2 # SPDX-License-Identifier: GPL-2.0
4 # This scripts adds local version information from the version
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>.
14 echo "Usage: $0 [--no-local] [srctree]" >&2
19 if test "$1" = "--no-local"; then
25 if test $# -gt 0; then
29 if test $# -gt 0 -o ! -d "$srctree"; then
52 if test -n "$(git rev-parse --show-cdup 2>/dev/null)"; then
56 if ! head=$(git rev-parse --verify HEAD 2>/dev/null); then
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(.*)$/\1\2/')
64 # If a localversion* file exists, and the corresponding
65 # annotated tag exists and is an ancestor of HEAD, use
66 # it. This is the case in linux-next.
67 tag=${file_localversion#-}
69 if [ -n "${tag}" ]; then
70 desc=$(git describe --match=$tag 2>/dev/null)
73 # Otherwise, if a localversion* file exists, and the tag
74 # obtained by appending it to the tag derived from
75 # KERNELVERSION exists and is an ancestor of HEAD, use
76 # it. This is e.g. the case in linux-rt.
77 if [ -z "${desc}" ] && [ -n "${file_localversion}" ]; then
78 tag="${version_tag}${file_localversion}"
79 desc=$(git describe --match=$tag 2>/dev/null)
82 # Otherwise, default to the annotated tag derived from KERNELVERSION.
83 if [ -z "${desc}" ]; then
85 desc=$(git describe --match=$tag 2>/dev/null)
88 # If we are at the tagged commit, we ignore it because the version is
90 if [ "${tag}" != "${desc}" ]; then
92 # If only the short version is requested, don't bother
93 # running further git commands
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", $(NF-1))}'
104 # Add -g and exactly 12 hex chars.
105 printf '%s%s' -g "$(echo $head | cut -c1-12)"
112 # Check for uncommitted changes.
113 # This script must avoid any write attempt to the source tree, which
114 # might be read-only.
115 # You cannot use 'git describe --dirty' because it tries to create
117 # First, with git-status, but --no-optional-locks is only supported in
118 # git >= 2.14, so fall back to git-diff-index if it fails. Note that
119 # git-diff-index does not refresh the index, so it may give misleading
121 # See git-update-index(1), git-diff-index(1), and git-status(1).
123 git --no-optional-locks status -uno --porcelain 2>/dev/null ||
124 git diff-index --name-only HEAD
140 if test -e "$file"; then
141 res="$res$(cat "$file")"
147 if [ -z "${KERNELVERSION}" ]; then
148 echo "KERNELVERSION is not set" >&2
152 # localversion* files in the build and source directory
153 file_localversion="$(collect_files localversion*)"
154 if test ! "$srctree" -ef .; then
155 file_localversion="${file_localversion}$(collect_files "$srctree"/localversion*)"
159 echo "${KERNELVERSION}$(scm_version --no-dirty)"
163 if ! test -e include/config/auto.conf; then
164 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
168 # version string from CONFIG_LOCALVERSION
169 config_localversion=$(sed -n 's/^CONFIG_LOCALVERSION=\(.*\)$/\1/p' include/config/auto.conf)
171 # scm version string if not at the kernel version tag or at the file_localversion
172 if grep -q "^CONFIG_LOCALVERSION_AUTO=y$" include/config/auto.conf; then
173 # full scm version string
174 scm_version="$(scm_version)"
175 elif [ "${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).
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="$(scm_version --short)"
186 echo "${KERNELVERSION}${file_localversion}${config_localversion}${LOCALVERSION}${scm_version}"