New in version 3.1.
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=gnu11 to the compile line. For compilers that have no notion of a C standard level, such as all versions of MSVC known as of this version of CMake, this has no effect.
Supported values are
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:
set_property(TARGET tgt PROPERTY C_STANDARD 11)
with a compiler which does not support
-std=gnu11 or an equivalent flag will not result in an error or warning, but will instead add the
-std=gnu90 flag if supported. This “decay” behavior may be controlled with the
C_STANDARD_REQUIRED target property. Additionally, the
C_EXTENSIONS target property may be used to control whether compiler-specific extensions are enabled on a per-target basis.
cmake-compile-features(7) manual for information on compile features and a list of supported compilers.
This property is initialized by the value of the
CMAKE_C_STANDARD variable if it is set when a target is created.
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