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Rust produces standard linkable system libraries. You can produce dynamic libraries or static libraries on all supported platforms.

For actual examples of using Rust with other languages through these libraries this site is great: http://jakegoulding.com/rust-ffi-omnibus/

More information about platform support can be found here: https://doc.rust-lang.org/book/getting-started.html

Not the OP, but I did a talk on an incremental rewrite of a C library to Rust [1]. Rust has good FFI capabilities with C and other languages through that [2].

[1]- https://github.com/carols10cents/rust-out-your-c-talk

[2] - http://jakegoulding.com/rust-ffi-omnibus/

linking a static lib with rust and linking with the final executable. other users posted the links I used :)