Patch #401196: Configuration machinery for IPv6.
Contributed by Jun-ichiro "itojun" Hagino. get{addr,name}info emulation
code taken from WIDE.
diff --git a/acconfig.h b/acconfig.h
index 346f368..075b10d 100644
--- a/acconfig.h
+++ b/acconfig.h
@@ -35,6 +35,18 @@
/* Define this if your time.h defines altzone */
#undef HAVE_ALTZONE
+/* Define if --enable-ipv6 is specified */
+#undef ENABLE_IPV6
+
+/* Define if sockaddr has sa_len member */
+#undef HAVE_SOCKADDR_SA_LEN
+
+/* struct addrinfo (netdb.h) */
+#undef HAVE_ADDRINFO
+
+/* struct sockaddr_storage (sys/socket.h) */
+#undef HAVE_SOCKADDR_STORAGE
+
/* Defined when any dynamic module loading is enabled */
#undef HAVE_DYNAMIC_LOADING