server/admin.c: Remove spurious `ping' in usage message.

[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 it under
dnl the terms of the GNU General Public License as published by the Free
dnl Software Foundation; either version 3 of the License, or (at your
dnl option) any later version.
dnl
dnl TrIPE is distributed in the hope that it will be useful, but WITHOUT
dnl ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
dnl FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
dnl for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with TrIPE.  If not, see <https://www.gnu.org/licenses/>.

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
AX_TYPE_SOCKLEN_T
AC_CANONICAL_HOST
AC_PROG_RANLIB

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

AC_CHECK_FUNCS([getifaddrs])

AC_ARG_WITH([adns],
  AS_HELP_STRING([--with-adns],
		 [use ADNS library for background name resolution]),
  [want_adns=$withval],
  [want_adns=auto])
case $want_adns in
  no) ;;
  *) AC_CHECK_LIB([adns], [adns_submit], [have_adns=yes], [have_adns=no]) ;;
esac
AC_SUBST([ADNS_LIBS])
case $want_adns,$have_adns in
  yes,no)
    AC_MSG_ERROR([ADNS library not found but explicitly requested])
    ;;
  yes,yes | auto,yes)
    ADNS_LIBS="-ladns"
    AC_DEFINE([HAVE_LIBADNS], [1],
	      [Define if the GNU adns library is available.])
    ;;
esac

PKG_CHECK_MODULES([mLib], [mLib >= 2.4.1])
PKG_CHECK_MODULES([catacomb], [catacomb >= 2.5.0])

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 the various external modules.
if test $python = yes; then
  AC_PYTHON_MODULE([pygtk])
  AC_PYTHON_MODULE([cdb])
  AC_PYTHON_MODULE([mLib])
  AC_PYTHON_MODULE([catacomb])
fi
AM_CONDITIONAL([HAVE_PYGTK], [test ${HAVE_PYMOD_PYGTK-no} = yes])
AM_CONDITIONAL([HAVE_PYCDB], [test ${HAVE_PYMOD_CDB-no} = yes])
AM_CONDITIONAL([HAVE_PYMLIB], [test ${HAVE_PYMOD_MLIB-no} = yes])
AM_CONDITIONAL([HAVE_PYCATACOMB], [test ${HAVE_PYMOD_CATACOMB-no} = yes])

dnl--------------------------------------------------------------------------
dnl Wireshark.

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

case "$wantshark,$wireshark_plugindir" in
  yes,unknown)
    AC_CACHE_CHECK([where to put Wireshark plugins],
      [mdw_cv_wireshark_plugin_dir], [
      mdw_cv_wireshark_plugin_dir=$(
	$PKG_CONFIG --variable=plugindir "wireshark >= 1.12.1")
      dnl It seems that the Debian package has a habit of bungling the
      dnl plugin path (#779788, #857729, ...).
      case "$mdw_cv_wireshark_plugin_dir" in
	/usr//usr/*)
	  mdw_cv_wireshark_plugin_dir=${mdw_cv_wireshark_plugin_dir#/usr/}
	  ;;
      esac])
    case "$mdw_cv_wireshark_plugin_dir" in
      /*)
	if test ! -d "$mdw_cv_wireshark_plugin_dir"; then
	  AC_MSG_WARN([alleged Wireshark plugin directory $mdw_cv_wireshark_plugin_dir doesn't exist])
	  haveshark=no
	else
	  wireshark_plugindir=$mdw_cv_wireshark_plugin_dir
	  haveshark=yes
	fi
	;;
      *)
	AC_MSG_WARN([failed to read Wireshark plugin directory])
	haveshark=no
	;;
    esac
    ;;
  no,*)
    haveshark=no
    ;;
esac

case "$haveshark,$needshark" in
  no,yes)
    AC_MSG_ERROR([failed to configure Wireshark plugin])
    ;;
  yes,*)
    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 --------------------------------------------------