Index: autogen.sh
--- autogen.sh.orig
+++ autogen.sh
@@ -1,4 +1,4 @@
-#!/usr/bin/env bash
+#!/bin/ksh
 
 
 AUTOCONF=$(command -v autoconf)
@@ -47,8 +47,8 @@ GIT_DATE=`date +%Y%m%d`
 GIT_RELEASE="$GIT_TAG:$GIT_DATE"
 GIT_BRANCH=`git rev-parse --abbrev-ref HEAD | sed "s/heads\///g"`
 else
-GIT_RELEASE="$VERSION"
-GIT_DATE=`date`
+GIT_RELEASE="${GIT_RELEASE:=$VERSION}"
+GIT_DATE="${GIT_DATE:=`date`}"
 GIT_BRANCH=""
 fi