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- #!/bin/sh
- # SPDX-License-Identifier: GPL-2.0
- #
- # This scripts adds local version information from the version
- # control systems git, mercurial (hg) and subversion (svn).
- #
- # If something goes wrong, send a mail the kernel build mailinglist
- # (see MAINTAINERS) and CC Nico Schottelius
- # <nico-linuxsetlocalversion -at- schottelius.org>.
- #
- #
- usage() {
- echo "Usage: $0 [--save-scmversion] [srctree]" >&2
- exit 1
- }
- scm_only=false
- srctree=.
- if test "$1" = "--save-scmversion"; then
- scm_only=true
- shift
- fi
- if test $# -gt 0; then
- srctree=$1
- shift
- fi
- if test $# -gt 0 -o ! -d "$srctree"; then
- usage
- fi
- scm_version()
- {
- local short
- short=false
- cd "$srctree"
- if test -e .scmversion; then
- cat .scmversion
- return
- fi
- if test "$1" = "--short"; then
- short=true
- fi
- # Check for git and a git repo.
- if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
- head=$(git rev-parse --verify --short HEAD 2>/dev/null); then
- # If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
- # it, because this version is defined in the top level Makefile.
- if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then
- # If only the short version is requested, don't bother
- # running further git commands
- if $short; then
- echo "+"
- return
- fi
- # If we are past a tagged commit (like
- # "v2.6.30-rc5-302-g72357d5"), we pretty print it.
- if atag="$(git describe 2>/dev/null)"; then
- echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),$(NF))}'
- # If we don't have a tag at all we print -g{commitish}.
- else
- printf '%s%s' -g $head
- fi
- fi
- # Is this git on svn?
- if git config --get svn-remote.svn.url >/dev/null; then
- printf -- '-svn%s' "$(git svn find-rev $head)"
- fi
- # Check for uncommitted changes.
- # First, with git-status, but --no-optional-locks is only
- # supported in git >= 2.14, so fall back to git-diff-index if
- # it fails. Note that git-diff-index does not refresh the
- # index, so it may give misleading results. See
- # git-update-index(1), git-diff-index(1), and git-status(1).
- if {
- git --no-optional-locks status -uno --porcelain 2>/dev/null ||
- git diff-index --name-only HEAD
- } | grep -qvE '^(.. )?scripts/package'; then
- printf '%s' -dirty
- fi
- # All done with git
- return
- fi
- # Check for mercurial and a mercurial repo.
- if test -d .hg && hgid=$(hg id 2>/dev/null); then
- # Do we have an tagged version? If so, latesttagdistance == 1
- if [ "$(hg log -r . --template '{latesttagdistance}')" = "1" ]; then
- id=$(hg log -r . --template '{latesttag}')
- printf '%s%s' -hg "$id"
- else
- tag=$(printf '%s' "$hgid" | cut -d' ' -f2)
- if [ -z "$tag" -o "$tag" = tip ]; then
- id=$(printf '%s' "$hgid" | sed 's/[+ ].*//')
- printf '%s%s' -hg "$id"
- fi
- fi
- # Are there uncommitted changes?
- # These are represented by + after the changeset id.
- case "$hgid" in
- *+|*+\ *) printf '%s' -dirty ;;
- esac
- # All done with mercurial
- return
- fi
- # Check for svn and a svn repo.
- if rev=$(LANG= LC_ALL= LC_MESSAGES=C svn info 2>/dev/null | grep '^Last Changed Rev'); then
- rev=$(echo $rev | awk '{print $NF}')
- printf -- '-svn%s' "$rev"
- # All done with svn
- return
- fi
- }
- collect_files()
- {
- local file res=
- for file; do
- case "$file" in
- *\~*)
- continue
- ;;
- esac
- if test -e "$file"; then
- res="$res$(cat "$file")"
- fi
- done
- echo "$res"
- }
- if $scm_only; then
- if test ! -e .scmversion; then
- res=$(scm_version)
- echo "$res" >.scmversion
- fi
- exit
- fi
- if test -e include/config/auto.conf; then
- # We are interested only in CONFIG_LOCALVERSION and
- # CONFIG_LOCALVERSION_AUTO, so extract these in a safe
- # way (i.e. w/o sourcing auto.conf)
- CONFIG_LOCALVERSION=`cat include/config/auto.conf | awk -F '=' '/^CONFIG_LOCALVERSION=/ {print $2}'`
- CONFIG_LOCALVERSION_AUTO=`cat include/config/auto.conf | awk -F '=' '/^CONFIG_LOCALVERSION_AUTO=/ {print $2}'`
- else
- echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
- exit 1
- fi
- # localversion* files in the build and source directory
- res="$(collect_files localversion*)"
- if test ! "$srctree" -ef .; then
- res="$res$(collect_files "$srctree"/localversion*)"
- fi
- # CONFIG_LOCALVERSION and LOCALVERSION (if set)
- res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}"
- # scm version string if not at a tagged commit
- if test "$CONFIG_LOCALVERSION_AUTO" = "y"; then
- # full scm version string
- res="$res$(scm_version)"
- else
- # append a plus sign if the repository is not in a clean
- # annotated or signed tagged state (as git describe only
- # looks at signed or annotated tags - git tag -a/-s) and
- # LOCALVERSION= is not specified
- if test "${LOCALVERSION+set}" != "set"; then
- scm=$(scm_version --short)
- res="$res${scm:++}"
- fi
- fi
- echo "$res"
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