Function autocxx_engine::generate_rs_archive

pub fn generate_rs_archive<'a>(
    rs_outputs: impl Iterator<Item = RsOutput<'a>>
) -> String

Creates an on-disk archive (actually a JSON file) of the Rust side of the bindings for multiple include_cpp macros. If you use this, you will want to tell autocxx_macro how to find this file using the AUTOCXX_RS_JSON_ARCHIVE environment variable.