Auto merge of rust-lang#72058 - RalfJung:no-dist-lldb, r=Mark-Simulacrum

bootstrap: remove lldb dist packaging

The lldb-preview rustup package is missing on every single target, and has never been shipped beyond x86_64-apple-darwin. It was removed in rust-lang#62592 which landed around a year ago, and there's not been demand that we re-enable it since, so we're now removing support entirely to cleanup the code a bit.

The hope is that this will also kill the useless "lldb-preview" row on https://rust-lang.github.io/rustup-components-history/.

Author: bors

config.toml.example

@@ -411,10 +411,6 @@
 # sysroot.
 #llvm-tools = false
 
-# Indicates whether LLDB will be made available in the sysroot.
-# This is only built if LLVM is also being built.
-#lldb = false
-
 # Whether to deny warnings in crates
 #deny-warnings = true
 

src/bootstrap/builder.rs

@@ -439,7 +439,6 @@ impl<'a> Builder<'a> {
                 dist::Clippy,
                 dist::Miri,
                 dist::LlvmTools,
-                dist::Lldb,
                 dist::Extended,
                 dist::HashSign
             ),

src/bootstrap/config.rs

@@ -85,7 +85,6 @@ pub struct Config {
 
     pub use_lld: bool,
     pub lld_enabled: bool,
-    pub lldb_enabled: bool,
     pub llvm_tools_enabled: bool,
 
     pub llvm_cflags: Option<String>,
@@ -337,7 +336,6 @@ struct Rust {
     lld: Option<bool>,
     use_lld: Option<bool>,
     llvm_tools: Option<bool>,
-    lldb: Option<bool>,
     deny_warnings: Option<bool>,
     backtrace_on_ice: Option<bool>,
     verify_llvm_ir: Option<bool>,
@@ -585,7 +583,6 @@ impl Config {
             }
             set(&mut config.use_lld, rust.use_lld);
             set(&mut config.lld_enabled, rust.lld);
-            set(&mut config.lldb_enabled, rust.lldb);
             set(&mut config.llvm_tools_enabled, rust.llvm_tools);
             config.rustc_parallel = rust.parallel_compiler.unwrap_or(false);
             config.rustc_default_linker = rust.default_linker.clone();

src/bootstrap/configure.py

@@ -57,7 +57,6 @@ def v(*args):
 o("profiler", "build.profiler", "build the profiler runtime")
 o("full-tools", None, "enable all tools")
 o("lld", "rust.lld", "build lld")
-o("lldb", "rust.lldb", "build lldb")
 o("missing-tools", "dist.missing-tools", "allow failures when building tools")
 o("use-libcxx", "llvm.use-libcxx", "build LLVM with libc++")
 o("control-flow-guard", "rust.control-flow-guard", "Enable Control Flow Guard")

src/bootstrap/dist.rs

@@ -38,8 +38,6 @@ pub fn pkgname(builder: &Builder<'_>, component: &str) -> String {
         format!("{}-{}", component, builder.rustfmt_package_vers())
     } else if component == "llvm-tools" {
         format!("{}-{}", component, builder.llvm_tools_package_vers())
-    } else if component == "lldb" {
-        format!("{}-{}", component, builder.lldb_package_vers())
     } else {
         assert!(component.starts_with("rust"));
         format!("{}-{}", component, builder.rust_package_vers())
@@ -1645,7 +1643,6 @@ impl Step for Extended {
         let llvm_tools_installer = builder.ensure(LlvmTools { target });
         let clippy_installer = builder.ensure(Clippy { compiler, target });
         let miri_installer = builder.ensure(Miri { compiler, target });
-        let lldb_installer = builder.ensure(Lldb { target });
         let mingw_installer = builder.ensure(Mingw { host: target });
         let analysis_installer = builder.ensure(Analysis { compiler, target });
 
@@ -1681,7 +1678,6 @@ impl Step for Extended {
         tarballs.extend(miri_installer.clone());
         tarballs.extend(rustfmt_installer.clone());
         tarballs.extend(llvm_tools_installer);
-        tarballs.extend(lldb_installer);
         tarballs.push(analysis_installer);
         tarballs.push(std_installer);
         if builder.config.docs {
@@ -2222,7 +2218,6 @@ impl Step for HashSign {
         cmd.arg(builder.package_vers(&builder.release_num("miri")));
         cmd.arg(builder.package_vers(&builder.release_num("rustfmt")));
         cmd.arg(builder.llvm_tools_package_vers());
-        cmd.arg(builder.lldb_package_vers());
 
         builder.create_dir(&distdir(builder));
 
@@ -2349,119 +2344,3 @@ impl Step for LlvmTools {
         Some(distdir(builder).join(format!("{}-{}.tar.gz", name, target)))
     }
 }
-
-#[derive(Clone, Debug, Eq, Hash, PartialEq)]
-pub struct Lldb {
-    pub target: Interned<String>,
-}
-
-impl Step for Lldb {
-    type Output = Option<PathBuf>;
-    const ONLY_HOSTS: bool = true;
-    const DEFAULT: bool = true;
-
-    fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> {
-        run.path("src/llvm-project/lldb").path("src/tools/lldb")
-    }
-
-    fn make_run(run: RunConfig<'_>) {
-        run.builder.ensure(Lldb { target: run.target });
-    }
-
-    fn run(self, builder: &Builder<'_>) -> Option<PathBuf> {
-        let target = self.target;
-
-        if builder.config.dry_run {
-            return None;
-        }
-
-        let bindir = builder.llvm_out(target).join("bin");
-        let lldb_exe = bindir.join(exe("lldb", &target));
-        if !lldb_exe.exists() {
-            return None;
-        }
-
-        builder.info(&format!("Dist Lldb ({})", target));
-        let src = builder.src.join("src/llvm-project/lldb");
-        let name = pkgname(builder, "lldb");
-
-        let tmp = tmpdir(builder);
-        let image = tmp.join("lldb-image");
-        drop(fs::remove_dir_all(&image));
-
-        // Prepare the image directory
-        let root = image.join("lib/rustlib").join(&*target);
-        let dst = root.join("bin");
-        t!(fs::create_dir_all(&dst));
-        for program in &["lldb", "lldb-argdumper", "lldb-mi", "lldb-server"] {
-            let exe = bindir.join(exe(program, &target));
-            builder.install(&exe, &dst, 0o755);
-        }
-
-        // The libraries.
-        let libdir = builder.llvm_out(target).join("lib");
-        let dst = root.join("lib");
-        t!(fs::create_dir_all(&dst));
-        for entry in t!(fs::read_dir(&libdir)) {
-            let entry = entry.unwrap();
-            if let Ok(name) = entry.file_name().into_string() {
-                if name.starts_with("liblldb.") && !name.ends_with(".a") {
-                    if t!(entry.file_type()).is_symlink() {
-                        builder.copy_to_folder(&entry.path(), &dst);
-                    } else {
-                        builder.install(&entry.path(), &dst, 0o755);
-                    }
-                }
-            }
-        }
-
-        // The lldb scripts might be installed in lib/python$version
-        // or in lib64/python$version.  If lib64 exists, use it;
-        // otherwise lib.
-        let libdir = builder.llvm_out(target).join("lib64");
-        let (libdir, libdir_name) = if libdir.exists() {
-            (libdir, "lib64")
-        } else {
-            (builder.llvm_out(target).join("lib"), "lib")
-        };
-        for entry in t!(fs::read_dir(&libdir)) {
-            let entry = t!(entry);
-            if let Ok(name) = entry.file_name().into_string() {
-                if name.starts_with("python") {
-                    let dst = root.join(libdir_name).join(entry.file_name());
-                    t!(fs::create_dir_all(&dst));
-                    builder.cp_r(&entry.path(), &dst);
-                    break;
-                }
-            }
-        }
-
-        // Prepare the overlay
-        let overlay = tmp.join("lldb-overlay");
-        drop(fs::remove_dir_all(&overlay));
-        builder.create_dir(&overlay);
-        builder.install(&src.join("LICENSE.TXT"), &overlay, 0o644);
-        builder.create(&overlay.join("version"), &builder.lldb_vers());
-
-        // 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=lldb-installed.")
-            .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=lldb-preview");
-
-        builder.run(&mut cmd);
-        Some(distdir(builder).join(format!("{}-{}.tar.gz", name, target)))
-    }
-}

src/bootstrap/lib.rs

@@ -1029,14 +1029,6 @@ impl Build {
         self.rust_version()
     }
 
-    fn lldb_package_vers(&self) -> String {
-        self.package_vers(channel::CFG_RELEASE_NUM)
-    }
-
-    fn lldb_vers(&self) -> String {
-        self.rust_version()
-    }
-
     fn llvm_link_tools_dynamically(&self, target: Interned<String>) -> bool {
         target.contains("linux-gnu") || target.contains("apple-darwin")
     }

src/bootstrap/native.rs

@@ -184,7 +184,7 @@ impl Step for Llvm {
         }
 
         // For distribution we want the LLVM tools to be *statically* linked to libstdc++
-        if builder.config.llvm_tools_enabled || builder.config.lldb_enabled {
+        if builder.config.llvm_tools_enabled {
             if !target.contains("msvc") {
                 if target.contains("apple") {
                     cfg.define("CMAKE_EXE_LINKER_FLAGS", "-static-libstdc++");
@@ -212,17 +212,9 @@ impl Step for Llvm {
             enabled_llvm_projects.push("compiler-rt");
         }
 
-        if builder.config.lldb_enabled {
-            enabled_llvm_projects.push("clang");
-            enabled_llvm_projects.push("lldb");
-            // For the time being, disable code signing.
-            cfg.define("LLDB_CODESIGN_IDENTITY", "");
-            cfg.define("LLDB_NO_DEBUGSERVER", "ON");
-        } else {
-            // LLDB requires libxml2; but otherwise we want it to be disabled.
-            // See https://github.com/rust-lang/rust/pull/50104
-            cfg.define("LLVM_ENABLE_LIBXML2", "OFF");
-        }
+        // We want libxml to be disabled.
+        // See https://github.com/rust-lang/rust/pull/50104
+        cfg.define("LLVM_ENABLE_LIBXML2", "OFF");
 
         if !enabled_llvm_projects.is_empty() {
             enabled_llvm_projects.sort();

src/bootstrap/sanity.rs

@@ -117,14 +117,6 @@ pub fn check(build: &mut Build) {
                 build.config.ninja = true;
             }
         }
-
-        if build.config.lldb_enabled {
-            cmd_finder.must_have("swig");
-            let out = output(Command::new("swig").arg("-version"));
-            if !out.contains("SWIG Version 3") && !out.contains("SWIG Version 4") {
-                panic!("Ensure that Swig 3.x.x or 4.x.x is installed.");
-            }
-        }
     }
 
     build.config.python = build

src/bootstrap/test.rs

@@ -1096,20 +1096,15 @@ impl Step for Compiletest {
                     .to_string()
             })
         };
-        let lldb_exe = if builder.config.lldb_enabled {
-            // Test against the lldb that was just built.
-            builder.llvm_out(target).join("bin").join("lldb")
-        } else {
-            PathBuf::from("lldb")
-        };
-        let lldb_version = Command::new(&lldb_exe)
+        let lldb_exe = "lldb";
+        let lldb_version = Command::new(lldb_exe)
             .arg("--version")
             .output()
             .map(|output| String::from_utf8_lossy(&output.stdout).to_string())
             .ok();
         if let Some(ref vers) = lldb_version {
             cmd.arg("--lldb-version").arg(vers);
-            let lldb_python_dir = run(Command::new(&lldb_exe).arg("-P")).ok();
+            let lldb_python_dir = run(Command::new(lldb_exe).arg("-P")).ok();
             if let Some(ref dir) = lldb_python_dir {
                 cmd.arg("--lldb-python-dir").arg(dir);
             }