[section Compiler Support] _yap_ is written against the C++14 and C++17 standards. It will use C++17 features if they are present, and otherwise is C++14 code. _yap_ also uses Boost.Hana extensively, so only compilers that support Hana will be usable in building _yap_. Clang versions 3.8 and later (which corresponds to XCode versions 7.3 or later), and GCC versions 6 and later should work. MSVC++ version 14.15 (Visual Studio 2017 version 15.8) is partially supported. The tests all pass, but some compilation errors can be found in some of the examples. [endsect]