svc/tripe-ifup.in: Trim prefix length from IPv6 address used as gateway.

[tripe] / configure.ac

dnl -*-autoconf-*-
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--------------------------------------------------------------------------
dnl Initialization.

mdw_AUTO_VERSION
AC_INIT([tripe], AUTO_VERSION, [mdw@distorted.org.uk])
AC_CONFIG_SRCDIR([server/tripe.h])
AC_CONFIG_AUX_DIR([config])
AM_INIT_AUTOMAKE([foreign])
mdw_SILENT_RULES

AC_PROG_CC
AM_PROG_CC_C_O
AX_CFLAGS_WARN_ALL
AC_CANONICAL_HOST
AM_PROG_LIBTOOL

AC_CHECK_PROGS([AUTOM4TE], [autom4te])

mdw_ORIG_CFLAGS=$CFLAGS
mdw_ORIG_CPPFLAGS=$CPPFLAGS
AC_SUBST(AM_CFLAGS)
AC_SUBST(AM_CPPFLAGS)

dnl--------------------------------------------------------------------------
dnl C programming environment.

AC_CHECK_HEADERS([stdarg.h])

AC_SEARCH_LIBS([socket], [socket])

case "$host_os" in
  linux)
    AC_ARG_WITH([linux-includes],
		AS_HELP_STRING(
		  [--with-linux-includes=DIR],
		  [Linux kernel includes]),
		[AM_CPPFLAGS="AM_CPPFLAGS -I$withval"], [:])
    ;;
esac

PKG_CHECK_MODULES([mLib], [mLib >= 2.2.1])
PKG_CHECK_MODULES([catacomb], [catacomb >= 2.1.4])

AM_CFLAGS="$AM_CFLAGS $mLib_CFLAGS $catacomb_CFLAGS"

dnl--------------------------------------------------------------------------
dnl Directories to install things into.

dnl TRIPE_DEFINE_PATH(VAR, ARG, HELP, DEFAULT, [DEFINE, DEFINEHELP])
AC_DEFUN([TRIPE_DEFINE_PATH], [
  AC_ARG_WITH([$1], AS_HELP_STRING([--with-$1=$2], [$3]),
	      [$1=$withval], [$1=$4])
  AC_SUBST([$1])
  m4_if([$5], [], [], [
    mdw_DEFINE_PATHS([mdw_DEFINE_PATH([$5], [$][$1], [$6])])
  ])
])

dnl Actual options.
TRIPE_DEFINE_PATH(
  [configdir], [DIR], [keys and other configuration [[LOCALSTATE/tripe]]],
  ['${localstatedir}/tripe'],
  [CONFIGDIR], [Look for keys and other configuration here.])

TRIPE_DEFINE_PATH(
  [socketdir], [DIR], [admin socket [[.]]], [.],
  [SOCKETDIR], [Create or look for administration socket here.])

TRIPE_DEFINE_PATH(
  [pidfile], [FILE], [process-id [[./tripectl.pid]]], [tripectl.pid])

TRIPE_DEFINE_PATH(
  [initconfig], [FILE],
  [configuration for init script [[SYSCONFDIR/tripe.conf]]],
  ['${sysconfdir}/tripe.conf'])

TRIPE_DEFINE_PATH(
  [logfile], [FILE], [logging output [[./tripe.log]]], [tripe.log])

dnl--------------------------------------------------------------------------
dnl Privilege-separation helper.

mdw_DEFINE_PATHS([
  AC_DEFINE_UNQUOTED([PRIVSEP_HELPER],
    ["mdw_PATH([$libexecdir])/mdw_PROG([tripe-privhelper])"],
    [Pathname of privilege-separation helper.])
])

dnl--------------------------------------------------------------------------
dnl Other options.

AC_ARG_WITH([tracing],
	    AS_HELP_STRING(
	      [--without-tracing],
	      [compile out tracing support (not recommended)]),
	    [test "$withval" = no &&
	      AC_DEFINE([NTRACE], [1], [Disable all tracing.])],
	    [:])

dnl--------------------------------------------------------------------------
dnl Tunnel devices.

dnl Provide the user with a choice.
AC_ARG_WITH([tunnel],
	    AS_HELP_STRING(
	      [--with-tunnel=KIND],
	      [kinds of tunnel device to use (linux, unet, bsd, slip)]),
	    [tun=$withval], [tun=auto])

dnl If he doesn't choose, pick something sensible.
if test "$tun" = auto; then
  AC_CACHE_CHECK([tunnel drivers to use], [mdw_cv_tunnel], [
    mdw_cv_tunnel=""
    case $host_os in
      linux*)
	case `uname -r` in
	  [2.[4-9].*] | [2.[1-9][0-9]*.*] | [[3-9].*] | [[1-9][0-9]*.*])
	    mdw_cv_tunnel=linux
	    ;;
	  *)
	    mdw_cv_tunnel=unet
	    ;;
	esac
	;;
      *bsd*)
	mdw_cv_tunnel=bsd
	;;
    esac
    mdw_cv_tunnel=$mdw_cv_tunnel${mdw_cv_tunnel:+ }slip
  ])
  tun=$mdw_cv_tunnel
fi

tunnels=""
for i in $tun; do
  case $i in
    linux) AC_DEFINE([TUN_LINUX], [1],
		     [Install the Linux TUN/TAP driver.]) ;;
    bsd) AC_DEFINE([TUN_BSD], [1],
		   [Install the BSD tunnel driver.]) ;;
    unet) AC_DEFINE([TUN_UNET], [1],
		    [Install the obsolete Linux Usernet driver.]) ;;
    slip) ;;
    *) AC_MSG_ERROR([Unknown tunnel type]) ;;
  esac
  tunnels="$tunnels&tun_$i, "
done
AC_DEFINE_UNQUOTED([TUN_LIST], [$tunnels 0],
  [List of tunnel drivers to install.])

dnl--------------------------------------------------------------------------
dnl Python.

dnl Find out whether Python exists at all.
AM_PATH_PYTHON([2.4], [python=yes], [python=no])
AM_CONDITIONAL([HAVE_PYTHON], [test $python = yes])

dnl Find out whether we can use Catacomb and GTK.
if test $python = yes; then
  AC_PYTHON_MODULE([pygtk])
  AC_PYTHON_MODULE([catacomb])
fi
AM_CONDITIONAL([HAVE_PYGTK], [test ${HAVE_PYMOD_PYGTK-no} = yes])
AM_CONDITIONAL([HAVE_PYCATACOMB], [test ${HAVE_PYMOD_CATACOMB-no} = yes])

dnl--------------------------------------------------------------------------
dnl Wireshark.
dnl
dnl This is all distressingly ugly and complicated.  Why they can't just
dnl provide a pkg-config dropping containing all the useful information about
dnl the installation I don't know.

WIRESHARK_CFLAGS=""
: ${wireshark_plugindir=unknown}

dnl Get the user to help.
AC_ARG_WITH([wireshark],
	    AS_HELP_STRING(
	      [--with-wireshark[=DIR]],
	      [build and install Wireshark plugin]),
	    [case "$withval" in
	       no)  haveshark=no needshark=no ;;
	       yes) haveshark=yes needshark=yes ;;
	       *)   haveshark=yes needshark=yes
		    wireshark_plugindir=$withval ;;
	    esac],
	    [haveshark=yes needshark=no])

dnl Try to find the Wireshark installation directory the hard way.  This is
dnl remarkably annoying.  This is, unfortunately, very likely to guess wrong,
dnl but there doesn't seem to be a better way.
case "$haveshark,$wireshark_plugindir" in
  yes,unknown)
    AC_CACHE_CHECK([where to put Wireshark plugins],
      [mdw_cv_wireshark_plugin_dir], [
      mdw_cv_wireshark_plugin_dir=$(
	for i in \
	  $libexecdir $libdir $exec_prefix/lib $prefix/lib \
	  /usr/local/lib /usr/lib
	do
	  for j in \
	    wireshark/plugins/* wireshark/*/plugins \
	    */wireshark/plugins/* */wireshark/*/plugins
	  do
	    for k in $i/$j/*.so; do
	      if test -f "$k"; then
		echo $(AS_DIRNAME(["$k"]))
		exit
	      fi
	    done
	  done
	done
	echo "failed"
      )
    ])
    case $mdw_cv_wireshark_plugin_dir in
      failed) haveshark=no ;;
      *) wireshark_plugindir=$mdw_cv_wireshark_plugin_dir ;;
    esac
esac

dnl If we're still interested, find Glib.
case "$haveshark" in
  yes) AM_PATH_GLIB_2_0([2.4.0], [], [haveshark=false], [gmodule]) ;;
esac

dnl Find the include directory.  This would be much easier if they just
dnl provided a pkg-config file.
case "$haveshark" in
  yes)
    bad=yes
    mdw_CFLAGS=$CFLAGS
    wsprefix=`echo $wireshark_plugindir | sed 's:/lib/.*$::'`
    AC_CACHE_CHECK([how to find the Wireshark headers],
		   [mdw_cv_wireshark_includes], [
      mdw_cv_wireshark_includes=failed
      for i in \
	  "" \
	  "-I${wsprefix}/include/wireshark" \
	  "-I${wsprefix}/include" \
	  "-I${prefix}/include/wireshark" \
	  "-I${prefix}/include" \
	  "-I/usr/include/wireshark" \
	  "-I/usr/local/include/wireshark" \
	  "-I/usr/local/include"; do
	CFLAGS="$GLIB_CFLAGS $i"
	AC_TRY_COMPILE([
#include <netinet/in.h>
#include <glib.h>
#include <wireshark/config.h>
#include <wireshark/epan/packet.h>],
	[dissector_handle_t dh; dh = create_dissector_handle(0, 0);],
	[bad=no; break])
      done
      case "$bad" in
	no) mdw_cv_wireshark_includes=$i ;;
      esac
      CFLAGS=$mdw_CFLAGS
    ])
    case "$mdw_cv_wireshark_includes" in
      failed) haveshark=no ;;
    esac
esac

case "$haveshark,$needshark" in
  no,yes)
    AC_MSG_ERROR([failed to configure Wireshark plugin])
    ;;
  yes,*)
    WIRESHARK_CFLAGS="$GLIB_CFLAGS $mdw_cv_wireshark_includes"
    AC_SUBST(WIRESHARK_CFLAGS)
    AC_SUBST(wireshark_plugindir)
    ;;
esac

AM_CONDITIONAL([HAVE_WIRESHARK], [test "$haveshark" = yes])

dnl--------------------------------------------------------------------------
dnl Produce output.

CFLAGS=$mdw_ORIG_CFLAGS
CPPFLAGS=$mdw_ORIG_CPPFLAGS

AC_CONFIG_HEADER([config/config.h])
AC_CONFIG_TESTDIR([t])

AC_CONFIG_FILES(
  [Makefile]
  [common/Makefile]
  [uslip/Makefile]
  [pathmtu/Makefile]
  [client/Makefile]
  [priv/Makefile]
  [server/Makefile]
  [proxy/Makefile]
  [pkstream/Makefile]
  [wireshark/Makefile]
  [init/Makefile]
  [py/Makefile]
  [peerdb/Makefile]
  [keys/Makefile]
  [svc/Makefile]
  [mon/Makefile]
  [contrib/Makefile]
  [t/Makefile t/atlocal])
AC_OUTPUT

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