Force all native libraries to be statically linked when linking a static binary

compiler/rustc_target/src/spec/mod.rs

@@ -596,6 +596,17 @@ impl LinkOutputKind {
             _ => return None,
         })
     }
+
+    pub fn can_link_dylib(self) -> bool {
+        match self {
+            LinkOutputKind::StaticNoPicExe | LinkOutputKind::StaticPicExe => false,
+            LinkOutputKind::DynamicNoPicExe
+            | LinkOutputKind::DynamicPicExe
+            | LinkOutputKind::DynamicDylib
+            | LinkOutputKind::StaticDylib
+            | LinkOutputKind::WasiReactorExe => true,
+        }
+    }
 }
 
 impl fmt::Display for LinkOutputKind {