1 files changed, 32 insertions, 0 deletions
diff --git a/src/topic_filter.hpp b/src/topic_filter.hpp
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+++ b/src/topic_filter.hpp
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+/*
+    Copyright (c) 2012 250bpm s.r.o.
+    Copyright (c) 2012 Other contributors as noted in the AUTHORS file
+
+    This file is part of Crossroads I/O project.
+
+    Crossroads I/O is free software; you can redistribute it and/or modify it
+    under the terms of the GNU Lesser General Public License as published by
+    the Free Software Foundation; either version 3 of the License, or
+    (at your option) any later version.
+
+    Crossroads is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU Lesser General Public License for more details.
+
+    You should have received a copy of the GNU Lesser General Public License
+    along with this program.  If not, see <http://www.gnu.org/licenses/>.
+*/
+
+#ifndef __XS_TOPIC_FILTER_HPP_INCLUDED__
+#define __XS_TOPIC_FILTER_HPP_INCLUDED__
+
+namespace xs
+{
+
+    //  Canonical extension object.
+    extern void *topic_filter;
+
+}
+
+#endif