1772 lines
68 KiB
Rust
1772 lines
68 KiB
Rust
use std::any::Any;
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use std::cell::{Cell, RefCell};
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use std::collections::BTreeSet;
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use std::env;
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use std::ffi::OsStr;
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use std::fmt::Debug;
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use std::fs;
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use std::hash::Hash;
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use std::ops::Deref;
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use std::path::{Path, PathBuf};
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use std::process::Command;
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use std::time::{Duration, Instant};
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use build_helper::{output, t};
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use crate::cache::{Cache, Interned, INTERNER};
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use crate::check;
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use crate::compile;
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use crate::config::TargetSelection;
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use crate::dist;
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use crate::doc;
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use crate::flags::{Color, Subcommand};
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use crate::install;
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use crate::native;
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use crate::run;
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use crate::test;
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use crate::tool::{self, SourceType};
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use crate::util::{self, add_dylib_path, add_link_lib_path, exe, libdir};
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use crate::{Build, DocTests, GitRepo, Mode};
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pub use crate::Compiler;
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// FIXME: replace with std::lazy after it gets stabilized and reaches beta
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use once_cell::sync::Lazy;
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pub struct Builder<'a> {
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pub build: &'a Build,
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pub top_stage: u32,
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pub kind: Kind,
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cache: Cache,
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stack: RefCell<Vec<Box<dyn Any>>>,
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time_spent_on_dependencies: Cell<Duration>,
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pub paths: Vec<PathBuf>,
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}
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impl<'a> Deref for Builder<'a> {
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type Target = Build;
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fn deref(&self) -> &Self::Target {
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self.build
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}
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}
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pub trait Step: 'static + Clone + Debug + PartialEq + Eq + Hash {
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/// `PathBuf` when directories are created or to return a `Compiler` once
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/// it's been assembled.
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type Output: Clone;
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/// Whether this step is run by default as part of its respective phase.
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/// `true` here can still be overwritten by `should_run` calling `default_condition`.
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const DEFAULT: bool = false;
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/// If true, then this rule should be skipped if --target was specified, but --host was not
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const ONLY_HOSTS: bool = false;
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/// Primary function to execute this rule. Can call `builder.ensure()`
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/// with other steps to run those.
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fn run(self, builder: &Builder<'_>) -> Self::Output;
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/// When bootstrap is passed a set of paths, this controls whether this rule
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/// will execute. However, it does not get called in a "default" context
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/// when we are not passed any paths; in that case, `make_run` is called
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/// directly.
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fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_>;
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/// Builds up a "root" rule, either as a default rule or from a path passed
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/// to us.
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///
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/// When path is `None`, we are executing in a context where no paths were
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/// passed. When `./x.py build` is run, for example, this rule could get
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/// called if it is in the correct list below with a path of `None`.
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fn make_run(_run: RunConfig<'_>) {
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// It is reasonable to not have an implementation of make_run for rules
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// who do not want to get called from the root context. This means that
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// they are likely dependencies (e.g., sysroot creation) or similar, and
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// as such calling them from ./x.py isn't logical.
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unimplemented!()
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}
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}
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pub struct RunConfig<'a> {
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pub builder: &'a Builder<'a>,
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pub target: TargetSelection,
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pub path: PathBuf,
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}
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impl RunConfig<'_> {
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pub fn build_triple(&self) -> TargetSelection {
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self.builder.build.build
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}
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}
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struct StepDescription {
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default: bool,
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only_hosts: bool,
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should_run: fn(ShouldRun<'_>) -> ShouldRun<'_>,
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make_run: fn(RunConfig<'_>),
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name: &'static str,
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}
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/// Collection of paths used to match a task rule.
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#[derive(Debug, Clone, PartialOrd, Ord, PartialEq, Eq)]
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pub enum PathSet {
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/// A collection of individual paths.
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///
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/// These are generally matched as a path suffix. For example, a
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/// command-line value of `libstd` will match if `src/libstd` is in the
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/// set.
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Set(BTreeSet<PathBuf>),
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/// A "suite" of paths.
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///
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/// These can match as a path suffix (like `Set`), or as a prefix. For
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/// example, a command-line value of `src/test/ui/abi/variadic-ffi.rs`
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/// will match `src/test/ui`. A command-line value of `ui` would also
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/// match `src/test/ui`.
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Suite(PathBuf),
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}
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impl PathSet {
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fn empty() -> PathSet {
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PathSet::Set(BTreeSet::new())
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}
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fn one<P: Into<PathBuf>>(path: P) -> PathSet {
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let mut set = BTreeSet::new();
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set.insert(path.into());
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PathSet::Set(set)
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}
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fn has(&self, needle: &Path) -> bool {
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match self {
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PathSet::Set(set) => set.iter().any(|p| p.ends_with(needle)),
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PathSet::Suite(suite) => suite.ends_with(needle),
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}
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}
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fn path(&self, builder: &Builder<'_>) -> PathBuf {
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match self {
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PathSet::Set(set) => set.iter().next().unwrap_or(&builder.build.src).to_path_buf(),
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PathSet::Suite(path) => PathBuf::from(path),
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}
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}
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}
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impl StepDescription {
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fn from<S: Step>() -> StepDescription {
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StepDescription {
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default: S::DEFAULT,
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only_hosts: S::ONLY_HOSTS,
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should_run: S::should_run,
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make_run: S::make_run,
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name: std::any::type_name::<S>(),
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}
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}
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fn maybe_run(&self, builder: &Builder<'_>, pathset: &PathSet) {
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if self.is_excluded(builder, pathset) {
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return;
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}
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// Determine the targets participating in this rule.
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let targets = if self.only_hosts { &builder.hosts } else { &builder.targets };
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for target in targets {
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let run = RunConfig { builder, path: pathset.path(builder), target: *target };
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(self.make_run)(run);
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}
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}
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fn is_excluded(&self, builder: &Builder<'_>, pathset: &PathSet) -> bool {
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if builder.config.exclude.iter().any(|e| pathset.has(e)) {
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eprintln!("Skipping {:?} because it is excluded", pathset);
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return true;
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}
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if !builder.config.exclude.is_empty() {
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eprintln!(
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"{:?} not skipped for {:?} -- not in {:?}",
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pathset, self.name, builder.config.exclude
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);
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}
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false
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}
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fn run(v: &[StepDescription], builder: &Builder<'_>, paths: &[PathBuf]) {
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let should_runs =
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v.iter().map(|desc| (desc.should_run)(ShouldRun::new(builder))).collect::<Vec<_>>();
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// sanity checks on rules
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for (desc, should_run) in v.iter().zip(&should_runs) {
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assert!(
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!should_run.paths.is_empty(),
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"{:?} should have at least one pathset",
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desc.name
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);
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}
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if paths.is_empty() || builder.config.include_default_paths {
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for (desc, should_run) in v.iter().zip(&should_runs) {
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if desc.default && should_run.is_really_default() {
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for pathset in &should_run.paths {
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desc.maybe_run(builder, pathset);
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}
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}
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}
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}
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for path in paths {
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// strip CurDir prefix if present
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let path = match path.strip_prefix(".") {
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Ok(p) => p,
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Err(_) => path,
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};
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let mut attempted_run = false;
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for (desc, should_run) in v.iter().zip(&should_runs) {
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if let Some(suite) = should_run.is_suite_path(path) {
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attempted_run = true;
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desc.maybe_run(builder, suite);
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} else if let Some(pathset) = should_run.pathset_for_path(path) {
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attempted_run = true;
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desc.maybe_run(builder, pathset);
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}
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}
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if !attempted_run {
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panic!("error: no rules matched {}", path.display());
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}
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}
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}
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}
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enum ReallyDefault<'a> {
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Bool(bool),
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Lazy(Lazy<bool, Box<dyn Fn() -> bool + 'a>>),
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}
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pub struct ShouldRun<'a> {
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pub builder: &'a Builder<'a>,
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// use a BTreeSet to maintain sort order
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paths: BTreeSet<PathSet>,
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// If this is a default rule, this is an additional constraint placed on
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// its run. Generally something like compiler docs being enabled.
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is_really_default: ReallyDefault<'a>,
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}
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impl<'a> ShouldRun<'a> {
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fn new(builder: &'a Builder<'_>) -> ShouldRun<'a> {
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ShouldRun {
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builder,
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paths: BTreeSet::new(),
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is_really_default: ReallyDefault::Bool(true), // by default no additional conditions
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}
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}
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pub fn default_condition(mut self, cond: bool) -> Self {
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self.is_really_default = ReallyDefault::Bool(cond);
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self
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}
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pub fn lazy_default_condition(mut self, lazy_cond: Box<dyn Fn() -> bool + 'a>) -> Self {
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self.is_really_default = ReallyDefault::Lazy(Lazy::new(lazy_cond));
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self
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}
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pub fn is_really_default(&self) -> bool {
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match &self.is_really_default {
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ReallyDefault::Bool(val) => *val,
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ReallyDefault::Lazy(lazy) => *lazy.deref(),
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}
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}
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/// Indicates it should run if the command-line selects the given crate or
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/// any of its (local) dependencies.
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///
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/// Compared to `krate`, this treats the dependencies as aliases for the
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/// same job. Generally it is preferred to use `krate`, and treat each
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/// individual path separately. For example `./x.py test src/liballoc`
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/// (which uses `krate`) will test just `liballoc`. However, `./x.py check
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/// src/liballoc` (which uses `all_krates`) will check all of `libtest`.
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/// `all_krates` should probably be removed at some point.
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pub fn all_krates(mut self, name: &str) -> Self {
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let mut set = BTreeSet::new();
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for krate in self.builder.in_tree_crates(name, None) {
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let path = krate.local_path(self.builder);
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set.insert(path);
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}
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self.paths.insert(PathSet::Set(set));
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self
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}
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/// Indicates it should run if the command-line selects the given crate or
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/// any of its (local) dependencies.
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///
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/// `make_run` will be called separately for each matching command-line path.
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pub fn krate(mut self, name: &str) -> Self {
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for krate in self.builder.in_tree_crates(name, None) {
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let path = krate.local_path(self.builder);
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self.paths.insert(PathSet::one(path));
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}
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self
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}
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// single, non-aliased path
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pub fn path(self, path: &str) -> Self {
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self.paths(&[path])
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}
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// multiple aliases for the same job
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pub fn paths(mut self, paths: &[&str]) -> Self {
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self.paths.insert(PathSet::Set(paths.iter().map(PathBuf::from).collect()));
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self
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}
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pub fn is_suite_path(&self, path: &Path) -> Option<&PathSet> {
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self.paths.iter().find(|pathset| match pathset {
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PathSet::Suite(p) => path.starts_with(p),
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PathSet::Set(_) => false,
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})
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}
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pub fn suite_path(mut self, suite: &str) -> Self {
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self.paths.insert(PathSet::Suite(PathBuf::from(suite)));
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self
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}
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// allows being more explicit about why should_run in Step returns the value passed to it
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pub fn never(mut self) -> ShouldRun<'a> {
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self.paths.insert(PathSet::empty());
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self
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}
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fn pathset_for_path(&self, path: &Path) -> Option<&PathSet> {
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self.paths.iter().find(|pathset| pathset.has(path))
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}
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}
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#[derive(Copy, Clone, PartialEq, Eq, Debug)]
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pub enum Kind {
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Build,
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Check,
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Clippy,
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Fix,
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Test,
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Bench,
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Dist,
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Doc,
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Install,
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Run,
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}
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impl<'a> Builder<'a> {
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fn get_step_descriptions(kind: Kind) -> Vec<StepDescription> {
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macro_rules! describe {
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($($rule:ty),+ $(,)?) => {{
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vec![$(StepDescription::from::<$rule>()),+]
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}};
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}
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match kind {
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Kind::Build => describe!(
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compile::Std,
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compile::Assemble,
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compile::CodegenBackend,
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compile::StartupObjects,
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tool::BuildManifest,
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tool::Rustbook,
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tool::ErrorIndex,
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tool::UnstableBookGen,
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tool::Tidy,
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tool::Linkchecker,
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tool::CargoTest,
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tool::Compiletest,
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tool::RemoteTestServer,
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tool::RemoteTestClient,
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tool::RustInstaller,
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tool::Cargo,
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tool::Rls,
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tool::RustAnalyzer,
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tool::RustDemangler,
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tool::Rustdoc,
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tool::Clippy,
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tool::CargoClippy,
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native::Llvm,
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native::Sanitizers,
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tool::Rustfmt,
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tool::Miri,
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tool::CargoMiri,
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native::Lld,
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native::CrtBeginEnd
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),
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Kind::Check | Kind::Clippy { .. } | Kind::Fix => describe!(
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check::Std,
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check::Rustc,
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check::Rustdoc,
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check::CodegenBackend,
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check::Clippy,
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|
check::Miri,
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check::Rls,
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check::Rustfmt,
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check::Bootstrap
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),
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Kind::Test => describe!(
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crate::toolstate::ToolStateCheck,
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test::ExpandYamlAnchors,
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|
test::Tidy,
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|
test::Ui,
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|
test::RunPassValgrind,
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|
test::MirOpt,
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|
test::Codegen,
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|
test::CodegenUnits,
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|
test::Assembly,
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|
test::Incremental,
|
|
test::Debuginfo,
|
|
test::UiFullDeps,
|
|
test::Rustdoc,
|
|
test::Pretty,
|
|
test::Crate,
|
|
test::CrateLibrustc,
|
|
test::CrateRustdoc,
|
|
test::CrateRustdocJsonTypes,
|
|
test::Linkcheck,
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|
test::TierCheck,
|
|
test::Cargotest,
|
|
test::Cargo,
|
|
test::Rls,
|
|
test::ErrorIndex,
|
|
test::Distcheck,
|
|
test::RunMakeFullDeps,
|
|
test::Nomicon,
|
|
test::Reference,
|
|
test::RustdocBook,
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|
test::RustByExample,
|
|
test::TheBook,
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|
test::UnstableBook,
|
|
test::RustcBook,
|
|
test::LintDocs,
|
|
test::RustcGuide,
|
|
test::EmbeddedBook,
|
|
test::EditionGuide,
|
|
test::Rustfmt,
|
|
test::Miri,
|
|
test::Clippy,
|
|
test::RustDemangler,
|
|
test::CompiletestTest,
|
|
test::RustdocJSStd,
|
|
test::RustdocJSNotStd,
|
|
test::RustdocGUI,
|
|
test::RustdocTheme,
|
|
test::RustdocUi,
|
|
test::RustdocJson,
|
|
test::HtmlCheck,
|
|
// 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,
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|
),
|
|
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::Rustfmt,
|
|
doc::ErrorIndex,
|
|
doc::Nomicon,
|
|
doc::Reference,
|
|
doc::RustdocBook,
|
|
doc::RustByExample,
|
|
doc::RustcBook,
|
|
doc::CargoBook,
|
|
doc::Clippy,
|
|
doc::EmbeddedBook,
|
|
doc::EditionGuide,
|
|
),
|
|
Kind::Dist => describe!(
|
|
dist::Docs,
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|
dist::RustcDocs,
|
|
dist::Mingw,
|
|
dist::Rustc,
|
|
dist::DebuggerScripts,
|
|
dist::Std,
|
|
dist::RustcDev,
|
|
dist::Analysis,
|
|
dist::Src,
|
|
dist::PlainSourceTarball,
|
|
dist::Cargo,
|
|
dist::Rls,
|
|
dist::RustAnalyzer,
|
|
dist::Rustfmt,
|
|
dist::RustDemangler,
|
|
dist::Clippy,
|
|
dist::Miri,
|
|
dist::LlvmTools,
|
|
dist::RustDev,
|
|
dist::Extended,
|
|
dist::BuildManifest,
|
|
dist::ReproducibleArtifacts,
|
|
),
|
|
Kind::Install => describe!(
|
|
install::Docs,
|
|
install::Std,
|
|
install::Cargo,
|
|
install::Rls,
|
|
install::RustAnalyzer,
|
|
install::Rustfmt,
|
|
install::RustDemangler,
|
|
install::Clippy,
|
|
install::Miri,
|
|
install::Analysis,
|
|
install::Src,
|
|
install::Rustc
|
|
),
|
|
Kind::Run => describe!(run::ExpandYamlAnchors, run::BuildManifest, run::BumpStage0),
|
|
}
|
|
}
|
|
|
|
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 = Self::new_internal(build, kind, vec![]);
|
|
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");
|
|
let mut add_path = |path: &Path| {
|
|
help.push_str(&format!(" ./x.py {} {}\n", subcommand, path.display()));
|
|
};
|
|
for pathset in should_run.paths {
|
|
match pathset {
|
|
PathSet::Set(set) => {
|
|
for path in set {
|
|
add_path(&path);
|
|
}
|
|
}
|
|
PathSet::Suite(path) => {
|
|
add_path(&path.join("..."));
|
|
}
|
|
}
|
|
}
|
|
Some(help)
|
|
}
|
|
|
|
fn new_internal(build: &Build, kind: Kind, paths: Vec<PathBuf>) -> Builder<'_> {
|
|
Builder {
|
|
build,
|
|
top_stage: build.config.stage,
|
|
kind,
|
|
cache: Cache::new(),
|
|
stack: RefCell::new(Vec::new()),
|
|
time_spent_on_dependencies: Cell::new(Duration::new(0, 0)),
|
|
paths,
|
|
}
|
|
}
|
|
|
|
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::Run { ref paths } => (Kind::Run, &paths[..]),
|
|
Subcommand::Format { .. } | Subcommand::Clean { .. } | Subcommand::Setup { .. } => {
|
|
panic!()
|
|
}
|
|
};
|
|
|
|
Self::new_internal(build, kind, paths.to_owned())
|
|
}
|
|
|
|
pub fn execute_cli(&self) {
|
|
self.run_step_descriptions(&Builder::get_step_descriptions(self.kind), &self.paths);
|
|
}
|
|
|
|
pub fn default_doc(&self, paths: &[PathBuf]) {
|
|
self.run_step_descriptions(&Builder::get_step_descriptions(Kind::Doc), paths);
|
|
}
|
|
|
|
/// NOTE: keep this in sync with `rustdoc::clean::utils::doc_rust_lang_org_channel`, or tests will fail on beta/stable.
|
|
pub fn doc_rust_lang_org_channel(&self) -> String {
|
|
let channel = match &*self.config.channel {
|
|
"stable" => &self.version,
|
|
"beta" => "beta",
|
|
"nightly" | "dev" => "nightly",
|
|
// custom build of rustdoc maybe? link to the latest stable docs just in case
|
|
_ => "stable",
|
|
};
|
|
"https://doc.rust-lang.org/".to_owned() + channel
|
|
}
|
|
|
|
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: TargetSelection) -> 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: TargetSelection,
|
|
target: TargetSelection,
|
|
) -> 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: TargetSelection) -> Interned<PathBuf> {
|
|
#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)]
|
|
struct Libdir {
|
|
compiler: Compiler,
|
|
target: TargetSelection,
|
|
}
|
|
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.triple)
|
|
.join("lib");
|
|
// Avoid deleting the rustlib/ directory we just copied
|
|
// (in `impl Step for Sysroot`).
|
|
if !builder.config.download_rustc {
|
|
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("codegen-backends")
|
|
}
|
|
|
|
/// 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,
|
|
_ if compiler.stage == 0 => &self.build.initial_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 Command) {
|
|
// 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;
|
|
}
|
|
|
|
let mut dylib_dirs = vec![self.rustc_libdir(compiler)];
|
|
|
|
// Ensure that the downloaded LLVM libraries can be found.
|
|
if self.config.llvm_from_ci {
|
|
let ci_llvm_lib = self.out.join(&*compiler.host.triple).join("ci-llvm").join("lib");
|
|
dylib_dirs.push(ci_llvm_lib);
|
|
}
|
|
|
|
add_dylib_path(dylib_dirs, cmd);
|
|
}
|
|
|
|
/// 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("RUSTC_BOOTSTRAP", "1");
|
|
|
|
cmd.arg("-Wrustdoc::invalid_codeblock_attributes");
|
|
|
|
if self.config.deny_warnings {
|
|
cmd.arg("-Dwarnings");
|
|
}
|
|
cmd.arg("-Znormalize-docs");
|
|
|
|
// 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("RUSTDOC_LINKER", linker);
|
|
}
|
|
if self.is_fuse_ld_lld(compiler.host) {
|
|
cmd.env("RUSTDOC_FUSE_LD_LLD", "1");
|
|
}
|
|
cmd
|
|
}
|
|
|
|
/// Return the path to `llvm-config` for the target, if it exists.
|
|
///
|
|
/// Note that this returns `None` if LLVM is disabled, or if we're in a
|
|
/// check build or dry-run, where there's no need to build all of LLVM.
|
|
fn llvm_config(&self, target: TargetSelection) -> Option<PathBuf> {
|
|
if self.config.llvm_enabled() && self.kind != Kind::Check && !self.config.dry_run {
|
|
let llvm_config = self.ensure(native::Llvm { target });
|
|
if llvm_config.is_file() {
|
|
return Some(llvm_config);
|
|
}
|
|
}
|
|
None
|
|
}
|
|
|
|
/// 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,
|
|
source_type: SourceType,
|
|
target: TargetSelection,
|
|
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 => self.compiler_doc_out(target),
|
|
Mode::Std => out_dir.join(target.triple).join("doc"),
|
|
_ => panic!("doc mode {:?} not expected", mode),
|
|
};
|
|
let rustdoc = self.rustdoc(compiler);
|
|
self.clear_if_dirty(&my_out, &rustdoc);
|
|
}
|
|
|
|
cargo.env("CARGO_TARGET_DIR", &out_dir).arg(cmd);
|
|
|
|
let profile_var = |name: &str| {
|
|
let profile = if self.config.rust_optimize { "RELEASE" } else { "DEV" };
|
|
format!("CARGO_PROFILE_{}_{}", profile, name)
|
|
};
|
|
|
|
// See comment in rustc_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);
|
|
}
|
|
|
|
// Found with `rg "init_env_logger\("`. If anyone uses `init_env_logger`
|
|
// from out of tree it shouldn't matter, since x.py is only used for
|
|
// building in-tree.
|
|
let color_logs = ["RUSTDOC_LOG_COLOR", "RUSTC_LOG_COLOR", "RUST_LOG_COLOR"];
|
|
match self.build.config.color {
|
|
Color::Always => {
|
|
cargo.arg("--color=always");
|
|
for log in &color_logs {
|
|
cargo.env(log, "always");
|
|
}
|
|
}
|
|
Color::Never => {
|
|
cargo.arg("--color=never");
|
|
for log in &color_logs {
|
|
cargo.env(log, "never");
|
|
}
|
|
}
|
|
Color::Auto => {} // nothing to do
|
|
}
|
|
|
|
if cmd != "install" {
|
|
cargo.arg("--target").arg(target.rustc_target_arg());
|
|
} else {
|
|
assert_eq!(target, compiler.host);
|
|
}
|
|
|
|
// Set a flag for `check`/`clippy`/`fix`, so that certain build
|
|
// scripts can do less work (i.e. not building/requiring LLVM).
|
|
if cmd == "check" || cmd == "clippy" || cmd == "fix" {
|
|
// If we've not yet built LLVM, or it's stale, then bust
|
|
// the rustc_llvm cache. That will always work, even though it
|
|
// may mean that on the next non-check build we'll need to rebuild
|
|
// rustc_llvm. But if LLVM is stale, that'll be a tiny amount
|
|
// of work comparitively, and we'd likely need to rebuild it anyway,
|
|
// so that's okay.
|
|
if crate::native::prebuilt_llvm_config(self, target).is_err() {
|
|
cargo.env("RUST_CHECK", "1");
|
|
}
|
|
}
|
|
|
|
let stage = if compiler.stage == 0 && self.local_rebuild {
|
|
// Assume the local-rebuild rustc already has stage1 features.
|
|
1
|
|
} else {
|
|
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");
|
|
if cmd == "clippy" {
|
|
// clippy overwrites sysroot if we pass it to cargo.
|
|
// Pass it directly to clippy instead.
|
|
// NOTE: this can't be fixed in clippy because we explicitly don't set `RUSTC`,
|
|
// so it has no way of knowing the sysroot.
|
|
rustflags.arg("--sysroot");
|
|
rustflags.arg(
|
|
self.sysroot(compiler)
|
|
.as_os_str()
|
|
.to_str()
|
|
.expect("sysroot must be valid UTF-8"),
|
|
);
|
|
// Only run clippy on a very limited subset of crates (in particular, not build scripts).
|
|
cargo.arg("-Zunstable-options");
|
|
// Explicitly does *not* set `--cfg=bootstrap`, since we're using a nightly clippy.
|
|
let host_version = Command::new("rustc").arg("--version").output().map_err(|_| ());
|
|
let output = host_version.and_then(|output| {
|
|
if output.status.success() {
|
|
Ok(output)
|
|
} else {
|
|
Err(())
|
|
}
|
|
}).unwrap_or_else(|_| {
|
|
eprintln!(
|
|
"error: `x.py clippy` requires a host `rustc` toolchain with the `clippy` component"
|
|
);
|
|
eprintln!("help: try `rustup component add clippy`");
|
|
std::process::exit(1);
|
|
});
|
|
if !t!(std::str::from_utf8(&output.stdout)).contains("nightly") {
|
|
rustflags.arg("--cfg=bootstrap");
|
|
}
|
|
} else {
|
|
rustflags.arg("--cfg=bootstrap");
|
|
}
|
|
}
|
|
|
|
let use_new_symbol_mangling = match self.config.rust_new_symbol_mangling {
|
|
Some(setting) => {
|
|
// If an explicit setting is given, use that
|
|
setting
|
|
}
|
|
None => {
|
|
if mode == Mode::Std {
|
|
// The standard library defaults to the legacy scheme
|
|
false
|
|
} else {
|
|
// The compiler and tools default to the new scheme
|
|
true
|
|
}
|
|
}
|
|
};
|
|
|
|
// cfg(bootstrap) -- drop the compiler.stage == 0 branch.
|
|
if compiler.stage == 0 {
|
|
if use_new_symbol_mangling {
|
|
rustflags.arg("-Zsymbol-mangling-version=v0");
|
|
} else {
|
|
rustflags.arg("-Zsymbol-mangling-version=legacy");
|
|
}
|
|
} else {
|
|
if use_new_symbol_mangling {
|
|
rustflags.arg("-Csymbol-mangling-version=v0");
|
|
} else {
|
|
rustflags.arg("-Csymbol-mangling-version=legacy");
|
|
rustflags.arg("-Zunstable-options");
|
|
}
|
|
}
|
|
|
|
// FIXME: It might be better to use the same value for both `RUSTFLAGS` and `RUSTDOCFLAGS`,
|
|
// but this breaks CI. At the very least, stage0 `rustdoc` needs `--cfg bootstrap`. See
|
|
// #71458.
|
|
let mut rustdocflags = rustflags.clone();
|
|
rustdocflags.propagate_cargo_env("RUSTDOCFLAGS");
|
|
if stage == 0 {
|
|
rustdocflags.env("RUSTDOCFLAGS_BOOTSTRAP");
|
|
} else {
|
|
rustdocflags.env("RUSTDOCFLAGS_NOT_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"),
|
|
// Same for codegen backends.
|
|
Mode::Codegen => metadata.push_str("codegen"),
|
|
_ => {}
|
|
}
|
|
cargo.env("__CARGO_DEFAULT_LIB_METADATA", &metadata);
|
|
|
|
if cmd == "clippy" {
|
|
rustflags.arg("-Zforce-unstable-if-unmarked");
|
|
}
|
|
|
|
rustflags.arg("-Zmacro-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);
|
|
|
|
// Clear the output directory if the real rustc we're using has changed;
|
|
// Cargo cannot detect this as it thinks rustc is bootstrap/debug/rustc.
|
|
//
|
|
// Avoid doing this during dry run as that usually means the relevant
|
|
// compiler is not yet linked/copied properly.
|
|
//
|
|
// Only clear out the directory if we're compiling std; otherwise, we
|
|
// should let Cargo take care of things for us (via depdep info)
|
|
if !self.config.dry_run && mode == Mode::Std && cmd == "build" {
|
|
self.clear_if_dirty(&out_dir, &self.rustc(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_REAL", self.rustc(compiler))
|
|
.env("RUSTC_STAGE", stage.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");
|
|
// Clippy support is a hack and uses the default `cargo-clippy` in path.
|
|
// Don't override RUSTC so that the `cargo-clippy` in path will be run.
|
|
if cmd != "clippy" {
|
|
cargo.env("RUSTC", self.out.join("bootstrap/debug/rustc"));
|
|
}
|
|
|
|
// 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 ask. 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 && util::use_host_linker(target) {
|
|
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") {
|
|
rustflags.arg("-Clink-args=-Wl,-z,origin");
|
|
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 self.is_fuse_ld_lld(compiler.host) {
|
|
cargo.env("RUSTC_HOST_FUSE_LD_LLD", "1");
|
|
cargo.env("RUSTDOC_FUSE_LD_LLD", "1");
|
|
}
|
|
|
|
if let Some(target_linker) = self.linker(target) {
|
|
let target = crate::envify(&target.triple);
|
|
cargo.env(&format!("CARGO_TARGET_{}_LINKER", target), target_linker);
|
|
}
|
|
if self.is_fuse_ld_lld(target) {
|
|
rustflags.arg("-Clink-args=-fuse-ld=lld");
|
|
}
|
|
self.lld_flags(target).for_each(|flag| {
|
|
rustdocflags.arg(&flag);
|
|
});
|
|
|
|
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());
|
|
cargo.env(
|
|
profile_var("DEBUG_ASSERTIONS"),
|
|
if mode == Mode::Std {
|
|
self.config.rust_debug_assertions_std.to_string()
|
|
} else {
|
|
self.config.rust_debug_assertions.to_string()
|
|
},
|
|
);
|
|
cargo.env(
|
|
profile_var("OVERFLOW_CHECKS"),
|
|
if mode == Mode::Std {
|
|
self.config.rust_overflow_checks_std.to_string()
|
|
} else {
|
|
self.config.rust_overflow_checks.to_string()
|
|
},
|
|
);
|
|
|
|
// `dsymutil` adds time to builds on Apple platforms for no clear benefit, and also makes
|
|
// it more difficult for debuggers to find debug info. The compiler currently defaults to
|
|
// running `dsymutil` to preserve its historical default, but when compiling the compiler
|
|
// itself, we skip it by default since we know it's safe to do so in that case.
|
|
// See https://github.com/rust-lang/rust/issues/79361 for more info on this flag.
|
|
if target.contains("apple") {
|
|
if self.config.rust_run_dsymutil {
|
|
rustflags.arg("-Csplit-debuginfo=packed");
|
|
} else {
|
|
rustflags.arg("-Csplit-debuginfo=unpacked");
|
|
}
|
|
}
|
|
|
|
if self.config.cmd.bless() {
|
|
// Bless `expect!` tests.
|
|
cargo.env("UPDATE_EXPECT", "1");
|
|
}
|
|
|
|
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_to) = self.build.debuginfo_map_to(GitRepo::Rustc) {
|
|
let map = format!("{}={}", self.build.src.display(), map_to);
|
|
cargo.env("RUSTC_DEBUGINFO_MAP", map);
|
|
|
|
// `rustc` needs to know the virtual `/rustc/$hash` we're mapping to,
|
|
// in order to opportunistically reverse it later.
|
|
cargo.env("CFG_VIRTUAL_RUST_SOURCE_BASE_DIR", map_to);
|
|
}
|
|
|
|
// 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));
|
|
}
|
|
|
|
// Tools that use compiler libraries may inherit the `-lLLVM` link
|
|
// requirement, but the `-L` library path is not propagated across
|
|
// separate Cargo projects. We can add LLVM's library path to the
|
|
// platform-specific environment variable as a workaround.
|
|
if mode == Mode::ToolRustc || mode == Mode::Codegen {
|
|
if let Some(llvm_config) = self.llvm_config(target) {
|
|
let llvm_libdir = output(Command::new(&llvm_config).arg("--libdir"));
|
|
add_link_lib_path(vec![llvm_libdir.trim().into()], &mut cargo);
|
|
}
|
|
}
|
|
|
|
// Compile everything except libraries and proc macros with the more
|
|
// efficient initial-exec TLS model. This doesn't work with `dlopen`,
|
|
// so we can't use it by default in general, but we can use it for tools
|
|
// and our own internal libraries.
|
|
if !mode.must_support_dlopen() && !target.triple.starts_with("powerpc-") {
|
|
rustflags.arg("-Ztls-model=initial-exec");
|
|
}
|
|
|
|
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.print_step_rusage {
|
|
cargo.env("RUSTC_PRINT_STEP_RUSAGE", "1");
|
|
}
|
|
|
|
if self.config.backtrace_on_ice {
|
|
cargo.env("RUSTC_BACKTRACE_ON_ICE", "1");
|
|
}
|
|
|
|
cargo.env("RUSTC_VERBOSE", self.verbosity.to_string());
|
|
|
|
if source_type == SourceType::InTree {
|
|
let mut lint_flags = Vec::new();
|
|
// 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.
|
|
lint_flags.push("-Wrust_2018_idioms");
|
|
lint_flags.push("-Wunused_lifetimes");
|
|
lint_flags.push("-Wsemicolon_in_expressions_from_macros");
|
|
|
|
if self.config.deny_warnings {
|
|
lint_flags.push("-Dwarnings");
|
|
rustdocflags.arg("-Dwarnings");
|
|
}
|
|
|
|
// This does not use RUSTFLAGS due to caching issues with Cargo.
|
|
// Clippy is treated as an "in tree" tool, but shares the same
|
|
// cache as other "submodule" tools. With these options set in
|
|
// RUSTFLAGS, that causes *every* shared dependency to be rebuilt.
|
|
// By injecting this into the rustc wrapper, this circumvents
|
|
// Cargo's fingerprint detection. This is fine because lint flags
|
|
// are always ignored in dependencies. Eventually this should be
|
|
// fixed via better support from Cargo.
|
|
cargo.env("RUSTC_LINT_FLAGS", lint_flags.join(" "));
|
|
|
|
rustdocflags.arg("-Wrustdoc::invalid_codeblock_attributes");
|
|
}
|
|
|
|
if mode == Mode::Rustc {
|
|
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.triple), &cc);
|
|
|
|
let cflags = self.cflags(target, GitRepo::Rustc).join(" ");
|
|
cargo.env(format!("CFLAGS_{}", target.triple), &cflags);
|
|
|
|
if let Some(ar) = self.ar(target) {
|
|
let ranlib = format!("{} s", ar.display());
|
|
cargo
|
|
.env(format!("AR_{}", target.triple), ar)
|
|
.env(format!("RANLIB_{}", target.triple), ranlib);
|
|
}
|
|
|
|
if let Ok(cxx) = self.cxx(target) {
|
|
let cxx = ccacheify(&cxx);
|
|
cargo
|
|
.env(format!("CXX_{}", target.triple), &cxx)
|
|
.env(format!("CXXFLAGS_{}", target.triple), 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}",
|
|
);
|
|
}
|
|
|
|
// If Control Flow Guard is enabled, pass the `control-flow-guard` flag to rustc
|
|
// when compiling the standard library, since this might be linked into the final outputs
|
|
// produced by rustc. Since this mitigation is only available on Windows, only enable it
|
|
// for the standard library in case the compiler is run on a non-Windows platform.
|
|
// This is not needed for stage 0 artifacts because these will only be used for building
|
|
// the stage 1 compiler.
|
|
if cfg!(windows)
|
|
&& mode == Mode::Std
|
|
&& self.config.control_flow_guard
|
|
&& compiler.stage >= 1
|
|
{
|
|
rustflags.arg("-Ccontrol-flow-guard");
|
|
}
|
|
|
|
// For `cargo doc` invocations, make rustdoc print the Rust version into the docs
|
|
// This replaces spaces with newlines because RUSTDOCFLAGS does not
|
|
// support arguments with regular spaces. Hopefully someday Cargo will
|
|
// have space support.
|
|
let rust_version = self.rust_version().replace(' ', "\n");
|
|
rustdocflags.arg("--crate-version").arg(&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.triple);
|
|
|
|
// 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 0..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 matches!(mode, Mode::Std | Mode::Rustc) {
|
|
rustflags.arg("-Cprefer-dynamic");
|
|
}
|
|
|
|
// When building incrementally we default to a lower ThinLTO import limit
|
|
// (unless explicitly specified otherwise). This will produce a somewhat
|
|
// slower code but give way better compile times.
|
|
{
|
|
let limit = match self.config.rust_thin_lto_import_instr_limit {
|
|
Some(limit) => Some(limit),
|
|
None if self.config.incremental => Some(10),
|
|
_ => None,
|
|
};
|
|
|
|
if let Some(limit) = limit {
|
|
rustflags.arg(&format!("-Cllvm-args=-import-instr-limit={}", limit));
|
|
}
|
|
}
|
|
|
|
Cargo { command: cargo, rustflags, rustdocflags }
|
|
}
|
|
|
|
/// 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_than(1, &format!("{}c {:?}", " ".repeat(stack.len()), step));
|
|
|
|
return out;
|
|
}
|
|
self.verbose_than(1, &format!("{}> {:?}", " ".repeat(stack.len()), step));
|
|
stack.push(Box::new(step.clone()));
|
|
}
|
|
|
|
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)
|
|
};
|
|
|
|
if self.config.print_step_timings && !self.config.dry_run {
|
|
println!("[TIMING] {:?} -- {}.{:03}", step, dur.as_secs(), dur.subsec_millis());
|
|
}
|
|
|
|
{
|
|
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_than(1, &format!("{}< {:?}", " ".repeat(self.stack.borrow().len()), step));
|
|
self.cache.put(step, out.clone());
|
|
out
|
|
}
|
|
|
|
/// Ensure that a given step is built *only if it's supposed to be built by default*, returning
|
|
/// its output. This will cache the step, so it's safe (and good!) to call this as often as
|
|
/// needed to ensure that all dependencies are build.
|
|
pub(crate) fn ensure_if_default<T, S: Step<Output = Option<T>>>(
|
|
&'a self,
|
|
step: S,
|
|
) -> S::Output {
|
|
let desc = StepDescription::from::<S>();
|
|
let should_run = (desc.should_run)(ShouldRun::new(self));
|
|
|
|
// Avoid running steps contained in --exclude
|
|
for pathset in &should_run.paths {
|
|
if desc.is_excluded(self, pathset) {
|
|
return None;
|
|
}
|
|
}
|
|
|
|
// Only execute if it's supposed to run as default
|
|
if desc.default && should_run.is_really_default() { self.ensure(step) } else { None }
|
|
}
|
|
|
|
/// Checks if any of the "should_run" paths is in the `Builder` paths.
|
|
pub(crate) fn was_invoked_explicitly<S: Step>(&'a self) -> bool {
|
|
let desc = StepDescription::from::<S>();
|
|
let should_run = (desc.should_run)(ShouldRun::new(self));
|
|
|
|
for path in &self.paths {
|
|
if should_run.paths.iter().any(|s| s.has(path))
|
|
&& !desc.is_excluded(self, &PathSet::Suite(path.clone()))
|
|
{
|
|
return true;
|
|
}
|
|
}
|
|
|
|
false
|
|
}
|
|
}
|
|
|
|
#[cfg(test)]
|
|
mod tests;
|
|
|
|
#[derive(Debug, Clone)]
|
|
struct Rustflags(String, TargetSelection);
|
|
|
|
impl Rustflags {
|
|
fn new(target: TargetSelection) -> Rustflags {
|
|
let mut ret = Rustflags(String::new(), target);
|
|
ret.propagate_cargo_env("RUSTFLAGS");
|
|
ret
|
|
}
|
|
|
|
/// By default, cargo will pick up on various variables in the environment. However, bootstrap
|
|
/// reuses those variables to pass additional flags to rustdoc, so by default they get overriden.
|
|
/// Explicitly add back any previous value in the environment.
|
|
///
|
|
/// `prefix` is usually `RUSTFLAGS` or `RUSTDOCFLAGS`.
|
|
fn propagate_cargo_env(&mut self, prefix: &str) {
|
|
// Inherit `RUSTFLAGS` by default ...
|
|
self.env(prefix);
|
|
|
|
// ... and also handle target-specific env RUSTFLAGS if they're configured.
|
|
let target_specific = format!("CARGO_TARGET_{}_{}", crate::envify(&self.1.triple), prefix);
|
|
self.env(&target_specific);
|
|
}
|
|
|
|
fn env(&mut self, env: &str) {
|
|
if let Ok(s) = env::var(env) {
|
|
for part in s.split(' ') {
|
|
self.arg(part);
|
|
}
|
|
}
|
|
}
|
|
|
|
fn arg(&mut self, arg: &str) -> &mut Self {
|
|
assert_eq!(arg.split(' ').count(), 1);
|
|
if !self.0.is_empty() {
|
|
self.0.push(' ');
|
|
}
|
|
self.0.push_str(arg);
|
|
self
|
|
}
|
|
}
|
|
|
|
#[derive(Debug)]
|
|
pub struct Cargo {
|
|
command: Command,
|
|
rustflags: Rustflags,
|
|
rustdocflags: Rustflags,
|
|
}
|
|
|
|
impl Cargo {
|
|
pub fn rustdocflag(&mut self, arg: &str) -> &mut Cargo {
|
|
self.rustdocflags.arg(arg);
|
|
self
|
|
}
|
|
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 {
|
|
// These are managed through rustflag/rustdocflag interfaces.
|
|
assert_ne!(key.as_ref(), "RUSTFLAGS");
|
|
assert_ne!(key.as_ref(), "RUSTDOCFLAGS");
|
|
self.command.env(key.as_ref(), value.as_ref());
|
|
self
|
|
}
|
|
|
|
pub fn add_rustc_lib_path(&mut self, builder: &Builder<'_>, compiler: Compiler) {
|
|
builder.add_rustc_lib_path(compiler, &mut self.command);
|
|
}
|
|
|
|
pub fn current_dir(&mut self, dir: &Path) -> &mut Cargo {
|
|
self.command.current_dir(dir);
|
|
self
|
|
}
|
|
}
|
|
|
|
impl From<Cargo> for Command {
|
|
fn from(mut cargo: Cargo) -> Command {
|
|
let rustflags = &cargo.rustflags.0;
|
|
if !rustflags.is_empty() {
|
|
cargo.command.env("RUSTFLAGS", rustflags);
|
|
}
|
|
|
|
let rustdocflags = &cargo.rustdocflags.0;
|
|
if !rustdocflags.is_empty() {
|
|
cargo.command.env("RUSTDOCFLAGS", rustdocflags);
|
|
}
|
|
|
|
cargo.command
|
|
}
|
|
}
|