Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
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 [srctree]" >&2
15 exit 1
16}
17
18srctree=.
19if test $# -gt 0; then
20 srctree=$1
21 shift
22fi
23if test $# -gt 0 -o ! -d "$srctree"; then
24 usage
25fi
26
27scm_version()
28{
29 local short
30 local tag
31 short=false
32
33 cd "$srctree"
34 if test "$1" = "--short"; then
35 short=true
36 fi
37
38 if test -n "$(git rev-parse --show-cdup 2>/dev/null)"; then
39 return
40 fi
41
42 if ! head=$(git rev-parse --verify HEAD 2>/dev/null); then
43 return
44 fi
45
46 # If a localversion*' file and the corresponding annotated tag exist,
47 # use it. This is the case in linux-next.
48 tag=${file_localversion#-}
49 tag=$(git describe --exact-match --match=$tag $tag 2>/dev/null)
50
51 # Otherwise, default to the annotated tag derived from KERNELVERSION.
52 # mainline kernel: 6.2.0-rc5 -> v6.2-rc5
53 # stable kernel: 6.1.7 -> v6.1.7
54 if [ -z "${tag}" ]; then
55 tag=v$(echo "${KERNELVERSION}" | sed -E 's/^([0-9]+\.[0-9]+)\.0(.*)$/\1\2/')
56 fi
57
58 # If we are at the tagged commit, we ignore it because the version is
59 # well-defined.
60 if [ -z "$(git describe --exact-match --match=$tag 2>/dev/null)" ]; then
61
62 # If only the short version is requested, don't bother
63 # running further git commands
64 if $short; then
65 echo "+"
66 return
67 fi
68 # If we are past the tagged commit, we pretty print it.
69 # (like 6.1.0-14595-g292a089d78d3)
70 if atag="$(git describe --match=$tag 2>/dev/null)"; then
71 echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}'
72 fi
73
74 # Add -g and exactly 12 hex chars.
75 printf '%s%s' -g "$(echo $head | cut -c1-12)"
76 fi
77
78 # Check for uncommitted changes.
79 # This script must avoid any write attempt to the source tree, which
80 # might be read-only.
81 # You cannot use 'git describe --dirty' because it tries to create
82 # .git/index.lock .
83 # First, with git-status, but --no-optional-locks is only supported in
84 # git >= 2.14, so fall back to git-diff-index if it fails. Note that
85 # git-diff-index does not refresh the index, so it may give misleading
86 # results.
87 # See git-update-index(1), git-diff-index(1), and git-status(1).
88 if {
89 git --no-optional-locks status -uno --porcelain 2>/dev/null ||
90 git diff-index --name-only HEAD
91 } | read dummy; then
92 printf '%s' -dirty
93 fi
94}
95
96collect_files()
97{
98 local file res=
99
100 for file; do
101 case "$file" in
102 *\~*)
103 continue
104 ;;
105 esac
106 if test -e "$file"; then
107 res="$res$(cat "$file")"
108 fi
109 done
110 echo "$res"
111}
112
113if ! test -e include/config/auto.conf; then
114 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
115 exit 1
116fi
117
118if [ -z "${KERNELVERSION}" ]; then
119 echo "KERNELVERSION is not set" >&2
120 exit 1
121fi
122
123# localversion* files in the build and source directory
124file_localversion="$(collect_files localversion*)"
125if test ! "$srctree" -ef .; then
126 file_localversion="${file_localversion}$(collect_files "$srctree"/localversion*)"
127fi
128
129# version string from CONFIG_LOCALVERSION
130config_localversion=$(sed -n 's/^CONFIG_LOCALVERSION=\(.*\)$/\1/p' include/config/auto.conf)
131
132# scm version string if not at the kernel version tag or at the file_localversion
133if grep -q "^CONFIG_LOCALVERSION_AUTO=y$" include/config/auto.conf; then
134 # full scm version string
135 scm_version="$(scm_version)"
136elif [ "${LOCALVERSION+set}" != "set" ]; then
137 # If the variable LOCALVERSION is not set, append a plus
138 # sign if the repository is not in a clean annotated or
139 # signed tagged state (as git describe only looks at signed
140 # or annotated tags - git tag -a/-s).
141 #
142 # If the variable LOCALVERSION is set (including being set
143 # to an empty string), we don't want to append a plus sign.
144 scm_version="$(scm_version --short)"
145fi
146
147echo "${KERNELVERSION}${file_localversion}${config_localversion}${LOCALVERSION}${scm_version}"