Rustc Dependency Structure

• rustc (the binary) calls rustc_driver::main.
  • rustc_driver depends on a lot of other crates, but the main one is rustc_interface.
    • rustc_interface depends on most of the other compiler crates. It is a fairly generic interface for driving the whole compilation.
      • Most of the other rustc_* crates depend on rustc_middle, which defines a lot of central data structures in the compiler.
        • rustc_middle and most of the other crates depend on a handful of crates representing the early parts of the compiler (e.g. the parser), fundamental data structures (e.g. Span), or error reporting: rustc_data_structures, rustc_span, rustc_errors, etc.

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parent: rustc architecture tags: compiler rustc