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 [--save-scmversion] [srctree]" >&2
20 if test "$1" = "--save-scmversion"; then
24 if test $# -gt 0; then
28 if test $# -gt 0 -o ! -d "$srctree"; then
38 if test -e .scmversion; then
42 if test "$1" = "--short"; then
46 # Check for git and a git repo.
47 if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
48 head=$(git rev-parse --verify HEAD 2>/dev/null); then
50 # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
51 # it, because this version is defined in the top level Makefile.
52 if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then
54 # If only the short version is requested, don't bother
55 # running further git commands
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", $(NF-1))}'
66 # Add -g and exactly 12 hex chars.
67 printf '%s%s' -g "$(echo $head | cut -c1-12)"
70 # Check for uncommitted changes.
71 # This script must avoid any write attempt to the source tree,
72 # which might be read-only.
73 # You cannot use 'git describe --dirty' because it tries to
74 # create .git/index.lock .
75 # First, with git-status, but --no-optional-locks is only
76 # supported in git >= 2.14, so fall back to git-diff-index if
77 # it fails. Note that git-diff-index does not refresh the
78 # index, so it may give misleading results. See
79 # git-update-index(1), git-diff-index(1), and git-status(1).
81 git --no-optional-locks status -uno --porcelain 2>/dev/null ||
82 git diff-index --name-only HEAD
99 if test -e "$file"; then
100 res="$res$(cat "$file")"
107 if test ! -e .scmversion; then
109 echo "$res" >.scmversion
114 if test -e include/config/auto.conf; then
115 . include/config/auto.conf
117 echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
121 # localversion* files in the build and source directory
122 res="$(collect_files localversion*)"
123 if test ! "$srctree" -ef .; then
124 res="$res$(collect_files "$srctree"/localversion*)"
127 # CONFIG_LOCALVERSION and LOCALVERSION (if set)
128 res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
130 # scm version string if not at a tagged commit
131 if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
132 # full scm version string
133 res="$res$(scm_version)"
134 elif [ "${LOCALVERSION+set}" != "set" ]; then
135 # If the variable LOCALVERSION is not set, append a plus
136 # sign if the repository is not in a clean annotated or
137 # signed tagged state (as git describe only looks at signed
138 # or annotated tags - git tag -a/-s).
140 # If the variable LOCALVERSION is set (including being set
141 # to an empty string), we don't want to append a plus sign.
142 scm=$(scm_version --short)