configure.in

实现vpn网关用来建立 IP虚拟隧道

dnl
dnl  TUN - Universal TUN/TAP device driver.
dnl  Copyright (C) 1999-2000 Maxim Krasnyansky <[e-mail]>
dnl
dnl  This program is free software; you can redistribute it and/or modify
dnl  it under the terms of the GNU General Public License as published by
dnl  the Free Software Foundation; either version 2 of the License, or
dnl  (at your option) any later version.
dnl
dnl  This program is distributed in the hope that it will be useful,
dnl  but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl  GNU General Public License for more details.
dnl
dnl  $Id: configure.in,v 1.5 2000/05/09 01:58:55 maxk Exp $
dnl
dnl Process this file with autoconf to produce a configure script.
dnl
AC_INIT()
AC_SUBST(OS_DIR)

dnl Guess host type.
AC_CANONICAL_HOST
AC_CANONICAL_SYSTEM

dnl Check for programs.
AC_PROG_CC
AC_PROG_AWK
AC_PROG_INSTALL

case $host_os in
	*linux*)
	     OS_DIR="linux"
	     ;;
	*solaris*)
	     OS_DIR="solaris"
	     ;;
	*freebsd*)
	     OS_DIR="freebsd"
	     ;;
	*)
	     AC_MSG_ERROR( Unsupported OS ) 
	     ;;
esac	     
AC_CONFIG_SUBDIRS($OS_DIR)

dnl Build release name
changequote(<,>)
REL=`echo 'substr($Name,0)$' | tr -d '$: \-' | sed 's/^[A-Za-z]*//' | sed 's/\_/\./'`
TUN_VER="$REL `date '+%m/%d/%Y'`"; export TUN_VER
changequote([,])

AC_OUTPUT(Makefile)