dnl -*-autoconf-*-
dnl
dnl $Id: configure.in,v 1.13 2003/10/15 09:30:18 mdw Exp $
dnl
dnl Configuration script for TrIPE
dnl
dnl (c) 2001 Straylight/Edgeware
dnl

dnl ----- Licensing notice --------------------------------------------------
dnl
dnl This file is part of Trivial IP Encryption (TrIPE).
dnl
dnl TrIPE 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 TrIPE 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 You should have received a copy of the GNU General Public License
dnl along with TrIPE; if not, write to the Free Software Foundation,
dnl Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

dnl ----- Revision history --------------------------------------------------
dnl
dnl $Log: configure.in,v $
dnl Revision 1.13  2003/10/15 09:30:18  mdw
dnl Add support for Ethereal protocol analysis.
dnl
dnl Revision 1.12  2003/07/13 11:54:40  mdw
dnl Version bump.
dnl
dnl Revision 1.11  2003/05/17 11:04:38  mdw
dnl Ship new configuration and startup kit.
dnl
dnl Revision 1.9  2003/04/06 10:33:31  mdw
dnl And again.  (Sigh.)
dnl
dnl Revision 1.8  2003/04/06 10:31:13  mdw
dnl Fix stupid bug.
dnl
dnl Revision 1.7  2003/04/06 10:25:17  mdw
dnl Support Linux TUN/TAP device.  Fix some bugs.
dnl
dnl Revision 1.6  2001/06/19 22:13:57  mdw
dnl Version bump.
dnl
dnl Revision 1.5  2001/03/03 12:30:39  mdw
dnl Make this a pre-release.
dnl
dnl Revision 1.4  2001/02/22 09:07:28  mdw
dnl Build documents now.
dnl
dnl Revision 1.3  2001/02/16 21:24:12  mdw
dnl Don't link the client against Catacomb.
dnl
dnl Revision 1.2  2001/02/04 01:17:54  mdw
dnl Create a configuration header file to tidy up command lines.
dnl
dnl Revision 1.1  2001/02/03 20:26:37  mdw
dnl Initial checkin.
dnl

AC_INIT(tripe.c)
AM_INIT_AUTOMAKE(tripe, 1.0.0pre5)
AM_CONFIG_HEADER(config.h)
AC_CANONICAL_HOST

AC_PROG_MAKE_SET
AC_PROG_CC
AM_PROG_LIBTOOL
mdw_GCC_FLAGS([-Wall])
mdw_OPT_TRACE

AC_ARG_WITH([linux-includes],
[  --with-linux-includes=DIR
                          search for Linux kernel includes in DIR],
[CFLAGS="$CFLAGS -I$withval"],
[:])

DIRS=""
AC_ARG_WITH([ethereal],
[  --with-ethereal        build and install Ethereal plugin],
[case "$withval" in
   no) ethereal=false;;
   yes) ethereal='${prefix}/lib/ethereal/plugins';; 
   *) ethereal=$withval;;
esac],
[ethereal=false])

case $host_os in
  linux*)
    case `uname -r` in
changequote(,)dnl
      2.[4-9].* | 2.[1-9][0-9]*.* | [3-9].* | [1-9][0-9]*.*)
changequote([,])dnl
	tun=linux
	AC_DEFINE([TUN_TYPE], [TUN_LINUX])
	;;
      *)
	tun=unet
	AC_DEFINE([TUN_TYPE], [TUN_UNET])
	;;
    esac
    ;;
  *bsd*)
    tun=bsd
    AC_DEFINE([TUN_TYPE], [TUN_BSD])
    ;;
  *)
    AC_MSG_ERROR([Unsupported OS: no tunnel interface available])
    ;;
esac
AC_SUBST(tun)

mdw_MLIB(2.0.0)
mdw_CATACOMB(2.0.1, [CFLAGS="$CFLAGS $CATACOMB_CFLAGS"])

if test "$ethereal" != false; then
  AM_PATH_GLIB([1.2.0], [], AC_MSG_ERROR([failed to find GLib]), [gmodule])
  bad=true
  mdw_CFLAGS=$CFLAGS
  AC_CACHE_CHECK([how to find the Ethereal headers], 
    [mdw_cv_ethereal_includes], [
    for i in "" "-I/usr/include/ethereal"; do
      CFLAGS="$GLIB_CFLAGS $i"
      AC_TRY_COMPILE([
#include <netinet/in.h>
#include <glib.h>
#include <epan/packet.h>
], [
	dissector_handle_t dh;
	dh = creat_dissector_handle(0, 0);
      ], [bad=false; break])
    done
    if $bad; then
      AC_MSG_ERROR([failed to find Ethereal headers])
    fi
    mdw_cv_ethereal_includes=$i
    CFLAGS=$mdw_CFLAGS
  ])
  AC_CACHE_CHECK([whether the Ethereal headers are broken],
    [mdw_cv_ethereal_buggered], [
    CFLAGS="$GLIB_CFLAGS $i"
    AC_TRY_COMPILE([
#include <netinet/in.h>
#include <glib.h>
#include <epan/packet.h>
#include <plugins/plugin_api.h>
], [
      G_MODULE_EXPORT void plugin_init(plugin_address_table_t *pat)
      {
        plugin_address_table_init(pat);
      }
    ], [mdw_cv_ethereal_buggered=no], [mdw_cv_ethereal_buggered=yes])
    CFLAGS=$mdw_CFLAGS
  ])
  if test $mdw_cv_ethereal_buggered = yes; then
    AC_DEFINE(ETHEREAL_BUGGERED)
  fi

  ETHEREAL_CFLAGS="$CFLAGS $GLIB_CFLAGS $mdw_cv_ethereal_includes"
  ETHEREAL_PLUGIN_DIR=$ethereal
  AC_SUBST(ETHEREAL_CFLAGS)
  AC_SUBST(ETHEREAL_PLUGIN_DIR)
  DIRS="$DIRS ethereal"
fi

AC_SUBST(DIRS)
AC_OUTPUT(Makefile doc/Makefile ethereal/Makefile tripe-init)

dnl ----- That's all, folks -------------------------------------------------