ancestor of HEAD, use
76 # it. This is e.g. the case in linux-rt.
77 if [ -z "${desc}" ] && [ -n "${file_localversion}" ]; then
78 tag="${version_tag}${file_localversion}"
79 desc=$(git describe --match=$tag 2>/dev/null)
80 fi
81
82 # Otherwise, default to the annotated tag derived from KERNELVERSION.
83 if [ -z "${desc}" ]; then
84 tag="${version_tag}"
85 desc=$(git describe --match=$tag 2>/dev/null)
86 fi
87
88 # If we are at the tagged commit, we ignore it because the version is
89 # well-defined.
90 if [ "${tag}" != "${desc}" ]; then
91
92 # If only the short version is requested, don't bother
93 # running further git commands
94 if $short; then
95 echo "+"
96 return
97 fi
98 # If we are past the tagged commit, we pretty print it.
99 # (like 6.1.0-14595-g292a089d78d3)
100 if [ -n "${desc}" ]; then
101 echo "${desc}" | awk -F- '{printf("-%05d", $(NF-1))}'
102 fi
103
104 # Add -g and exactly 12 hex chars.
105 printf '%s%s' -g "$(echo $head | cut -c1-12)"
106 fi
107
108 if ${no_dirty}; then
109 return
110 fi
111
112 # Check for uncommitted changes.
113 # This script must avoid any write attempt to the source tree, which
114 # might be read-only.
115 # You cannot use 'git describe --dirty' because it tries to create
116 # .git/index.lock .
117 # First, with git-status, but --no-optional-locks is only supported in
118 # git >= 2.14, so fall back to git-diff-index if it fails. Note that
119 # git-diff-index does not refresh the index, so it may give misleading
120 # results.
121 # See git-update-index(1), git-diff-index(1), and git-status(1).
122 if {
123 git --no-optional-locks status -uno --porcelain 2>/dev/null ||
124 git diff-index --name-only HEAD
125 } | read dummy; then
126 printf '%s' -dirty
127 fi
128}
129
130collect_files()
131{
132 local file res=
133
134 for file; do
135 case "$file" in
136 *\~*)
137 continue
138 ;;
139 esac
140 if test -e "$file"; then
141 res="$res$(cat "$file")"
142 fi
143 done
144 echo "$res"
145}
146
147if [ -z "${KERNELVERSION}" ]; then
148 echo "KERNELVERSION is not set" >&2
149 exit 1
150fi
151
152# localversion* files in the build and source directory
153file_localversion="$(collect_files localversion*)"
154if test ! "$srctree" -ef .; then
155 file_localversion="${file_localversion}$(collect_files "$srctree"/localversion*)"
156fi
157
158if ${no_local}; then
159 echo "${KERNELVERSION}$(scm_version --no-dirty)"
160 exit 0
161fi
162
163if ! test -e include/config/auto.conf; then
164 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
165 exit 1
166fi
167
168# version string from CONFIG_LOCALVERSION
169config_localversion=$(sed -n 's/^CONFIG_LOCALVERSION=\(.*\)$/\1/p' include/config/auto.conf)
170
171# scm version string if not at the kernel version tag or at the file_localversion
172if grep -q "^CONFIG_LOCALVERSION_AUTO=y$" include/config/auto.conf; then
173 # full scm version string
174 scm_version="$(scm_version)"
175elif [ "${LOCALVERSION+set}" != "set" ]; then
176 # If the variable LOCALVERSION is not set, append a plus
177 # sign if the repository is not in a clean annotated or
178 # signed tagged state (as git describe only looks at signed
179 # or annotated tags - git tag -a/-s).
180 #
181 # If the variable LOCALVERSION is set (including being set
182 # to an empty string), we don't want to append a plus sign.
183 scm_version="$(scm_version --short)"
184fi
185
186echo "${KERNELVERSION}${file_localversion}${config_localversion}${LOCALVERSION}${scm_version}"
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"