1 files changed, 3 insertions, 1 deletions
diff --git a/src/bootstrap/builder.rs b/src/bootstrap/builder.rs
index 2748903f2d4..70b53cfc4e7 100644
--- a/src/bootstrap/builder.rs
+++ b/src/bootstrap/builder.rs
@@ -1231,7 +1231,9 @@ impl<'a> Builder<'a> {
             cargo.arg("--frozen");
         }
 
-        cargo.env("RUSTC_INSTALL_BINDIR", &self.config.bindir);
+        // Try to use a sysroot-relative bindir, in case it was configured absolutely.
+        let bindir = self.config.bindir_relative().unwrap_or(&self.config.bindir);
+        cargo.env("RUSTC_INSTALL_BINDIR", bindir);
 
         self.ci_env.force_coloring_in_ci(&mut cargo);