ocamlPackages.wasm: fix static cross

pkgs/development/ocaml-modules/wasm/default.nix

···
     sha256 = "1kp72yv4k176i94np0m09g10cviqp2pnpm7jmiq6ik7fmmbknk7c";
   };
 
-  buildInputs = [ ocaml findlib ocamlbuild ];
+  nativeBuildInputs = [ ocaml findlib ocamlbuild ];
+  strictDeps = true;
+
+  # x86_64-unknown-linux-musl-ld: -r and -pie may not be used together
+  hardeningDisable = lib.optional stdenv.hostPlatform.isStatic "pie";
 
   makeFlags = [ "-C" "interpreter" ];