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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 `CMAKE_CXX_COMPILE_FEATURES` variable.

The features listed here may be used with the `target_compile_features()` command. See the `cmake-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_aggregate_default_initializers`
  Aggregate default initializers, as defined in N3605.
`cxx_alias_templates`
  Template aliases, as defined in N2258.
`cxx_alignas`
  Alignment control `alignas`, as defined in N2341.
`cxx_alignof`
  Alignment control `alignof`, as defined in N2341.
`cxx_attributes`
  Generic attributes, as defined in N2761.
`cxx_attribute_deprecated`
  `[[deprecated]]` attribute, as defined in N3760.
`cxx_auto_type`
  Automatic type deduction, as defined in N1984.
`cxx_binary_literals`
  Binary literals, as defined in N3472.
`cxx_constexpr`
  Constant expressions, as defined in N2235.
`cxx_contextual_conversions`
  Contextual conversions, as defined in N3323.
`cxx_decltype_incomplete_return_types`
  Decltype on incomplete return types, as defined in N3276.
`cxx_decltype`
  Decltype, as defined in N2343.
`cxx_decltype_auto`
  `decltype(auto)` semantics, as defined in N3638.
`cxx_default_function_template_args`
  Default template arguments for function templates, as defined in DR226
`cxx_defaulted_functions`
  Defaulted functions, as defined in N2346.
`cxx_defaulted_move_initializers`
  Defaulted move initializers, as defined in N3053.
`cxx_delegating_constructors`
  Delegating constructors, as defined in N1986.
`cxx_deleted_functions`
  Deleted functions, as defined in N2346.
`cxx_digit_separators`
  Digit separators, as defined in N3781.
`cxx_enum_forward_declarations`
  Enum forward declarations, as defined in N2764.
`cxx_explicit_conversions`
  Explicit conversion operators, as defined in N2437.
`cxx_extended_friend_declarations`
  Extended friend declarations, as defined in N1791.
`cxx_extern_templates`
  Extern templates, as defined in N1987.
`cxx_final`
  Override control `final` keyword, as defined in N2928, N3206 and N3272.
`cxx_func_identifier`
  Predefined `__func__` identifier, as defined in N2340.
`cxx_generalized_initializers`
  Initializer lists, as defined in N2672.
`cxx_generic_lambdas`
  Generic lambdas, as defined in N3649.
`cxx_inheriting_constructors`
  Inheriting constructors, as defined in N2540.
`cxx_inline_namespaces`
  Inline namespaces, as defined in N2535.
`cxx_lambdas`
  Lambda functions, as defined in N2927.
`cxx_lambda_init_captures`
  Initialized lambda captures, as defined in N3648.
`cxx_local_type_template_args`
  Local and unnamed types as template arguments, as defined in N2657.
`cxx_long_long_type`
  `long long` type, as defined in N1811.
`cxx_noexcept`
  Exception specifications, as defined in N3050.
`cxx_nonstatic_member_init`
  Non-static data member initialization, as defined in N2756.
`cxx_nullptr`
  Null pointer, as defined in N2431.
`cxx_override`
  Override control `override` keyword, as defined in N2928, N3206 and N3272.
`cxx_range_for`
  Range-based for, as defined in N2930.
`cxx_raw_string_literals`
  Raw string literals, as defined in N2442.
`cxx_reference_qualified_functions`
  Reference qualified functions, as defined in N2439.
`cxx_relaxed_constexpr`
  Relaxed constexpr, as defined in N3652.
`cxx_return_type_deduction`
  Return type deduction on normal functions, as defined in N3386.
`cxx_right_angle_brackets`
  Right angle bracket parsing, as defined in N1757.
`cxx_rvalue_references`
  R-value references, as defined in N2118.
`cxx_sizeof_member`
  Size of non-static data members, as defined in N2253.
`cxx_static_assert`
  Static assert, as defined in N1720.
`cxx_strong_enums`
  Strongly typed enums, as defined in N2347.
`cxx_thread_local`
  Thread-local variables, as defined in N2659.
`cxx_trailing_return_types`
  Automatic function return type, as defined in N2541.
`cxx_unicode_literals`
  Unicode string literals, as defined in N2442.
`cxx_uniform_initialization`
  Uniform intialization, as defined in N2640.
`cxx_unrestricted_unions`
  Unrestricted unions, as defined in N2544.
`cxx_user_literals`
  User-defined literals, as defined in N2765.
`cxx_variable_templates`
  Variable templates, as defined in N3651.
`cxx_variadic_macros`
  Variadic macros, as defined in N1653.
`cxx_variadic_templates`
  Variadic templates, as defined in N2242.
`cxx_template_template_parameters`
  Template template parameters, as defined in `ISO/IEC 14882:1998`.

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