2 files changed, 15 insertions, 0 deletions
diff --git a/library/proc_macro/src/bridge/mod.rs b/library/proc_macro/src/bridge/mod.rs
index a2953b68564..b968d44fe48 100644
--- a/library/proc_macro/src/bridge/mod.rs
+++ b/library/proc_macro/src/bridge/mod.rs
@@ -55,6 +55,7 @@ macro_rules! with_api {
             FreeFunctions {
                 fn drop($self: $S::FreeFunctions);
                 fn track_env_var(var: &str, value: Option<&str>);
+                fn track_path(path: &str);
             },
             TokenStream {
                 fn drop($self: $S::TokenStream);
diff --git a/library/proc_macro/src/lib.rs b/library/proc_macro/src/lib.rs
index 9b155db6d7b..53fd58a29d8 100644
--- a/library/proc_macro/src/lib.rs
+++ b/library/proc_macro/src/lib.rs
@@ -1234,3 +1234,17 @@ pub mod tracked_env {
         value
     }
 }
+
+/// Tracked access to additional files.
+#[unstable(feature = "track_path", issue = "73921")]
+pub mod tracked_path {
+
+    /// Track a file explicitly.
+    ///
+    /// Commonly used for tracking asset preprocessing.
+    #[unstable(feature = "track_path", issue = "73921")]
+    pub fn path<P: AsRef<str>>(path: P) {
+        let path: &str = path.as_ref();
+        crate::bridge::client::FreeFunctions::track_path(path);
+    }
+}