| 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``. |