Commented out export of missing CRML source file to avoid build error.
There are no known side effects of this file being missing, so this seems a reasonable way to avoid the build error.
#ifndef BOOST_ARCHIVE_POLYMORPHIC_XML_IARCHIVE_HPP
#define BOOST_ARCHIVE_POLYMORPHIC_XML_IARCHIVE_HPP
// MS compatible compilers support #pragma once
#if defined(_MSC_VER) && (_MSC_VER >= 1020)
# pragma once
#endif
/////////1/////////2/////////3/////////4/////////5/////////6/////////7/////////8
// polymorphic_xml_iarchive.hpp
// (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 <boost/config.hpp>
#include <boost/archive/xml_iarchive.hpp>
#include <boost/archive/detail/polymorphic_iarchive_impl.hpp>
namespace boost {
namespace archive {
typedef detail::polymorphic_iarchive_impl<
xml_iarchive_impl<xml_iarchive>
> polymorphic_xml_iarchive;
} // namespace archive
} // namespace boost
// required by smart_cast for compilers not implementing
// partial template specialization
BOOST_BROKEN_COMPILER_TYPE_TRAITS_SPECIALIZATION(
boost::archive::polymorphic_xml_iarchive
)
#endif // BOOST_ARCHIVE_POLYMORPHIC_XML_IARCHIVE_HPP