[kibwen]

The C ABI is de facto standardized, the compiler in use doesn't matter. Rust code can expose a C ABI and be compiled into a linkable artifact, and that means that C code can use it as though it were an artifact compiled by any C compiler.

[acconsta]

It's not quite plug-and-play, but it does seem like there's been some progress.

https://lwn.net/Articles/644681/