[borodi]

Theoretically yes, rust binaries can have C-apis and other code can call them just fine.

[kibwen]

With the caveat that, naturally, these APIs can only expose concepts that C can understand, so you're a bit limited. No generics, for example.

[hedora]

Also, no memory safety...

[3a2d29]

Well its the C coding calling the Rust that has no memory safety, the rust code exposed as the C binary will (assuming no unsafe block) be memory safe, despite appearing to C like other C code.