Cannot compile posix_time.hpp on MSVC

26 Jun 2003

      If I include "boost/date_time/posix_time/posix_time.hpp" in a file and
compile the file using the Gnu C++ compiler, everything works fine.

But if I compile the file using Miscrosoft Visual C++, I get this
error message from the lexical_cast.hpp file:

...\boost\lexical_cast.hpp(147): error C2678: binary '<<' : no
    operator found which takes a left-hand operand of type
    'std::basic_stringstream<_Elem,_Traits,_Alloc>' (or there is no
    acceptable conversion)
        with
        [
            _Elem=wchar_t,
            _Traits=std::char_traits<wchar_t>,
            _Alloc=std::allocator<wchar_t>
        ]

The offending line in lexical_cast.hpp contains this function:
            bool operator<<(const Source &input)
            {
                return stream << input;
            }

What am I doing wrong?

--
Claus Tondering