1414 lines
51 KiB
Rust
1414 lines
51 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::collections::HashMap;
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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::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::dist;
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use crate::doc;
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use crate::flags::Subcommand;
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use crate::install;
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use crate::native;
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use crate::test;
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use crate::tool;
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use crate::util::{self, add_lib_path, exe, libdir};
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use crate::{Build, DocTests, Mode, GitRepo};
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pub use crate::Compiler;
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use petgraph::graph::NodeIndex;
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use petgraph::Graph;
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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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graph_nodes: RefCell<HashMap<String, NodeIndex>>,
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graph: RefCell<Graph<String, bool>>,
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parent: Cell<Option<NodeIndex>>,
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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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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 host: Interned<String>,
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pub target: Interned<String>,
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pub path: PathBuf,
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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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#[derive(Debug, Clone, PartialOrd, Ord, PartialEq, Eq)]
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pub enum PathSet {
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Set(BTreeSet<PathBuf>),
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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
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.iter()
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.next()
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.unwrap_or(&builder.build.src)
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.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 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;
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} else 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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let hosts = &builder.hosts;
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// Determine the targets participating in this rule.
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let targets = if self.only_hosts {
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if builder.config.skip_only_host_steps {
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return; // don't run anything
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} else {
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&builder.hosts
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}
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} else {
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&builder.targets
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};
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for host in hosts {
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for target in targets {
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let run = RunConfig {
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builder,
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path: pathset.path(builder),
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host: *host,
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target: *target,
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};
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(self.make_run)(run);
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}
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}
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}
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fn run(v: &[StepDescription], builder: &Builder<'_>, paths: &[PathBuf]) {
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let should_runs = v
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.iter()
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.map(|desc| (desc.should_run)(ShouldRun::new(builder)))
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.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() {
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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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} else {
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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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}
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#[derive(Clone)]
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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: bool,
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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: 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 = cond;
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self
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}
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// Unlike `krate` this will create just one pathset. As such, it probably shouldn't actually
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// ever be used, but as we transition to having all rules properly handle passing krate(...) by
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// actually doing something different for every crate passed.
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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) {
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set.insert(PathBuf::from(&krate.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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pub fn krate(mut self, name: &str) -> Self {
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for krate in self.builder.in_tree_crates(name) {
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self.paths.insert(PathSet::one(&krate.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
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.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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}
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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::Rustc,
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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::Rustdoc,
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tool::Clippy,
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native::Llvm,
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tool::Rustfmt,
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tool::Miri,
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native::Lld
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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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),
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Kind::Test => describe!(
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crate::toolstate::ToolStateCheck,
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test::Tidy,
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test::Ui,
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test::CompileFail,
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test::RunFail,
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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,
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test::Debuginfo,
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test::UiFullDeps,
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test::Rustdoc,
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test::Pretty,
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test::RunFailPretty,
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test::RunPassValgrindPretty,
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test::Crate,
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test::CrateLibrustc,
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test::CrateRustdoc,
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test::Linkcheck,
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test::Cargotest,
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test::Cargo,
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test::Rls,
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test::ErrorIndex,
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test::Distcheck,
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test::RunMakeFullDeps,
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test::Nomicon,
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test::Reference,
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test::RustdocBook,
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test::RustByExample,
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test::TheBook,
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test::UnstableBook,
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test::RustcBook,
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test::RustcGuide,
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test::EmbeddedBook,
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test::EditionGuide,
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test::Rustfmt,
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test::Miri,
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test::Clippy,
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test::CompiletestTest,
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test::RustdocJSStd,
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test::RustdocJSNotStd,
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test::RustdocTheme,
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test::RustdocUi,
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// Run bootstrap close to the end as it's unlikely to fail
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test::Bootstrap,
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// Run run-make last, since these won't pass without make on Windows
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test::RunMake,
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),
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Kind::Bench => describe!(test::Crate, test::CrateLibrustc),
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Kind::Doc => describe!(
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doc::UnstableBook,
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doc::UnstableBookGen,
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doc::TheBook,
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doc::Standalone,
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doc::Std,
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|
doc::Rustc,
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|
doc::Rustdoc,
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|
doc::ErrorIndex,
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|
doc::Nomicon,
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|
doc::Reference,
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doc::RustdocBook,
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|
doc::RustByExample,
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doc::RustcBook,
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doc::CargoBook,
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doc::EmbeddedBook,
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doc::EditionGuide,
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),
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Kind::Dist => describe!(
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dist::Docs,
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dist::RustcDocs,
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dist::Mingw,
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dist::Rustc,
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dist::DebuggerScripts,
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|
dist::Std,
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|
dist::RustcDev,
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|
dist::Analysis,
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|
dist::Src,
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|
dist::PlainSourceTarball,
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|
dist::Cargo,
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|
dist::Rls,
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|
dist::Rustfmt,
|
|
dist::Clippy,
|
|
dist::Miri,
|
|
dist::LlvmTools,
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|
dist::Lldb,
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|
dist::Extended,
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|
dist::HashSign
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|
),
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|
Kind::Install => describe!(
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|
install::Docs,
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|
install::Std,
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|
install::Cargo,
|
|
install::Rls,
|
|
install::Rustfmt,
|
|
install::Clippy,
|
|
install::Miri,
|
|
install::Analysis,
|
|
install::Src,
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|
install::Rustc
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|
),
|
|
}
|
|
}
|
|
|
|
pub fn get_help(build: &Build, subcommand: &str) -> Option<String> {
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|
let kind = match subcommand {
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|
"build" => Kind::Build,
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|
"doc" => Kind::Doc,
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|
"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 })
|
|
}
|
|
|
|
/// 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))
|
|
}
|
|
}
|
|
|
|
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);
|
|
|
|
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
|
|
}
|
|
}
|