Integrate better with bindgen about cbindgen HOT 4 CLOSED

I think an optimal solution could be:

# config.rs
[rust-bindgen]
mod = "generated"
header = "source.h"

We would then flag every item in mod generated as being from rust-bindgen and not give them definitions. We could then add an include to the output header for the header rust-bindgen generated from.

This depends on refactoring rustlib.rs to expose what mod items are from, which I've been meaning to do for a while.

from cbindgen.

If cbindgen finds an undefined type, it will just ignore it, instead of failing?

from cbindgen.

It will generate a warning in the console, but it won't fail to generate a header. In the future it might.

If you want to use this to not generate a definition for a type, you'll need some way of hiding it from cbindgen but not from rustc. Or maybe generating the definitition after cbindgen runs.

from cbindgen.

I'm going to close this now as it's not clear what action is required here.

from cbindgen.