Does Unreal Engine 4 toolset support C++11 or C++14 on OS X / Clang?

Question

I have some interest on UE4. Currently, I am developing a mobile game, and have a pretty large existing codebase written in C++11/14 with Clang.

AFAIK, UE4 is using a custom compiler (preprocessor? whatever), and that means C++ compatibility may differ on their own tools. How is the support for C++11/14 on UE4?

Answer 1

The C++14 seems to be officially supported as of now:

«We are using many C++14 language features that seem to be well-supported across modern compilers...»