From trunk: Allow inclusion of typeof.hpp for compilers (borland) that does not support typeof emulation or native typeof. For these compilers, BOOST_TYPEOF_EMULATION_UNSUPPORTED will be defined, and BOOST_TYPEOF(Expr) will always result in boost::type_of::typeof_emulation_is_unsupported_on_this_compiler

[SVN r66129]

include/boost/typeof/unsupported.hpp

@@ -0,0 +1,29 @@
+// Copyright (C) 2010 Peder Holt
+// Use, modification and distribution is subject to the Boost Software
+// License, Version 1.0. (http://www.boost.org/LICENSE_1_0.txt)
+
+#ifndef BOOST_TYPEOF_UNSUPPORTED_HPP_INCLUDED
+#define BOOST_TYPEOF_UNSUPPORTED_HPP_INCLUDED
+
+namespace boost { namespace type_of {
+    struct typeof_emulation_is_unsupported_on_this_compiler {};
+}}
+
+#define BOOST_TYPEOF(expr) boost::type_of::typeof_emulation_is_unsupported_on_this_compiler
+#define BOOST_TYPEOF_TPL BOOST_TYPEOF
+
+#define BOOST_TYPEOF_NESTED_TYPEDEF_TPL(name,expr) \
+struct name {\
+    typedef BOOST_TYPEOF_TPL(expr) type;\
+};
+
+#define BOOST_TYPEOF_NESTED_TYPEDEF(name,expr) \
+struct name {\
+    typedef BOOST_TYPEOF(expr) type;\
+};
+
+
+#define BOOST_TYPEOF_REGISTER_TYPE(x)
+#define BOOST_TYPEOF_REGISTER_TEMPLATE(x, params)
+
+#endif