Unnamed repository; edit this file 'description' to name the repository.
Diffstat (limited to 'crates/proc-macro-api/src/lib.rs')
-rw-r--r--crates/proc-macro-api/src/lib.rs4
1 files changed, 4 insertions, 0 deletions
diff --git a/crates/proc-macro-api/src/lib.rs b/crates/proc-macro-api/src/lib.rs
index f0c7ce7efd..85b250eddf 100644
--- a/crates/proc-macro-api/src/lib.rs
+++ b/crates/proc-macro-api/src/lib.rs
@@ -11,6 +11,10 @@
feature(proc_macro_internals, proc_macro_diagnostic, proc_macro_span)
)]
#![allow(internal_features)]
+#![cfg_attr(feature = "in-rust-tree", feature(rustc_private))]
+
+#[cfg(feature = "in-rust-tree")]
+extern crate rustc_driver as _;
mod codec;
mod framing;