2 # SPDX-License-Identifier: GPL-2.0
4 # This scripts adds local version information from the version
5 # control systems git, mercurial (hg) and subversion (svn).
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 [srctree]" >&2
19 if test $# -gt 0; then
23 if test $# -gt 0 -o ! -d "$srctree"; then
33 if test "$1" = "--short"; then
37 if test -n "$(git rev-parse --show-cdup 2>/dev/null)"; then
41 if ! head=$(git rev-parse --verify HEAD 2>/dev/null); then
45 # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore it
46 # because this version is defined in the top level Makefile.
47 if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then
49 # If only the short version is requested, don't bother
50 # running further git commands
55 # If we are past a tagged commit (like
56 # "v2.6.30-rc5-302-g72357d5"), we pretty print it.
57 if atag="$(git describe 2>/dev/null)"; then
58 echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}'
61 # Add -g and exactly 12 hex chars.
62 printf '%s%s' -g "$(echo $head | cut -c1-12)"
65 # Check for uncommitted changes.
66 # This script must avoid any write attempt to the source tree, which
68 # You cannot use 'git describe --dirty' because it tries to create
70 # First, with git-status, but --no-optional-locks is only supported in
71 # git >= 2.14, so fall back to git-diff-index if it fails. Note that
72 # git-diff-index does not refresh the index, so it may give misleading
74 # See git-update-index(1), git-diff-index(1), and git-status(1).
76 git --no-optional-locks status -uno --porcelain 2>/dev/null ||
77 git diff-index --name-only HEAD
93 if test -e "$file"; then
94 res="$res$(cat "$file")"
100 if ! test -e include/config/auto.conf; then
101 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
105 if [ -z "${KERNELVERSION}" ]; then
106 echo "KERNELVERSION is not set" >&2
110 # localversion* files in the build and source directory
111 file_localversion="$(collect_files localversion*)"
112 if test ! "$srctree" -ef .; then
113 file_localversion="${file_localversion}$(collect_files "$srctree"/localversion*)"
116 # version string from CONFIG_LOCALVERSION
117 config_localversion=$(sed -n 's/^CONFIG_LOCALVERSION=\(.*\)$/\1/p' include/config/auto.conf)
119 # scm version string if not at a tagged commit
120 if grep -q "^CONFIG_LOCALVERSION_AUTO=y$" include/config/auto.conf; then
121 # full scm version string
122 scm_version="$(scm_version)"
123 elif [ "${LOCALVERSION+set}" != "set" ]; then
124 # If the variable LOCALVERSION is not set, append a plus
125 # sign if the repository is not in a clean annotated or
126 # signed tagged state (as git describe only looks at signed
127 # or annotated tags - git tag -a/-s).
129 # If the variable LOCALVERSION is set (including being set
130 # to an empty string), we don't want to append a plus sign.
131 scm_version="$(scm_version --short)"
134 echo "${KERNELVERSION}${file_localversion}${config_localversion}${LOCALVERSION}${scm_version}"