Rollup merge of rust-lang#125773 - GuillaumeGomez:migrate-run-make-cd…

…ylib, r=jieyouxu

Migrate run make cdylib

Part of rust-lang#121876.

r? ``@jieyouxu``

src/tools/run-make-support/src/cc.rs

@@ -80,6 +80,13 @@ impl Cc {
         self
     }
 
+    /// Specify path of the output binary.
+    pub fn output<P: AsRef<Path>>(&mut self, path: P) -> &mut Self {
+        self.cmd.arg("-o");
+        self.cmd.arg(path.as_ref());
+        self
+    }
+
     /// Get the [`Output`][::std::process::Output] of the finished process.
     pub fn command_output(&mut self) -> ::std::process::Output {
         self.cmd.output().expect("failed to get output of finished process")

src/tools/tidy/src/allowed_run_make_makefiles.txt

@@ -14,7 +14,6 @@ run-make/c-unwind-abi-catch-panic/Makefile
 run-make/cat-and-grep-sanity-check/Makefile
 run-make/cdylib-dylib-linkage/Makefile
 run-make/cdylib-fewer-symbols/Makefile
-run-make/cdylib/Makefile
 run-make/codegen-options-parsing/Makefile
 run-make/comment-section/Makefile
 run-make/compiler-lookup-paths-2/Makefile

tests/run-make/cdylib/rmake.rs

@@ -0,0 +1,36 @@
+// This test tries to check that basic cdylib libraries can be compiled and linked successfully
+// with C code, that the cdylib itself can depend on another rlib, and that the library can be built
+// with LTO.
+//
+// - `bar.rs` is a rlib
+// - `foo.rs` is a cdylib that relies on an extern crate `bar` and defines two `extern "C"`
+//   functions:
+//     - `foo()` which calls `bar::bar()`.
+//     - `bar()` which implements basic addition.
+
+//@ ignore-cross-compile
+
+use std::fs::remove_file;
+
+use run_make_support::{cc, dynamic_lib, is_msvc, run, rustc, tmp_dir};
+
+fn main() {
+    rustc().input("bar.rs").run();
+    rustc().input("foo.rs").run();
+
+    if is_msvc() {
+        cc().input("foo.c").arg(tmp_dir().join("foo.dll.lib")).out_exe("foo").run();
+    } else {
+        cc().input("foo.c")
+            .arg("-lfoo")
+            .output(tmp_dir().join("foo"))
+            .library_search_path(tmp_dir())
+            .run();
+    }
+
+    run("foo");
+    remove_file(dynamic_lib("foo")).unwrap();
+
+    rustc().input("foo.rs").arg("-Clto").run();
+    run("foo");
+}