Migrate `run-make/prefer-rlib` to `rmake.rs`

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -175,7 +175,6 @@ run-make/pgo-gen/Makefile
 run-make/pgo-indirect-call-promotion/Makefile
 run-make/pgo-use/Makefile
 run-make/pointer-auth-link-with-c/Makefile
-run-make/prefer-rlib/Makefile
 run-make/pretty-print-to-file/Makefile
 run-make/pretty-print-with-dep-file/Makefile
 run-make/print-calling-conventions/Makefile

tests/run-make/prefer-rlib/Makefile

@@ -1,9 +0,0 @@
-# ignore-cross-compile
-include ../tools.mk
-
-all:
-	$(RUSTC) bar.rs --crate-type=dylib --crate-type=rlib
-	ls $(TMPDIR)/$(call RLIB_GLOB,bar)
-	$(RUSTC) foo.rs
-	rm $(TMPDIR)/*bar*
-	$(call RUN,foo)

tests/run-make/prefer-rlib/rmake.rs

@@ -0,0 +1,16 @@
+// Check that `foo.rs` prefers to link to `bar` statically, and can be executed even if the `bar`
+// library artifacts are removed.
+
+//@ ignore-cross-compile
+
+use run_make_support::{dynamic_lib_name, path, run, rust_lib_name, rustc};
+use std::fs::remove_file;
+
+fn main() {
+    rustc().input("bar.rs").crate_type("dylib").crate_type("rlib").run();
+    assert!(path(rust_lib_name("bar")).exists());
+    rustc().input("foo.rs").run();
+    remove_file(rust_lib_name("bar")).unwrap();
+    remove_file(dynamic_lib_name("bar")).unwrap();
+    run("foo");
+}