New in version 3.1.
Boolean specifying whether compiler specific extensions are requested.
This property specifies whether compiler specific extensions should be used. For some compilers, this results in adding a flag such as
-std=gnu++11 instead of
-std=c++11 to the compile line. This property is
ON by default. The basic C++ standard level is controlled by the
CXX_STANDARD target property.
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_CXX_EXTENSIONS variable if it is set when a target is created.
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