Auto merge of #76708 - Mark-Simulacrum:lld-macos, r=alexcrichton

Always try to promote shared LLVM to the sysroot

Even when LLVM is not generally participating in a shared link with rustc, we
will likely still link to the shared dylib from rust-lld, so we still need to
promote it.

This reverts part of #76349; my expectation that the link-shared rule was sufficient was likely wrong.

Hopefully fixes #76698.

r? `@alexcrichton`

1 files changed, 4 insertions, 0 deletions

diff --git a/src/bootstrap/native.rs b/src/bootstrap/native.rs
index 6cd850bc0bf..3829d47da33 100644
--- a/src/bootstrap/native.rs
+++ b/src/bootstrap/native.rs
@@ -129,6 +129,10 @@ impl Step for Llvm {
                 Err(m) => m,
             };
 
+        if builder.config.llvm_link_shared && target.contains("windows") {
+            panic!("shared linking to LLVM is not currently supported on Windows");
+        }
+
         builder.info(&format!("Building LLVM for {}", target));
         t!(stamp.remove());
         let _time = util::timeit(&builder);