Unrolled build for rust-lang#125401

Rollup merge of rust-lang#125401 - GuillaumeGomez:migrate-rustdoc-scrape-examples-macros, r=jieyouxu

Migrate `run-make/rustdoc-scrape-examples-macros` to `rmake.rs`

Part of rust-lang#121876.

r? `````@jieyouxu`````

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -229,7 +229,6 @@ run-make/rlib-format-packed-bundled-libs/Makefile
 run-make/rmeta-preferred/Makefile
 run-make/rustc-macro-dep-files/Makefile
 run-make/rustdoc-io-error/Makefile
-run-make/rustdoc-scrape-examples-macros/Makefile
 run-make/rustdoc-verify-output-files/Makefile
 run-make/rustdoc-with-output-option/Makefile
 run-make/rustdoc-with-short-out-dir-option/Makefile

tests/run-make/rustdoc-scrape-examples-macros/rmake.rs

@@ -0,0 +1,64 @@
+//@ ignore-cross-compile
+
+use run_make_support::{htmldocck, rustc, rustdoc, tmp_dir};
+
+fn main() {
+    let tmp_dir = tmp_dir();
+    let out_dir = tmp_dir.join("rustdoc");
+    let ex_dir = tmp_dir.join("ex.calls");
+    let proc_crate_name = "foobar_macro";
+    let crate_name = "foobar";
+
+    let dylib_name = String::from_utf8(
+        rustc()
+            .crate_name(proc_crate_name)
+            .crate_type("dylib")
+            .arg("--print")
+            .arg("file-names")
+            .arg("-")
+            .command_output()
+            .stdout,
+    )
+    .unwrap();
+
+    rustc()
+        .input("src/proc.rs")
+        .crate_name(proc_crate_name)
+        .edition("2021")
+        .crate_type("proc-macro")
+        .emit("dep-info,link")
+        .run();
+    rustc()
+        .input("src/lib.rs")
+        .crate_name(crate_name)
+        .edition("2021")
+        .crate_type("lib")
+        .emit("dep-info,link")
+        .run();
+
+    rustdoc()
+        .input("examples/ex.rs")
+        .crate_name("ex")
+        .crate_type("bin")
+        .output(&out_dir)
+        .extern_(crate_name, tmp_dir.join(format!("lib{crate_name}.rlib")))
+        .extern_(proc_crate_name, tmp_dir.join(dylib_name.trim()))
+        .arg("-Zunstable-options")
+        .arg("--scrape-examples-output-path")
+        .arg(&ex_dir)
+        .arg("--scrape-examples-target-crate")
+        .arg(crate_name)
+        .run();
+
+    rustdoc()
+        .input("src/lib.rs")
+        .crate_name(crate_name)
+        .crate_type("lib")
+        .output(&out_dir)
+        .arg("-Zunstable-options")
+        .arg("--with-examples")
+        .arg(&ex_dir)
+        .run();
+
+    assert!(htmldocck().arg(out_dir).arg("src/lib.rs").status().unwrap().success());
+}