cxx [1] is a relatively recent effort to enable safe interop with C++. Mozilla has also published information on how they are rewriting components in Rust and

cxx [1] is a relatively recent effort to enable safe interop with C++. Mozilla has also published information on how they are rewriting components in Rust and integrating them into the Firefox codebase, though they were using C apis - exposing Rust to C and vice versa is relatively straight-forward. [1] https://github.com/dtolnay/cxx https://github.com/dtolnay/cxx