dnl Process this file with autoconf to produce a configure script.
AC_RELEASE("$Id")
AC_INIT(queso.c)
AC_CONFIG_HEADER(config.h)

dnl Checks for programs.
AC_PROG_CC
AC_PROG_INSTALL


dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_BIGENDIAN
AC_C_CONST
AC_HEADER_TIME

dnl Checks for library functions.
AC_CHECK_FUNCS(socket)

dnl Check that the struct ip has member ip_csum
AC_MSG_CHECKING([struct ip contains ip_csum])
AC_TRY_COMPILE([#ifdef __linux__
#define __BSD_SOURCE
#define _BSD_SOURCE
#endif
#include <sys/types.h> 
#include <netinet/in.h>
#include <netinet/in_systm.h>
#include <netinet/ip.h>],
[
struct ip ip;
ip.ip_csum = 0;
],	       
[AC_MSG_RESULT(yes); AC_DEFINE(HAVE_STRUCT_IP_CSUM)],
[AC_MSG_RESULT(no);])

PCAP=0

dnl Checking Arguments
AC_ARG_WITH(pcapdir, [  --with-pcapdir=DIR      Specify libpcap directory],[PCAP=1],[pcapdir=../libpcap-0.4])

dnl Check OS
AC_MSG_CHECKING(operating system)
NEEDS_HTONS_IP_LEN=1
case "`uname -s`" in
Linux)
       AC_DEFINE(LINUX)
       AC_DEFINE(__BSD_SOURCE)
       AC_DEFINE(_BSD_SOURCE)
       ;;
SunOS)
       PCAP=1
       case "`uname -r`" in
       5.4)
            AC_DEFINE(SOLARIS_CKSUM_BUG)
            ;;
       5.5*)
            AC_DEFINE(SOLARIS_CKSUM_BUG)
            ;;
       esac
       ;;
    *)
       PCAP=1
       ;;
esac
AC_MSG_RESULT(`uname -s -r`)
if test "$PCAP" != "0"; then
       AC_DEFINE(PCAP)
       LIBS="$LIBS -L$pcapdir -lpcap"
       CFLAGS="$CFLAGS -I$pcapdir"
       AC_SUBST(LIBS)
       AC_SUBST(CFLAGS)
fi
if test ! -z "$NEEDS_HTONS_IP_LEN" ; then
       AC_DEFINE(NEEDS_HTONS_IP_LEN)
fi

dnl Checks for libraries.
AC_CHECK_LIB(nsl,main)
AC_CHECK_LIB(socket,main)

dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(pcap.h)

dnl Make Makefile
AC_OUTPUT(Makefile)