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|
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
#
# This scripts adds local version information from git.
#
# 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 [srctree]" >&2
exit 1
}
srctree=.
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 "$1" = "--short"; then
short=true
fi
# Check for git and a git repo.
if test -z "$(git rev-parse --show-cdup 2>/dev/null)" &&
head=$(git rev-parse --verify HEAD 2>/dev/null); then
exact_match=$(git describe --exact-match 2>/dev/null)
# If we are at a tagged commit (like "v2.6.30-rc6"), we print
# it directly in the "else" branch.
if [ -z "$exact_match" ]; 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("%s-%05d-%s", $1, $(NF-1),substr($(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
else
printf '%s' $exact_match
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
else
cat VERSION
fi
}
scm_version
|
