rewrite extern-fn-with-extern-types to rmake

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -29,7 +29,6 @@ run-make/extern-fn-generic/Makefile
 run-make/extern-fn-mangle/Makefile
 run-make/extern-fn-reachable/Makefile
 run-make/extern-fn-struct-passing-abi/Makefile
-run-make/extern-fn-with-extern-types/Makefile
 run-make/extern-fn-with-packed-struct/Makefile
 run-make/extern-fn-with-union/Makefile
 run-make/extern-multiple-copies/Makefile

tests/run-make/extern-fn-with-extern-types/Makefile

@@ -1,6 +0,0 @@
-# ignore-cross-compile
-include ../tools.mk
-
-all: $(call NATIVE_STATICLIB,ctest)
-	$(RUSTC) test.rs
-	$(call RUN,test) || exit 1

tests/run-make/extern-fn-with-extern-types/rmake.rs

@@ -0,0 +1,16 @@
+// This test checks the functionality of foreign function interface (FFI) where Rust
+// must call upon a C library defining functions, where these functions also use custom
+// types defined by the C file. In addition to compilation being successful, the binary
+// should also successfully execute.
+// See https://github.com/rust-lang/rust/pull/44295
+
+//@ ignore-cross-compile
+// Reason: the compiled binary is executed
+
+use run_make_support::{build_native_static_lib, run, rustc};
+
+fn main() {
+    build_native_static_lib("ctest");
+    rustc().input("test.rs").run();
+    run("test");
+}