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- //
- // Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
- //
- // 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)
- //
- // vim: tabstop=4 expandtab shiftwidth=4 softtabstop=4 filetype=cpp.doxygen
- /*!
- \page status_of_cpp0x_characters_support Status of C++11 char16_t/char32_t support
- The support of C++11 \c char16_t and \c char32_t is experimental, mostly does not work and not
- intended to be used in production with current latest compilers: GCC-4.5, MSVC10 till major
- compiler's flaws would be fixed.
- \section status_of_cpp0x_characters_support_gnu GNU GCC 4.5/C++11 Status
- GNU C++ compiler provides decent support of C++11 characters however:
- -# Standard library does not install any std::locale::facets for this support so any attempt
- to format numbers using \c char16_t or \c char32_t streams would just fail.
- -# Standard library misses specialization for required \c char16_t/char32_t locale facets,
- so "std" backends is not build-able as essential symbols missing, also \c codecvt facet
- can't be created as well.
- \section status_of_cpp0x_characters_support_msvc Visual Studio 2010 (MSVC10)/C++11 Status
- MSVC provides all required facets however:
- -# Standard library does not provide installations of std::locale::id for these facets
- in DLL so it is not usable with \c /MD, \c /MDd compiler flags and requires static link of the runtime
- library.
- -# \c char16_t and \c char32_t are not distinct types but rather aliases of unsigned short and unsigned
- types which contradicts to C++11 requirements making it impossible to write \c char16_t/char32_t to stream
- and causing multiple faults.
- If you want to build or test Boost.Locale with C++11 char16_t and char32_t support you should pass `cxxflags="-DBOOST_LOCALE_ENABLE_CHAR32_T -DBOOST_LOCALE_ENABLE_CHAR16_T"` to `b2` during build and define `BOOST_LOCALE_ENABLE_CHAR32_T` and `BOOST_LOCALE_ENABLE_CHAR32_T` when using Boost.Locale
- */
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