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.rs5
1 files changed, 5 insertions, 0 deletions
diff --git a/crates/proc-macro-api/src/lib.rs b/crates/proc-macro-api/src/lib.rs
index f0c7ce7efd..8e1faca00a 100644
--- a/crates/proc-macro-api/src/lib.rs
+++ b/crates/proc-macro-api/src/lib.rs
@@ -12,6 +12,11 @@
)]
#![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;
pub mod legacy_protocol;