rust-c-js

Here is a little toy project showing how to compile Rust code that can be called from C or JavaScript (via WebAssembly). To set this project up, I used

• Day 23 - calling Rust from other languages
• rustwasm/wasm-bindgen

Installation

Requirements

• Cargo
• cbindgen
• gcc
• make
• Node.js (8 or newer)
• Rust Nightly
• wasm-bindgen
• wasm-gc
• wasm-opt

Usage

Run make all to build and run both the C and JavaScript test applications. You should see each print

Hello, World! Bye!

Release Mode

You can build in release mode with make release. This passes --release to Cargo, transforms the generated WebAssembly with wasm-gc and wasm-opt, and minifies the generated JavaScript.