+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char socket ();
+int
+main ()
+{
+return socket ();
+ ;
+ return 0;
+}
+_ACEOF
+if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_lib_socket_socket=yes
+else
+ ac_cv_lib_socket_socket=no
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext conftest.$ac_ext
+LIBS=$ac_check_lib_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_socket_socket" >&5
+$as_echo "$ac_cv_lib_socket_socket" >&6; }
+if test "x$ac_cv_lib_socket_socket" = xyes; then :
+ LIBS="-lsocket -lnsl $LIBS"
+fi
+
+fi
+
+ # DLPI needs putmsg under HPUX so test for -lstr while we're at it
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing putmsg" >&5
+$as_echo_n "checking for library containing putmsg... " >&6; }
+if ${ac_cv_search_putmsg+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char putmsg ();
+int
+main ()
+{
+return putmsg ();
+ ;
+ return 0;
+}
+_ACEOF
+for ac_lib in '' str; do
+ if test -z "$ac_lib"; then
+ ac_res="none required"
+ else
+ ac_res=-l$ac_lib
+ LIBS="-l$ac_lib $ac_func_search_save_LIBS"
+ fi
+ if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_search_putmsg=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext
+ if ${ac_cv_search_putmsg+:} false; then :
+ break
+fi
+done
+if ${ac_cv_search_putmsg+:} false; then :
+
+else
+ ac_cv_search_putmsg=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_putmsg" >&5
+$as_echo "$ac_cv_search_putmsg" >&6; }
+ac_res=$ac_cv_search_putmsg
+if test "$ac_res" != no; then :
+ test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+
+fi
+
+
+
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether to enable ipv6" >&5
+$as_echo_n "checking whether to enable ipv6... " >&6; }
+# Check whether --enable-ipv6 was given.
+if test "${enable_ipv6+set}" = set; then :
+ enableval=$enable_ipv6; case "$enableval" in
+yes) { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ LOCALSRC="print-ip6.c print-ip6opts.c print-mobility.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c print-babel.c $LOCALSRC"
+
+$as_echo "#define INET6 1" >>confdefs.h
+
+ ipv6=yes
+ ;;
+*)
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ ipv6=no
+ ;;
+ esac
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+ /* AF_INET6 available check */
+#include <sys/types.h>
+#include <sys/socket.h>
+#include <netinet/in.h>
+#ifdef AF_INET6
+void
+foo(struct in6_addr *addr)
+{
+ memset(addr, 0, sizeof (struct in6_addr));
+}
+#else
+#error "AF_INET6 not defined"
+#endif
+
+
+_ACEOF
+if ac_fn_c_try_compile "$LINENO"; then :
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
+$as_echo "yes" >&6; }
+ LOCALSRC="print-ip6.c print-ip6opts.c print-mobility.c print-ripng.c print-icmp6.c print-frag6.c print-rt6.c print-ospf6.c print-dhcp6.c print-babel.c $LOCALSRC"
+
+$as_echo "#define INET6 1" >>confdefs.h
+
+ ipv6=yes
+else
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
+$as_echo "no" >&6; }
+ ipv6=no
+fi
+rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
+fi
+
+
+ipv6type=unknown
+ipv6lib=none
+ipv6trylibc=no
+
+if test "$ipv6" = "yes"; then
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking ipv6 stack type" >&5
+$as_echo_n "checking ipv6 stack type... " >&6; }
+ for i in inria kame linux-glibc linux-libinet6 toshiba v6d zeta; do
+ case $i in
+ inria)
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <netinet/in.h>
+#ifdef IPV6_INRIA_VERSION
+yes
+#endif
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "yes" >/dev/null 2>&1; then :
+ ipv6type=$i;
+ CFLAGS="-DINET6 $CFLAGS"
+fi
+rm -f conftest*
+
+ ;;
+ kame)
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <netinet/in.h>
+#ifdef __KAME__
+yes
+#endif
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "yes" >/dev/null 2>&1; then :
+ ipv6type=$i;
+ ipv6lib=inet6;
+ ipv6libdir=/usr/local/v6/lib;
+ ipv6trylibc=yes;
+ CFLAGS="-DINET6 $CFLAGS"
+fi
+rm -f conftest*
+
+ ;;
+ linux-glibc)
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <features.h>
+#if defined(__GLIBC__) && __GLIBC__ >= 2 && __GLIBC_MINOR__ >= 1
+yes
+#endif
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "yes" >/dev/null 2>&1; then :
+ ipv6type=$i;
+ CFLAGS="-DINET6 $CFLAGS"
+fi
+rm -f conftest*
+
+ ;;
+ linux-libinet6)
+ if test -d /usr/inet6 -o -f /usr/include/netinet/ip6.h; then
+ ipv6type=$i
+ ipv6lib=inet6
+ ipv6libdir=/usr/inet6/lib
+ ipv6trylibc=yes;
+ CFLAGS="-DINET6 -I/usr/inet6/include $CFLAGS"
+ fi
+ ;;
+ toshiba)
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/param.h>
+#ifdef _TOSHIBA_INET6
+yes
+#endif
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "yes" >/dev/null 2>&1; then :
+ ipv6type=$i;
+ ipv6lib=inet6;
+ ipv6libdir=/usr/local/v6/lib;
+ CFLAGS="-DINET6 $CFLAGS"
+fi
+rm -f conftest*
+
+ ;;
+ v6d)
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include </usr/local/v6/include/sys/v6config.h>
+#ifdef __V6D__
+yes
+#endif
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "yes" >/dev/null 2>&1; then :
+ ipv6type=$i;
+ ipv6lib=v6;
+ ipv6libdir=/usr/local/v6/lib;
+ CFLAGS="-I/usr/local/v6/include $CFLAGS"
+fi
+rm -f conftest*
+
+ ;;
+ zeta)
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+#include <sys/param.h>
+#ifdef _ZETA_MINAMI_INET6
+yes
+#endif
+_ACEOF
+if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
+ $EGREP "yes" >/dev/null 2>&1; then :
+ ipv6type=$i;
+ ipv6lib=inet6;
+ ipv6libdir=/usr/local/v6/lib;
+ CFLAGS="-DINET6 $CFLAGS"
+fi
+rm -f conftest*
+
+ ;;
+ esac
+ if test "$ipv6type" != "unknown"; then
+ break
+ fi
+ done
+ { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ipv6type" >&5
+$as_echo "$ipv6type" >&6; }
+fi
+
+if test "$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
+ #
+ # XXX - on Tru64 UNIX 5.1, there is no "getaddrinfo()"
+ # function in libc; there are "ngetaddrinfo()" and
+ # "ogetaddrinfo()" functions, and <netdb.h> #defines
+ # "getaddrinfo" to be either "ngetaddrinfo" or
+ # "ogetaddrinfo", depending on whether _SOCKADDR_LEN
+ # or _XOPEN_SOURCE_EXTENDED are defined or not.
+ #
+ # So this test doesn't work on Tru64 5.1, and possibly
+ # on other 5.x releases. This causes the configure
+ # script to become confused, and results in libpcap
+ # being unbuildable.
+ #
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking for library containing getaddrinfo" >&5
+$as_echo_n "checking for library containing getaddrinfo... " >&6; }
+if ${ac_cv_search_getaddrinfo+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ ac_func_search_save_LIBS=$LIBS
+cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+/* Override any GCC internal prototype to avoid an error.
+ Use char because int might match the return type of a GCC
+ builtin and then its argument prototype would still apply. */
+#ifdef __cplusplus
+extern "C"
+#endif
+char getaddrinfo ();
+int
+main ()
+{
+return getaddrinfo ();
+ ;
+ return 0;
+}
+_ACEOF
+for ac_lib in '' socket; do
+ if test -z "$ac_lib"; then
+ ac_res="none required"
+ else
+ ac_res=-l$ac_lib
+ LIBS="-l$ac_lib $ac_func_search_save_LIBS"
+ fi
+ if ac_fn_c_try_link "$LINENO"; then :
+ ac_cv_search_getaddrinfo=$ac_res
+fi
+rm -f core conftest.err conftest.$ac_objext \
+ conftest$ac_exeext
+ if ${ac_cv_search_getaddrinfo+:} false; then :
+ break
+fi
+done
+if ${ac_cv_search_getaddrinfo+:} false; then :
+
+else
+ ac_cv_search_getaddrinfo=no
+fi
+rm conftest.$ac_ext
+LIBS=$ac_func_search_save_LIBS
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_search_getaddrinfo" >&5
+$as_echo "$ac_cv_search_getaddrinfo" >&6; }
+ac_res=$ac_cv_search_getaddrinfo
+if test "$ac_res" != no; then :
+ test "$ac_res" = "none required" || LIBS="$ac_res $LIBS"
+ { $as_echo "$as_me:${as_lineno-$LINENO}: checking getaddrinfo bug" >&5
+$as_echo_n "checking getaddrinfo bug... " >&6; }
+ if ${td_cv_buggygetaddrinfo+:} false; then :
+ $as_echo_n "(cached) " >&6
+else
+ if test "$cross_compiling" = yes; then :
+ td_cv_buggygetaddrinfo=yes
+else
+ cat confdefs.h - <<_ACEOF >conftest.$ac_ext
+/* end confdefs.h. */
+
+#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;