From 63f6289db2d90be05acdf615f8039383c52c4ddc Mon Sep 17 00:00:00 2001
From: Joshua Nelson <jnelson@cloudflare.com>
Date: Wed, 14 Sep 2022 18:18:57 -0500
Subject: [PATCH] Fix `--dry-run` for `dist::RustDev`

---
 src/bootstrap/dist.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index 679f017c7706..3d03a056c154 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -1873,7 +1873,7 @@ fn maybe_install_llvm(builder: &Builder<'_>, target: TargetSelection, dst_libdir
         let mut cmd = Command::new(llvm_config);
         cmd.arg("--libfiles");
         builder.verbose(&format!("running {:?}", cmd));
-        let files = output(&mut cmd);
+        let files = if builder.config.dry_run { "".into() } else { output(&mut cmd) };
         let build_llvm_out = &builder.llvm_out(builder.config.build);
         let target_llvm_out = &builder.llvm_out(target);
         for file in files.trim_end().split(' ') {