146 lines
3.6 KiB
Bash
Executable File
146 lines
3.6 KiB
Bash
Executable File
#!/bin/sh
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# SPDX-License-Identifier: GPL-2.0
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#
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# This scripts adds local version information from the version
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# control systems git, mercurial (hg) and subversion (svn).
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#
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# If something goes wrong, send a mail the kernel build mailinglist
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# (see MAINTAINERS) and CC Nico Schottelius
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# <nico-linuxsetlocalversion -at- schottelius.org>.
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#
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#
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usage() {
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echo "Usage: $0 [--save-scmversion] [srctree]" >&2
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exit 1
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}
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scm_only=false
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srctree=.
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if test "$1" = "--save-scmversion"; then
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scm_only=true
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shift
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fi
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if test $# -gt 0; then
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srctree=$1
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shift
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fi
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if test $# -gt 0 -o ! -d "$srctree"; then
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usage
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fi
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scm_version()
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{
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local short
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short=false
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cd "$srctree"
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if test -e .scmversion; then
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cat .scmversion
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return
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fi
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if test "$1" = "--short"; then
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short=true
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fi
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# Check for git and a git repo.
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if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
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head=$(git rev-parse --verify HEAD 2>/dev/null); then
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# If we are at a tagged commit (like "v2.6.30-rc6"), we ignore
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# it, because this version is defined in the top level Makefile.
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if [ -z "$(git describe --exact-match 2>/dev/null)" ]; then
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# If only the short version is requested, don't bother
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# running further git commands
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if $short; then
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echo "+"
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return
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fi
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# If we are past a tagged commit (like
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# "v2.6.30-rc5-302-g72357d5"), we pretty print it.
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if atag="$(git describe 2>/dev/null)"; then
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echo "$atag" | awk -F- '{printf("-%05d", $(NF-1))}'
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fi
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# Add -g and exactly 12 hex chars.
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printf '%s%s' -g "$(echo $head | cut -c1-12)"
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fi
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# Check for uncommitted changes.
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# This script must avoid any write attempt to the source tree,
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# which might be read-only.
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# You cannot use 'git describe --dirty' because it tries to
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# create .git/index.lock .
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# First, with git-status, but --no-optional-locks is only
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# supported in git >= 2.14, so fall back to git-diff-index if
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# it fails. Note that git-diff-index does not refresh the
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# index, so it may give misleading results. See
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# git-update-index(1), git-diff-index(1), and git-status(1).
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if {
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git --no-optional-locks status -uno --porcelain 2>/dev/null ||
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git diff-index --name-only HEAD
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} | read dummy; then
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printf '%s' -dirty
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fi
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fi
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}
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collect_files()
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{
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local file res=
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for file; do
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case "$file" in
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*\~*)
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continue
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;;
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esac
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if test -e "$file"; then
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res="$res$(cat "$file")"
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fi
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done
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echo "$res"
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}
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if $scm_only; then
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if test ! -e .scmversion; then
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res=$(scm_version)
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echo "$res" >.scmversion
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fi
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exit
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fi
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if ! test -e include/config/auto.conf; then
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echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2
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exit 1
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fi
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# localversion* files in the build and source directory
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res="$(collect_files localversion*)"
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if test ! "$srctree" -ef .; then
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res="$res$(collect_files "$srctree"/localversion*)"
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fi
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# CONFIG_LOCALVERSION and LOCALVERSION (if set)
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config_localversion=$(sed -n 's/^CONFIG_LOCALVERSION="\(.*\)"$/\1/p' include/config/auto.conf)
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res="${res}${config_localversion}${LOCALVERSION}"
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# scm version string if not at a tagged commit
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if grep -q "^CONFIG_LOCALVERSION_AUTO=y$" include/config/auto.conf; then
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# full scm version string
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res="$res$(scm_version)"
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elif [ "${LOCALVERSION+set}" != "set" ]; then
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# If the variable LOCALVERSION is not set, append a plus
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# sign if the repository is not in a clean annotated or
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# signed tagged state (as git describe only looks at signed
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# or annotated tags - git tag -a/-s).
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#
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# If the variable LOCALVERSION is set (including being set
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# to an empty string), we don't want to append a plus sign.
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scm=$(scm_version --short)
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res="$res${scm:++}"
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fi
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echo "$res"
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