migrate tests/run-make/extern-flag-disambiguates to rmake

Author: lolbinarycat

tests/run-make/extern-flag-disambiguates/Makefile

@@ -0,0 +1,30 @@
+//@ ignore-cross-compile
+
+use run_make_support::{cwd, run, run_in_tmpdir, rustc};
+
+// Attempt to build this dependency tree:
+//
+//	A.1   A.2
+//	 |\    |
+//	 | \   |
+//        B  \  C
+//         \ | /
+//          \|/
+//           D
+//
+// Note that A.1 and A.2 are crates with the same name.
+
+fn main() {
+    run_in_tmpdir(|| {
+        rustc().metadata("1").extra_filename("-1").input("a.rs").run();
+        rustc().metadata("2").extra_filename("-2").input("a.rs").run();
+        rustc().input("b.rs").extern_("a", "liba-1.rlib").run();
+        rustc().input("c.rs").extern_("a", "liba-2.rlib").run();
+        println!("before");
+        rustc().cfg("before").input("d.rs").extern_("a", "liba-1.rlib").run();
+        run("d");
+        println!("after");
+        rustc().cfg("after").input("d.rs").extern_("a", "liba-1.rlib").run();
+        run("d");
+    });
+}