Imported existing code

libraries/include/boost/python/detail/force_instantiate.hpp

@@ -0,0 +1,32 @@
+// Copyright David Abrahams 2002.
+// Distributed under 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)
+#ifndef FORCE_INSTANTIATE_DWA200265_HPP
+# define FORCE_INSTANTIATE_DWA200265_HPP
+
+namespace boost { namespace python { namespace detail { 
+
+// Allows us to force the argument to be instantiated without
+// incurring unused variable warnings
+
+# if !defined(BOOST_MSVC) || BOOST_MSVC < 1300 || _MSC_FULL_VER > 13102196
+
+template <class T>
+inline void force_instantiate(T const&) {}
+
+# else
+
+#  pragma optimize("g", off)
+inline void force_instantiate_impl(...) {}
+#  pragma optimize("", on)
+template <class T>
+inline void force_instantiate(T const& x)
+{
+    detail::force_instantiate_impl(&x);
+}
+# endif
+
+}}} // namespace boost::python::detail
+
+#endif // FORCE_INSTANTIATE_DWA200265_HPP