[boost] [config] libs not supporting std::u16string and std::u32string.

Subject: [boost] [config] libs not supporting std::u16string and std::u32string.
From: Vicente J. Botet Escriba (vicente.botet_at_[hidden])
Date: 2012-10-07 09:12:11

Hi,

compiling Boost.Ratio/io Boost.Chrono/io with compilers supporting 
|char16_t and |char32_t fails if the library don't provides 
std::u16string and std::u32string.

Could we add a macro |BOOST_NO_CXX11_HDR_STRING||| (c++11 is not 
completely provided) or the two more specific 
|||BOOST_NO_CXX11_U16STRING||| and |||BOOST_NO_CXX11_U32STRING||| for 
these cases?

Best,
Vicente
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