| use std::any::Any; |
| use std::cell::{Cell, RefCell}; |
| use std::collections::BTreeSet; |
| use std::collections::HashMap; |
| use std::env; |
| use std::ffi::OsStr; |
| use std::fmt::Debug; |
| use std::fs; |
| use std::hash::Hash; |
| use std::ops::Deref; |
| use std::path::{Path, PathBuf}; |
| use std::process::Command; |
| use std::time::{Duration, Instant}; |
| |
| use build_helper::t; |
| |
| use crate::cache::{Cache, Interned, INTERNER}; |
| use crate::check; |
| use crate::compile; |
| use crate::dist; |
| use crate::doc; |
| use crate::flags::Subcommand; |
| use crate::install; |
| use crate::native; |
| use crate::test; |
| use crate::tool; |
| use crate::util::{self, add_lib_path, exe, libdir}; |
| use crate::{Build, DocTests, Mode, GitRepo}; |
| |
| pub use crate::Compiler; |
| |
| use petgraph::graph::NodeIndex; |
| use petgraph::Graph; |
| |
| pub struct Builder<'a> { |
| pub build: &'a Build, |
| pub top_stage: u32, |
| pub kind: Kind, |
| cache: Cache, |
| stack: RefCell<Vec<Box<dyn Any>>>, |
| time_spent_on_dependencies: Cell<Duration>, |
| pub paths: Vec<PathBuf>, |
| graph_nodes: RefCell<HashMap<String, NodeIndex>>, |
| graph: RefCell<Graph<String, bool>>, |
| parent: Cell<Option<NodeIndex>>, |
| } |
| |
| impl<'a> Deref for Builder<'a> { |
| type Target = Build; |
| |
| fn deref(&self) -> &Self::Target { |
| self.build |
| } |
| } |
| |
| pub trait Step: 'static + Clone + Debug + PartialEq + Eq + Hash { |
| /// `PathBuf` when directories are created or to return a `Compiler` once |
| /// it's been assembled. |
| type Output: Clone; |
| |
| const DEFAULT: bool = false; |
| |
| /// If true, then this rule should be skipped if --target was specified, but --host was not |
| const ONLY_HOSTS: bool = false; |
| |
| /// Primary function to execute this rule. Can call `builder.ensure()` |
| /// with other steps to run those. |
| fn run(self, builder: &Builder<'_>) -> Self::Output; |
| |
| /// When bootstrap is passed a set of paths, this controls whether this rule |
| /// will execute. However, it does not get called in a "default" context |
| /// when we are not passed any paths; in that case, `make_run` is called |
| /// directly. |
| fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_>; |
| |
| /// Builds up a "root" rule, either as a default rule or from a path passed |
| /// to us. |
| /// |
| /// When path is `None`, we are executing in a context where no paths were |
| /// passed. When `./x.py build` is run, for example, this rule could get |
| /// called if it is in the correct list below with a path of `None`. |
| fn make_run(_run: RunConfig<'_>) { |
| // It is reasonable to not have an implementation of make_run for rules |
| // who do not want to get called from the root context. This means that |
| // they are likely dependencies (e.g., sysroot creation) or similar, and |
| // as such calling them from ./x.py isn't logical. |
| unimplemented!() |
| } |
| } |
| |
| pub struct RunConfig<'a> { |
| pub builder: &'a Builder<'a>, |
| pub host: Interned<String>, |
| pub target: Interned<String>, |
| pub path: PathBuf, |
| } |
| |
| struct StepDescription { |
| default: bool, |
| only_hosts: bool, |
| should_run: fn(ShouldRun<'_>) -> ShouldRun<'_>, |
| make_run: fn(RunConfig<'_>), |
| name: &'static str, |
| } |
| |
| #[derive(Debug, Clone, PartialOrd, Ord, PartialEq, Eq)] |
| pub enum PathSet { |
| Set(BTreeSet<PathBuf>), |
| Suite(PathBuf), |
| } |
| |
| impl PathSet { |
| fn empty() -> PathSet { |
| PathSet::Set(BTreeSet::new()) |
| } |
| |
| fn one<P: Into<PathBuf>>(path: P) -> PathSet { |
| let mut set = BTreeSet::new(); |
| set.insert(path.into()); |
| PathSet::Set(set) |
| } |
| |
| fn has(&self, needle: &Path) -> bool { |
| match self { |
| PathSet::Set(set) => set.iter().any(|p| p.ends_with(needle)), |
| PathSet::Suite(suite) => suite.ends_with(needle), |
| } |
| } |
| |
| fn path(&self, builder: &Builder<'_>) -> PathBuf { |
| match self { |
| PathSet::Set(set) => set |
| .iter() |
| .next() |
| .unwrap_or(&builder.build.src) |
| .to_path_buf(), |
| PathSet::Suite(path) => PathBuf::from(path), |
| } |
| } |
| } |
| |
| impl StepDescription { |
| fn from<S: Step>() -> StepDescription { |
| StepDescription { |
| default: S::DEFAULT, |
| only_hosts: S::ONLY_HOSTS, |
| should_run: S::should_run, |
| make_run: S::make_run, |
| name: std::any::type_name::<S>(), |
| } |
| } |
| |
| fn maybe_run(&self, builder: &Builder<'_>, pathset: &PathSet) { |
| if builder.config.exclude.iter().any(|e| pathset.has(e)) { |
| eprintln!("Skipping {:?} because it is excluded", pathset); |
| return; |
| } else if !builder.config.exclude.is_empty() { |
| eprintln!( |
| "{:?} not skipped for {:?} -- not in {:?}", |
| pathset, self.name, builder.config.exclude |
| ); |
| } |
| let hosts = &builder.hosts; |
| |
| // Determine the targets participating in this rule. |
| let targets = if self.only_hosts { |
| if builder.config.skip_only_host_steps { |
| return; // don't run anything |
| } else { |
| &builder.hosts |
| } |
| } else { |
| &builder.targets |
| }; |
| |
| for host in hosts { |
| for target in targets { |
| let run = RunConfig { |
| builder, |
| path: pathset.path(builder), |
| host: *host, |
| target: *target, |
| }; |
| (self.make_run)(run); |
| } |
| } |
| } |
| |
| fn run(v: &[StepDescription], builder: &Builder<'_>, paths: &[PathBuf]) { |
| let should_runs = v |
| .iter() |
| .map(|desc| (desc.should_run)(ShouldRun::new(builder))) |
| .collect::<Vec<_>>(); |
| |
| // sanity checks on rules |
| for (desc, should_run) in v.iter().zip(&should_runs) { |
| assert!( |
| !should_run.paths.is_empty(), |
| "{:?} should have at least one pathset", |
| desc.name |
| ); |
| } |
| |
| if paths.is_empty() { |
| for (desc, should_run) in v.iter().zip(should_runs) { |
| if desc.default && should_run.is_really_default { |
| for pathset in &should_run.paths { |
| desc.maybe_run(builder, pathset); |
| } |
| } |
| } |
| } else { |
| for path in paths { |
| // strip CurDir prefix if present |
| let path = match path.strip_prefix(".") { |
| Ok(p) => p, |
| Err(_) => path, |
| }; |
| |
| let mut attempted_run = false; |
| for (desc, should_run) in v.iter().zip(&should_runs) { |
| if let Some(suite) = should_run.is_suite_path(path) { |
| attempted_run = true; |
| desc.maybe_run(builder, suite); |
| } else if let Some(pathset) = should_run.pathset_for_path(path) { |
| attempted_run = true; |
| desc.maybe_run(builder, pathset); |
| } |
| } |
| |
| if !attempted_run { |
| panic!("Error: no rules matched {}.", path.display()); |
| } |
| } |
| } |
| } |
| } |
| |
| #[derive(Clone)] |
| pub struct ShouldRun<'a> { |
| pub builder: &'a Builder<'a>, |
| // use a BTreeSet to maintain sort order |
| paths: BTreeSet<PathSet>, |
| |
| // If this is a default rule, this is an additional constraint placed on |
| // its run. Generally something like compiler docs being enabled. |
| is_really_default: bool, |
| } |
| |
| impl<'a> ShouldRun<'a> { |
| fn new(builder: &'a Builder<'_>) -> ShouldRun<'a> { |
| ShouldRun { |
| builder, |
| paths: BTreeSet::new(), |
| is_really_default: true, // by default no additional conditions |
| } |
| } |
| |
| pub fn default_condition(mut self, cond: bool) -> Self { |
| self.is_really_default = cond; |
| self |
| } |
| |
| // Unlike `krate` this will create just one pathset. As such, it probably shouldn't actually |
| // ever be used, but as we transition to having all rules properly handle passing krate(...) by |
| // actually doing something different for every crate passed. |
| pub fn all_krates(mut self, name: &str) -> Self { |
| let mut set = BTreeSet::new(); |
| for krate in self.builder.in_tree_crates(name) { |
| set.insert(PathBuf::from(&krate.path)); |
| } |
| self.paths.insert(PathSet::Set(set)); |
| self |
| } |
| |
| pub fn krate(mut self, name: &str) -> Self { |
| for krate in self.builder.in_tree_crates(name) { |
| self.paths.insert(PathSet::one(&krate.path)); |
| } |
| self |
| } |
| |
| // single, non-aliased path |
| pub fn path(self, path: &str) -> Self { |
| self.paths(&[path]) |
| } |
| |
| // multiple aliases for the same job |
| pub fn paths(mut self, paths: &[&str]) -> Self { |
| self.paths |
| .insert(PathSet::Set(paths.iter().map(PathBuf::from).collect())); |
| self |
| } |
| |
| pub fn is_suite_path(&self, path: &Path) -> Option<&PathSet> { |
| self.paths.iter().find(|pathset| match pathset { |
| PathSet::Suite(p) => path.starts_with(p), |
| PathSet::Set(_) => false, |
| }) |
| } |
| |
| pub fn suite_path(mut self, suite: &str) -> Self { |
| self.paths.insert(PathSet::Suite(PathBuf::from(suite))); |
| self |
| } |
| |
| // allows being more explicit about why should_run in Step returns the value passed to it |
| pub fn never(mut self) -> ShouldRun<'a> { |
| self.paths.insert(PathSet::empty()); |
| self |
| } |
| |
| fn pathset_for_path(&self, path: &Path) -> Option<&PathSet> { |
| self.paths.iter().find(|pathset| pathset.has(path)) |
| } |
| } |
| |
| #[derive(Copy, Clone, PartialEq, Eq, Debug)] |
| pub enum Kind { |
| Build, |
| Check, |
| Clippy, |
| Fix, |
| Test, |
| Bench, |
| Dist, |
| Doc, |
| Install, |
| } |
| |
| impl<'a> Builder<'a> { |
| fn get_step_descriptions(kind: Kind) -> Vec<StepDescription> { |
| macro_rules! describe { |
| ($($rule:ty),+ $(,)?) => {{ |
| vec![$(StepDescription::from::<$rule>()),+] |
| }}; |
| } |
| match kind { |
| Kind::Build => describe!( |
| compile::Std, |
| compile::Rustc, |
| compile::CodegenBackend, |
| compile::StartupObjects, |
| tool::BuildManifest, |
| tool::Rustbook, |
| tool::ErrorIndex, |
| tool::UnstableBookGen, |
| tool::Tidy, |
| tool::Linkchecker, |
| tool::CargoTest, |
| tool::Compiletest, |
| tool::RemoteTestServer, |
| tool::RemoteTestClient, |
| tool::RustInstaller, |
| tool::Cargo, |
| tool::Rls, |
| tool::Rustdoc, |
| tool::Clippy, |
| native::Llvm, |
| tool::Rustfmt, |
| tool::Miri, |
| native::Lld |
| ), |
| Kind::Check | Kind::Clippy | Kind::Fix => describe!( |
| check::Std, |
| check::Rustc, |
| check::CodegenBackend, |
| check::Rustdoc |
| ), |
| Kind::Test => describe!( |
| crate::toolstate::ToolStateCheck, |
| test::Tidy, |
| test::Ui, |
| test::CompileFail, |
| test::RunFail, |
| test::RunPassValgrind, |
| test::MirOpt, |
| test::Codegen, |
| test::CodegenUnits, |
| test::Assembly, |
| test::Incremental, |
| test::Debuginfo, |
| test::UiFullDeps, |
| test::Rustdoc, |
| test::Pretty, |
| test::RunFailPretty, |
| test::RunPassValgrindPretty, |
| test::Crate, |
| test::CrateLibrustc, |
| test::CrateRustdoc, |
| test::Linkcheck, |
| test::Cargotest, |
| test::Cargo, |
| test::Rls, |
| test::ErrorIndex, |
| test::Distcheck, |
| test::RunMakeFullDeps, |
| test::Nomicon, |
| test::Reference, |
| test::RustdocBook, |
| test::RustByExample, |
| test::TheBook, |
| test::UnstableBook, |
| test::RustcBook, |
| test::RustcGuide, |
| test::EmbeddedBook, |
| test::EditionGuide, |
| test::Rustfmt, |
| test::Miri, |
| test::Clippy, |
| test::CompiletestTest, |
| test::RustdocJSStd, |
| test::RustdocJSNotStd, |
| test::RustdocTheme, |
| test::RustdocUi, |
| // Run bootstrap close to the end as it's unlikely to fail |
| test::Bootstrap, |
| // Run run-make last, since these won't pass without make on Windows |
| test::RunMake, |
| ), |
| Kind::Bench => describe!(test::Crate, test::CrateLibrustc), |
| Kind::Doc => describe!( |
| doc::UnstableBook, |
| doc::UnstableBookGen, |
| doc::TheBook, |
| doc::Standalone, |
| doc::Std, |
| doc::Rustc, |
| doc::Rustdoc, |
| doc::ErrorIndex, |
| doc::Nomicon, |
| doc::Reference, |
| doc::RustdocBook, |
| doc::RustByExample, |
| doc::RustcBook, |
| doc::CargoBook, |
| doc::EmbeddedBook, |
| doc::EditionGuide, |
| ), |
| Kind::Dist => describe!( |
| dist::Docs, |
| dist::RustcDocs, |
| dist::Mingw, |
| dist::Rustc, |
| dist::DebuggerScripts, |
| dist::Std, |
| dist::RustcDev, |
| dist::Analysis, |
| dist::Src, |
| dist::PlainSourceTarball, |
| dist::Cargo, |
| dist::Rls, |
| dist::Rustfmt, |
| dist::Clippy, |
| dist::Miri, |
| dist::LlvmTools, |
| dist::Lldb, |
| dist::Extended, |
| dist::HashSign |
| ), |
| Kind::Install => describe!( |
| install::Docs, |
| install::Std, |
| install::Cargo, |
| install::Rls, |
| install::Rustfmt, |
| install::Clippy, |
| install::Miri, |
| install::Analysis, |
| install::Src, |
| install::Rustc |
| ), |
| } |
| } |
| |
| pub fn get_help(build: &Build, subcommand: &str) -> Option<String> { |
| let kind = match subcommand { |
| "build" => Kind::Build, |
| "doc" => Kind::Doc, |
| "test" => Kind::Test, |
| "bench" => Kind::Bench, |
| "dist" => Kind::Dist, |
| "install" => Kind::Install, |
| _ => return None, |
| }; |
| |
| let builder = Builder { |
| build, |
| top_stage: build.config.stage.unwrap_or(2), |
| kind, |
| cache: Cache::new(), |
| stack: RefCell::new(Vec::new()), |
| time_spent_on_dependencies: Cell::new(Duration::new(0, 0)), |
| paths: vec![], |
| graph_nodes: RefCell::new(HashMap::new()), |
| graph: RefCell::new(Graph::new()), |
| parent: Cell::new(None), |
| }; |
| |
| let builder = &builder; |
| let mut should_run = ShouldRun::new(builder); |
| for desc in Builder::get_step_descriptions(builder.kind) { |
| should_run = (desc.should_run)(should_run); |
| } |
| let mut help = String::from("Available paths:\n"); |
| for pathset in should_run.paths { |
| if let PathSet::Set(set) = pathset { |
| set.iter().for_each(|path| { |
| help.push_str( |
| format!(" ./x.py {} {}\n", subcommand, path.display()).as_str(), |
| ) |
| }) |
| } |
| } |
| Some(help) |
| } |
| |
| pub fn new(build: &Build) -> Builder<'_> { |
| let (kind, paths) = match build.config.cmd { |
| Subcommand::Build { ref paths } => (Kind::Build, &paths[..]), |
| Subcommand::Check { ref paths } => (Kind::Check, &paths[..]), |
| Subcommand::Clippy { ref paths } => (Kind::Clippy, &paths[..]), |
| Subcommand::Fix { ref paths } => (Kind::Fix, &paths[..]), |
| Subcommand::Doc { ref paths } => (Kind::Doc, &paths[..]), |
| Subcommand::Test { ref paths, .. } => (Kind::Test, &paths[..]), |
| Subcommand::Bench { ref paths, .. } => (Kind::Bench, &paths[..]), |
| Subcommand::Dist { ref paths } => (Kind::Dist, &paths[..]), |
| Subcommand::Install { ref paths } => (Kind::Install, &paths[..]), |
| Subcommand::Clean { .. } => panic!(), |
| }; |
| |
| let builder = Builder { |
| build, |
| top_stage: build.config.stage.unwrap_or(2), |
| kind, |
| cache: Cache::new(), |
| stack: RefCell::new(Vec::new()), |
| time_spent_on_dependencies: Cell::new(Duration::new(0, 0)), |
| paths: paths.to_owned(), |
| graph_nodes: RefCell::new(HashMap::new()), |
| graph: RefCell::new(Graph::new()), |
| parent: Cell::new(None), |
| }; |
| |
| builder |
| } |
| |
| pub fn execute_cli(&self) -> Graph<String, bool> { |
| self.run_step_descriptions(&Builder::get_step_descriptions(self.kind), &self.paths); |
| self.graph.borrow().clone() |
| } |
| |
| pub fn default_doc(&self, paths: Option<&[PathBuf]>) { |
| let paths = paths.unwrap_or(&[]); |
| self.run_step_descriptions(&Builder::get_step_descriptions(Kind::Doc), paths); |
| } |
| |
| fn run_step_descriptions(&self, v: &[StepDescription], paths: &[PathBuf]) { |
| StepDescription::run(v, self, paths); |
| } |
| |
| /// Obtain a compiler at a given stage and for a given host. Explicitly does |
| /// not take `Compiler` since all `Compiler` instances are meant to be |
| /// obtained through this function, since it ensures that they are valid |
| /// (i.e., built and assembled). |
| pub fn compiler(&self, stage: u32, host: Interned<String>) -> Compiler { |
| self.ensure(compile::Assemble { |
| target_compiler: Compiler { stage, host }, |
| }) |
| } |
| |
| /// Similar to `compiler`, except handles the full-bootstrap option to |
| /// silently use the stage1 compiler instead of a stage2 compiler if one is |
| /// requested. |
| /// |
| /// Note that this does *not* have the side effect of creating |
| /// `compiler(stage, host)`, unlike `compiler` above which does have such |
| /// a side effect. The returned compiler here can only be used to compile |
| /// new artifacts, it can't be used to rely on the presence of a particular |
| /// sysroot. |
| /// |
| /// See `force_use_stage1` for documentation on what each argument is. |
| pub fn compiler_for( |
| &self, |
| stage: u32, |
| host: Interned<String>, |
| target: Interned<String>, |
| ) -> Compiler { |
| if self.build.force_use_stage1(Compiler { stage, host }, target) { |
| self.compiler(1, self.config.build) |
| } else { |
| self.compiler(stage, host) |
| } |
| } |
| |
| pub fn sysroot(&self, compiler: Compiler) -> Interned<PathBuf> { |
| self.ensure(compile::Sysroot { compiler }) |
| } |
| |
| /// Returns the libdir where the standard library and other artifacts are |
| /// found for a compiler's sysroot. |
| pub fn sysroot_libdir( |
| &self, |
| compiler: Compiler, |
| target: Interned<String>, |
| ) -> Interned<PathBuf> { |
| #[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)] |
| struct Libdir { |
| compiler: Compiler, |
| target: Interned<String>, |
| } |
| impl Step for Libdir { |
| type Output = Interned<PathBuf>; |
| |
| fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> { |
| run.never() |
| } |
| |
| fn run(self, builder: &Builder<'_>) -> Interned<PathBuf> { |
| let lib = builder.sysroot_libdir_relative(self.compiler); |
| let sysroot = builder |
| .sysroot(self.compiler) |
| .join(lib) |
| .join("rustlib") |
| .join(self.target) |
| .join("lib"); |
| let _ = fs::remove_dir_all(&sysroot); |
| t!(fs::create_dir_all(&sysroot)); |
| INTERNER.intern_path(sysroot) |
| } |
| } |
| self.ensure(Libdir { compiler, target }) |
| } |
| |
| pub fn sysroot_codegen_backends(&self, compiler: Compiler) -> PathBuf { |
| self.sysroot_libdir(compiler, compiler.host) |
| .with_file_name(self.config.rust_codegen_backends_dir.clone()) |
| } |
| |
| /// Returns the compiler's libdir where it stores the dynamic libraries that |
| /// it itself links against. |
| /// |
| /// For example this returns `<sysroot>/lib` on Unix and `<sysroot>/bin` on |
| /// Windows. |
| pub fn rustc_libdir(&self, compiler: Compiler) -> PathBuf { |
| if compiler.is_snapshot(self) { |
| self.rustc_snapshot_libdir() |
| } else { |
| match self.config.libdir_relative() { |
| Some(relative_libdir) if compiler.stage >= 1 |
| => self.sysroot(compiler).join(relative_libdir), |
| _ => self.sysroot(compiler).join(libdir(&compiler.host)) |
| } |
| } |
| } |
| |
| /// Returns the compiler's relative libdir where it stores the dynamic libraries that |
| /// it itself links against. |
| /// |
| /// For example this returns `lib` on Unix and `bin` on |
| /// Windows. |
| pub fn libdir_relative(&self, compiler: Compiler) -> &Path { |
| if compiler.is_snapshot(self) { |
| libdir(&self.config.build).as_ref() |
| } else { |
| match self.config.libdir_relative() { |
| Some(relative_libdir) if compiler.stage >= 1 |
| => relative_libdir, |
| _ => libdir(&compiler.host).as_ref() |
| } |
| } |
| } |
| |
| /// Returns the compiler's relative libdir where the standard library and other artifacts are |
| /// found for a compiler's sysroot. |
| /// |
| /// For example this returns `lib` on Unix and Windows. |
| pub fn sysroot_libdir_relative(&self, compiler: Compiler) -> &Path { |
| match self.config.libdir_relative() { |
| Some(relative_libdir) if compiler.stage >= 1 |
| => relative_libdir, |
| _ => Path::new("lib") |
| } |
| } |
| |
| /// Adds the compiler's directory of dynamic libraries to `cmd`'s dynamic |
| /// library lookup path. |
| pub fn add_rustc_lib_path(&self, compiler: Compiler, cmd: &mut Cargo) { |
| // Windows doesn't need dylib path munging because the dlls for the |
| // compiler live next to the compiler and the system will find them |
| // automatically. |
| if cfg!(windows) { |
| return; |
| } |
| |
| add_lib_path(vec![self.rustc_libdir(compiler)], &mut cmd.command); |
| } |
| |
| /// Gets a path to the compiler specified. |
| pub fn rustc(&self, compiler: Compiler) -> PathBuf { |
| if compiler.is_snapshot(self) { |
| self.initial_rustc.clone() |
| } else { |
| self.sysroot(compiler) |
| .join("bin") |
| .join(exe("rustc", &compiler.host)) |
| } |
| } |
| |
| /// Gets the paths to all of the compiler's codegen backends. |
| fn codegen_backends(&self, compiler: Compiler) -> impl Iterator<Item = PathBuf> { |
| fs::read_dir(self.sysroot_codegen_backends(compiler)) |
| .into_iter() |
| .flatten() |
| .filter_map(Result::ok) |
| .map(|entry| entry.path()) |
| } |
| |
| pub fn rustdoc(&self, compiler: Compiler) -> PathBuf { |
| self.ensure(tool::Rustdoc { compiler }) |
| } |
| |
| pub fn rustdoc_cmd(&self, compiler: Compiler) -> Command { |
| let mut cmd = Command::new(&self.out.join("bootstrap/debug/rustdoc")); |
| cmd.env("RUSTC_STAGE", compiler.stage.to_string()) |
| .env("RUSTC_SYSROOT", self.sysroot(compiler)) |
| // Note that this is *not* the sysroot_libdir because rustdoc must be linked |
| // equivalently to rustc. |
| .env("RUSTDOC_LIBDIR", self.rustc_libdir(compiler)) |
| .env("CFG_RELEASE_CHANNEL", &self.config.channel) |
| .env("RUSTDOC_REAL", self.rustdoc(compiler)) |
| .env("RUSTDOC_CRATE_VERSION", self.rust_version()) |
| .env("RUSTC_BOOTSTRAP", "1"); |
| |
| // Remove make-related flags that can cause jobserver problems. |
| cmd.env_remove("MAKEFLAGS"); |
| cmd.env_remove("MFLAGS"); |
| |
| if let Some(linker) = self.linker(compiler.host) { |
| cmd.env("RUSTC_TARGET_LINKER", linker); |
| } |
| cmd |
| } |
| |
| /// Prepares an invocation of `cargo` to be run. |
| /// |
| /// This will create a `Command` that represents a pending execution of |
| /// Cargo. This cargo will be configured to use `compiler` as the actual |
| /// rustc compiler, its output will be scoped by `mode`'s output directory, |
| /// it will pass the `--target` flag for the specified `target`, and will be |
| /// executing the Cargo command `cmd`. |
| pub fn cargo( |
| &self, |
| compiler: Compiler, |
| mode: Mode, |
| target: Interned<String>, |
| cmd: &str, |
| ) -> Cargo { |
| let mut cargo = Command::new(&self.initial_cargo); |
| let out_dir = self.stage_out(compiler, mode); |
| |
| // Codegen backends are not yet tracked by -Zbinary-dep-depinfo, |
| // so we need to explicitly clear out if they've been updated. |
| for backend in self.codegen_backends(compiler) { |
| self.clear_if_dirty(&out_dir, &backend); |
| } |
| |
| if cmd == "doc" || cmd == "rustdoc" { |
| let my_out = match mode { |
| // This is the intended out directory for compiler documentation. |
| Mode::Rustc | Mode::ToolRustc | Mode::Codegen => self.compiler_doc_out(target), |
| _ => self.crate_doc_out(target), |
| }; |
| let rustdoc = self.rustdoc(compiler); |
| self.clear_if_dirty(&my_out, &rustdoc); |
| } |
| |
| cargo |
| .env("CARGO_TARGET_DIR", out_dir) |
| .arg(cmd) |
| .arg("-Zconfig-profile"); |
| |
| let profile_var = |name: &str| { |
| let profile = if self.config.rust_optimize { |
| "RELEASE" |
| } else { |
| "DEV" |
| }; |
| format!("CARGO_PROFILE_{}_{}", profile, name) |
| }; |
| |
| // See comment in librustc_llvm/build.rs for why this is necessary, largely llvm-config |
| // needs to not accidentally link to libLLVM in stage0/lib. |
| cargo.env("REAL_LIBRARY_PATH_VAR", &util::dylib_path_var()); |
| if let Some(e) = env::var_os(util::dylib_path_var()) { |
| cargo.env("REAL_LIBRARY_PATH", e); |
| } |
| |
| if cmd != "install" { |
| cargo.arg("--target") |
| .arg(target); |
| } else { |
| assert_eq!(target, compiler.host); |
| } |
| |
| // Set a flag for `check`/`clippy`/`fix`, so that certain build |
| // scripts can do less work (e.g. not building/requiring LLVM). |
| if cmd == "check" || cmd == "clippy" || cmd == "fix" { |
| cargo.env("RUST_CHECK", "1"); |
| } |
| |
| let stage; |
| if compiler.stage == 0 && self.local_rebuild { |
| // Assume the local-rebuild rustc already has stage1 features. |
| stage = 1; |
| } else { |
| stage = compiler.stage; |
| } |
| |
| let mut rustflags = Rustflags::new(&target); |
| if stage != 0 { |
| if let Ok(s) = env::var("CARGOFLAGS_NOT_BOOTSTRAP") { |
| cargo.args(s.split_whitespace()); |
| } |
| rustflags.env("RUSTFLAGS_NOT_BOOTSTRAP"); |
| } else { |
| if let Ok(s) = env::var("CARGOFLAGS_BOOTSTRAP") { |
| cargo.args(s.split_whitespace()); |
| } |
| rustflags.env("RUSTFLAGS_BOOTSTRAP"); |
| rustflags.arg("--cfg=bootstrap"); |
| } |
| |
| if let Ok(s) = env::var("CARGOFLAGS") { |
| cargo.args(s.split_whitespace()); |
| } |
| |
| match mode { |
| Mode::Std | Mode::ToolBootstrap | Mode::ToolStd => {}, |
| Mode::Rustc | Mode::Codegen | Mode::ToolRustc => { |
| // Build proc macros both for the host and the target |
| if target != compiler.host && cmd != "check" { |
| cargo.arg("-Zdual-proc-macros"); |
| rustflags.arg("-Zdual-proc-macros"); |
| } |
| }, |
| } |
| |
| // This tells Cargo (and in turn, rustc) to output more complete |
| // dependency information. Most importantly for rustbuild, this |
| // includes sysroot artifacts, like libstd, which means that we don't |
| // need to track those in rustbuild (an error prone process!). This |
| // feature is currently unstable as there may be some bugs and such, but |
| // it represents a big improvement in rustbuild's reliability on |
| // rebuilds, so we're using it here. |
| // |
| // For some additional context, see #63470 (the PR originally adding |
| // this), as well as #63012 which is the tracking issue for this |
| // feature on the rustc side. |
| cargo.arg("-Zbinary-dep-depinfo"); |
| |
| cargo.arg("-j").arg(self.jobs().to_string()); |
| // Remove make-related flags to ensure Cargo can correctly set things up |
| cargo.env_remove("MAKEFLAGS"); |
| cargo.env_remove("MFLAGS"); |
| |
| // FIXME: Temporary fix for https://github.com/rust-lang/cargo/issues/3005 |
| // Force cargo to output binaries with disambiguating hashes in the name |
| let mut metadata = if compiler.stage == 0 { |
| // Treat stage0 like a special channel, whether it's a normal prior- |
| // release rustc or a local rebuild with the same version, so we |
| // never mix these libraries by accident. |
| "bootstrap".to_string() |
| } else { |
| self.config.channel.to_string() |
| }; |
| // We want to make sure that none of the dependencies between |
| // std/test/rustc unify with one another. This is done for weird linkage |
| // reasons but the gist of the problem is that if librustc, libtest, and |
| // libstd all depend on libc from crates.io (which they actually do) we |
| // want to make sure they all get distinct versions. Things get really |
| // weird if we try to unify all these dependencies right now, namely |
| // around how many times the library is linked in dynamic libraries and |
| // such. If rustc were a static executable or if we didn't ship dylibs |
| // this wouldn't be a problem, but we do, so it is. This is in general |
| // just here to make sure things build right. If you can remove this and |
| // things still build right, please do! |
| match mode { |
| Mode::Std => metadata.push_str("std"), |
| // When we're building rustc tools, they're built with a search path |
| // that contains things built during the rustc build. For example, |
| // bitflags is built during the rustc build, and is a dependency of |
| // rustdoc as well. We're building rustdoc in a different target |
| // directory, though, which means that Cargo will rebuild the |
| // dependency. When we go on to build rustdoc, we'll look for |
| // bitflags, and find two different copies: one built during the |
| // rustc step and one that we just built. This isn't always a |
| // problem, somehow -- not really clear why -- but we know that this |
| // fixes things. |
| Mode::ToolRustc => metadata.push_str("tool-rustc"), |
| _ => {} |
| } |
| cargo.env("__CARGO_DEFAULT_LIB_METADATA", &metadata); |
| |
| if cmd == "clippy" { |
| rustflags.arg("-Zforce-unstable-if-unmarked"); |
| } |
| |
| rustflags.arg("-Zexternal-macro-backtrace"); |
| |
| let want_rustdoc = self.doc_tests != DocTests::No; |
| |
| // We synthetically interpret a stage0 compiler used to build tools as a |
| // "raw" compiler in that it's the exact snapshot we download. Normally |
| // the stage0 build means it uses libraries build by the stage0 |
| // compiler, but for tools we just use the precompiled libraries that |
| // we've downloaded |
| let use_snapshot = mode == Mode::ToolBootstrap; |
| assert!(!use_snapshot || stage == 0 || self.local_rebuild); |
| |
| let maybe_sysroot = self.sysroot(compiler); |
| let sysroot = if use_snapshot { |
| self.rustc_snapshot_sysroot() |
| } else { |
| &maybe_sysroot |
| }; |
| let libdir = self.rustc_libdir(compiler); |
| |
| // Customize the compiler we're running. Specify the compiler to cargo |
| // as our shim and then pass it some various options used to configure |
| // how the actual compiler itself is called. |
| // |
| // These variables are primarily all read by |
| // src/bootstrap/bin/{rustc.rs,rustdoc.rs} |
| cargo |
| .env("RUSTBUILD_NATIVE_DIR", self.native_dir(target)) |
| .env("RUSTC", self.out.join("bootstrap/debug/rustc")) |
| .env("RUSTC_REAL", self.rustc(compiler)) |
| .env("RUSTC_STAGE", stage.to_string()) |
| .env( |
| "RUSTC_DEBUG_ASSERTIONS", |
| self.config.rust_debug_assertions.to_string(), |
| ) |
| .env("RUSTC_SYSROOT", &sysroot) |
| .env("RUSTC_LIBDIR", &libdir) |
| .env("RUSTDOC", self.out.join("bootstrap/debug/rustdoc")) |
| .env( |
| "RUSTDOC_REAL", |
| if cmd == "doc" || cmd == "rustdoc" || (cmd == "test" && want_rustdoc) { |
| self.rustdoc(compiler) |
| } else { |
| PathBuf::from("/path/to/nowhere/rustdoc/not/required") |
| }, |
| ) |
| .env("RUSTC_ERROR_METADATA_DST", self.extended_error_dir()) |
| .env("RUSTC_BREAK_ON_ICE", "1"); |
| |
| // Dealing with rpath here is a little special, so let's go into some |
| // detail. First off, `-rpath` is a linker option on Unix platforms |
| // which adds to the runtime dynamic loader path when looking for |
| // dynamic libraries. We use this by default on Unix platforms to ensure |
| // that our nightlies behave the same on Windows, that is they work out |
| // of the box. This can be disabled, of course, but basically that's why |
| // we're gated on RUSTC_RPATH here. |
| // |
| // Ok, so the astute might be wondering "why isn't `-C rpath` used |
| // here?" and that is indeed a good question to task. This codegen |
| // option is the compiler's current interface to generating an rpath. |
| // Unfortunately it doesn't quite suffice for us. The flag currently |
| // takes no value as an argument, so the compiler calculates what it |
| // should pass to the linker as `-rpath`. This unfortunately is based on |
| // the **compile time** directory structure which when building with |
| // Cargo will be very different than the runtime directory structure. |
| // |
| // All that's a really long winded way of saying that if we use |
| // `-Crpath` then the executables generated have the wrong rpath of |
| // something like `$ORIGIN/deps` when in fact the way we distribute |
| // rustc requires the rpath to be `$ORIGIN/../lib`. |
| // |
| // So, all in all, to set up the correct rpath we pass the linker |
| // argument manually via `-C link-args=-Wl,-rpath,...`. Plus isn't it |
| // fun to pass a flag to a tool to pass a flag to pass a flag to a tool |
| // to change a flag in a binary? |
| if self.config.rust_rpath { |
| let rpath = if target.contains("apple") { |
| |
| // Note that we need to take one extra step on macOS to also pass |
| // `-Wl,-instal_name,@rpath/...` to get things to work right. To |
| // do that we pass a weird flag to the compiler to get it to do |
| // so. Note that this is definitely a hack, and we should likely |
| // flesh out rpath support more fully in the future. |
| rustflags.arg("-Zosx-rpath-install-name"); |
| Some("-Wl,-rpath,@loader_path/../lib") |
| } else if !target.contains("windows") && |
| !target.contains("wasm32") && |
| !target.contains("emscripten") && |
| !target.contains("fuchsia") { |
| Some("-Wl,-rpath,$ORIGIN/../lib") |
| } else { |
| None |
| }; |
| if let Some(rpath) = rpath { |
| rustflags.arg(&format!("-Clink-args={}", rpath)); |
| } |
| } |
| |
| if let Some(host_linker) = self.linker(compiler.host) { |
| cargo.env("RUSTC_HOST_LINKER", host_linker); |
| } |
| if let Some(target_linker) = self.linker(target) { |
| let target = crate::envify(&target); |
| cargo.env(&format!("CARGO_TARGET_{}_LINKER", target), target_linker); |
| } |
| if !(["build", "check", "clippy", "fix", "rustc"].contains(&cmd)) && want_rustdoc { |
| cargo.env("RUSTDOC_LIBDIR", self.rustc_libdir(compiler)); |
| } |
| |
| let debuginfo_level = match mode { |
| Mode::Rustc | Mode::Codegen => self.config.rust_debuginfo_level_rustc, |
| Mode::Std => self.config.rust_debuginfo_level_std, |
| Mode::ToolBootstrap | Mode::ToolStd | |
| Mode::ToolRustc => self.config.rust_debuginfo_level_tools, |
| }; |
| cargo.env(profile_var("DEBUG"), debuginfo_level.to_string()); |
| |
| if !mode.is_tool() { |
| cargo.env("RUSTC_FORCE_UNSTABLE", "1"); |
| } |
| |
| if let Some(x) = self.crt_static(target) { |
| if x { |
| rustflags.arg("-Ctarget-feature=+crt-static"); |
| } else { |
| rustflags.arg("-Ctarget-feature=-crt-static"); |
| } |
| } |
| |
| if let Some(x) = self.crt_static(compiler.host) { |
| cargo.env("RUSTC_HOST_CRT_STATIC", x.to_string()); |
| } |
| |
| if let Some(map) = self.build.debuginfo_map(GitRepo::Rustc) { |
| cargo.env("RUSTC_DEBUGINFO_MAP", map); |
| } |
| |
| // Enable usage of unstable features |
| cargo.env("RUSTC_BOOTSTRAP", "1"); |
| self.add_rust_test_threads(&mut cargo); |
| |
| // Almost all of the crates that we compile as part of the bootstrap may |
| // have a build script, including the standard library. To compile a |
| // build script, however, it itself needs a standard library! This |
| // introduces a bit of a pickle when we're compiling the standard |
| // library itself. |
| // |
| // To work around this we actually end up using the snapshot compiler |
| // (stage0) for compiling build scripts of the standard library itself. |
| // The stage0 compiler is guaranteed to have a libstd available for use. |
| // |
| // For other crates, however, we know that we've already got a standard |
| // library up and running, so we can use the normal compiler to compile |
| // build scripts in that situation. |
| if mode == Mode::Std { |
| cargo |
| .env("RUSTC_SNAPSHOT", &self.initial_rustc) |
| .env("RUSTC_SNAPSHOT_LIBDIR", self.rustc_snapshot_libdir()); |
| } else { |
| cargo |
| .env("RUSTC_SNAPSHOT", self.rustc(compiler)) |
| .env("RUSTC_SNAPSHOT_LIBDIR", self.rustc_libdir(compiler)); |
| } |
| |
| if self.config.incremental { |
| cargo.env("CARGO_INCREMENTAL", "1"); |
| } else { |
| // Don't rely on any default setting for incr. comp. in Cargo |
| cargo.env("CARGO_INCREMENTAL", "0"); |
| } |
| |
| if let Some(ref on_fail) = self.config.on_fail { |
| cargo.env("RUSTC_ON_FAIL", on_fail); |
| } |
| |
| if self.config.print_step_timings { |
| cargo.env("RUSTC_PRINT_STEP_TIMINGS", "1"); |
| } |
| |
| if self.config.backtrace_on_ice { |
| cargo.env("RUSTC_BACKTRACE_ON_ICE", "1"); |
| } |
| |
| cargo.env("RUSTC_VERBOSE", self.verbosity.to_string()); |
| |
| if !mode.is_tool() { |
| // When extending this list, add the new lints to the RUSTFLAGS of the |
| // build_bootstrap function of src/bootstrap/bootstrap.py as well as |
| // some code doesn't go through this `rustc` wrapper. |
| rustflags.arg("-Wrust_2018_idioms"); |
| rustflags.arg("-Wunused_lifetimes"); |
| |
| if self.config.deny_warnings { |
| rustflags.arg("-Dwarnings"); |
| } |
| } |
| |
| if let Mode::Rustc | Mode::Codegen = mode { |
| rustflags.arg("-Zunstable-options"); |
| rustflags.arg("-Wrustc::internal"); |
| } |
| |
| // Throughout the build Cargo can execute a number of build scripts |
| // compiling C/C++ code and we need to pass compilers, archivers, flags, etc |
| // obtained previously to those build scripts. |
| // Build scripts use either the `cc` crate or `configure/make` so we pass |
| // the options through environment variables that are fetched and understood by both. |
| // |
| // FIXME: the guard against msvc shouldn't need to be here |
| if target.contains("msvc") { |
| if let Some(ref cl) = self.config.llvm_clang_cl { |
| cargo.env("CC", cl).env("CXX", cl); |
| } |
| } else { |
| let ccache = self.config.ccache.as_ref(); |
| let ccacheify = |s: &Path| { |
| let ccache = match ccache { |
| Some(ref s) => s, |
| None => return s.display().to_string(), |
| }; |
| // FIXME: the cc-rs crate only recognizes the literal strings |
| // `ccache` and `sccache` when doing caching compilations, so we |
| // mirror that here. It should probably be fixed upstream to |
| // accept a new env var or otherwise work with custom ccache |
| // vars. |
| match &ccache[..] { |
| "ccache" | "sccache" => format!("{} {}", ccache, s.display()), |
| _ => s.display().to_string(), |
| } |
| }; |
| let cc = ccacheify(&self.cc(target)); |
| cargo.env(format!("CC_{}", target), &cc); |
| |
| let cflags = self.cflags(target, GitRepo::Rustc).join(" "); |
| cargo |
| .env(format!("CFLAGS_{}", target), cflags.clone()); |
| |
| if let Some(ar) = self.ar(target) { |
| let ranlib = format!("{} s", ar.display()); |
| cargo |
| .env(format!("AR_{}", target), ar) |
| .env(format!("RANLIB_{}", target), ranlib); |
| } |
| |
| if let Ok(cxx) = self.cxx(target) { |
| let cxx = ccacheify(&cxx); |
| cargo |
| .env(format!("CXX_{}", target), &cxx) |
| .env(format!("CXXFLAGS_{}", target), cflags); |
| } |
| } |
| |
| if mode == Mode::Std |
| && self.config.extended |
| && compiler.is_final_stage(self) |
| { |
| rustflags.arg("-Zsave-analysis"); |
| cargo.env("RUST_SAVE_ANALYSIS_CONFIG", |
| "{\"output_file\": null,\"full_docs\": false,\ |
| \"pub_only\": true,\"reachable_only\": false,\ |
| \"distro_crate\": true,\"signatures\": false,\"borrow_data\": false}"); |
| } |
| |
| // For `cargo doc` invocations, make rustdoc print the Rust version into the docs |
| cargo.env("RUSTDOC_CRATE_VERSION", self.rust_version()); |
| |
| // Environment variables *required* throughout the build |
| // |
| // FIXME: should update code to not require this env var |
| cargo.env("CFG_COMPILER_HOST_TRIPLE", target); |
| |
| // Set this for all builds to make sure doc builds also get it. |
| cargo.env("CFG_RELEASE_CHANNEL", &self.config.channel); |
| |
| // This one's a bit tricky. As of the time of this writing the compiler |
| // links to the `winapi` crate on crates.io. This crate provides raw |
| // bindings to Windows system functions, sort of like libc does for |
| // Unix. This crate also, however, provides "import libraries" for the |
| // MinGW targets. There's an import library per dll in the windows |
| // distribution which is what's linked to. These custom import libraries |
| // are used because the winapi crate can reference Windows functions not |
| // present in the MinGW import libraries. |
| // |
| // For example MinGW may ship libdbghelp.a, but it may not have |
| // references to all the functions in the dbghelp dll. Instead the |
| // custom import library for dbghelp in the winapi crates has all this |
| // information. |
| // |
| // Unfortunately for us though the import libraries are linked by |
| // default via `-ldylib=winapi_foo`. That is, they're linked with the |
| // `dylib` type with a `winapi_` prefix (so the winapi ones don't |
| // conflict with the system MinGW ones). This consequently means that |
| // the binaries we ship of things like rustc_codegen_llvm (aka the rustc_codegen_llvm |
| // DLL) when linked against *again*, for example with procedural macros |
| // or plugins, will trigger the propagation logic of `-ldylib`, passing |
| // `-lwinapi_foo` to the linker again. This isn't actually available in |
| // our distribution, however, so the link fails. |
| // |
| // To solve this problem we tell winapi to not use its bundled import |
| // libraries. This means that it will link to the system MinGW import |
| // libraries by default, and the `-ldylib=foo` directives will still get |
| // passed to the final linker, but they'll look like `-lfoo` which can |
| // be resolved because MinGW has the import library. The downside is we |
| // don't get newer functions from Windows, but we don't use any of them |
| // anyway. |
| if !mode.is_tool() { |
| cargo.env("WINAPI_NO_BUNDLED_LIBRARIES", "1"); |
| } |
| |
| for _ in 1..self.verbosity { |
| cargo.arg("-v"); |
| } |
| |
| match (mode, self.config.rust_codegen_units_std, self.config.rust_codegen_units) { |
| (Mode::Std, Some(n), _) | |
| (_, _, Some(n)) => { |
| cargo.env(profile_var("CODEGEN_UNITS"), n.to_string()); |
| } |
| _ => { |
| // Don't set anything |
| } |
| } |
| |
| if self.config.rust_optimize { |
| // FIXME: cargo bench/install do not accept `--release` |
| if cmd != "bench" && cmd != "install" { |
| cargo.arg("--release"); |
| } |
| } |
| |
| if self.config.locked_deps { |
| cargo.arg("--locked"); |
| } |
| if self.config.vendor || self.is_sudo { |
| cargo.arg("--frozen"); |
| } |
| |
| // Try to use a sysroot-relative bindir, in case it was configured absolutely. |
| cargo.env("RUSTC_INSTALL_BINDIR", self.config.bindir_relative()); |
| |
| self.ci_env.force_coloring_in_ci(&mut cargo); |
| |
| // When we build Rust dylibs they're all intended for intermediate |
| // usage, so make sure we pass the -Cprefer-dynamic flag instead of |
| // linking all deps statically into the dylib. |
| if let Mode::Std | Mode::Rustc | Mode::Codegen = mode { |
| rustflags.arg("-Cprefer-dynamic"); |
| } |
| |
| Cargo { |
| command: cargo, |
| rustflags, |
| } |
| } |
| |
| /// Ensure that a given step is built, returning its output. This will |
| /// cache the step, so it is safe (and good!) to call this as often as |
| /// needed to ensure that all dependencies are built. |
| pub fn ensure<S: Step>(&'a self, step: S) -> S::Output { |
| { |
| let mut stack = self.stack.borrow_mut(); |
| for stack_step in stack.iter() { |
| // should skip |
| if stack_step |
| .downcast_ref::<S>() |
| .map_or(true, |stack_step| *stack_step != step) |
| { |
| continue; |
| } |
| let mut out = String::new(); |
| out += &format!("\n\nCycle in build detected when adding {:?}\n", step); |
| for el in stack.iter().rev() { |
| out += &format!("\t{:?}\n", el); |
| } |
| panic!(out); |
| } |
| if let Some(out) = self.cache.get(&step) { |
| self.verbose(&format!("{}c {:?}", " ".repeat(stack.len()), step)); |
| |
| { |
| let mut graph = self.graph.borrow_mut(); |
| let parent = self.parent.get(); |
| let us = *self |
| .graph_nodes |
| .borrow_mut() |
| .entry(format!("{:?}", step)) |
| .or_insert_with(|| graph.add_node(format!("{:?}", step))); |
| if let Some(parent) = parent { |
| graph.add_edge(parent, us, false); |
| } |
| } |
| |
| return out; |
| } |
| self.verbose(&format!("{}> {:?}", " ".repeat(stack.len()), step)); |
| stack.push(Box::new(step.clone())); |
| } |
| |
| let prev_parent = self.parent.get(); |
| |
| { |
| let mut graph = self.graph.borrow_mut(); |
| let parent = self.parent.get(); |
| let us = *self |
| .graph_nodes |
| .borrow_mut() |
| .entry(format!("{:?}", step)) |
| .or_insert_with(|| graph.add_node(format!("{:?}", step))); |
| self.parent.set(Some(us)); |
| if let Some(parent) = parent { |
| graph.add_edge(parent, us, true); |
| } |
| } |
| |
| let (out, dur) = { |
| let start = Instant::now(); |
| let zero = Duration::new(0, 0); |
| let parent = self.time_spent_on_dependencies.replace(zero); |
| let out = step.clone().run(self); |
| let dur = start.elapsed(); |
| let deps = self.time_spent_on_dependencies.replace(parent + dur); |
| (out, dur - deps) |
| }; |
| |
| self.parent.set(prev_parent); |
| |
| if self.config.print_step_timings && dur > Duration::from_millis(100) { |
| println!( |
| "[TIMING] {:?} -- {}.{:03}", |
| step, |
| dur.as_secs(), |
| dur.subsec_nanos() / 1_000_000 |
| ); |
| } |
| |
| { |
| let mut stack = self.stack.borrow_mut(); |
| let cur_step = stack.pop().expect("step stack empty"); |
| assert_eq!(cur_step.downcast_ref(), Some(&step)); |
| } |
| self.verbose(&format!( |
| "{}< {:?}", |
| " ".repeat(self.stack.borrow().len()), |
| step |
| )); |
| self.cache.put(step, out.clone()); |
| out |
| } |
| } |
| |
| #[cfg(test)] |
| mod tests; |
| |
| #[derive(Debug)] |
| struct Rustflags(String); |
| |
| impl Rustflags { |
| fn new(target: &str) -> Rustflags { |
| let mut ret = Rustflags(String::new()); |
| |
| // Inherit `RUSTFLAGS` by default ... |
| ret.env("RUSTFLAGS"); |
| |
| // ... and also handle target-specific env RUSTFLAGS if they're |
| // configured. |
| let target_specific = format!("CARGO_TARGET_{}_RUSTFLAGS", crate::envify(target)); |
| ret.env(&target_specific); |
| |
| ret |
| } |
| |
| fn env(&mut self, env: &str) { |
| if let Ok(s) = env::var(env) { |
| for part in s.split_whitespace() { |
| self.arg(part); |
| } |
| } |
| } |
| |
| fn arg(&mut self, arg: &str) -> &mut Self { |
| assert_eq!(arg.split_whitespace().count(), 1); |
| if self.0.len() > 0 { |
| self.0.push_str(" "); |
| } |
| self.0.push_str(arg); |
| self |
| } |
| } |
| |
| #[derive(Debug)] |
| pub struct Cargo { |
| command: Command, |
| rustflags: Rustflags, |
| } |
| |
| impl Cargo { |
| pub fn rustflag(&mut self, arg: &str) -> &mut Cargo { |
| self.rustflags.arg(arg); |
| self |
| } |
| |
| pub fn arg(&mut self, arg: impl AsRef<OsStr>) -> &mut Cargo { |
| self.command.arg(arg.as_ref()); |
| self |
| } |
| |
| pub fn args<I, S>(&mut self, args: I) -> &mut Cargo |
| where I: IntoIterator<Item=S>, S: AsRef<OsStr> |
| { |
| for arg in args { |
| self.arg(arg.as_ref()); |
| } |
| self |
| } |
| |
| pub fn env(&mut self, key: impl AsRef<OsStr>, value: impl AsRef<OsStr>) -> &mut Cargo { |
| self.command.env(key.as_ref(), value.as_ref()); |
| self |
| } |
| } |
| |
| impl From<Cargo> for Command { |
| fn from(mut cargo: Cargo) -> Command { |
| cargo.command.env("RUSTFLAGS", &cargo.rustflags.0); |
| cargo.command |
| } |
| } |
