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Diffstat (limited to 'Help/prop_tgt/C_STANDARD.rst')
| -rw-r--r-- | Help/prop_tgt/C_STANDARD.rst | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/Help/prop_tgt/C_STANDARD.rst b/Help/prop_tgt/C_STANDARD.rst new file mode 100644 index 0000000..9fdc0bb --- /dev/null +++ b/Help/prop_tgt/C_STANDARD.rst @@ -0,0 +1,27 @@ +C_STANDARD +---------- + +The C standard whose features are requested to build this target. + +This property specifies the C standard whose features are requested +to build this target. For some compilers, this results in adding a +flag such as ``-std=c11`` to the compile line. + +Supported values are ``90``, ``99`` and ``11``. + +If the value requested does not result in a compile flag being added for +the compiler in use, a previous standard flag will be added instead. This +means that using: + +.. code-block:: cmake + + set_property(TARGET tgt PROPERTY C_STANDARD 11) + +with a compiler which does not support ``-std=c11`` or an equivalent +flag will not result in an error or warning, but will instead add the +``-std=c99`` or ``-std=c90`` flag if supported. This "decay" behavior may +be controlled with the :prop_tgt:`C_STANDARD_REQUIRED` target property. + +This property is initialized by the value of +the :variable:`CMAKE_C_STANDARD` variable if it is set when a target +is created. |