Prepare everything for distributing miri via rustup

src/bootstrap/builder.rs

@@ -449,6 +449,7 @@ impl<'a> Builder<'a> {
                 dist::Rls,
                 dist::Rustfmt,
                 dist::Clippy,
+                dist::Miri,
                 dist::LlvmTools,
                 dist::Lldb,
                 dist::Extended,
@@ -461,6 +462,7 @@ impl<'a> Builder<'a> {
                 install::Rls,
                 install::Rustfmt,
                 install::Clippy,
+                install::Miri,
                 install::Analysis,
                 install::Src,
                 install::Rustc

src/bootstrap/dist.rs

@@ -1275,6 +1275,90 @@ impl Step for Clippy {
     }
 }
 
+#[derive(Debug, PartialOrd, Ord, Copy, Clone, Hash, PartialEq, Eq)]
+pub struct Miri {
+    pub stage: u32,
+    pub target: Interned<String>,
+}
+
+impl Step for Miri {
+    type Output = Option<PathBuf>;
+    const ONLY_HOSTS: bool = true;
+
+    fn should_run(run: ShouldRun) -> ShouldRun {
+        run.path("miri")
+    }
+
+    fn make_run(run: RunConfig) {
+        run.builder.ensure(Miri {
+            stage: run.builder.top_stage,
+            target: run.target,
+        });
+    }
+
+    fn run(self, builder: &Builder) -> Option<PathBuf> {
+        let stage = self.stage;
+        let target = self.target;
+        assert!(builder.config.extended);
+
+        builder.info(&format!("Dist miri stage{} ({})", stage, target));
+        let src = builder.src.join("src/tools/miri");
+        let release_num = builder.release_num("miri");
+        let name = pkgname(builder, "miri");
+        let version = builder.miri_info.version(builder, &release_num);
+
+        let tmp = tmpdir(builder);
+        let image = tmp.join("miri-image");
+        drop(fs::remove_dir_all(&image));
+        builder.create_dir(&image);
+
+        // Prepare the image directory
+        // We expect miri to build, because we've exited this step above if tool
+        // state for miri isn't testing.
+        let miri = builder.ensure(tool::Miri {
+            compiler: builder.compiler(stage, builder.config.build),
+            target, extra_features: Vec::new()
+        }).or_else(|| { missing_tool("miri", builder.build.config.missing_tools); None })?;
+        let cargomiri = builder.ensure(tool::CargoMiri {
+            compiler: builder.compiler(stage, builder.config.build),
+            target, extra_features: Vec::new()
+        }).or_else(|| { missing_tool("cargo miri", builder.build.config.missing_tools); None })?;
+
+        builder.install(&miri, &image.join("bin"), 0o755);
+        builder.install(&cargomiri, &image.join("bin"), 0o755);
+        let doc = image.join("share/doc/miri");
+        builder.install(&src.join("README.md"), &doc, 0o644);
+        builder.install(&src.join("LICENSE-APACHE"), &doc, 0o644);
+        builder.install(&src.join("LICENSE-MIT"), &doc, 0o644);
+
+        // Prepare the overlay
+        let overlay = tmp.join("miri-overlay");
+        drop(fs::remove_dir_all(&overlay));
+        t!(fs::create_dir_all(&overlay));
+        builder.install(&src.join("README.md"), &overlay, 0o644);
+        builder.install(&src.join("LICENSE-APACHE"), &doc, 0o644);
+        builder.install(&src.join("LICENSE-MIT"), &doc, 0o644);
+        builder.create(&overlay.join("version"), &version);
+
+        // Generate the installer tarball
+        let mut cmd = rust_installer(builder);
+        cmd.arg("generate")
+           .arg("--product-name=Rust")
+           .arg("--rel-manifest-dir=rustlib")
+           .arg("--success-message=miri-ready-to-serve.")
+           .arg("--image-dir").arg(&image)
+           .arg("--work-dir").arg(&tmpdir(builder))
+           .arg("--output-dir").arg(&distdir(builder))
+           .arg("--non-installed-overlay").arg(&overlay)
+           .arg(format!("--package-name={}-{}", name, target))
+           .arg("--legacy-manifest-dirs=rustlib,cargo")
+           .arg("--component-name=miri-preview");
+
+        builder.run(&mut cmd);
+        Some(distdir(builder).join(format!("{}-{}.tar.gz", name, target)))
+    }
+}
+
 #[derive(Debug, PartialOrd, Ord, Copy, Clone, Hash, PartialEq, Eq)]
 pub struct Rustfmt {
     pub stage: u32,

src/bootstrap/install.rs

@@ -32,6 +32,9 @@ pub fn install_rls(builder: &Builder, stage: u32, host: Interned<String>) {
 pub fn install_clippy(builder: &Builder, stage: u32, host: Interned<String>) {
     install_sh(builder, "clippy", "clippy", stage, Some(host));
 }
+pub fn install_miri(builder: &Builder, stage: u32, host: Interned<String>) {
+    install_sh(builder, "miri", "miri", stage, Some(host));
+}
 
 pub fn install_rustfmt(builder: &Builder, stage: u32, host: Interned<String>) {
     install_sh(builder, "rustfmt", "rustfmt", stage, Some(host));
@@ -217,6 +220,14 @@ install!((self, builder, _config),
             builder.info(&format!("skipping Install clippy stage{} ({})", self.stage, self.target));
         }
     };
+    Miri, "miri", Self::should_build(_config), only_hosts: true, {
+        if builder.ensure(dist::Clippy { stage: self.stage, target: self.target }).is_some() ||
+            Self::should_install(builder) {
+            install_miri(builder, self.stage, self.target);
+        } else {
+            builder.info(&format!("skipping Install miri stage{} ({})", self.stage, self.target));
+        }
+    };
     Rustfmt, "rustfmt", Self::should_build(_config), only_hosts: true, {
         if builder.ensure(dist::Rustfmt { stage: self.stage, target: self.target }).is_some() ||
             Self::should_install(builder) {

src/bootstrap/lib.rs

@@ -253,6 +253,7 @@ pub struct Build {
     cargo_info: channel::GitInfo,
     rls_info: channel::GitInfo,
     clippy_info: channel::GitInfo,
+    miri_info: channel::GitInfo,
     rustfmt_info: channel::GitInfo,
     local_rebuild: bool,
     fail_fast: bool,
@@ -374,6 +375,7 @@ impl Build {
         let cargo_info = channel::GitInfo::new(&config, &src.join("src/tools/cargo"));
         let rls_info = channel::GitInfo::new(&config, &src.join("src/tools/rls"));
         let clippy_info = channel::GitInfo::new(&config, &src.join("src/tools/clippy"));
+        let miri_info = channel::GitInfo::new(&config, &src.join("src/tools/miri"));
         let rustfmt_info = channel::GitInfo::new(&config, &src.join("src/tools/rustfmt"));
 
         let mut build = Build {
@@ -396,6 +398,7 @@ impl Build {
             cargo_info,
             rls_info,
             clippy_info,
+            miri_info,
             rustfmt_info,
             cc: HashMap::new(),
             cxx: HashMap::new(),

src/bootstrap/tool.rs

@@ -592,6 +592,14 @@ tool_extended!((self, builder),
         });
     };
     Miri, miri, "src/tools/miri", "miri", {};
+    CargoMiri, clippy, "src/tools/miri", "cargo-miri", {
+        // Miri depends on procedural macros (serde), which requires a full host
+        // compiler to be available, so we need to depend on that.
+        builder.ensure(compile::Rustc {
+            compiler: self.compiler,
+            target: builder.config.build,
+        });
+    };
     Rls, rls, "src/tools/rls", "rls", {
         let clippy = builder.ensure(Clippy {
             compiler: self.compiler,