Rust bindings for Binaryen's wasm-opt

wasm-opt is a component of the Binaryen toolkit that optimizes WebAssembly modules. It is written in C++.

lib.rs:

Direct bindings to wasm-opt.

These are bindings to wasm-opt, as built by the wasm-opt-sys crate. The bindings are created by the cxx crate, and all go through a custom C++ shim layer that provides a cxx-compatible C++ API.

Most users will not want to use this crate directly, but instead the wasm-opt crate.

The version of cxx used by these bindings is reexported here.