tmp: enable rust-lld by default

Author: lqd

compiler/rustc_target/src/spec/mod.rs

@@ -621,6 +621,12 @@ impl LinkSelfContained {
             _ => "crt-objects-fallback",
         }
     }
+
+    /// Creates a `LinkSelfContained` enabling the self-contained linker for target specs (the
+    /// equivalent of `-Clink-self-contained=+linker` on the CLI).
+    pub fn with_linker() -> LinkSelfContained {
+        LinkSelfContained::WithComponents(LinkSelfContainedComponents::LINKER)
+    }
 }
 
 impl From<LinkSelfContainedDefault> for LinkSelfContained {

compiler/rustc_target/src/spec/x86_64_unknown_linux_gnu.rs

@@ -16,6 +16,12 @@ pub fn target() -> Target {
         | SanitizerSet::THREAD;
     base.supports_xray = true;
 
+    #[cfg(rust_lld)]
+    {
+        base.linker_flavor = LinkerFlavor::Gnu(Cc::Yes, Lld::Yes);
+        base.link_self_contained = crate::spec::LinkSelfContained::with_linker();
+    }
+
     Target {
         llvm_target: "x86_64-unknown-linux-gnu".into(),
         pointer_width: 64,