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From: John Maddock (john_at_[hidden])
Date: 2005-05-04 04:48:43

> I think I found a configuration issue while building boost 1.32.0 with
> VC .Net 2003 (VC71) using STLport 5.0 beta (latest from cvs STLPORT_5_0
> branch). Maybe someone already notive this problem but the latest boost
> CVS version still show it.
> With the STLport lib the macro configuration is :
> - BOOST_NO_STD_WSTRING _not_ defined, wstring are supported
> Thanks to the BOOST_NO_STD_WSTRING macro the date_time lib instanciate
> code for wstring specific type. For instance in
> libs/date_time/src/gregorian/greg_month.cpp you will find a block of code
> in a #ifndef BOOST_NO_STD_WSTRING block.
> The date_time lib use the lexical_cast tool. But the lexical_cast tool
> do not care about BOOST_NO_STD_WSTRING and rather check, among other
> macros, BOOST_NO_INTRINSIC_WCHAR_T and so do not grant the necessary
> specialization for wchar_t and wstring. The error message is then
> something like:
> D:\boost_1_32_0\boost/lexical_cast.hpp(137): error: no operator "<<"
> matches these operands operand types are: std::basic_stringstream<wchar_t,
> std::char_traits<wchar_t> , std::allocator<wchar_t> > << const
> std::basic_string<char, std::char_traits<char> , std::allocator<char>>
> return stream << input;
> Sorry for not having the accurate message but I have the compiler on an
> other computer.

Thanks, I can reproduce that with plain VC++ when building date_time without
the /Zc:wchar_t switch, I'll look into possible fixes for lexical_cast,


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