AC_INIT(src/lldp_main.c)
AC_PREREQ(1.5)
AM_INIT_AUTOMAKE(lldpd, 0.3)
AM_MAINTAINER_MODE
AC_CANONICAL_HOST
AC_PROG_RANLIB
AC_PROG_CC
 if test -n "$GCC"; then
      CFLAGS="$CFLAGS -Wall"
 fi

AC_HEADER_STDC

AC_C_BIGENDIAN([big_endian=true;AC_DEFINE(BIGENDIAN)],[big_endian=false;AC_DEFINE(LILENDIAN)])

GGDBFLAGS=""

AC_ARG_ENABLE(experimental,  [  --enable-experimental     enable the use of experimental features/code. ],
     [ AC_DEFINE(EXPERIMENTAL)  ],)

 AC_ARG_ENABLE(efence, [  --enable-efence           enable use of Electric Fence for memory debugging.],
[ AC_CHECK_HEADER(efence.h, [MORELIBS="$MORELIBS -lefence" ], AC_MSG_ERROR([You must have Electric Fence installed to use it!]))
   AC_DEFINE(USE_EFENCE)
],)

AC_ARG_ENABLE(generic-framer,  [  --enable-generic-framer   enable the use of PCAP/DNET instead of native handler. ],
     [ FRAMER="generic" ], [ FRAMER="specific"])

AC_MSG_CHECKING([Operating System])

SYSTEM=`uname -s`
AC_MSG_RESULT([$SYSTEM])
if test $SYSTEM = "Darwin"; then
   AC_DEFINE(DARWIN)
fi
if test $SYSTEM = "FreeBSD" || test $SYSTEM = "OpenBSD" || test $SYSTEM = "NetBSD"; then
   AC_DEFINE(__BSD__)
fi
if test $SYSTEM = "FreeBSD" || test $SYSTEM = "OpenBSD" || test $SYSTEM = "NetBSD" || test $SYSTEM = "Darwin"; then
   AC_DEFINE(BPF_FRAMER)
fi
if test $SYSTEM = "OpenBSD"; then
   AC_DEFINE(OPENBSD)
fi
if test $SYSTEM = "FreeBSD"; then
   AC_DEFINE(FREEBSD)
fi
if test $SYSTEM = "NetBSD"; then
   AC_DEFINE(NETBSD)
fi
if test $SYSTEM = "Linux"; then
   AC_DEFINE(LINUX)
fi

if test "$FRAMER" != "generic"; then
   AC_MSG_CHECKING([for native frame interface])
   case "$host_os" in
        *linux*)
                AC_MSG_RESULT(linux)
                AC_DEFINE(LINUX_FRAMER)
                MORELIBS="${MORELIBS} -lm"
                FRAMER="linux"
                ;;
        *freebsd*)
                AC_MSG_RESULT(freebsd)
                AC_DEFINE(FREEBSD_FRAMER)
                FRAMER="freebsd"
                ;;
        *openbsd*)
                AC_MSG_RESULT(openbsd)
                AC_DEFINE(OPENBSD_FRAMER)
                FRAMER="openbsd"
                ;;
        *netbsd*)
                AC_MSG_RESULT(netbsd)
                AC_DEFINE(NETBSD_FRAMER)
                FRAMER="netbsd"
                ;;
        *darwin*)
                AC_MSG_RESULT(Darwin/Mac OS X)
                AC_DEFINE(MACOSX_FRAMER)
                FRAMER="darwin"
                ;;
        *)
                AC_DEFINE(GENERIC_FRAMER)
                AC_MSG_RESULT(generic)
                MORELIBS="${MORELIBS} -lpcap -ldnet"
                FRAMER="generic"
                ;;
   esac
else
  AC_DEFINE(GENERIC_FRAMER)
  MORELIBS="${MORELIBS} -lpcap -ldnet"
  FRAMER="generic"
fi

if test $FRAMER = "linux"; then
   AC_MSG_CHECKING([for procfs support])
   if test -r /proc/net/dev; then
      AC_MSG_RESULT(okay)
   else
      AC_MSG_ERROR([You must have ProcFS enabled in your kernel!]);
   fi
fi

CFLAGS="$GGDBFLAGS $CFLAGS"

dnl Touch the makefile.in to avoid running automake the next time we
dnl run.
touch Makefile.in

AC_SUBST(MORELIBS)
AC_SUBST(DARWINLIBS)
AC_SUBST(CORELIBS)
AC_SUBST(MOREDEFS)
AC_SUBST(LDFLAGS)
AC_SUBST(INCS)
AC_SUBST(DARWININCS)
AC_SUBST(PREFIX)

AC_OUTPUT(Makefile src/Makefile)