Rollup merge of rust-lang#67023 - jethrogb:jb/bootstrap-target-linker, r=alexcrichton

SGX: Fix target linker used by bootstrap

Bootstrap, for some reason, overrides the target linker. This is not correct for x86_64-fortanix-unknown-sgx. Add such targets to the list of exceptions.

r? @alexcrichton

Author: JohnTitor

src/bootstrap/lib.rs

@@ -810,6 +810,7 @@ impl Build {
                   !target.contains("emscripten") &&
                   !target.contains("wasm32") &&
                   !target.contains("nvptx") &&
+                  !target.contains("fortanix") &&
                   !target.contains("fuchsia") {
             Some(self.cc(target))
         } else {