X-Git-Url: http://git.silcnet.org/gitweb/?a=blobdiff_plain;f=configure.in.pre;h=d7722afa39c23d2f0ec7f21f2b74757b8a6561e0;hb=99865727f85eb96f5462158eed8dc935710d1a0b;hp=82762d4420d9b9d7c51a6aea4608087c61f6bf84;hpb=e4b63806b89601e4e787c239b39b1bee33e46f7e;p=silc.git

diff --git a/configure.in.pre b/configure.in.pre
index 82762d44..d7722afa 100644
--- a/configure.in.pre
+++ b/configure.in.pre
@@ -611,12 +611,49 @@ AC_ARG_WITH(win32,
 
 AM_CONDITIONAL(SILC_WIN32, test x$win32-support = xtrue)
 
+#
+# IPv6 support
+#
+AC_MSG_CHECKING(for IPv6 support)
+AC_ARG_ENABLE(ipv6,
+[  --enable-ipv6           Enable IPv6 support],
+[ case "${enableval}" in
+  yes) 
+    want_ipv6=true
+    check_ipv6=false
+    AC_DEFINE(HAVE_IPV6)
+    AC_MSG_RESULT(yes)
+    ;;
+  *)
+    want_ipv6=false
+    check_ipv6=false
+    AC_MSG_RESULT(no)
+    ;;
+esac ], check_ipv6=true)
+
+if test x$check_ipv6 = xtrue; then
+  AC_TRY_COMPILE([#ifdef HAVE_NETINET_TCP_H
+		  #include <netinet/tcp.h>
+		  #endif
+		  #ifdef HAVE_NETDB_H
+		  #include <netdb.h>
+		  #endif
+		  #include <sys/socket.h>
+		  #ifdef HAVE_NETDB_IN_H
+		  #include <netinet/in.h>
+		  #endif],
+		  [struct sockaddr_in6 sin6;
+		   int family = AF_INET6;
+		  ], [AC_DEFINE(HAVE_IPV6)
+		      AC_MSG_RESULT(yes)], [AC_MSG_RESULT(no)])
+fi
+
 #
 # Debug checking
 #
 AC_MSG_CHECKING(for enabled debugging)
 AC_ARG_ENABLE(debug,
-[  --enable-debug          Enable debugging (warning: it is heavy!)],
+[  --enable-debug          Enable debugging],
 [ case "${enableval}" in
   yes) 
     AC_MSG_RESULT(yes)