Even with static linking, Rust produces separate compilation units a least at the crate level (and depending on compiler settings, within crates). You won't get

Even with static linking, Rust produces separate compilation units a least at the crate level (and depending on compiler settings, within crates). You won't get LTO between crates if you don't explicitly request it. It does allow inlining across compilation units without LTO, but only for functions explicitly marked as `#[inline]`.