C_EXTENSIONSΒΆ
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=gnu11 instead of -std=c11 to the compile line. This
property is ON by default.
See the cmake-compile-features(7) manual for information on
compile features.
This property is initialized by the value of
the CMAKE_C_EXTENSIONS variable if it is set when a target
is created.