linux-yocto/scripts/setlocalversion

#!/bin/sh

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
	if git diff-index --name-only HEAD | grep -qv "^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" 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"