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- CMAKE_C_KNOWN_FEATURES
- ----------------------
- .. versionadded:: 3.1
- 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_C_COMPILE_FEATURES` variable.
- The features listed here may be used with the :command:`target_compile_features`
- command. See the :manual:`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 listed below.
- High level meta features indicating C standard support
- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- .. versionadded:: 3.8
- ``c_std_90``
- Compiler mode is at least C 90.
- ``c_std_99``
- Compiler mode is at least C 99.
- ``c_std_11``
- Compiler mode is at least C 11.
- ``c_std_17``
- .. versionadded:: 3.21
- Compiler mode is at least C 17.
- ``c_std_23``
- .. versionadded:: 3.21
- Compiler mode is at least C 23.
- Low level individual compile features
- ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
- ``c_function_prototypes``
- Function prototypes, as defined in ``ISO/IEC 9899:1990``.
- ``c_restrict``
- ``restrict`` keyword, as defined in ``ISO/IEC 9899:1999``.
- ``c_static_assert``
- Static assert, as defined in ``ISO/IEC 9899:2011``.
- ``c_variadic_macros``
- Variadic macros, as defined in ``ISO/IEC 9899:1999``.
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