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dnl This file is part of IPACCT
dnl Copyright (c) Sergey Poznyakoff
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 You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. 
dnl
AC_INIT(src/ipacct.h)
AC_CANONICAL_SYSTEM
AM_INIT_AUTOMAKE(ipacct, 0.1)
AM_CONFIG_HEADER(config.h)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_YACC
AM_PROG_LEX
AC_PROG_INSTALL
AC_PROG_LN_S
AC_PROG_RANLIB
AC_ARG_PROGRAM

dnl Checks for header files.
AC_HEADER_STDC
AC_HEADER_DIRENT
AC_HEADER_SYS_WAIT
AC_CHECK_HEADERS(fcntl.h limits.h malloc.h sys/file.h sys/ioctl.h sys/time.h syslog.h unistd.h malloc.h sys/ioccom.h sys/sockio.h)
AC_SUBST(INCLUDES)
AC_CHECK_HEADERS(netinet/if_ether.h netinet/ip_var.h,
	         [],
		 [INCLUDES=-I'$(top_srcdir)/libpcap/linux-include'; break]) 

dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_OFF_T
AC_TYPE_PID_T
AC_TYPE_SIZE_T
AC_STRUCT_ST_RDEV
AC_HEADER_TIME
AC_STRUCT_TM

dnl Check for libraries
AC_CHECK_LIB(socket, main)
AC_CHECK_LIB(nsl, main)

dnl Checks for library functions.
AC_PROG_GCC_TRADITIONAL
AC_HEADER_MAJOR
AC_FUNC_SETPGRP
AC_TYPE_SIGNAL
AC_FUNC_STRFTIME
AC_FUNC_VFORK
AC_FUNC_VPRINTF
AC_FUNC_WAIT3
AC_CHECK_FUNCS(ftime gethostname gettimeofday getusershell getwd select socket strdup strerror strtol ether_hostton strerror)

dnl libpcap stuff
dnl All the stuff below has been shamelessly stolen from libpcap-0.4
dnl configure.in
dnl
dnl Not all versions of test support -c (character special) but it's a
dnl better way of testing since the device might be protected. So we
dnl check in our normal order using -r and then check the for the /dev
dnl guys again using -c.
dnl
AC_SUBST(V_PCAP)
AC_ARG_WITH(pcap, [  --with-pcap=TYPE        use packet capture TYPE])
AC_MSG_CHECKING(packet capture type)
if test ! -z "$with_pcap" ; then
	V_PCAP="$withval"
elif test -r /dev/bpf0 ; then
	V_PCAP=bpf
elif test -r /usr/include/net/pfilt.h ; then
	V_PCAP=pf
elif test -r /dev/enet ; then
	V_PCAP=enet
elif test -r /dev/nit ; then
	V_PCAP=snit
elif test -r /usr/include/sys/net/nit.h ; then
	V_PCAP=nit
elif test -r /usr/include/net/raw.h ; then
	V_PCAP=snoop
elif test -r /usr/include/sys/dlpi.h ; then
	V_PCAP=dlpi
elif test -r /usr/include/linux/socket.h ; then
	V_PCAP=linux
elif test -c /dev/bpf0 ; then		# check again in case not readable
	V_PCAP=bpf
elif test -c /dev/enet ; then		# check again in case not readable
	V_PCAP=enet
elif test -c /dev/nit ; then		# check again in case not readable
	V_PCAP=snit
else
	V_PCAP=null
fi
AC_MSG_RESULT($V_PCAP)

case "$V_PCAP" in

dlpi)
	AC_CHECK_HEADERS(sys/bufmod.h sys/dlpi_ext.h)
	AC_MSG_CHECKING(for /dev/dlpi device)
	if test -c /dev/dlpi ; then
		AC_MSG_RESULT(yes)
		AC_DEFINE(HAVE_DEV_DLPI)
	else
		AC_MSG_RESULT(no)
		dir="/dev/dlpi"
		AC_MSG_CHECKING(for $dir directory)
		if test -d $dir ; then
			AC_MSG_RESULT(yes)
			AC_DEFINE_UNQUOTED(PCAP_DEV_PREFIX, "$dir")
		else
			AC_MSG_RESULT(no)
		fi
	fi
	;;

linux)
	AC_CHECK_HEADERS(net/if_arp.h)
	AC_MSG_CHECKING(Linux kernel version)
	AC_CACHE_VAL(ac_cv_linux_vers,
	    ac_cv_linux_vers=`uname -r 2>&1 | \
		sed -n -e '$s/.* //' -e '$s/\..*//p'`)
	AC_MSG_RESULT($ac_cv_linux_vers)
	if test $ac_cv_linux_vers -lt 2 ; then
		AC_MSG_ERROR(version 2 or higher required; see the INSTALL doc for more info)
	fi
	;;

null)
	AC_MSG_WARN(cannot determine packet capture interface)
	AC_MSG_WARN((see the INSTALL doc for more info))
	;;

esac

case "$target_os" in

aix*)
	dnl Workaround to enable certain features
	AC_DEFINE(_SUN)
	;;

hpux9*)
	AC_DEFINE(HAVE_HPUX9)
	;;

hpux10.0*)
	;;

hpux10.1*)
	;;

hpux*)
	dnl HPUX 10.20 and above is similar to HPUX 9...
	AC_DEFINE(HAVE_HPUX10_20)
	;;

sinix*)
	AC_MSG_CHECKING(if SINIX compiler defines sinix)
	AC_CACHE_VAL(ac_cv_cc_sinix_defined,
		AC_TRY_COMPILE(
		    [],
		    [int i = sinix;],
		    ac_cv_cc_sinix_defined=yes,
		    ac_cv_cc_sinix_defined=no))
	    AC_MSG_RESULT($ac_cv_cc_sinix_defined)
	    if test $ac_cv_cc_sinix_defined = no ; then
		    AC_DEFINE(sinix)
	    fi
	;;

solaris*)
	AC_DEFINE(HAVE_SOLARIS)
	;;

linux*)
	V_INCLS="$V_INCLS -Ilinux-include"
	;;
esac

AC_MSG_CHECKING(for log facility)
log_facility="LOG_DAEMON"
AC_ARG_WITH(log-facility,
 [  --with-log-facility=facility   enable logging to the given facility],
 AC_TRY_COMPILE([#include <syslog.h>], int lf = $withval,
	log_facility=$withval))
AC_DEFINE_UNQUOTED(LOGFACILITY, $log_facility)
AC_MSG_RESULT($log_facility)


AC_OUTPUT(libpcap/Makefile src/Makefile Makefile)

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