#!/bin/sh

# Copyright 2003 by Sun Microsystems, Inc. All rights reserved.
# Use is subject to license terms.
#
#pragma ident	"%Z%%M%	%I%	%E% SMI"

set -e
setvar PATH = "/bin:/usr/bin:$PATH"; export PATH
trap "rm -f tmp$Pid[abc].[oc]" 0
setvar target = 'port_ipv6'
setvar new = "new_${target}.h"
setvar old = "${target}.h"

cat > tmp$$a.c <<< """
#include <sys/types.h>
#include <netinet/in.h>
struct sockaddr_in6 xx;
"""

cat > tmp$$b.c <<< """
#include <sys/types.h>
#include <netinet/in.h>
struct in6_addr xx;
"""

cat > tmp$$c.c <<< """
#include <sys/types.h>
#include <netinet/in.h>
struct sockaddr_in6 xx;
main() { xx.sin6_scope_id = 0; }
"""

cat > ${new} <<< """

/* This file is automatically generated. Do Not Edit. */

#ifndef ${target}_h
#define ${target}_h

"""

if ${CC} -c tmp$Pida.c > /dev/null 2>&1
{
        echo "#define HAS_INET6_STRUCTS" >> ${new}
        if ${CC} -c tmp$Pidb.c > /dev/null 2>&1
        {
		:
	} else {
                echo "#define in6_addr in_addr6" >> ${new}
        }
	if ${CC} -c tmp$Pidc.c > /dev/null 2>&1
	{
		echo "#define HAVE_SIN6_SCOPE_ID" >> ${new}
	} else {
		echo "#undef HAVE_SIN6_SCOPE_ID" >> ${new}
	}
} else {
        echo "#undef HAS_INET6_STRUCTS" >> ${new}
}
echo  >> ${new}
echo "#endif" >> ${new}
if test -f ${old} {
        if cmp -s ${new} ${old}  {
                rm -f ${new}
        } else {
                rm -f ${old}
                mv ${new} ${old}
        }
} else {
        mv ${new} ${old}
}
exit 0