CXX_EXTENSIONS | |
-------------- | |
.. versionadded:: 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 :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 set when a target is created | |
and otherwise by the value of | |
:variable:`CMAKE_CXX_EXTENSIONS_DEFAULT <CMAKE_<LANG>_EXTENSIONS_DEFAULT>` (see | |
:policy:`CMP0128`). |