emit an error if we can't find a path to the self-contained linker

2 files changed, 7 insertions, 3 deletions

diff --git a/compiler/rustc_codegen_ssa/src/back/link.rs b/compiler/rustc_codegen_ssa/src/back/link.rs
index 874732ee9ef..9d19ee77d3d 100644
--- a/compiler/rustc_codegen_ssa/src/back/link.rs
+++ b/compiler/rustc_codegen_ssa/src/back/link.rs
@@ -3127,9 +3127,9 @@ fn add_lld_args(
             });
         }
         if !linker_path_exists {
-            // As an additional sanity check, we do nothing if the sysroot doesn't contain the
-            // linker path at all.
-            return;
+            // As a sanity check, we emit an error if none of these paths exist: we want
+            // self-contained linking and have no linker.
+            sess.dcx().emit_fatal(errors::SelfContainedLinkerMissing);
         }
     }
 
diff --git a/compiler/rustc_codegen_ssa/src/errors.rs b/compiler/rustc_codegen_ssa/src/errors.rs
index ed6a0c24410..3641e7842cf 100644
--- a/compiler/rustc_codegen_ssa/src/errors.rs
+++ b/compiler/rustc_codegen_ssa/src/errors.rs
@@ -414,6 +414,10 @@ pub struct UnableToExeLinker {
 pub struct MsvcMissingLinker;
 
 #[derive(Diagnostic)]
+#[diag(codegen_ssa_self_contained_linker_missing)]
+pub struct SelfContainedLinkerMissing;
+
+#[derive(Diagnostic)]
 #[diag(codegen_ssa_check_installed_visual_studio)]
 pub struct CheckInstalledVisualStudio;