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CMAKE_CXX_KNOWN_FEATURES ------------------------ List of C++ features known to this version of CMake. The features listed in this global property may be known to be available to the C++ compiler. If the feature is available with the C++ compiler, it will be listed in the :variable:`CMAKE_CXX_COMPILE_FEATURES` variable. The features listed here may be used with the :command:`target_compile_features` command. See the :manual:`cmake3-compile-features(7)` manual for information on compile features and a list of supported compilers. The features known to this version of CMake are: ``cxx_std_98`` Compiler mode is at least C++ 98. ``cxx_std_11`` Compiler mode is at least C++ 11. ``cxx_std_14`` Compiler mode is at least C++ 14. ``cxx_std_17`` Compiler mode is at least C++ 17. ``cxx_std_20`` Compiler mode is at least C++ 20. ``cxx_aggregate_default_initializers`` Aggregate default initializers, as defined in N3605_. .. _N3605: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3605.html ``cxx_alias_templates`` Template aliases, as defined in N2258_. .. _N2258: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2258.pdf ``cxx_alignas`` Alignment control ``alignas``, as defined in N2341_. .. _N2341: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2341.pdf ``cxx_alignof`` Alignment control ``alignof``, as defined in N2341_. .. _N2341: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2341.pdf ``cxx_attributes`` Generic attributes, as defined in N2761_. .. _N2761: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2761.pdf ``cxx_attribute_deprecated`` ``[[deprecated]]`` attribute, as defined in N3760_. .. _N3760: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3760.html ``cxx_auto_type`` Automatic type deduction, as defined in N1984_. .. _N1984: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1984.pdf ``cxx_binary_literals`` Binary literals, as defined in N3472_. .. _N3472: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3472.pdf ``cxx_constexpr`` Constant expressions, as defined in N2235_. .. _N2235: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2235.pdf ``cxx_contextual_conversions`` Contextual conversions, as defined in N3323_. .. _N3323: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3323.pdf ``cxx_decltype_incomplete_return_types`` Decltype on incomplete return types, as defined in N3276_. .. _N3276 : http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3276.pdf ``cxx_decltype`` Decltype, as defined in N2343_. .. _N2343: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2343.pdf ``cxx_decltype_auto`` ``decltype(auto)`` semantics, as defined in N3638_. .. _N3638: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3638.html ``cxx_default_function_template_args`` Default template arguments for function templates, as defined in DR226_ .. _DR226: http://www.open-std.org/jtc1/sc22/wg21/docs/cwg_defects.html#226 ``cxx_defaulted_functions`` Defaulted functions, as defined in N2346_. .. _N2346: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2346.htm ``cxx_defaulted_move_initializers`` Defaulted move initializers, as defined in N3053_. .. _N3053: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3053.html ``cxx_delegating_constructors`` Delegating constructors, as defined in N1986_. .. _N1986: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1986.pdf ``cxx_deleted_functions`` Deleted functions, as defined in N2346_. .. _N2346: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2346.htm ``cxx_digit_separators`` Digit separators, as defined in N3781_. .. _N3781: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3781.pdf ``cxx_enum_forward_declarations`` Enum forward declarations, as defined in N2764_. .. _N2764: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2764.pdf ``cxx_explicit_conversions`` Explicit conversion operators, as defined in N2437_. .. _N2437: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2437.pdf ``cxx_extended_friend_declarations`` Extended friend declarations, as defined in N1791_. .. _N1791: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1791.pdf ``cxx_extern_templates`` Extern templates, as defined in N1987_. .. _N1987: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n1987.htm ``cxx_final`` Override control ``final`` keyword, as defined in N2928_, N3206_ and N3272_. .. _N2928: http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2928.htm .. _N3206: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3206.htm .. _N3272: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3272.htm ``cxx_func_identifier`` Predefined ``__func__`` identifier, as defined in N2340_. .. _N2340: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2340.htm ``cxx_generalized_initializers`` Initializer lists, as defined in N2672_. .. _N2672: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2672.htm ``cxx_generic_lambdas`` Generic lambdas, as defined in N3649_. .. _N3649: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3649.html ``cxx_inheriting_constructors`` Inheriting constructors, as defined in N2540_. .. _N2540: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2540.htm ``cxx_inline_namespaces`` Inline namespaces, as defined in N2535_. .. _N2535: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2535.htm ``cxx_lambdas`` Lambda functions, as defined in N2927_. .. _N2927: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2927.pdf ``cxx_lambda_init_captures`` Initialized lambda captures, as defined in N3648_. .. _N3648: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3648.html ``cxx_local_type_template_args`` Local and unnamed types as template arguments, as defined in N2657_. .. _N2657: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2657.htm ``cxx_long_long_type`` ``long long`` type, as defined in N1811_. .. _N1811: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1811.pdf ``cxx_noexcept`` Exception specifications, as defined in N3050_. .. _N3050: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3050.html ``cxx_nonstatic_member_init`` Non-static data member initialization, as defined in N2756_. .. _N2756: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2756.htm ``cxx_nullptr`` Null pointer, as defined in N2431_. .. _N2431: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2431.pdf ``cxx_override`` Override control ``override`` keyword, as defined in N2928_, N3206_ and N3272_. .. _N2928: http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2928.htm .. _N3206: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2010/n3206.htm .. _N3272: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2011/n3272.htm ``cxx_range_for`` Range-based for, as defined in N2930_. .. _N2930: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2930.html ``cxx_raw_string_literals`` Raw string literals, as defined in N2442_. .. _N2442: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2442.htm ``cxx_reference_qualified_functions`` Reference qualified functions, as defined in N2439_. .. _N2439: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2439.htm ``cxx_relaxed_constexpr`` Relaxed constexpr, as defined in N3652_. .. _N3652: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3652.html ``cxx_return_type_deduction`` Return type deduction on normal functions, as defined in N3386_. .. _N3386: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2012/n3386.html ``cxx_right_angle_brackets`` Right angle bracket parsing, as defined in N1757_. .. _N1757: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2005/n1757.html ``cxx_rvalue_references`` R-value references, as defined in N2118_. .. _N2118: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2118.html ``cxx_sizeof_member`` Size of non-static data members, as defined in N2253_. .. _N2253: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2253.html ``cxx_static_assert`` Static assert, as defined in N1720_. .. _N1720: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1720.html ``cxx_strong_enums`` Strongly typed enums, as defined in N2347_. .. _N2347: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2347.pdf ``cxx_thread_local`` Thread-local variables, as defined in N2659_. .. _N2659: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2659.htm ``cxx_trailing_return_types`` Automatic function return type, as defined in N2541_. .. _N2541: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2541.htm ``cxx_unicode_literals`` Unicode string literals, as defined in N2442_. .. _N2442: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2442.htm ``cxx_uniform_initialization`` Uniform initialization, as defined in N2640_. .. _N2640: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2640.pdf ``cxx_unrestricted_unions`` Unrestricted unions, as defined in N2544_. .. _N2544: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2544.pdf ``cxx_user_literals`` User-defined literals, as defined in N2765_. .. _N2765: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2765.pdf ``cxx_variable_templates`` Variable templates, as defined in N3651_. .. _N3651: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2013/n3651.pdf ``cxx_variadic_macros`` Variadic macros, as defined in N1653_. .. _N1653: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2004/n1653.htm ``cxx_variadic_templates`` Variadic templates, as defined in N2242_. .. _N2242: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2242.pdf ``cxx_template_template_parameters`` Template template parameters, as defined in ``ISO/IEC 14882:1998``.
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