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37 lines
1.7 KiB
Plaintext
37 lines
1.7 KiB
Plaintext
//
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// Copyright (c) 2009-2011 Artyom Beilis (Tonkikh)
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//
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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/*!
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\page status_of_cpp0x_characters_support Status of C++11 char16_t/char32_t support
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The support of C++11 \c char16_t and \c char32_t is experimental and is not
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intended to be used in production until various compiler/standard library flaws are fixed.
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Many recent C++ compilers provide decent support of C++11 characters, however often:
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-# The standard library does not install any std::locale::facets for this support so any attempt
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to format numbers using \c char16_t or \c char32_t streams would just fail.
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-# The standard library misses specialization for required \c char16_t/char32_t locale facets,
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so "std" backends is not build-able as essential symbols missing, also \c codecvt facet
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can't be created as well.
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\section status_of_cpp0x_characters_support_msvc Visual Studio
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MSVC provides all required facets since VS 2010 however:
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-# The standard library does not provide installations of std::locale::id for these facets
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in DLL so it is not usable with \c /MD, \c /MDd compiler flags and requires static link of the runtime
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library.
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-# \c char16_t and \c char32_t are not distinct types but rather aliases of unsigned short and unsigned
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types which contradicts to C++11 requirements making it impossible to write \c char16_t/char32_t to stream
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and causing multiple faults.
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If you want to build or test Boost.Locale with C++11 char16_t and char32_t support
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you should pass `define=BOOST_LOCALE_ENABLE_CHAR32_T define=BOOST_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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*/
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