Rollup merge of rust-lang#128696 - Oneirical:second-linkage-rampage, r=jieyouxu

Migrate `staticlib-dylib-linkage` `run-make` test to rmake

Part of rust-lang#121876 and the associated [Google Summer of Code project](https://blog.rust-lang.org/2024/05/01/gsoc-2024-selected-projects.html).

I'm quite sure this has the same issue as the one brought up in [this discussion](rust-lang#128407 (comment)), so I elected to keep the ignore MSVC.

try-job: aarch64-apple
try-job: x86_64-gnu-llvm-17
try-job: armhf-gnu

Author: matthiaskrgr

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -22,7 +22,6 @@ run-make/reproducible-build/Makefile
 run-make/rlib-format-packed-bundled-libs/Makefile
 run-make/simd-ffi/Makefile
 run-make/split-debuginfo/Makefile
-run-make/staticlib-dylib-linkage/Makefile
 run-make/symbol-mangling-hashed/Makefile
 run-make/sysroot-crates-are-unstable/Makefile
 run-make/thumb-none-qemu/Makefile

tests/run-make/staticlib-dylib-linkage/Makefile

@@ -0,0 +1,37 @@
+// A basic smoke test to check that rustc supports linking to a rust dylib with
+// --crate-type staticlib. bar is a dylib, on which foo is dependent - the native
+// static lib search paths are collected and used to compile foo.c, the final executable
+// which depends on both foo and bar.
+// See https://github.com/rust-lang/rust/pull/106560
+
+//@ ignore-cross-compile
+// Reason: the compiled binary is executed.
+//@ ignore-wasm
+// Reason: WASM does not support dynamic libraries
+//@ ignore-msvc
+//FIXME(Oneirical): Getting this to work on MSVC requires passing libcmt.lib to CC,
+// which is not trivial to do.
+// Tracking issue: https://github.com/rust-lang/rust/issues/128602
+// Discussion: https://github.com/rust-lang/rust/pull/128407#discussion_r1702439172
+
+use run_make_support::{cc, regex, run, rustc};
+
+fn main() {
+    rustc().arg("-Cprefer-dynamic").input("bar.rs").run();
+    let libs = rustc()
+        .input("foo.rs")
+        .crate_type("staticlib")
+        .print("native-static-libs")
+        .arg("-Zstaticlib-allow-rdylib-deps")
+        .run()
+        .assert_stderr_contains("note: native-static-libs: ")
+        .stderr_utf8();
+    let re = regex::Regex::new(r#"note: native-static-libs:\s*(.+)"#).unwrap();
+    let libs = re.find(&libs).unwrap().as_str().trim();
+    // remove the note
+    let (_, library_search_paths) = libs.split_once("note: native-static-libs: ").unwrap();
+    // divide the command-line arguments in a vec
+    let library_search_paths = library_search_paths.split(' ').collect::<Vec<&str>>();
+    cc().input("foo.c").arg("-lfoo").args(library_search_paths).out_exe("foo").run();
+    run("foo");
+}