rustc is the compiler for the Rust programming language. Compilers take your source code and produce binary code, either as a library or executable.
Most Rust programmers don’t invoke rustc directly, but instead do it through Cargo. It’s all in service of rustc.
The Rust compiler is special in two ways: it does things to your code that other compilers don’t do (such as borrow checking) and it has a lot of unconventional implementation choices (e.g. queries).
The Rust compiler uses a query system which is unlike most textbook compilers, which are organized as a series of passes over the code that execute sequentially. The compiler does this to make incremental compilation possible. If the user makes a change to their program and recompiles, the compiler performs as little redundant work as possible to produce the new binary.
rustc is free and open source software.
Website: doc.rust-lang.org
Support: GitHub Code Repository
Developer: Rust Foundation
License: Apache License 2.0 or MIT License
rustc itself is written in Rust. Learn Rust with our recommended free books and free tutorials.
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