Implement RunMakeSupport tool using the bootstrap_tool! macro

Author: Kobzol

src/bootstrap/src/core/build_steps/test.rs

@@ -1242,59 +1242,6 @@ macro_rules! test {
     };
 }
 
-#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq, Ord, PartialOrd)]
-pub struct RunMakeSupport {
-    pub compiler: Compiler,
-    pub target: TargetSelection,
-}
-
-impl Step for RunMakeSupport {
-    type Output = PathBuf;
-    const DEFAULT: bool = true;
-
-    fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        run.never()
-    }
-
-    fn make_run(run: RunConfig<'_>) {
-        let compiler = run.builder.compiler(run.builder.top_stage, run.build_triple());
-        run.builder.ensure(RunMakeSupport { compiler, target: run.build_triple() });
-    }
-
-    /// Builds run-make-support and returns the path to the resulting rlib.
-    fn run(self, builder: &Builder<'_>) -> PathBuf {
-        builder.ensure(compile::Std::new(self.compiler, self.target));
-
-        let cargo = tool::prepare_tool_cargo(
-            builder,
-            self.compiler,
-            Mode::ToolStd,
-            self.target,
-            Kind::Build,
-            "src/tools/run-make-support",
-            SourceType::InTree,
-            &[],
-        );
-
-        let _guard = builder.msg_tool(
-            Kind::Build,
-            Mode::ToolStd,
-            "run-make-support",
-            self.compiler.stage,
-            &self.compiler.host,
-            &self.target,
-        );
-        cargo.into_cmd().run(builder);
-
-        let lib_name = "librun_make_support.rlib";
-        let lib = builder.tools_dir(self.compiler).join(lib_name);
-
-        let cargo_out = builder.cargo_out(self.compiler, Mode::ToolStd, self.target).join(lib_name);
-        builder.copy_link(&cargo_out, &lib);
-        lib
-    }
-}
-
 /// Runs `cargo test` on the `src/tools/run-make-support` crate.
 /// That crate is used by run-make tests.
 #[derive(Debug, Clone, PartialEq, Eq, Hash)]

src/bootstrap/src/core/build_steps/tool.rs

@@ -467,6 +467,7 @@ bootstrap_tool!(
     UnicodeTableGenerator, "src/tools/unicode-table-generator", "unicode-table-generator";
     FeaturesStatusDump, "src/tools/features-status-dump", "features-status-dump";
     OptimizedDist, "src/tools/opt-dist", "opt-dist", submodules = &["src/tools/rustc-perf"];
+    RunMakeSupport, "src/tools/run-make-support", "run_make_support", artifact_kind = ToolArtifactKind::Library;
 );
 
 /// These are the submodules that are required for rustbook to work due to