#!/bin/sh

#

# This scripts takes the major and minor release numbers and adds

# local version information from the git version control system.

# Adapted from scripts/setlocalversion in the Linux kernel sources.

#

major=2

minor=0

extra=

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()

{

	cd "$srctree"

	# Check for git and a git repo.

	if test -d .git && 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 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

		# Update index only on r/w media

		[ -w . ] && git update-index --refresh --unmerged > /dev/null

		# 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

}

res="${major}.${minor}${extra}$(scm_version)"

echo "$res"