Rollup merge of #94831 - yaahc:lib-tracking-issue-template-update, r=JohnTitor

[rust.git] / src / bootstrap / util.rs

diff --git a/src/bootstrap/util.rs b/src/bootstrap/util.rs
index 848d9a7dc92ed1c19496badc68b7e37b1b64ce97..6f4266a7f294e0febd5c18301282dd5bb3ebb01b 100644 (file)
--- a/src/bootstrap/util.rs
+++ b/src/bootstrap/util.rs
@@ -22,6 +22,7 @@
 ///
 /// This is currently used judiciously throughout the build system rather than
 /// using a `Result` with `try!`, but this may change one day...
+#[macro_export]
 macro_rules! t {
     ($e:expr) => {
         match $e {
@@ -37,7 +38,7 @@ macro_rules! t {
         }
     };
 }
-pub(crate) use t;
+pub use t;
 
 /// Given an executable called `name`, return the filename for the
 /// executable for a particular target.
@@ -115,6 +116,14 @@ fn drop(&mut self) {
     }
 }
 
+/// Used for download caching
+pub(crate) fn program_out_of_date(stamp: &Path, key: &str) -> bool {
+    if !stamp.exists() {
+        return true;
+    }
+    t!(fs::read_to_string(stamp)) != key
+}
+
 /// Symlinks two directories, using junctions on Windows and normal symlinks on
 /// Unix.
 pub fn symlink_dir(config: &Config, src: &Path, dest: &Path) -> io::Result<()> {