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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# SPDX-License-Identifier: GPL-2.0
3#
4# This scripts adds local version information from the version
5# control systems git, mercurial (hg) and subversion (svn).
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 [--save-scmversion] [srctree]" >&2
15 exit 1
16}
17
18scm_only=false
19srctree=.
20if test "$1" = "--save-scmversion"; then
21 scm_only=true
22 shift
23fi
24if test $# -gt 0; then
25 srctree=$1
26 shift
27fi
28if test $# -gt 0 -o ! -d "$srctree"; then
29 usage
30fi
31
32scm_version()
33{
34 local short
35 short=false
36
37 cd "$srctree"
38 if test -e .scmversion; then
39 cat .scmversion
40 return
41 fi
42 if test "$1" = "--short"; then
43 short=true
44 fi
45
46 # Check for git and a git repo.
47 if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
48 head=$(git rev-parse --verify HEAD 2>/dev/null); then
49
50 # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
51 # it, because this version is defined in the top level Makefile.
52 if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then
53
54 # If only the short version is requested, don't bother
55 # running further git commands
56 if $short; then
57 echo "+"
58 return
59 fi
60 # If we are past a tagged commit (like
61 # "v2.6.30-rc5-302-g72357d5"), we pretty print it.
62 if atag="$(git describe 2>/dev/null)"; then
63 echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}'
64 fi
65
66 # Add -g and exactly 12 hex chars.
67 printf '%s%s' -g "$(echo $head | cut -c1-12)"
68 fi
69
70 # Check for uncommitted changes.
71 # This script must avoid any write attempt to the source tree,
72 # which might be read-only.
73 # You cannot use 'git describe --dirty' because it tries to
74 # create .git/index.lock .
75 # First, with git-status, but --no-optional-locks is only
76 # supported in git >= 2.14, so fall back to git-diff-index if
77 # it fails. Note that git-diff-index does not refresh the
78 # index, so it may give misleading results. See
79 # git-update-index(1), git-diff-index(1), and git-status(1).
80 if {
81 git --no-optional-locks status -uno --porcelain 2>/dev/null ||
82 git diff-index --name-only HEAD
83 } | read dummy; then
84 printf '%s' -dirty
85 fi
86 fi
87}
88
89collect_files()
90{
91 local file res=
92
93 for file; do
94 case "$file" in
95 *\~*)
96 continue
97 ;;
98 esac
99 if test -e "$file"; then
100 res="$res$(cat "$file")"
101 fi
102 done
103 echo "$res"
104}
105
106if $scm_only; then
107 if test ! -e .scmversion; then
108 res=$(scm_version)
109 echo "$res" >.scmversion
110 fi
111 exit
112fi
113
114if ! test -e include/config/auto.conf; then
115 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
116 exit 1
117fi
118
119# localversion* files in the build and source directory
120res="$(collect_files localversion*)"
121if test ! "$srctree" -ef .; then
122 res="$res$(collect_files "$srctree"/localversion*)"
123fi
124
125# CONFIG_LOCALVERSION and LOCALVERSION (if set)
126config_localversion=$(sed -n 's/^CONFIG_LOCALVERSION=\(.*\)$/\1/p' include/config/auto.conf)
127res="${res}${config_localversion}${LOCALVERSION}"
128
129# scm version string if not at a tagged commit
130if grep -q "^CONFIG_LOCALVERSION_AUTO=y$" include/config/auto.conf; then
131 # full scm version string
132 res="$res$(scm_version)"
133elif [ "${LOCALVERSION+set}" != "set" ]; then
134 # If the variable LOCALVERSION is not set, append a plus
135 # sign if the repository is not in a clean annotated or
136 # signed tagged state (as git describe only looks at signed
137 # or annotated tags - git tag -a/-s).
138 #
139 # If the variable LOCALVERSION is set (including being set
140 # to an empty string), we don't want to append a plus sign.
141 scm=$(scm_version --short)
142 res="$res${scm:++}"
143fi
144
145echo "$res"