1#!/bin/bash
2#
3# determine-version -- report a useful version for releases
4#
5# Copyright 2008, Aron Griffis <agriffis@n01se.net>
6# Copyright 2008, Oracle
7# Released under the GNU GPLv2
8
9v="v0.16"
10
11which git &> /dev/null
12if [ $? == 0 ]; then
13    git branch >& /dev/null
14    if [ $? == 0 ]; then
15	    if head=`git rev-parse --verify HEAD 2>/dev/null`; then
16		if tag=`git describe --tags 2>/dev/null`; then
17		    v="$tag"
18		fi
19
20		# Are there uncommitted changes?
21		git update-index --refresh --unmerged > /dev/null
22		if git diff-index --name-only HEAD | \
23		    grep -v "^scripts/package" \
24		    | read dummy; then
25		    v="$v"-dirty
26		fi
27	    fi
28    fi
29fi
30
31echo "#ifndef __BUILD_VERSION" > .build-version.h
32echo "#define __BUILD_VERSION" >> .build-version.h
33echo "#define BTRFS_BUILD_VERSION \"Btrfs $v\"" >> .build-version.h
34echo "#endif" >> .build-version.h
35
36diff -q version.h .build-version.h >& /dev/null
37
38if [ $? == 0 ]; then
39    rm .build-version.h
40    exit 0
41fi
42
43mv .build-version.h version.h
44