CMAKE_CXX_KNOWN_FEATURES
------------------------

List of C++ features known to this version of CMake.

The features listed in this variable 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.

The features known to this version of CMake are:

``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_constexpr``
  Constant expressions, as defined in N2235_.

  .. _N2235: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2235.pdf

``cxx_decltype``
  Decltype, as defined in N2343_.

  .. _N2343: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2343.pdf

``cxx_defaulted_functions``
  Defaulted functions, as defined in N2346_.

  .. _N2346: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2346.htm

``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_explicit_conversions``
  Explicit conversion operators, as defined in N2437_.

  .. _N2437: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2437.pdf

``cxx_final``
  Override control ``final`` keyword, as defined in N2928_.

  .. _N2928: http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2928.htm

``cxx_inheriting_constructors``
  Inheriting constructors, as defined in N2540_.

  .. _N2540: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2008/n2540.htm

``cxx_lambdas``
  Lambda functions, as defined in N2927_.

  .. _N2927: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2009/n2927.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_.

  .. _N2928: http://www.open-std.org/JTC1/SC22/WG21/docs/papers/2009/n2928.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_rvalue_references``
  R-value references, as defined in N2118_.

  .. _N2118: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2006/n2118.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_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_variadic_templates``
  Variadic templates, as defined in N2242_.

  .. _N2242: http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2007/n2242.pdf