#!/bin/sh

srcdir=`dirname $0`

if [ ! -f git-version.h ]; then
    touch git-version.h
fi

if test -d "$srcdir/.git" || test -f "$srcdir/.git"; then
    gitver=`git describe --abbrev=8 2>/dev/null`
    # NOTE: I'm avoiding "|" in sed since I'm not sure if sed -r is portable and "\|" fails on some OSes.
    verchk=`echo "$gitver-" | sed -n '/^v3\.[0-9][0-9]*\.[0-9][0-9]*\(pre[0-9]*\)*-/p'`
    if [ -n "$verchk" ]; then
	echo "#define RSYNC_GITVER \"$gitver\"" >git-version.h.new
	if ! diff git-version.h.new git-version.h >/dev/null; then
	    echo "Updating git-version.h"
	    mv git-version.h.new git-version.h
	else
	    rm git-version.h.new
	fi
    fi
fi