CMAKE_<LANG>_EXTENSIONS

The variations are:

• CMAKE_C_EXTENSIONS
• CMAKE_CXX_EXTENSIONS
• CMAKE_CUDA_EXTENSIONS
• CMAKE_HIP_EXTENSIONS
• CMAKE_OBJC_EXTENSIONS
• CMAKE_OBJCXX_EXTENSIONS

Default values for <LANG>_EXTENSIONS target properties if set when a target is created. For the compiler's default setting see CMAKE_<LANG>_EXTENSIONS_DEFAULT.

For supported CMake versions see the respective pages.

See the cmake-compile-features(7) manual for information on compile features and a list of supported compilers.