message: Add first cut of functionality for support for #[link(kind = "raw-dylib")].
  This does not yet support #[link_name] attributes on functions, the #[link_ordinal]
  attribute, #[link(kind = "raw-dylib")] on extern blocks in bin crates, or
  stdcall functions on 32-bit x86.
diff: @@ -254,6 +254,15 @@ enum BuilderKind {
  }
  }
  }
  +
  + fn inject_dll_import_lib(
  + &mut self,
  + _lib_name: &str,
  + _dll_imports: &[rustc_middle::middle::cstore::DllImport],
  + _tmpdir: &rustc_data_structures::temp_dir::MaybeTempDir,
  + ) {
  + bug!("injecting dll imports is not supported");
  + }
  }
  impl<'a> ArArchiveBuilder<'a> {
  