This project's primary focus is to create a cycle-accurate emulator of the Atari 2600, and to include tools to create verifiable TASes (e.g. frame-advance, rewind, input dumping, etc.)
If you wish to build from source, for your own system, Rust is integrated with the cargo build system. To install Rust and cargo, just follow these instructions. Once installed, while in the project directory, run cargo build --release to build, or use cargo run --release to run directly. The built binary will be available at ./target/release/rutari2600
To cross-compile builds for other operating systems, you can use rust-embedded/cross.