OBJCXX_EXTENSIONSΒΆ
Added in version 3.16.
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 ObjC++ standard level is
controlled by the OBJCXX_STANDARD target property.
See the cmake-compile-features(7) manual for information on
compile features and a list of supported compilers.
If the property is not set, and the project has set the CXX_EXTENSIONS,
the value of CXX_EXTENSIONS is set for OBJCXX_EXTENSIONS.
This property is initialized by the value of
the CMAKE_OBJCXX_EXTENSIONS variable if set when a target is
created and otherwise by the value of
CMAKE_OBJCXX_EXTENSIONS_DEFAULT
(see CMP0128).