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=gnu++11 to the compile line. For compilers that
have no notion of a standard level, such as Microsoft Visual C++ before
2015 Update 3, this has no effect.
Supported values are:
New in version 3.8.
New in version 3.12.
New in version 3.20.
New in version 3.25.
C++26. CMake 3.25 and later recognize
26as a valid value, no version has support for any compiler.
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 CXX_STANDARD 11)
with a compiler which does not support
-std=gnu++11 or an equivalent
flag will not result in an error or warning, but will instead add the
-std=gnu++98 flag if supported. This "decay" behavior may be controlled
CXX_STANDARD_REQUIRED target property.
CXX_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
CMAKE_CXX_STANDARD variable if it is set when a target