diff --git a/src/basic_oserializer.cpp b/src/basic_oserializer.cpp
new file mode 100644
index 0000000..afe08c4
--- /dev/null
+++ b/src/basic_oserializer.cpp
@@ -0,0 +1,34 @@
+/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
+// basic_oserializer.cpp:
+
+// (C) Copyright 2002 Robert Ramey - http://www.rrsd.com . 
+// Use, modification and distribution is subject to the Boost Software
+// License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at
+// http://www.boost.org/LICENSE_1_0.txt)
+
+//  See http://www.boost.org for updates, documentation, and revision history.
+
+#include <cstddef> // NULL
+
+#define BOOST_ARCHIVE_SOURCE
+#include <boost/serialization/config.hpp>
+#include <boost/archive/detail/basic_oserializer.hpp>
+
+namespace boost {
+namespace archive {
+namespace detail {
+
+BOOST_ARCHIVE_DECL 
+basic_oserializer::basic_oserializer(
+        const boost::serialization::extended_type_info & eti
+) :
+    basic_serializer(eti), 
+    m_bpos(NULL)
+{}
+
+BOOST_ARCHIVE_DECL 
+basic_oserializer::~basic_oserializer(){}
+
+} // namespace detail
+} // namespace archive
+} // namespace boost