A Simple Rust Library

Exporting Rust functions and types to C is easy. Here’s a simple Rust library:

interoperability/rust/libanalyze/analyze.rs

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interoperability/rust/libanalyze/Android.bp

rust_ffi {
    name: "libanalyze_ffi",
    crate_name: "analyze_ffi",
    srcs: ["analyze.rs"],
    include_dirs: ["."],
}

Speaker Notes

#[unsafe(no_mangle)] disables Rust’s usual name mangling, so the exported symbol will just be the name of the function. You can also use #[unsafe(export_name = "some_name")] to specify whatever name you want.