# -*- autoconf -*-

#########################################

##

# Checks for types

##

#########################################

##

#   Standard checks:

##

AC_CHECK_SIZEOF(short)

AC_CHECK_SIZEOF(int)

AC_CHECK_SIZEOF(long)

AC_CHECK_SIZEOF(long long)

AC_CHECK_SIZEOF(intmax_t)

AC_TYPE_INT8_T

AC_TYPE_INT16_T

AC_TYPE_INT32_T

AC_TYPE_INT64_T

AC_TYPE_INTMAX_T

AC_TYPE_UINT8_T

AC_TYPE_UINT16_T

AC_TYPE_UINT32_T

AC_TYPE_UINT64_T

AC_TYPE_UINTMAX_T

AC_TYPE_INTPTR_T

AC_TYPE_UINTPTR_T

##

#   Other type checks:

##

AC_CHECK_TYPES([off64_t])

AC_CHECK_TYPES([nfds_t],,,[#include <sys/poll.h>])

#   Solaris specific checks

#       (taken from Perl's configure script)

#

AC_CHECK_TYPES([Counter64],,,[#include <inet/mib2.h>])

AC_CHECK_TYPES([mib2_ipIfStatsEntry_t],,,[#include <inet/mib2.h>])

#   N.B:  The above checks could safely be moved to

#         the later 'config_types' sub-script

#

##

#   Determine the IPv6 stack type

##

#       These checks also set the LIBS/CFLAGS variables,

#       which may be needed for subsequent function tests

#

if test "x$enable_ipv6" = "xyes"; then

	v6type=unknown

	v6lib=none

	v6trylibc=no

	AC_MSG_CHECKING([[ipv6 stack type]])

	for i in v6d toshiba kame inria zeta linux-glibc linux-inet6 cygwin winsock2 generic; do

		case $i in

		v6d)

			AC_EGREP_CPP(yes, [

#include </usr/local/v6/include/sys/types.h>

#ifdef __V6D__

yes

#endif],

				[v6type=$i; v6lib=v6;

				v6libdir=/usr/local/v6/lib;

				CFLAGS="-I/usr/local/v6/include $CFLAGS"])

			;;

		toshiba)

			AC_EGREP_CPP(yes, [

#include <sys/param.h>

#ifdef _TOSHIBA_INET6

yes

#endif],

				[v6type=$i; v6lib=inet6;

				v6libdir=/usr/local/v6/lib;

				CFLAGS="-DNETSNMP_ENABLE_IPV6 $CFLAGS"])

			;;

		kame)

			AC_EGREP_CPP(yes, [

#include <netinet/in.h>

#ifdef __KAME__

yes

#endif],

				[v6type=$i; v6lib=inet6;

				v6libdir=/usr/local/v6/lib;

				v6trylibc=yes;

				CFLAGS="-DNETSNMP_ENABLE_IPV6 $CFLAGS"])

			;;

		inria)

			AC_EGREP_CPP(yes, [

#include <netinet/in.h>

#ifdef IPV6_INRIA_VERSION

yes

#endif],

				[v6type=$i;

				v6lib=dummy;

				v6libdir=none;

				v6trylibc=yes;

				CFLAGS="-DNETSNMP_ENABLE_IPV6 $CFLAGS"])

			;;

		zeta)

			AC_EGREP_CPP(yes, [

#include <sys/param.h>

#ifdef _ZETA_MINAMI_INET6

A

yes

#endif],

				[v6type=$i; v6lib=inet6;

				v6libdir=/usr/local/v6/lib;

				CFLAGS="-DNETSNMP_ENABLE_IPV6 $CFLAGS"])

			;;

		linux-glibc)

			AC_EGREP_CPP(yes, [

#include <features.h>

#if defined(__GLIBC__) && ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC_ > 2))

yes

#endif],

				[v6type=$i;

				v6lib=dummy;

				v6libdir=none;

				v6trylibc=yes;

				CFLAGS="-DNETSNMP_ENABLE_IPV6 $CFLAGS"])

			;;

		linux-inet6)

			if test -d /usr/inet6; then

				v6type=$i

				v6lib=inet6

				v6libdir=/usr/inet6/lib

				CFLAGS="-DNETSNMP_ENABLE_IPV6 $CFLAGS"

			fi

			;;

		cygwin)

			AC_EGREP_CPP(yes, [

#include <netinet/in.h>

#ifdef _CYGWIN_IN6_H

yes

#endif],

				[v6type=$i;

				v6lib=dummy;

				v6libdir=none

				v6trylibc=yes;

				CFLAGS="-DNETSNMP_ENABLE_IPV6 $CFLAGS"])

                       ;;

		winsock2)

			AC_EGREP_CPP(yes, [

#include <ws2tcpip.h>

#if defined(_WS2TCPIP_H)

yes

#endif],

				[v6type=$i;

				v6lib=dummy;

				v6libdir=none

				v6trylibc=yes;

				CFLAGS="-DNETSNMP_ENABLE_IPV6 $CFLAGS"])

			;;

		generic)

                        AC_MSG_RESULT([[postponed]])

			AC_CHECK_MEMBER([struct sockaddr_in6.sin6_addr],,,[

AC_INCLUDES_DEFAULT()

[#ifdef HAVE_SYS_PARAM_H

#include <sys/param.h>

#endif

#ifdef HAVE_SYS_SOCKET_H

#include <sys/socket.h>

#endif

#ifdef HAVE_NETINET_IN_H

#include <netinet/in.h>

#endif

]])

	                AC_MSG_CHECKING([[ipv6 stack type]])

                        if test "x$ac_cv_member_struct_sockaddr_in6_sin6_addr" = "xyes"; then

				v6type=$i

				v6lib=dummy

				v6libdir=none

				v6trylibc=yes

				CFLAGS="-DNETSNMP_ENABLE_IPV6 $CFLAGS"

                        fi

			;;

		esac

		if test "$v6type" != "unknown"; then

			break

		fi

	done

	if test "$v6lib" != "none"; then

		if test -d $v6libdir -a -f $v6libdir/lib$v6lib.a; then

			LIBS="-L$v6libdir -l$v6lib $LIBS"

			enable_ipv6="yes"

			AC_MSG_RESULT(["$v6type, $enable_ipv6, using lib$v6lib"])

		elif test "$v6trylibc" = "yes"; then

			enable_ipv6="yes"

			AC_MSG_RESULT(["$v6type, $enable_ipv6, using libc"])

		else

			AC_MSG_ERROR(no IPv6 library lib$v6lib.a found.)

			exit 1

		fi

	else

		enable_ipv6="no"

		AC_MSG_RESULT(["$v6type, $enable_ipv6"])

	fi

fi