rewrite crate-name-priority to rmake

Author: Oneirical

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -16,7 +16,6 @@ run-make/compiler-lookup-paths/Makefile
 run-make/compiler-rt-works-on-mingw/Makefile
 run-make/compressed-debuginfo/Makefile
 run-make/crate-hash-rustc-version/Makefile
-run-make/crate-name-priority/Makefile
 run-make/cross-lang-lto-clang/Makefile
 run-make/cross-lang-lto-pgo-smoketest/Makefile
 run-make/cross-lang-lto-upstream-rlibs/Makefile

tests/run-make/crate-name-priority/Makefile

@@ -0,0 +1,18 @@
+// The `crate_name` rustc flag should have higher priority
+// over `#![crate_name = "foo"]` defined inside the source code.
+// This test has a conflict between crate_names defined in the .rs files
+// and the compiler flags, and checks that the flag is favoured each time.
+// See https://github.com/rust-lang/rust/pull/15518
+
+use run_make_support::{bin_name, fs_wrapper, rustc};
+
+fn main() {
+    rustc().input("foo.rs").run();
+    fs_wrapper::remove_file(bin_name("foo"));
+    rustc().input("foo.rs").crate_name("bar").run();
+    fs_wrapper::remove_file(bin_name("bar"));
+    rustc().input("foo1.rs").run();
+    fs_wrapper::remove_file(bin_name("foo"));
+    rustc().input("foo1.rs").output(bin_name("bar1")).run();
+    fs_wrapper::remove_file(bin_name("bar1"));
+}