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146 lines
3.5 KiB
146 lines
3.5 KiB
#!/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 "$res" >.scmversion |
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fi |
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exit |
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fi |
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if test -e include/config/auto.conf; then |
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. include/config/auto.conf |
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else |
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echo "Error: kernelrelease not valid - run 'make prepare' to update it" >&2 |
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exit 1 |
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fi |
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# localversion* files in the build and source directory |
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res="$(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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res="${res}${CONFIG_LOCALVERSION}${LOCALVERSION}" |
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# scm version string if not at a tagged commit |
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if test "$CONFIG_LOCALVERSION_AUTO" = "y"; 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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