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- CXX_EXTENSIONS
- --------------
- 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 :prop_tgt:`CXX_STANDARD` target property.
- See the :manual:`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 :variable:`CMAKE_CXX_EXTENSIONS` variable if it is set when a target
- is created.
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