rewrite rlib-format-packed-bundled-libs-3 to rmake

Author: Oneirical

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -102,7 +102,6 @@ run-make/reproducible-build-2/Makefile
 run-make/reproducible-build/Makefile
 run-make/return-non-c-like-enum-from-c/Makefile
 run-make/rlib-format-packed-bundled-libs-2/Makefile
-run-make/rlib-format-packed-bundled-libs-3/Makefile
 run-make/rlib-format-packed-bundled-libs/Makefile
 run-make/sanitizer-cdylib-link/Makefile
 run-make/sanitizer-dylib-link/Makefile

tests/run-make/rlib-format-packed-bundled-libs-3/Makefile

@@ -0,0 +1,88 @@
+// `-Z packed_bundled_libs` is an unstable rustc flag that makes the compiler
+// only require a native library and no supplementary object files to compile.
+// #105601 made it possible to have this behaviour without an unstable flag by
+// passing +bundle in modifiers, and this test checks that this feature successfully
+// compiles and includes only the static libraries, with no object files.
+// See https://github.com/rust-lang/rust/pull/105601
+
+use run_make_support::{
+    build_native_static_lib, fs_wrapper, is_msvc, llvm_ar, regex, rust_lib_name, rustc,
+    static_lib_name,
+};
+
+// FIXME only-linux test-various
+
+fn main() {
+    build_native_static_lib("native_dep_1");
+    build_native_static_lib("native_dep_2");
+    build_native_static_lib("native_dep_3");
+    build_native_static_lib("native_dep_4");
+    // Test cfg with packed bundle.
+    rustc().input("rust_dep_cfg.rs").crate_type("rlib").run();
+    rustc()
+        .input("main.rs")
+        .extern_("rust_dep", rust_lib_name("rust_dep_cfg"))
+        .crate_type("staticlib")
+        .cfg("should_add")
+        .run();
+    // Only static libraries should appear, no object files at all.
+    llvm_ar()
+        .arg("t")
+        .arg(rust_lib_name("rust_dep_cfg"))
+        .run()
+        .assert_stdout_contains(static_lib_name("native_dep_1"));
+    llvm_ar()
+        .arg("t")
+        .arg(rust_lib_name("rust_dep_cfg"))
+        .run()
+        .assert_stdout_contains(static_lib_name("native_dep_2"));
+    llvm_ar()
+        .arg("t")
+        .arg(static_lib_name("main"))
+        .run()
+        .assert_stdout_contains(object_file_name("native_dep_1"));
+    llvm_ar()
+        .arg("t")
+        .arg(static_lib_name("main"))
+        .run()
+        .assert_stdout_not_contains(object_file_name("native_dep_2"));
+
+    // Test bundle with whole archive.
+    rustc().input("rust_dep.rs").crate_type("rlib").run();
+    // Only deps with `+bundle` should appear.
+    llvm_ar().arg("t").arg(rust_lib_name("rust_dep")).run().assert_stdout_contains("native_dep_1");
+    llvm_ar().arg("t").arg(rust_lib_name("rust_dep")).run().assert_stdout_contains("native_dep_3");
+    llvm_ar()
+        .arg("t")
+        .arg(rust_lib_name("rust_dep"))
+        .run()
+        .assert_stdout_not_contains("native_dep_2");
+    llvm_ar()
+        .arg("t")
+        .arg(rust_lib_name("rust_dep"))
+        .run()
+        .assert_stdout_not_contains("native_dep_4");
+
+    // The compiler shouldn't use files which it doesn't know about.
+    fs_wrapper::remove_file(static_lib_name("native_dep_1"));
+    fs_wrapper::remove_file(static_lib_name("native_dep_3"));
+
+    let out = rustc()
+        .input("main.rs")
+        .extern_("rust_dep", rust_lib_name("rust_dep"))
+        .print("link-args")
+        .run()
+        .assert_stdout_not_contains("native_dep_3")
+        .stdout_utf8();
+
+    let re = regex::Regex::new(
+"--whole-archive.*native_dep_1.*--whole-archive.*lnative_dep_2.*no-whole-archive.*lnative_dep_4"
+    ).unwrap();
+
+    assert!(re.is_match(&out));
+}
+
+//FIXME(Oneirical): potential helper fn if this works on msvc too
+fn object_file_name(name: &str) -> String {
+    if is_msvc() { format!("{name}.obj") } else { format!("{name}.o") }
+}