configure.in - platform/external/tcpdump - Git at Google

 dnl @(#) $Header: /tcpdump/master/tcpdump/configure.in,v 1.140 2001-06-28 10:27:09 guy Exp $ (LBL)
 dnl
 dnl Copyright (c) 1994, 1995, 1996, 1997
 dnl	The Regents of the University of California.  All rights reserved.
 dnl
 dnl Process this file with autoconf to produce a configure script.
 dnl

 AC_REVISION($Revision: 1.140 $)
 AC_PREREQ(2.13)
 AC_INIT(tcpdump.c)

 AC_CANONICAL_SYSTEM

 AC_LBL_C_INIT(V_CCOPT, V_INCLS)
 AC_C_INLINE
 AC_C___ATTRIBUTE__

 AC_CHECK_HEADERS(fcntl.h rpc/rpcent.h netinet/if_ether.h)
 AC_HEADER_TIME

 case "$target_os" in

 linux*)
 	AC_MSG_CHECKING(Linux kernel version)
  	if test "$cross_compiling" = yes; then
  		AC_CACHE_VAL(ac_cv_linux_vers,
  		    ac_cv_linux_vers=unknown)
  	else
  		AC_CACHE_VAL(ac_cv_linux_vers,
  		    ac_cv_linux_vers=`uname -r 2>&1 | \
  			sed -n -e '$s/.* //' -e '$s/\..*//p'`)
  	fi
 	AC_MSG_RESULT($ac_cv_linux_vers)
  	if test $ac_cv_linux_vers = unknown ; then
  		AC_MSG_ERROR(cannot determine linux version when cross-compiling)
  	fi
 	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
 	;;

 *)
 	;;
 esac


 AC_CHECK_HEADERS(smi.h)
 AC_CHECK_LIB(smi, smiInit)
 if test "$ac_cv_header_smi_h" = yes -a "$ac_cv_lib_smi_smiInit" = yes
 then
 AC_MSG_CHECKING([whether to enable libsmi])
         AC_TRY_RUN([ /* libsmi available check */
 #include <smi.h>
 main()
 {
   int current, revision, age, n;
   const int required = 2;
   if (smiInit(""))
     exit(1);
   if (strcmp(SMI_LIBRARY_VERSION, smi_library_version))
     exit(2);
   n = sscanf(smi_library_version, "%d:%d:%d", &current, &revision, &age);
   if (n != 3)
     exit(3);
   if (required < current - age || required > current)
     exit(4);
   exit(0);
 }
 ],
 [ AC_MSG_RESULT(yes)
   AC_DEFINE(LIBSMI)
   libsmi=yes],
 dnl autoconf documentation says that $? contains the exit value.
 dnl reality is that it does not.  We leave this in just in case
 dnl autoconf ever comes back to match the documentation.
 [ case $? in
   1) AC_MSG_RESULT(no - smiInit failed) ;;
   2) AC_MSG_RESULT(no - header/library version mismatch) ;;
   3) AC_MSG_RESULT(no - can't determine library version) ;;
   4) AC_MSG_RESULT(no - too old) ;;
   *) AC_MSG_RESULT(no) ;;
   esac
   libsmi=no],
 [ AC_MSG_RESULT(not when cross-compiling)
   libsmi=no]
 )
 fi

 CFLAGS="$CFLAGS -Dss_family=__ss_family -Dss_len=__ss_len"
 AC_MSG_CHECKING([whether to enable ipv6])
 AC_ARG_ENABLE(ipv6,
 [  --enable-ipv6           enable ipv6 (with ipv4) support
   --disable-ipv6          disable ipv6 support],
 [ case "$enableval" in
 yes)   AC_MSG_RESULT(yes)
        LOCALSRC="print-ip6.c print-ip6opts.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c $LOCALSRC"
        AC_DEFINE(INET6)
        ipv6=yes
        ;;
 *)
        AC_MSG_RESULT(no)
        ipv6=no
        ;;
   esac ],

   AC_TRY_RUN([ /* AF_INET6 available check */
 #include <sys/types.h>
 #include <sys/socket.h>
 main()
 {
  if (socket(AF_INET6, SOCK_STREAM, 0) < 0)
    exit(1);
  else
    exit(0);
 }
 ],
 [ AC_MSG_RESULT(yes)
   LOCALSRC="print-ip6.c print-ip6opts.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c $LOCALSRC"
   AC_DEFINE(INET6)
   ipv6=yes],
 [ AC_MSG_RESULT(no)
   ipv6=no],
 [ AC_MSG_RESULT(no)
   ipv6=no]
 ))

 ipv6type=unknown
 ipv6lib=none
 ipv6trylibc=no

 if test "$ipv6" = "yes"; then
 	AC_MSG_CHECKING([ipv6 stack type])
 	for i in inria kame linux-glibc linux-libinet6 toshiba v6d zeta; do
 		case $i in
 		inria)
 			dnl http://www.kame.net/
 			AC_EGREP_CPP(yes, [dnl
 #include <netinet/in.h>
 #ifdef IPV6_INRIA_VERSION
 yes
 #endif],
 				[ipv6type=$i;
 				CFLAGS="-DINET6 $CFLAGS"])
 			;;
 		kame)
 			dnl http://www.kame.net/
 			AC_EGREP_CPP(yes, [dnl
 #include <netinet/in.h>
 #ifdef __KAME__
 yes
 #endif],
 				[ipv6type=$i;
 				ipv6lib=inet6;
 				ipv6libdir=/usr/local/v6/lib;
 				ipv6trylibc=yes;
 				CFLAGS="-DINET6 $CFLAGS"])
 			;;
 		linux-glibc)
 			dnl http://www.v6.linux.or.jp/
 			AC_EGREP_CPP(yes, [dnl
 #include <features.h>
 #if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
 yes
 #endif],
 				[ipv6type=$i;
 				CFLAGS="-DINET6 $CFLAGS"])
 			;;
 		linux-libinet6)
 			dnl http://www.v6.linux.or.jp/
 			if test -d /usr/inet6 -o -f /usr/include/netinet/ip6.h; then
 				ipv6type=$i
 				ipv6lib=inet6
 				ipv6libdir=/usr/inet6/lib
 				ipv6trylibc=yes;
 				CFLAGS="-DINET6 -I/usr/inet6/include $CFLAGS"
 			fi
 			;;
 		toshiba)
 			AC_EGREP_CPP(yes, [dnl
 #include <sys/param.h>
 #ifdef _TOSHIBA_INET6
 yes
 #endif],
 				[ipv6type=$i;
 				ipv6lib=inet6;
 				ipv6libdir=/usr/local/v6/lib;
 				CFLAGS="-DINET6 $CFLAGS"])
 			;;
 		v6d)
 			AC_EGREP_CPP(yes, [dnl
 #include </usr/local/v6/include/sys/v6config.h>
 #ifdef __V6D__
 yes
 #endif],
 				[ipv6type=$i;
 				ipv6lib=v6;
 				ipv6libdir=/usr/local/v6/lib;
 				CFLAGS="-I/usr/local/v6/include $CFLAGS"])
 			;;
 		zeta)
 			AC_EGREP_CPP(yes, [dnl
 #include <sys/param.h>
 #ifdef _ZETA_MINAMI_INET6
 yes
 #endif],
 				[ipv6type=$i;
 				ipv6lib=inet6;
 				ipv6libdir=/usr/local/v6/lib;
 				CFLAGS="-DINET6 $CFLAGS"])
 			;;
 		esac
 		if test "$ipv6type" != "unknown"; then
 			break
 		fi
 	done
 	AC_MSG_RESULT($ipv6type)
 fi

 if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then
 	if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then
 		LIBS="-L$ipv6libdir -l$ipv6lib $LIBS"
 		echo "You have $ipv6lib library, using it"
 	else
 		if test "$ipv6trylibc" = "yes"; then
 			echo "You do not have $ipv6lib library, using libc"
 		else
 			echo 'Fatal: no $ipv6lib library found.  cannot continue.'
 			echo "You need to fetch lib$ipv6lib.a from appropriate"
 			echo 'ipv6 kit and compile beforehand.'
 			exit 1
 		fi
 	fi
 fi


 if test "$ipv6" = "yes"; then
 	AC_SEARCH_LIBS(getaddrinfo, socket, [dnl
 	AC_MSG_CHECKING(getaddrinfo bug)
 	AC_TRY_RUN([
 #include <sys/types.h>
 #include <netdb.h>
 #include <string.h>
 #include <sys/socket.h>
 #include <netinet/in.h>

 main()
 {
   int passive, gaierr, inet4 = 0, inet6 = 0;
   struct addrinfo hints, *ai, *aitop;
   char straddr[INET6_ADDRSTRLEN], strport[16];

   for (passive = 0; passive <= 1; passive++) {
     memset(&hints, 0, sizeof(hints));
     hints.ai_family = AF_UNSPEC;
     hints.ai_flags = passive ? AI_PASSIVE : 0;
     hints.ai_socktype = SOCK_STREAM;
     if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) {
       (void)gai_strerror(gaierr);
       goto bad;
     }
     for (ai = aitop; ai; ai = ai->ai_next) {
       if (ai->ai_addr == NULL ||
           ai->ai_addrlen == 0 ||
           getnameinfo(ai->ai_addr, ai->ai_addrlen,
                       straddr, sizeof(straddr), strport, sizeof(strport),
                       NI_NUMERICHOST|NI_NUMERICSERV) != 0) {
         goto bad;
       }
       switch (ai->ai_family) {
       case AF_INET:
         if (strcmp(strport, "54321") != 0) {
           goto bad;
         }
         if (passive) {
           if (strcmp(straddr, "0.0.0.0") != 0) {
             goto bad;
           }
         } else {
           if (strcmp(straddr, "127.0.0.1") != 0) {
             goto bad;
           }
         }
         inet4++;
         break;
       case AF_INET6:
         if (strcmp(strport, "54321") != 0) {
           goto bad;
         }
         if (passive) {
           if (strcmp(straddr, "::") != 0) {
             goto bad;
           }
         } else {
           if (strcmp(straddr, "::1") != 0) {
             goto bad;
           }
         }
         inet6++;
         break;
       case AF_UNSPEC:
         goto bad;
         break;
 #ifdef AF_UNIX
       case AF_UNIX:
 #else
 #ifdef AF_LOCAL
       case AF_LOCAL:
 #endif
 #endif
       default:
         /* another family support? */
         break;
       }
     }
   }

   /* supported family should be 2, unsupported family should be 0 */
   if (!(inet4 == 0 || inet4 == 2))
     goto bad;
   if (!(inet6 == 0 || inet6 == 2))
     goto bad;

   if (aitop)
     freeaddrinfo(aitop);
   exit(0);

  bad:
   if (aitop)
     freeaddrinfo(aitop);
   exit(1);
 }
 ],
 	AC_MSG_RESULT(good)
 	buggygetaddrinfo=no,
 	AC_MSG_RESULT(buggy)
 	buggygetaddrinfo=yes,
 	AC_MSG_RESULT(buggy)
 	buggygetaddrinfo=yes)], [buggygetaddrinfo=yes])

 	if test "$buggygetaddrinfo" = "yes"; then
 		if test "$ipv6type" != "linux"; then
 			echo 'Fatal: You must get working getaddrinfo() function.'
 			echo '       or you can specify "--disable-ipv6"'.
 			exit 1
 		else
 			echo 'Warning: getaddrinfo() implementation on your system seems be buggy.'
 			echo '         Better upgreade your system library to newest version'
 			echo '         of GNU C library (aka glibc).'
 		fi
 	fi
 	AC_REPLACE_FUNCS(getaddrinfo getnameinfo)
 fi
 dnl AC_TRY_COMPILE(inet_ntop inet_pton inet_aton)
 AC_MSG_CHECKING(for inet_ntop)
 AC_TRY_COMPILE([#include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>], [char src[4], dst[128];
 inet_ntop(AF_INET, src, dst, sizeof(dst));],
 	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
 	AC_REPLACE_FUNCS(inet_ntop)])
 AC_MSG_CHECKING(for inet_pton)
 AC_TRY_COMPILE([#include <sys/types.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>], [char src[128], dst[4];
 inet_pton(AF_INET, src, dst);],
 	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
 	AC_REPLACE_FUNCS(inet_pton)])
 AC_MSG_CHECKING(for inet_aton)
 AC_TRY_COMPILE([#include <sys/types.h>
 #include <netinet/in.h>
 #include <arpa/inet.h>], [char src[128];
 struct in_addr dst;
 inet_aton(src, &dst);],
 	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
 	AC_REPLACE_FUNCS(inet_aton)])

 dnl portability macros for getaddrinfo/getnameinfo
 dnl
 dnl Check for sa_len
 AC_CHECK_SA_LEN(ac_cv_sockaddr_has_sa_len)
 if test "$ac_cv_sockaddr_has_sa_len" = no; then
 	missing_includes=yes
 fi

 dnl
 dnl check sizeof basic types.
 dnl They're very likely to be wrong for cross-compiling.
 AC_CHECK_SIZEOF(char, 1)
 AC_CHECK_SIZEOF(short, 2)
 AC_CHECK_SIZEOF(int, 4)
 AC_CHECK_SIZEOF(long, 4)

 dnl
 dnl Checks for u_intXX_t
 dnl AC_CHECK_BITTYPES(ac_cv_bittypes)
 dnl if test "$ac_cv_bittypes" = no; then
 dnl 	missing_includes=yes
 dnl fi

 dnl
 dnl Checks for addrinfo structure
 AC_STRUCT_ADDRINFO(ac_cv_addrinfo)
 if test "$ac_cv_addrinfo" = no; then
 	missing_includes=yes
 fi

 dnl
 dnl Checks for NI_MAXSERV
 AC_NI_MAXSERV(ac_cv_maxserv)
 if test "$ac_cv_maxserv" = no; then
 	missing_includes=yes
 fi

 dnl
 dnl Checks for NI_NAMEREQD
 AC_NI_NAMEREQD(ac_cv_namereqd)
 if test "$ac_cv_namereqd" = no; then
 	missing_includes=yes
 fi

 dnl
 dnl Checks for sockaddr_storage structure
 AC_STRUCT_SA_STORAGE(ac_cv_sa_storage)
 if test "$ac_cv_sa_storage" = no; then
 	missing_includes=yes
 fi

 dnl
 dnl Checks for IN[6]ADDRSZ
 AC_CHECK_ADDRSZ(ac_cv_addrsz)
 if test "$ac_cv_addrsz" = no; then
 	missing_includes=yes
 fi

 dnl
 dnl Checks for RES_USE_INET6
 AC_CHECK_RES_USE_INET6(ac_cv_res_inet6)
 if test "$ac_cv_res_inet6" = no; then
 	missing_includes=yes
 fi

 dnl
 dnl Checks for res_state_ext structure
 AC_STRUCT_RES_STATE_EXT(ac_cv_res_state_ext)
 if test "$ac_cv_res_state_ext" = no; then
 	missing_includes=yes
 fi

 dnl
 dnl Checks if res_state structure has nsort member.
 AC_STRUCT_RES_STATE(ac_cv_res_state)

 dnl
 dnl set additional include path if necessary
 if test "$missing_includes" = "yes"; then
 	CPPFLAGS="$CPPFLAGS -I\$(srcdir)/missing"
 	V_INCLS="$V_INCLS -I\$(srcdir)/missing"
 fi


 AC_REPLACE_FUNCS(vfprintf strcasecmp strlcat strlcpy strdup)
 AC_CHECK_FUNCS(ether_ntohost, [
     AC_CACHE_CHECK(for buggy ether_ntohost, ac_cv_buggy_ether_ntohost, [
 	AC_TRY_RUN([
 		#include <netdb.h>
 		#include <sys/types.h>
 		#include <sys/param.h>
 		#include <sys/socket.h>
 		#include <net/ethernet.h>

 		int
 		main(int argc, char **argv)
 		{
 			u_char ea[6] = { 0xff, 0xff, 0xff, 0xff, 0xff };
 			char name[MAXHOSTNAMELEN];

 			ether_ntohost(name, (struct ether_addr *)ea);
 			exit(0);
 		}
 	], [ac_cv_buggy_ether_ntohost=no],
 	   [ac_cv_buggy_ether_ntohost=yes],
 	   [ac_cv_buggy_ether_ntohost=not while cross-compiling])])
     if test "$ac_cv_buggy_ether_ntohost" = "no"; then
 	AC_DEFINE(USE_ETHER_NTOHOST)
     fi
 ])
 AC_CHECK_FUNCS(setlinebuf)

 usegetipnodeby=yes
 AC_CHECK_FUNCS(getipnodebyname getipnodebyaddr freeaddrinfo,
 	[], [usegetipnodeby=no])
 if test $usegetipnodeby = yes; then
 	AC_DEFINE(USE_GETIPNODEBY)
 fi

 needsnprintf=no
 AC_CHECK_FUNCS(vsnprintf snprintf,,
 	[needsnprintf=yes])
 if test $needsnprintf = yes; then
 	LIBOBJS="$LIBOBJS snprintf.o"
 fi

 AC_CHECK_LIB(dnet, main)
 AC_CHECK_LIB(rpc, main)
 AC_CHECK_LIB(nsl, getrpcbynumber)
 dnl AC_CHECK_LIB(z, uncompress)
 dnl AC_CHECK_HEADERS(zlib.h)

 AC_LBL_TYPE_SIGNAL

 AC_LBL_LIBPCAP(V_PCAPDEP, V_INCLS)

 AC_REPLACE_FUNCS(bpf_dump)	dnl moved to libpcap in 0.6

 V_GROUP=0
 if test -f /etc/group -a ! -z "`grep '^wheel:' /etc/group`" ; then
 	V_GROUP=wheel
 fi
 case "$target_os" in

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

 irix*)
 	V_GROUP=sys
 	;;

 osf*)
 	V_GROUP=system
 	;;

 solaris*)
 	V_GROUP=sys
 	;;
 esac

 if test -f /dev/bpf0 ; then
 	V_GROUP=bpf
 fi

 AC_LBL_CHECK_TYPE(u_int8_t, u_char)
 AC_LBL_CHECK_TYPE(int16_t, short)
 AC_LBL_CHECK_TYPE(u_int16_t, u_short)
 AC_LBL_CHECK_TYPE(int32_t, int)
 AC_LBL_CHECK_TYPE(u_int32_t, u_int)

 AC_LBL_DEVEL(V_CCOPT)

 AC_LBL_SOCKADDR_SA_LEN

 AC_LBL_UNALIGNED_ACCESS

 AC_VAR_H_ERRNO

 AC_ARG_WITH(crypto, [  --without-crypto        disable crypto support],
 	[], [
 AC_MSG_CHECKING(for SSLeay)
 ac_cv_ssleay_path=no
 incdir=no
 for dir in /usr /usr/local /usr/local/ssl /usr/pkg; do
 	if test -d $dir/lib -a -f $dir/lib/libcrypto.a; then
 		ac_cv_ssleay_path=$dir
 	fi
 	if test -d $dir/include/openssl -a -f $dir/include/openssl/des.h; then
 		incdir="-I$dir/include"
 	fi
 	if test "$ac_cv_ssleay_path" != "no" -a "$incdir" != "no"; then
 		break;
 	else
 		ac_cv_ssleay_path=no
 		incdir=no
 	fi
 done
 AC_MSG_RESULT($ac_cv_ssleay_path)
 if test "$ac_cv_ssleay_path" != no; then
 	V_INCLS="$V_INCLS $incdir"
 	LDFLAGS="-L$dir/lib $LDFLAGS"
 	if test -f $ac_cv_ssleay_path/lib/libRSAglue.a; then
 		LIBS="$LIBS -lRSAglue"
 	fi
 	if test -f $ac_cv_ssleay_path/lib/librsaref.a; then
 		LIBS="$LIBS -lrsaref"
 	fi
 	AC_CHECK_LIB(crypto, des_cbc_encrypt)

 	bak_CPPFLAGS=$CPPFLAGS
 	CPPFLAGS="$CPPFLAGS $V_INCLS"
 	AC_CHECK_HEADERS(cast.h)

 	if test "$ac_cv_header_cast_h" = "yes"; then
 		AC_MSG_CHECKING(for buggy CAST128)
 		AC_TRY_RUN(dnl
 [
 #include <cast.h>
 main()
 {
 	unsigned char key[] = {0x01,0x23,0x45,0x67,0x12};
 	unsigned char in[] = {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF};
 	unsigned char out[sizeof(in)];
 	unsigned char ok[] = {0x7A,0xC8,0x16,0xD1,0x6E,0x9B,0x30,0x2E};
 	CAST_KEY ks;
 	CAST_set_key(&ks, sizeof(key), key);
 	CAST_ecb_encrypt(in, out, &ks, CAST_ENCRYPT);
 	if (memcmp(out, ok, sizeof(ok)) != 0)
 		return 0;
 	else
 		return 1;
 }],
 			[buggy_cast128=yes],
 			[buggy_cast128=no],
 			[buggy_cast128="cross-compiling, assume yes"])
 		AC_MSG_RESULT($buggy_cast128)
 		if test "$buggy_cast128" != no; then
 			echo "NOTE: SSLeay 0.9.0b has a bug in CAST128 en/decoding routine."
 			echo "disabling CAST128 support."
 			AC_DEFINE(HAVE_BUGGY_CAST128)
 		fi
 	fi

 	CPPFLAGS=$bak_CPPFLAGS
 fi
 ])
 AC_CHECK_HEADERS(rc5.h)

 AC_SUBST(V_CCOPT)
 AC_SUBST(V_GROUP)
 AC_SUBST(V_INCLS)
 AC_SUBST(V_PCAPDEP)
 AC_SUBST(LOCALSRC)

 AC_PROG_INSTALL

 AC_CONFIG_HEADER(config.h)

 AC_OUTPUT_COMMANDS([if test -f .devel; then
 	echo timestamp > stamp-h
 	cat Makefile-devel-adds >> Makefile
 	make depend
 fi])
 AC_OUTPUT(Makefile)
 exit 0
	dnl @(#) $Header: /tcpdump/master/tcpdump/configure.in,v 1.140 2001-06-28 10:27:09 guy Exp $ (LBL)
	dnl
	dnl Copyright (c) 1994, 1995, 1996, 1997
	dnl The Regents of the University of California. All rights reserved.
	dnl
	dnl Process this file with autoconf to produce a configure script.
	dnl

	AC_REVISION($Revision: 1.140 $)
	AC_PREREQ(2.13)
	AC_INIT(tcpdump.c)

	AC_CANONICAL_SYSTEM

	AC_LBL_C_INIT(V_CCOPT, V_INCLS)
	AC_C_INLINE
	AC_C___ATTRIBUTE__

	AC_CHECK_HEADERS(fcntl.h rpc/rpcent.h netinet/if_ether.h)
	AC_HEADER_TIME

	case "$target_os" in

	linux*)
	AC_MSG_CHECKING(Linux kernel version)
	if test "$cross_compiling" = yes; then
	AC_CACHE_VAL(ac_cv_linux_vers,
	ac_cv_linux_vers=unknown)
	else
	AC_CACHE_VAL(ac_cv_linux_vers,
	ac_cv_linux_vers=`uname -r 2>&1 \| \
	sed -n -e '$s/.* //' -e '$s/\..*//p'`)
	fi
	AC_MSG_RESULT($ac_cv_linux_vers)
	if test $ac_cv_linux_vers = unknown ; then
	AC_MSG_ERROR(cannot determine linux version when cross-compiling)
	fi
	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
	;;

	*)
	;;
	esac


	AC_CHECK_HEADERS(smi.h)
	AC_CHECK_LIB(smi, smiInit)
	if test "$ac_cv_header_smi_h" = yes -a "$ac_cv_lib_smi_smiInit" = yes
	then
	AC_MSG_CHECKING([whether to enable libsmi])
	AC_TRY_RUN([ /* libsmi available check */
	#include <smi.h>
	main()
	{
	int current, revision, age, n;
	const int required = 2;
	if (smiInit(""))
	exit(1);
	if (strcmp(SMI_LIBRARY_VERSION, smi_library_version))
	exit(2);
	n = sscanf(smi_library_version, "%d:%d:%d", &current, &revision, &age);
	if (n != 3)
	exit(3);
	if (required < current - age \|\| required > current)
	exit(4);
	exit(0);
	}
	],
	[ AC_MSG_RESULT(yes)
	AC_DEFINE(LIBSMI)
	libsmi=yes],
	dnl autoconf documentation says that $? contains the exit value.
	dnl reality is that it does not. We leave this in just in case
	dnl autoconf ever comes back to match the documentation.
	[ case $? in
	1) AC_MSG_RESULT(no - smiInit failed) ;;
	2) AC_MSG_RESULT(no - header/library version mismatch) ;;
	3) AC_MSG_RESULT(no - can't determine library version) ;;
	4) AC_MSG_RESULT(no - too old) ;;
	*) AC_MSG_RESULT(no) ;;
	esac
	libsmi=no],
	[ AC_MSG_RESULT(not when cross-compiling)
	libsmi=no]
	)
	fi

	CFLAGS="$CFLAGS -Dss_family=__ss_family -Dss_len=__ss_len"
	AC_MSG_CHECKING([whether to enable ipv6])
	AC_ARG_ENABLE(ipv6,
	[ --enable-ipv6 enable ipv6 (with ipv4) support
	--disable-ipv6 disable ipv6 support],
	[ case "$enableval" in
	yes) AC_MSG_RESULT(yes)
	LOCALSRC="print-ip6.c print-ip6opts.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c $LOCALSRC"
	AC_DEFINE(INET6)
	ipv6=yes
	;;
	*)
	AC_MSG_RESULT(no)
	ipv6=no
	;;
	esac ],

	AC_TRY_RUN([ /* AF_INET6 available check */
	#include <sys/types.h>
	#include <sys/socket.h>
	main()
	{
	if (socket(AF_INET6, SOCK_STREAM, 0) < 0)
	exit(1);
	else
	exit(0);
	}
	],
	[ AC_MSG_RESULT(yes)
	LOCALSRC="print-ip6.c print-ip6opts.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c $LOCALSRC"
	AC_DEFINE(INET6)
	ipv6=yes],
	[ AC_MSG_RESULT(no)
	ipv6=no],
	[ AC_MSG_RESULT(no)
	ipv6=no]
	))

	ipv6type=unknown
	ipv6lib=none
	ipv6trylibc=no

	if test "$ipv6" = "yes"; then
	AC_MSG_CHECKING([ipv6 stack type])
	for i in inria kame linux-glibc linux-libinet6 toshiba v6d zeta; do
	case $i in
	inria)
	dnl http://www.kame.net/
	AC_EGREP_CPP(yes, [dnl
	#include <netinet/in.h>
	#ifdef IPV6_INRIA_VERSION
	yes
	#endif],
	[ipv6type=$i;
	CFLAGS="-DINET6 $CFLAGS"])
	;;
	kame)
	dnl http://www.kame.net/
	AC_EGREP_CPP(yes, [dnl
	#include <netinet/in.h>
	#ifdef __KAME__
	yes
	#endif],
	[ipv6type=$i;
	ipv6lib=inet6;
	ipv6libdir=/usr/local/v6/lib;
	ipv6trylibc=yes;
	CFLAGS="-DINET6 $CFLAGS"])
	;;
	linux-glibc)
	dnl http://www.v6.linux.or.jp/
	AC_EGREP_CPP(yes, [dnl
	#include <features.h>
	#if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
	yes
	#endif],
	[ipv6type=$i;
	CFLAGS="-DINET6 $CFLAGS"])
	;;
	linux-libinet6)
	dnl http://www.v6.linux.or.jp/
	if test -d /usr/inet6 -o -f /usr/include/netinet/ip6.h; then
	ipv6type=$i
	ipv6lib=inet6
	ipv6libdir=/usr/inet6/lib
	ipv6trylibc=yes;
	CFLAGS="-DINET6 -I/usr/inet6/include $CFLAGS"
	fi
	;;
	toshiba)
	AC_EGREP_CPP(yes, [dnl
	#include <sys/param.h>
	#ifdef _TOSHIBA_INET6
	yes
	#endif],
	[ipv6type=$i;
	ipv6lib=inet6;
	ipv6libdir=/usr/local/v6/lib;
	CFLAGS="-DINET6 $CFLAGS"])
	;;
	v6d)
	AC_EGREP_CPP(yes, [dnl
	#include </usr/local/v6/include/sys/v6config.h>
	#ifdef __V6D__
	yes
	#endif],
	[ipv6type=$i;
	ipv6lib=v6;
	ipv6libdir=/usr/local/v6/lib;
	CFLAGS="-I/usr/local/v6/include $CFLAGS"])
	;;
	zeta)
	AC_EGREP_CPP(yes, [dnl
	#include <sys/param.h>
	#ifdef _ZETA_MINAMI_INET6
	yes
	#endif],
	[ipv6type=$i;
	ipv6lib=inet6;
	ipv6libdir=/usr/local/v6/lib;
	CFLAGS="-DINET6 $CFLAGS"])
	;;
	esac
	if test "$ipv6type" != "unknown"; then
	break
	fi
	done
	AC_MSG_RESULT($ipv6type)
	fi

	if test "$ipv6" = "yes" -a "$ipv6lib" != "none"; then
	if test -d $ipv6libdir -a -f $ipv6libdir/lib$ipv6lib.a; then
	LIBS="-L$ipv6libdir -l$ipv6lib $LIBS"
	echo "You have $ipv6lib library, using it"
	else
	if test "$ipv6trylibc" = "yes"; then
	echo "You do not have $ipv6lib library, using libc"
	else
	echo 'Fatal: no $ipv6lib library found. cannot continue.'
	echo "You need to fetch lib$ipv6lib.a from appropriate"
	echo 'ipv6 kit and compile beforehand.'
	exit 1
	fi
	fi
	fi


	if test "$ipv6" = "yes"; then
	AC_SEARCH_LIBS(getaddrinfo, socket, [dnl
	AC_MSG_CHECKING(getaddrinfo bug)
	AC_TRY_RUN([
	#include <sys/types.h>
	#include <netdb.h>
	#include <string.h>
	#include <sys/socket.h>
	#include <netinet/in.h>

	main()
	{
	int passive, gaierr, inet4 = 0, inet6 = 0;
	struct addrinfo hints, ai, aitop;
	char straddr[INET6_ADDRSTRLEN], strport[16];

	for (passive = 0; passive <= 1; passive++) {
	memset(&hints, 0, sizeof(hints));
	hints.ai_family = AF_UNSPEC;
	hints.ai_flags = passive ? AI_PASSIVE : 0;
	hints.ai_socktype = SOCK_STREAM;
	if ((gaierr = getaddrinfo(NULL, "54321", &hints, &aitop)) != 0) {
	(void)gai_strerror(gaierr);
	goto bad;
	}
	for (ai = aitop; ai; ai = ai->ai_next) {
	if (ai->ai_addr == NULL \|\|
	ai->ai_addrlen == 0 \|\|
	getnameinfo(ai->ai_addr, ai->ai_addrlen,
	straddr, sizeof(straddr), strport, sizeof(strport),
	NI_NUMERICHOST\|NI_NUMERICSERV) != 0) {
	goto bad;
	}
	switch (ai->ai_family) {
	case AF_INET:
	if (strcmp(strport, "54321") != 0) {
	goto bad;
	}
	if (passive) {
	if (strcmp(straddr, "0.0.0.0") != 0) {
	goto bad;
	}
	} else {
	if (strcmp(straddr, "127.0.0.1") != 0) {
	goto bad;
	}
	}
	inet4++;
	break;
	case AF_INET6:
	if (strcmp(strport, "54321") != 0) {
	goto bad;
	}
	if (passive) {
	if (strcmp(straddr, "::") != 0) {
	goto bad;
	}
	} else {
	if (strcmp(straddr, "::1") != 0) {
	goto bad;
	}
	}
	inet6++;
	break;
	case AF_UNSPEC:
	goto bad;
	break;
	#ifdef AF_UNIX
	case AF_UNIX:
	#else
	#ifdef AF_LOCAL
	case AF_LOCAL:
	#endif
	#endif
	default:
	/* another family support? */
	break;
	}
	}
	}

	/* supported family should be 2, unsupported family should be 0 */
	if (!(inet4 == 0 \|\| inet4 == 2))
	goto bad;
	if (!(inet6 == 0 \|\| inet6 == 2))
	goto bad;

	if (aitop)
	freeaddrinfo(aitop);
	exit(0);

	bad:
	if (aitop)
	freeaddrinfo(aitop);
	exit(1);
	}
	],
	AC_MSG_RESULT(good)
	buggygetaddrinfo=no,
	AC_MSG_RESULT(buggy)
	buggygetaddrinfo=yes,
	AC_MSG_RESULT(buggy)
	buggygetaddrinfo=yes)], [buggygetaddrinfo=yes])

	if test "$buggygetaddrinfo" = "yes"; then
	if test "$ipv6type" != "linux"; then
	echo 'Fatal: You must get working getaddrinfo() function.'
	echo ' or you can specify "--disable-ipv6"'.
	exit 1
	else
	echo 'Warning: getaddrinfo() implementation on your system seems be buggy.'
	echo ' Better upgreade your system library to newest version'
	echo ' of GNU C library (aka glibc).'
	fi
	fi
	AC_REPLACE_FUNCS(getaddrinfo getnameinfo)
	fi
	dnl AC_TRY_COMPILE(inet_ntop inet_pton inet_aton)
	AC_MSG_CHECKING(for inet_ntop)
	AC_TRY_COMPILE([#include <sys/types.h>
	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <arpa/inet.h>], [char src[4], dst[128];
	inet_ntop(AF_INET, src, dst, sizeof(dst));],
	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
	AC_REPLACE_FUNCS(inet_ntop)])
	AC_MSG_CHECKING(for inet_pton)
	AC_TRY_COMPILE([#include <sys/types.h>
	#include <sys/socket.h>
	#include <netinet/in.h>
	#include <arpa/inet.h>], [char src[128], dst[4];
	inet_pton(AF_INET, src, dst);],
	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
	AC_REPLACE_FUNCS(inet_pton)])
	AC_MSG_CHECKING(for inet_aton)
	AC_TRY_COMPILE([#include <sys/types.h>
	#include <netinet/in.h>
	#include <arpa/inet.h>], [char src[128];
	struct in_addr dst;
	inet_aton(src, &dst);],
	[AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)
	AC_REPLACE_FUNCS(inet_aton)])

	dnl portability macros for getaddrinfo/getnameinfo
	dnl
	dnl Check for sa_len
	AC_CHECK_SA_LEN(ac_cv_sockaddr_has_sa_len)
	if test "$ac_cv_sockaddr_has_sa_len" = no; then
	missing_includes=yes
	fi

	dnl
	dnl check sizeof basic types.
	dnl They're very likely to be wrong for cross-compiling.
	AC_CHECK_SIZEOF(char, 1)
	AC_CHECK_SIZEOF(short, 2)
	AC_CHECK_SIZEOF(int, 4)
	AC_CHECK_SIZEOF(long, 4)

	dnl
	dnl Checks for u_intXX_t
	dnl AC_CHECK_BITTYPES(ac_cv_bittypes)
	dnl if test "$ac_cv_bittypes" = no; then
	dnl missing_includes=yes
	dnl fi

	dnl
	dnl Checks for addrinfo structure
	AC_STRUCT_ADDRINFO(ac_cv_addrinfo)
	if test "$ac_cv_addrinfo" = no; then
	missing_includes=yes
	fi

	dnl
	dnl Checks for NI_MAXSERV
	AC_NI_MAXSERV(ac_cv_maxserv)
	if test "$ac_cv_maxserv" = no; then
	missing_includes=yes
	fi

	dnl
	dnl Checks for NI_NAMEREQD
	AC_NI_NAMEREQD(ac_cv_namereqd)
	if test "$ac_cv_namereqd" = no; then
	missing_includes=yes
	fi

	dnl
	dnl Checks for sockaddr_storage structure
	AC_STRUCT_SA_STORAGE(ac_cv_sa_storage)
	if test "$ac_cv_sa_storage" = no; then
	missing_includes=yes
	fi

	dnl
	dnl Checks for IN[6]ADDRSZ
	AC_CHECK_ADDRSZ(ac_cv_addrsz)
	if test "$ac_cv_addrsz" = no; then
	missing_includes=yes
	fi

	dnl
	dnl Checks for RES_USE_INET6
	AC_CHECK_RES_USE_INET6(ac_cv_res_inet6)
	if test "$ac_cv_res_inet6" = no; then
	missing_includes=yes
	fi

	dnl
	dnl Checks for res_state_ext structure
	AC_STRUCT_RES_STATE_EXT(ac_cv_res_state_ext)
	if test "$ac_cv_res_state_ext" = no; then
	missing_includes=yes
	fi

	dnl
	dnl Checks if res_state structure has nsort member.
	AC_STRUCT_RES_STATE(ac_cv_res_state)

	dnl
	dnl set additional include path if necessary
	if test "$missing_includes" = "yes"; then
	CPPFLAGS="$CPPFLAGS -I\$(srcdir)/missing"
	V_INCLS="$V_INCLS -I\$(srcdir)/missing"
	fi


	AC_REPLACE_FUNCS(vfprintf strcasecmp strlcat strlcpy strdup)
	AC_CHECK_FUNCS(ether_ntohost, [
	AC_CACHE_CHECK(for buggy ether_ntohost, ac_cv_buggy_ether_ntohost, [
	AC_TRY_RUN([
	#include <netdb.h>
	#include <sys/types.h>
	#include <sys/param.h>
	#include <sys/socket.h>
	#include <net/ethernet.h>

	int
	main(int argc, char **argv)
	{
	u_char ea[6] = { 0xff, 0xff, 0xff, 0xff, 0xff };
	char name[MAXHOSTNAMELEN];

	ether_ntohost(name, (struct ether_addr *)ea);
	exit(0);
	}
	], [ac_cv_buggy_ether_ntohost=no],
	[ac_cv_buggy_ether_ntohost=yes],
	[ac_cv_buggy_ether_ntohost=not while cross-compiling])])
	if test "$ac_cv_buggy_ether_ntohost" = "no"; then
	AC_DEFINE(USE_ETHER_NTOHOST)
	fi
	])
	AC_CHECK_FUNCS(setlinebuf)

	usegetipnodeby=yes
	AC_CHECK_FUNCS(getipnodebyname getipnodebyaddr freeaddrinfo,
	[], [usegetipnodeby=no])
	if test $usegetipnodeby = yes; then
	AC_DEFINE(USE_GETIPNODEBY)
	fi

	needsnprintf=no
	AC_CHECK_FUNCS(vsnprintf snprintf,,
	[needsnprintf=yes])
	if test $needsnprintf = yes; then
	LIBOBJS="$LIBOBJS snprintf.o"
	fi

	AC_CHECK_LIB(dnet, main)
	AC_CHECK_LIB(rpc, main)
	AC_CHECK_LIB(nsl, getrpcbynumber)
	dnl AC_CHECK_LIB(z, uncompress)
	dnl AC_CHECK_HEADERS(zlib.h)

	AC_LBL_TYPE_SIGNAL

	AC_LBL_LIBPCAP(V_PCAPDEP, V_INCLS)

	AC_REPLACE_FUNCS(bpf_dump) dnl moved to libpcap in 0.6

	V_GROUP=0
	if test -f /etc/group -a ! -z "`grep '^wheel:' /etc/group`" ; then
	V_GROUP=wheel
	fi
	case "$target_os" in

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

	irix*)
	V_GROUP=sys
	;;

	osf*)
	V_GROUP=system
	;;

	solaris*)
	V_GROUP=sys
	;;
	esac

	if test -f /dev/bpf0 ; then
	V_GROUP=bpf
	fi

	AC_LBL_CHECK_TYPE(u_int8_t, u_char)
	AC_LBL_CHECK_TYPE(int16_t, short)
	AC_LBL_CHECK_TYPE(u_int16_t, u_short)
	AC_LBL_CHECK_TYPE(int32_t, int)
	AC_LBL_CHECK_TYPE(u_int32_t, u_int)

	AC_LBL_DEVEL(V_CCOPT)

	AC_LBL_SOCKADDR_SA_LEN

	AC_LBL_UNALIGNED_ACCESS

	AC_VAR_H_ERRNO

	AC_ARG_WITH(crypto, [ --without-crypto disable crypto support],
	[], [
	AC_MSG_CHECKING(for SSLeay)
	ac_cv_ssleay_path=no
	incdir=no
	for dir in /usr /usr/local /usr/local/ssl /usr/pkg; do
	if test -d $dir/lib -a -f $dir/lib/libcrypto.a; then
	ac_cv_ssleay_path=$dir
	fi
	if test -d $dir/include/openssl -a -f $dir/include/openssl/des.h; then
	incdir="-I$dir/include"
	fi
	if test "$ac_cv_ssleay_path" != "no" -a "$incdir" != "no"; then
	break;
	else
	ac_cv_ssleay_path=no
	incdir=no
	fi
	done
	AC_MSG_RESULT($ac_cv_ssleay_path)
	if test "$ac_cv_ssleay_path" != no; then
	V_INCLS="$V_INCLS $incdir"
	LDFLAGS="-L$dir/lib $LDFLAGS"
	if test -f $ac_cv_ssleay_path/lib/libRSAglue.a; then
	LIBS="$LIBS -lRSAglue"
	fi
	if test -f $ac_cv_ssleay_path/lib/librsaref.a; then
	LIBS="$LIBS -lrsaref"
	fi
	AC_CHECK_LIB(crypto, des_cbc_encrypt)

	bak_CPPFLAGS=$CPPFLAGS
	CPPFLAGS="$CPPFLAGS $V_INCLS"
	AC_CHECK_HEADERS(cast.h)

	if test "$ac_cv_header_cast_h" = "yes"; then
	AC_MSG_CHECKING(for buggy CAST128)
	AC_TRY_RUN(dnl
	[
	#include <cast.h>
	main()
	{
	unsigned char key[] = {0x01,0x23,0x45,0x67,0x12};
	unsigned char in[] = {0x01,0x23,0x45,0x67,0x89,0xAB,0xCD,0xEF};
	unsigned char out[sizeof(in)];
	unsigned char ok[] = {0x7A,0xC8,0x16,0xD1,0x6E,0x9B,0x30,0x2E};
	CAST_KEY ks;
	CAST_set_key(&ks, sizeof(key), key);
	CAST_ecb_encrypt(in, out, &ks, CAST_ENCRYPT);
	if (memcmp(out, ok, sizeof(ok)) != 0)
	return 0;
	else
	return 1;
	}],
	[buggy_cast128=yes],
	[buggy_cast128=no],
	[buggy_cast128="cross-compiling, assume yes"])
	AC_MSG_RESULT($buggy_cast128)
	if test "$buggy_cast128" != no; then
	echo "NOTE: SSLeay 0.9.0b has a bug in CAST128 en/decoding routine."
	echo "disabling CAST128 support."
	AC_DEFINE(HAVE_BUGGY_CAST128)
	fi
	fi

	CPPFLAGS=$bak_CPPFLAGS
	fi
	])
	AC_CHECK_HEADERS(rc5.h)

	AC_SUBST(V_CCOPT)
	AC_SUBST(V_GROUP)
	AC_SUBST(V_INCLS)
	AC_SUBST(V_PCAPDEP)
	AC_SUBST(LOCALSRC)

	AC_PROG_INSTALL

	AC_CONFIG_HEADER(config.h)

	AC_OUTPUT_COMMANDS([if test -f .devel; then
	echo timestamp > stamp-h
	cat Makefile-devel-adds >> Makefile
	make depend
	fi])
	AC_OUTPUT(Makefile)
	exit 0