rust/compiler/rustc_codegen_cranelift/src/archive.rs

use rustc_codegen_ssa::back::archive::{
    ArArchiveBuilder, ArchiveBuilder, ArchiveBuilderBuilder, DEFAULT_OBJECT_READER,
};
use rustc_session::Session;

pub(crate) struct ArArchiveBuilderBuilder;

impl ArchiveBuilderBuilder for ArArchiveBuilderBuilder {
    fn new_archive_builder<'a>(&self, sess: &'a Session) -> Box<dyn ArchiveBuilder + 'a> {
        Box::new(ArArchiveBuilder::new(sess, &DEFAULT_OBJECT_READER))
    }
}