enum to string in modern C++ (C++14) and future C++17

Yet another recurrent duplicated question:

• 2008 c Easy way to use variables of enum types as string in C?


• 2008 c++ How to easily map c++ enums to strings


• 2008 c++ Making something both a C identifier and a string?


• 2008 c++ Is there a simple script to convert C++ enum to string?


• 2009 c++ How to use enums as flags in C++?


• 2011 c++ How to convert an enum type variable to a string?


• 2011 c++ Enum to String C++


• 2011 c++ How to convert an enum type variable to a string?


• 2012 c How to convert enum names to string in c


• 2013 c Stringifying an conditionally compiled enum in C

But after reading many answers, I did not yet find any:

• Elegant way using C++11/C++14 new features


• Or something ready to use in Boost


• Else something planned for C++17

Please do not provide C macro-based answers if possible (I am aware of beautiful #define P99_DECLARE_ENUM for C99/C11 available cloning git clone http://ift.tt/1F4crOl or from github).