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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 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 $short; then echo "+" return fi # If we are past a tagged commit (like # "v2.6.30-rc5-302-g72357d5"), we pretty print it. # # Ensure the abbreviated sha1 has exactly 12 # hex characters, to make the output # independent of git version, local # core.abbrev settings and/or total number of # objects in the current repository - passing # --abbrev=12 ensures a minimum of 12, and the # awk substr() then picks the 'g' and first 12 # hex chars. if atag="$(git describe --abbrev=12 2>/dev/null)"; then echo "$atag" | awk -F- '{printf("-%05d-%s", $(NF-1),substr($(NF),0,13))}' # If we don't have a tag at all we print -g{commitish}, # again using exactly 12 hex chars. else head="$(echo $head | cut -c1-12)" 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 "$res" >.scmversion fi exit fi if test -e include/config/auto.conf; then . include/config/auto.conf else echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2 exit 1 fi # localversion* files in the build and source directory res="$(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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