Port run-make --print=native-static-libs to rmake.rs

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -220,7 +220,6 @@ run-make/pretty-print-to-file/Makefile
 run-make/pretty-print-with-dep-file/Makefile
 run-make/print-calling-conventions/Makefile
 run-make/print-cfg/Makefile
-run-make/print-native-static-libs/Makefile
 run-make/print-target-list/Makefile
 run-make/profile/Makefile
 run-make/prune-link-args/Makefile

tests/run-make/print-native-static-libs/rmake.rs

@@ -0,0 +1,63 @@
+//! This checks the output of `--print=native-static-libs`
+//!
+//! Specifically, this test makes sure that one and only one
+//! note is emitted with the text "native-static-libs:" as prefix
+//! that the note contains the link args given in the source code
+//! and cli of the current crate and downstream crates.
+//!
+//! It also checks that there aren't any duplicated consecutive
+//! args, as they are useless and suboptimal for debugability.
+//! See https://github.com/rust-lang/rust/issues/113209.
+
+//@ ignore-cross-compile
+//@ ignore-wasm
+
+extern crate run_make_support;
+
+use std::io::BufRead;
+
+use run_make_support::rustc;
+
+fn main() {
+    // build supporting crate
+    rustc()
+        .input("bar.rs")
+        .crate_type("rlib")
+        .arg("-lbar_cli")
+        .run();
+
+    // build main crate as staticlib
+    let output = rustc()
+        .input("foo.rs")
+        .crate_type("staticlib")
+        .arg("-lfoo_cli")
+        .arg("-lfoo_cli") // 2nd time
+        .print("native-static-libs")
+        .run();
+
+    let mut found_note = false;
+    for l in output.stderr.lines() {
+        let l = l.expect("utf-8 string");
+
+        let Some(args) = l.strip_prefix("note: native-static-libs:") else { continue; };
+        assert!(!found_note);
+        found_note = true;
+
+        let args: Vec<&str> = args.trim().split_ascii_whitespace().collect();
+
+        assert!(args.contains(&"-lglib-2.0")); // in bar.rs
+        assert!(args.contains(&"-lsystemd")); // in foo.rs
+        assert!(args.contains(&"-lbar_cli"));
+        assert!(args.contains(&"-lfoo_cli"));
+
+        // make sure that no args are consecutively present
+        let dedup_args: Vec<&str> = {
+            let mut args = args.clone();
+            args.dedup();
+            args
+        };
+        assert_eq!(args, dedup_args);
+    }
+
+    assert!(found_note);
+}