third_party_rust_cxx/gen/README.md

This directory contains CXX's C++ code generator. This code generator has two public frontends, one a command-line application (binary) in the cmd directory and the other a library intended to be used from a build.rs in the build directory.

There's also a 'lib' frontend which is intended to allow higher level code generators to embed cxx. This is not yet recommended for general use.