920 lines
33 KiB
Rust
920 lines
33 KiB
Rust
// Copyright 2015 The Rust Project Developers. See the COPYRIGHT
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// file at the top-level directory of this distribution and at
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// http://rust-lang.org/COPYRIGHT.
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//
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// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
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// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
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// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
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// option. This file may not be copied, modified, or distributed
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// except according to those terms.
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//! Implementation of rustbuild, the Rust build system.
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//!
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//! This module, and its descendants, are the implementation of the Rust build
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//! system. Most of this build system is backed by Cargo but the outer layer
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//! here serves as the ability to orchestrate calling Cargo, sequencing Cargo
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//! builds, building artifacts like LLVM, etc. The goals of rustbuild are:
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//!
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//! * To be an easily understandable, easily extensible, and maintainable build
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//! system.
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//! * Leverage standard tools in the Rust ecosystem to build the compiler, aka
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//! crates.io and Cargo.
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//! * A standard interface to build across all platforms, including MSVC
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//!
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//! ## Architecture
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//!
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//! The build system defers most of the complicated logic managing invocations
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//! of rustc and rustdoc to Cargo itself. However, moving through various stages
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//! and copying artifacts is still necessary for it to do. Each time rustbuild
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//! is invoked, it will iterate through the list of predefined steps and execute
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//! each serially in turn if it matches the paths passed or is a default rule.
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//! For each step rustbuild relies on the step internally being incremental and
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//! parallel. Note, though, that the `-j` parameter to rustbuild gets forwarded
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//! to appropriate test harnesses and such.
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//!
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//! Most of the "meaty" steps that matter are backed by Cargo, which does indeed
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//! have its own parallelism and incremental management. Later steps, like
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//! tests, aren't incremental and simply run the entire suite currently.
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//! However, compiletest itself tries to avoid running tests when the artifacts
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//! that are involved (mainly the compiler) haven't changed.
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//!
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//! When you execute `x.py build`, the steps which are executed are:
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//!
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//! * First, the python script is run. This will automatically download the
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//! stage0 rustc and cargo according to `src/stage0.txt`, or use the cached
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//! versions if they're available. These are then used to compile rustbuild
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//! itself (using Cargo). Finally, control is then transferred to rustbuild.
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//!
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//! * Rustbuild takes over, performs sanity checks, probes the environment,
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//! reads configuration, and starts executing steps as it reads the command
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//! line arguments (paths) or going through the default rules.
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//!
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//! The build output will be something like the following:
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//!
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//! Building stage0 std artifacts
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//! Copying stage0 std
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//! Building stage0 test artifacts
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//! Copying stage0 test
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//! Building stage0 compiler artifacts
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//! Copying stage0 rustc
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//! Assembling stage1 compiler
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//! Building stage1 std artifacts
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//! Copying stage1 std
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//! Building stage1 test artifacts
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//! Copying stage1 test
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//! Building stage1 compiler artifacts
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//! Copying stage1 rustc
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//! Assembling stage2 compiler
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//! Uplifting stage1 std
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//! Uplifting stage1 test
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//! Uplifting stage1 rustc
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//!
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//! Let's disect that a little:
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//!
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//! ## Building stage0 {std,test,compiler} artifacts
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//!
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//! These steps use the provided (downloaded, usually) compiler to compile the
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//! local Rust source into libraries we can use.
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//!
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//! ## Copying stage0 {std,test,rustc}
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//!
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//! This copies the build output from Cargo into
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//! `build/$HOST/stage0-sysroot/lib/rustlib/$ARCH/lib`. FIXME: This step's
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//! documentation should be expanded -- the information already here may be
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//! incorrect.
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//!
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//! ## Assembling stage1 compiler
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//!
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//! This copies the libraries we built in "building stage0 ... artifacts" into
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//! the stage1 compiler's lib directory. These are the host libraries that the
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//! compiler itself uses to run. These aren't actually used by artifacts the new
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//! compiler generates. This step also copies the rustc and rustdoc binaries we
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//! generated into build/$HOST/stage/bin.
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//!
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//! The stage1/bin/rustc is a fully functional compiler, but it doesn't yet have
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//! any libraries to link built binaries or libraries to. The next 3 steps will
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//! provide those libraries for it; they are mostly equivalent to constructing
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//! the stage1/bin compiler so we don't go through them individually.
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//!
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//! ## Uplifting stage1 {std,test,rustc}
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//!
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//! This step copies the libraries from the stage1 compiler sysroot into the
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//! stage2 compiler. This is done to avoid rebuilding the compiler; libraries
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//! we'd build in this step should be identical (in function, if not necessarily
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//! identical on disk) so there's no need to recompile the compiler again. Note
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//! that if you want to, you can enable the full-bootstrap option to change this
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//! behavior.
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//!
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//! Each step is driven by a separate Cargo project and rustbuild orchestrates
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//! copying files between steps and otherwise preparing for Cargo to run.
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//!
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//! ## Further information
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//!
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//! More documentation can be found in each respective module below, and you can
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//! also check out the `src/bootstrap/README.md` file for more information.
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#![deny(warnings)]
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#![allow(stable_features)]
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#![feature(associated_consts)]
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#[macro_use]
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extern crate build_helper;
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#[macro_use]
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extern crate serde_derive;
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#[macro_use]
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extern crate lazy_static;
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extern crate serde_json;
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extern crate cmake;
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extern crate filetime;
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extern crate cc;
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extern crate getopts;
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extern crate num_cpus;
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extern crate toml;
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#[cfg(unix)]
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extern crate libc;
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use std::cell::RefCell;
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use std::collections::{HashSet, HashMap};
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use std::env;
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use std::fs::{self, File};
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use std::io::Read;
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use std::path::{PathBuf, Path};
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use std::process::{self, Command};
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use std::slice;
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use build_helper::{run_silent, run_suppressed, try_run_silent, try_run_suppressed, output, mtime,
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BuildExpectation};
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use util::{exe, libdir, OutputFolder, CiEnv};
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mod cc_detect;
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mod channel;
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mod check;
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mod clean;
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mod compile;
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mod metadata;
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mod config;
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mod dist;
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mod doc;
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mod flags;
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mod install;
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mod native;
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mod sanity;
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pub mod util;
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mod builder;
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mod cache;
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mod tool;
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mod toolstate;
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#[cfg(windows)]
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mod job;
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#[cfg(unix)]
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mod job {
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use libc;
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pub unsafe fn setup(build: &mut ::Build) {
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if build.config.low_priority {
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libc::setpriority(libc::PRIO_PGRP as _, 0, 10);
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}
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}
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}
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#[cfg(not(any(unix, windows)))]
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mod job {
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pub unsafe fn setup(_build: &mut ::Build) {
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}
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}
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pub use config::Config;
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use flags::Subcommand;
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use cache::{Interned, INTERNER};
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/// A structure representing a Rust compiler.
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///
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/// Each compiler has a `stage` that it is associated with and a `host` that
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/// corresponds to the platform the compiler runs on. This structure is used as
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/// a parameter to many methods below.
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#[derive(Eq, PartialEq, Clone, Copy, Hash, Debug)]
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pub struct Compiler {
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stage: u32,
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host: Interned<String>,
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}
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/// Global configuration for the build system.
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///
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/// This structure transitively contains all configuration for the build system.
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/// All filesystem-encoded configuration is in `config`, all flags are in
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/// `flags`, and then parsed or probed information is listed in the keys below.
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///
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/// This structure is a parameter of almost all methods in the build system,
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/// although most functions are implemented as free functions rather than
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/// methods specifically on this structure itself (to make it easier to
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/// organize).
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pub struct Build {
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// User-specified configuration via config.toml
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config: Config,
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// Derived properties from the above two configurations
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src: PathBuf,
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out: PathBuf,
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rust_info: channel::GitInfo,
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cargo_info: channel::GitInfo,
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rls_info: channel::GitInfo,
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rustfmt_info: channel::GitInfo,
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local_rebuild: bool,
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fail_fast: bool,
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verbosity: usize,
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// Targets for which to build.
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build: Interned<String>,
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hosts: Vec<Interned<String>>,
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targets: Vec<Interned<String>>,
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// Stage 0 (downloaded) compiler and cargo or their local rust equivalents.
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initial_rustc: PathBuf,
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initial_cargo: PathBuf,
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// Probed tools at runtime
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lldb_version: Option<String>,
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lldb_python_dir: Option<String>,
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// Runtime state filled in later on
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// C/C++ compilers and archiver for all targets
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cc: HashMap<Interned<String>, cc::Tool>,
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cxx: HashMap<Interned<String>, cc::Tool>,
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ar: HashMap<Interned<String>, PathBuf>,
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// Misc
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crates: HashMap<Interned<String>, Crate>,
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is_sudo: bool,
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ci_env: CiEnv,
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delayed_failures: RefCell<Vec<String>>,
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}
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#[derive(Debug)]
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struct Crate {
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name: Interned<String>,
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version: String,
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deps: Vec<Interned<String>>,
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path: PathBuf,
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doc_step: String,
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build_step: String,
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test_step: String,
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bench_step: String,
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}
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/// The various "modes" of invoking Cargo.
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///
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/// These entries currently correspond to the various output directories of the
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/// build system, with each mod generating output in a different directory.
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#[derive(Debug, Hash, Clone, Copy, PartialEq, Eq)]
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pub enum Mode {
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/// Build the standard library, placing output in the "stageN-std" directory.
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Libstd,
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/// Build libtest, placing output in the "stageN-test" directory.
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Libtest,
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/// Build librustc and compiler libraries, placing output in the "stageN-rustc" directory.
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Librustc,
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/// Build some tool, placing output in the "stageN-tools" directory.
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Tool,
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}
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impl Build {
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/// Creates a new set of build configuration from the `flags` on the command
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/// line and the filesystem `config`.
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///
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/// By default all build output will be placed in the current directory.
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pub fn new(config: Config) -> Build {
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let cwd = t!(env::current_dir());
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let src = config.src.clone();
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let out = cwd.join("build");
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let is_sudo = match env::var_os("SUDO_USER") {
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Some(sudo_user) => {
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match env::var_os("USER") {
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Some(user) => user != sudo_user,
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None => false,
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}
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}
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None => false,
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};
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let rust_info = channel::GitInfo::new(&config, &src);
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let cargo_info = channel::GitInfo::new(&config, &src.join("src/tools/cargo"));
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let rls_info = channel::GitInfo::new(&config, &src.join("src/tools/rls"));
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let rustfmt_info = channel::GitInfo::new(&config, &src.join("src/tools/rustfmt"));
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Build {
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initial_rustc: config.initial_rustc.clone(),
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initial_cargo: config.initial_cargo.clone(),
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local_rebuild: config.local_rebuild,
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fail_fast: config.cmd.fail_fast(),
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verbosity: config.verbose,
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build: config.build,
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hosts: config.hosts.clone(),
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targets: config.targets.clone(),
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config,
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src,
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out,
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rust_info,
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cargo_info,
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rls_info,
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rustfmt_info,
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cc: HashMap::new(),
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cxx: HashMap::new(),
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ar: HashMap::new(),
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crates: HashMap::new(),
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lldb_version: None,
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lldb_python_dir: None,
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is_sudo,
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ci_env: CiEnv::current(),
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delayed_failures: RefCell::new(Vec::new()),
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}
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}
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pub fn build_triple(&self) -> &[Interned<String>] {
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unsafe {
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slice::from_raw_parts(&self.build, 1)
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}
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}
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/// Executes the entire build, as configured by the flags and configuration.
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pub fn build(&mut self) {
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unsafe {
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job::setup(self);
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}
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if let Subcommand::Clean { all } = self.config.cmd {
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return clean::clean(self, all);
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}
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self.verbose("finding compilers");
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cc_detect::find(self);
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self.verbose("running sanity check");
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sanity::check(self);
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// If local-rust is the same major.minor as the current version, then force a local-rebuild
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let local_version_verbose = output(
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Command::new(&self.initial_rustc).arg("--version").arg("--verbose"));
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let local_release = local_version_verbose
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.lines().filter(|x| x.starts_with("release:"))
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.next().unwrap().trim_left_matches("release:").trim();
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let my_version = channel::CFG_RELEASE_NUM;
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if local_release.split('.').take(2).eq(my_version.split('.').take(2)) {
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self.verbose(&format!("auto-detected local-rebuild {}", local_release));
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self.local_rebuild = true;
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}
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self.verbose("learning about cargo");
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metadata::build(self);
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builder::Builder::run(&self);
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// Check for postponed failures from `test --no-fail-fast`.
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let failures = self.delayed_failures.borrow();
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if failures.len() > 0 {
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println!("\n{} command(s) did not execute successfully:\n", failures.len());
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for failure in failures.iter() {
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println!(" - {}\n", failure);
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}
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process::exit(1);
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}
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}
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/// Clear out `dir` if `input` is newer.
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///
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/// After this executes, it will also ensure that `dir` exists.
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fn clear_if_dirty(&self, dir: &Path, input: &Path) -> bool {
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let stamp = dir.join(".stamp");
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let mut cleared = false;
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if mtime(&stamp) < mtime(input) {
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self.verbose(&format!("Dirty - {}", dir.display()));
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let _ = fs::remove_dir_all(dir);
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cleared = true;
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} else if stamp.exists() {
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return cleared;
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}
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t!(fs::create_dir_all(dir));
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t!(File::create(stamp));
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cleared
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}
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/// Get the space-separated set of activated features for the standard
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/// library.
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fn std_features(&self) -> String {
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let mut features = "panic-unwind".to_string();
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if self.config.debug_jemalloc {
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features.push_str(" debug-jemalloc");
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}
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if self.config.use_jemalloc {
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features.push_str(" jemalloc");
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}
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if self.config.backtrace {
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features.push_str(" backtrace");
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}
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if self.config.profiler {
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features.push_str(" profiler");
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}
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features
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}
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/// Get the space-separated set of activated features for the compiler.
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fn rustc_features(&self) -> String {
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let mut features = String::new();
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if self.config.use_jemalloc {
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features.push_str(" jemalloc");
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}
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if self.config.llvm_enabled {
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features.push_str(" llvm");
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}
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features
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}
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/// Component directory that Cargo will produce output into (e.g.
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/// release/debug)
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fn cargo_dir(&self) -> &'static str {
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if self.config.rust_optimize {"release"} else {"debug"}
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}
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fn tools_dir(&self, compiler: Compiler) -> PathBuf {
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let out = self.out.join(&*compiler.host).join(format!("stage{}-tools-bin", compiler.stage));
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t!(fs::create_dir_all(&out));
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out
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}
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/// Get the directory for incremental by-products when using the
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/// given compiler.
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fn incremental_dir(&self, compiler: Compiler) -> PathBuf {
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self.out.join(&*compiler.host).join(format!("stage{}-incremental", compiler.stage))
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}
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/// Returns the root directory for all output generated in a particular
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/// stage when running with a particular host compiler.
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///
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/// The mode indicates what the root directory is for.
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fn stage_out(&self, compiler: Compiler, mode: Mode) -> PathBuf {
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let suffix = match mode {
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Mode::Libstd => "-std",
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Mode::Libtest => "-test",
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Mode::Tool => "-tools",
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Mode::Librustc => "-rustc",
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};
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self.out.join(&*compiler.host)
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.join(format!("stage{}{}", compiler.stage, suffix))
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}
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/// Returns the root output directory for all Cargo output in a given stage,
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/// running a particular compiler, whether or not we're building the
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/// standard library, and targeting the specified architecture.
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fn cargo_out(&self,
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compiler: Compiler,
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mode: Mode,
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target: Interned<String>) -> PathBuf {
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self.stage_out(compiler, mode).join(&*target).join(self.cargo_dir())
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}
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/// Root output directory for LLVM compiled for `target`
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///
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/// Note that if LLVM is configured externally then the directory returned
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/// will likely be empty.
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fn llvm_out(&self, target: Interned<String>) -> PathBuf {
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self.out.join(&*target).join("llvm")
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}
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/// Output directory for all documentation for a target
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fn doc_out(&self, target: Interned<String>) -> PathBuf {
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self.out.join(&*target).join("doc")
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}
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/// Output directory for some generated md crate documentation for a target (temporary)
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fn md_doc_out(&self, target: Interned<String>) -> Interned<PathBuf> {
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INTERNER.intern_path(self.out.join(&*target).join("md-doc"))
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}
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/// Output directory for all crate documentation for a target (temporary)
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///
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/// The artifacts here are then copied into `doc_out` above.
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fn crate_doc_out(&self, target: Interned<String>) -> PathBuf {
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self.out.join(&*target).join("crate-docs")
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}
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/// Returns true if no custom `llvm-config` is set for the specified target.
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///
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/// If no custom `llvm-config` was specified then Rust's llvm will be used.
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fn is_rust_llvm(&self, target: Interned<String>) -> bool {
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match self.config.target_config.get(&target) {
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Some(ref c) => c.llvm_config.is_none(),
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None => true
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}
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}
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|
|
/// Returns the path to `llvm-config` for the specified target.
|
|
///
|
|
/// If a custom `llvm-config` was specified for target then that's returned
|
|
/// instead.
|
|
fn llvm_config(&self, target: Interned<String>) -> PathBuf {
|
|
let target_config = self.config.target_config.get(&target);
|
|
if let Some(s) = target_config.and_then(|c| c.llvm_config.as_ref()) {
|
|
s.clone()
|
|
} else {
|
|
self.llvm_out(self.config.build).join("bin")
|
|
.join(exe("llvm-config", &*target))
|
|
}
|
|
}
|
|
|
|
/// Returns the path to `FileCheck` binary for the specified target
|
|
fn llvm_filecheck(&self, target: Interned<String>) -> PathBuf {
|
|
let target_config = self.config.target_config.get(&target);
|
|
if let Some(s) = target_config.and_then(|c| c.llvm_config.as_ref()) {
|
|
let llvm_bindir = output(Command::new(s).arg("--bindir"));
|
|
Path::new(llvm_bindir.trim()).join(exe("FileCheck", &*target))
|
|
} else {
|
|
let base = self.llvm_out(self.config.build).join("build");
|
|
let exe = exe("FileCheck", &*target);
|
|
if !self.config.ninja && self.config.build.contains("msvc") {
|
|
base.join("Release/bin").join(exe)
|
|
} else {
|
|
base.join("bin").join(exe)
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Directory for libraries built from C/C++ code and shared between stages.
|
|
fn native_dir(&self, target: Interned<String>) -> PathBuf {
|
|
self.out.join(&*target).join("native")
|
|
}
|
|
|
|
/// Root output directory for rust_test_helpers library compiled for
|
|
/// `target`
|
|
fn test_helpers_out(&self, target: Interned<String>) -> PathBuf {
|
|
self.native_dir(target).join("rust-test-helpers")
|
|
}
|
|
|
|
/// Adds the `RUST_TEST_THREADS` env var if necessary
|
|
fn add_rust_test_threads(&self, cmd: &mut Command) {
|
|
if env::var_os("RUST_TEST_THREADS").is_none() {
|
|
cmd.env("RUST_TEST_THREADS", self.jobs().to_string());
|
|
}
|
|
}
|
|
|
|
/// Returns the libdir of the snapshot compiler.
|
|
fn rustc_snapshot_libdir(&self) -> PathBuf {
|
|
self.initial_rustc.parent().unwrap().parent().unwrap()
|
|
.join(libdir(&self.config.build))
|
|
}
|
|
|
|
/// Runs a command, printing out nice contextual information if its build
|
|
/// status is not the expected one
|
|
fn run_expecting(&self, cmd: &mut Command, expect: BuildExpectation) {
|
|
self.verbose(&format!("running: {:?}", cmd));
|
|
run_silent(cmd, expect)
|
|
}
|
|
|
|
/// Runs a command, printing out nice contextual information if it fails.
|
|
fn run(&self, cmd: &mut Command) {
|
|
self.run_expecting(cmd, BuildExpectation::None)
|
|
}
|
|
|
|
/// Runs a command, printing out nice contextual information if it fails.
|
|
fn run_quiet(&self, cmd: &mut Command) {
|
|
self.verbose(&format!("running: {:?}", cmd));
|
|
run_suppressed(cmd, BuildExpectation::None)
|
|
}
|
|
|
|
/// Runs a command, printing out nice contextual information if its build
|
|
/// status is not the expected one.
|
|
/// Exits if the command failed to execute at all, otherwise returns whether
|
|
/// the expectation was met
|
|
fn try_run(&self, cmd: &mut Command, expect: BuildExpectation) -> bool {
|
|
self.verbose(&format!("running: {:?}", cmd));
|
|
try_run_silent(cmd, expect)
|
|
}
|
|
|
|
/// Runs a command, printing out nice contextual information if it fails.
|
|
/// Exits if the command failed to execute at all, otherwise returns its
|
|
/// `status.success()`.
|
|
fn try_run_quiet(&self, cmd: &mut Command) -> bool {
|
|
self.verbose(&format!("running: {:?}", cmd));
|
|
try_run_suppressed(cmd, BuildExpectation::None)
|
|
}
|
|
|
|
pub fn is_verbose(&self) -> bool {
|
|
self.verbosity > 0
|
|
}
|
|
|
|
pub fn is_very_verbose(&self) -> bool {
|
|
self.verbosity > 1
|
|
}
|
|
|
|
/// Prints a message if this build is configured in verbose mode.
|
|
fn verbose(&self, msg: &str) {
|
|
if self.is_verbose() {
|
|
println!("{}", msg);
|
|
}
|
|
}
|
|
|
|
/// Returns the number of parallel jobs that have been configured for this
|
|
/// build.
|
|
fn jobs(&self) -> u32 {
|
|
self.config.jobs.unwrap_or_else(|| num_cpus::get() as u32)
|
|
}
|
|
|
|
/// Returns the path to the C compiler for the target specified.
|
|
fn cc(&self, target: Interned<String>) -> &Path {
|
|
self.cc[&target].path()
|
|
}
|
|
|
|
/// Returns a list of flags to pass to the C compiler for the target
|
|
/// specified.
|
|
fn cflags(&self, target: Interned<String>) -> Vec<String> {
|
|
// Filter out -O and /O (the optimization flags) that we picked up from
|
|
// cc-rs because the build scripts will determine that for themselves.
|
|
let mut base = self.cc[&target].args().iter()
|
|
.map(|s| s.to_string_lossy().into_owned())
|
|
.filter(|s| !s.starts_with("-O") && !s.starts_with("/O"))
|
|
.collect::<Vec<_>>();
|
|
|
|
// If we're compiling on macOS then we add a few unconditional flags
|
|
// indicating that we want libc++ (more filled out than libstdc++) and
|
|
// we want to compile for 10.7. This way we can ensure that
|
|
// LLVM/jemalloc/etc are all properly compiled.
|
|
if target.contains("apple-darwin") {
|
|
base.push("-stdlib=libc++".into());
|
|
}
|
|
|
|
// Work around an apparently bad MinGW / GCC optimization,
|
|
// See: http://lists.llvm.org/pipermail/cfe-dev/2016-December/051980.html
|
|
// See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78936
|
|
if &*target == "i686-pc-windows-gnu" {
|
|
base.push("-fno-omit-frame-pointer".into());
|
|
}
|
|
base
|
|
}
|
|
|
|
/// Returns the path to the `ar` archive utility for the target specified.
|
|
fn ar(&self, target: Interned<String>) -> Option<&Path> {
|
|
self.ar.get(&target).map(|p| &**p)
|
|
}
|
|
|
|
/// Returns the path to the C++ compiler for the target specified.
|
|
fn cxx(&self, target: Interned<String>) -> Result<&Path, String> {
|
|
match self.cxx.get(&target) {
|
|
Some(p) => Ok(p.path()),
|
|
None => Err(format!(
|
|
"target `{}` is not configured as a host, only as a target",
|
|
target))
|
|
}
|
|
}
|
|
|
|
/// Returns the path to the linker for the given target if it needs to be overriden.
|
|
fn linker(&self, target: Interned<String>) -> Option<&Path> {
|
|
if let Some(linker) = self.config.target_config.get(&target)
|
|
.and_then(|c| c.linker.as_ref()) {
|
|
Some(linker)
|
|
} else if target != self.config.build &&
|
|
!target.contains("msvc") && !target.contains("emscripten") {
|
|
Some(self.cc(target))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Returns if this target should statically link the C runtime, if specified
|
|
fn crt_static(&self, target: Interned<String>) -> Option<bool> {
|
|
if target.contains("pc-windows-msvc") {
|
|
Some(true)
|
|
} else {
|
|
self.config.target_config.get(&target)
|
|
.and_then(|t| t.crt_static)
|
|
}
|
|
}
|
|
|
|
/// Returns the "musl root" for this `target`, if defined
|
|
fn musl_root(&self, target: Interned<String>) -> Option<&Path> {
|
|
self.config.target_config.get(&target)
|
|
.and_then(|t| t.musl_root.as_ref())
|
|
.or(self.config.musl_root.as_ref())
|
|
.map(|p| &**p)
|
|
}
|
|
|
|
/// Returns whether the target will be tested using the `remote-test-client`
|
|
/// and `remote-test-server` binaries.
|
|
fn remote_tested(&self, target: Interned<String>) -> bool {
|
|
self.qemu_rootfs(target).is_some() || target.contains("android") ||
|
|
env::var_os("TEST_DEVICE_ADDR").is_some()
|
|
}
|
|
|
|
/// Returns the root of the "rootfs" image that this target will be using,
|
|
/// if one was configured.
|
|
///
|
|
/// If `Some` is returned then that means that tests for this target are
|
|
/// emulated with QEMU and binaries will need to be shipped to the emulator.
|
|
fn qemu_rootfs(&self, target: Interned<String>) -> Option<&Path> {
|
|
self.config.target_config.get(&target)
|
|
.and_then(|t| t.qemu_rootfs.as_ref())
|
|
.map(|p| &**p)
|
|
}
|
|
|
|
/// Path to the python interpreter to use
|
|
fn python(&self) -> &Path {
|
|
self.config.python.as_ref().unwrap()
|
|
}
|
|
|
|
/// Tests whether the `compiler` compiling for `target` should be forced to
|
|
/// use a stage1 compiler instead.
|
|
///
|
|
/// Currently, by default, the build system does not perform a "full
|
|
/// bootstrap" by default where we compile the compiler three times.
|
|
/// Instead, we compile the compiler two times. The final stage (stage2)
|
|
/// just copies the libraries from the previous stage, which is what this
|
|
/// method detects.
|
|
///
|
|
/// Here we return `true` if:
|
|
///
|
|
/// * The build isn't performing a full bootstrap
|
|
/// * The `compiler` is in the final stage, 2
|
|
/// * We're not cross-compiling, so the artifacts are already available in
|
|
/// stage1
|
|
///
|
|
/// When all of these conditions are met the build will lift artifacts from
|
|
/// the previous stage forward.
|
|
fn force_use_stage1(&self, compiler: Compiler, target: Interned<String>) -> bool {
|
|
!self.config.full_bootstrap &&
|
|
compiler.stage >= 2 &&
|
|
(self.hosts.iter().any(|h| *h == target) || target == self.build)
|
|
}
|
|
|
|
/// Returns the directory that OpenSSL artifacts are compiled into if
|
|
/// configured to do so.
|
|
fn openssl_dir(&self, target: Interned<String>) -> Option<PathBuf> {
|
|
// OpenSSL not used on Windows
|
|
if target.contains("windows") {
|
|
None
|
|
} else if self.config.openssl_static {
|
|
Some(self.out.join(&*target).join("openssl"))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Returns the directory that OpenSSL artifacts are installed into if
|
|
/// configured as such.
|
|
fn openssl_install_dir(&self, target: Interned<String>) -> Option<PathBuf> {
|
|
self.openssl_dir(target).map(|p| p.join("install"))
|
|
}
|
|
|
|
/// Given `num` in the form "a.b.c" return a "release string" which
|
|
/// describes the release version number.
|
|
///
|
|
/// For example on nightly this returns "a.b.c-nightly", on beta it returns
|
|
/// "a.b.c-beta.1" and on stable it just returns "a.b.c".
|
|
fn release(&self, num: &str) -> String {
|
|
match &self.config.channel[..] {
|
|
"stable" => num.to_string(),
|
|
"beta" => format!("{}-beta{}", num, channel::CFG_PRERELEASE_VERSION),
|
|
"nightly" => format!("{}-nightly", num),
|
|
_ => format!("{}-dev", num),
|
|
}
|
|
}
|
|
|
|
/// Returns the value of `release` above for Rust itself.
|
|
fn rust_release(&self) -> String {
|
|
self.release(channel::CFG_RELEASE_NUM)
|
|
}
|
|
|
|
/// Returns the "package version" for a component given the `num` release
|
|
/// number.
|
|
///
|
|
/// The package version is typically what shows up in the names of tarballs.
|
|
/// For channels like beta/nightly it's just the channel name, otherwise
|
|
/// it's the `num` provided.
|
|
fn package_vers(&self, num: &str) -> String {
|
|
match &self.config.channel[..] {
|
|
"stable" => num.to_string(),
|
|
"beta" => "beta".to_string(),
|
|
"nightly" => "nightly".to_string(),
|
|
_ => format!("{}-dev", num),
|
|
}
|
|
}
|
|
|
|
/// Returns the value of `package_vers` above for Rust itself.
|
|
fn rust_package_vers(&self) -> String {
|
|
self.package_vers(channel::CFG_RELEASE_NUM)
|
|
}
|
|
|
|
/// Returns the value of `package_vers` above for Cargo
|
|
fn cargo_package_vers(&self) -> String {
|
|
self.package_vers(&self.release_num("cargo"))
|
|
}
|
|
|
|
/// Returns the value of `package_vers` above for rls
|
|
fn rls_package_vers(&self) -> String {
|
|
self.package_vers(&self.release_num("rls"))
|
|
}
|
|
|
|
/// Returns the value of `package_vers` above for rustfmt
|
|
fn rustfmt_package_vers(&self) -> String {
|
|
self.package_vers(&self.release_num("rustfmt"))
|
|
}
|
|
|
|
/// Returns the `version` string associated with this compiler for Rust
|
|
/// itself.
|
|
///
|
|
/// Note that this is a descriptive string which includes the commit date,
|
|
/// sha, version, etc.
|
|
fn rust_version(&self) -> String {
|
|
self.rust_info.version(self, channel::CFG_RELEASE_NUM)
|
|
}
|
|
|
|
/// Return the full commit hash
|
|
fn rust_sha(&self) -> Option<&str> {
|
|
self.rust_info.sha()
|
|
}
|
|
|
|
/// Returns the `a.b.c` version that the given package is at.
|
|
fn release_num(&self, package: &str) -> String {
|
|
let mut toml = String::new();
|
|
let toml_file_name = self.src.join(&format!("src/tools/{}/Cargo.toml", package));
|
|
t!(t!(File::open(toml_file_name)).read_to_string(&mut toml));
|
|
for line in toml.lines() {
|
|
let prefix = "version = \"";
|
|
let suffix = "\"";
|
|
if line.starts_with(prefix) && line.ends_with(suffix) {
|
|
return line[prefix.len()..line.len() - suffix.len()].to_string()
|
|
}
|
|
}
|
|
|
|
panic!("failed to find version in {}'s Cargo.toml", package)
|
|
}
|
|
|
|
/// Returns whether unstable features should be enabled for the compiler
|
|
/// we're building.
|
|
fn unstable_features(&self) -> bool {
|
|
match &self.config.channel[..] {
|
|
"stable" | "beta" => false,
|
|
"nightly" | _ => true,
|
|
}
|
|
}
|
|
|
|
/// Fold the output of the commands after this method into a group. The fold
|
|
/// ends when the returned object is dropped. Folding can only be used in
|
|
/// the Travis CI environment.
|
|
pub fn fold_output<D, F>(&self, name: F) -> Option<OutputFolder>
|
|
where D: Into<String>, F: FnOnce() -> D
|
|
{
|
|
if self.ci_env == CiEnv::Travis {
|
|
Some(OutputFolder::new(name().into()))
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
/// Get a list of crates from a root crate.
|
|
///
|
|
/// Returns Vec<(crate, path to crate, is_root_crate)>
|
|
fn crates(&self, root: &str) -> Vec<(Interned<String>, &Path)> {
|
|
let interned = INTERNER.intern_string(root.to_owned());
|
|
let mut ret = Vec::new();
|
|
let mut list = vec![interned];
|
|
let mut visited = HashSet::new();
|
|
while let Some(krate) = list.pop() {
|
|
let krate = &self.crates[&krate];
|
|
// If we can't strip prefix, then out-of-tree path
|
|
let path = krate.path.strip_prefix(&self.src).unwrap_or(&krate.path);
|
|
ret.push((krate.name, path));
|
|
for dep in &krate.deps {
|
|
if visited.insert(dep) && dep != "build_helper" {
|
|
list.push(*dep);
|
|
}
|
|
}
|
|
}
|
|
ret
|
|
}
|
|
}
|
|
|
|
impl<'a> Compiler {
|
|
pub fn with_stage(mut self, stage: u32) -> Compiler {
|
|
self.stage = stage;
|
|
self
|
|
}
|
|
|
|
/// Returns whether this is a snapshot compiler for `build`'s configuration
|
|
pub fn is_snapshot(&self, build: &Build) -> bool {
|
|
self.stage == 0 && self.host == build.build
|
|
}
|
|
|
|
/// Returns if this compiler should be treated as a final stage one in the
|
|
/// current build session.
|
|
/// This takes into account whether we're performing a full bootstrap or
|
|
/// not; don't directly compare the stage with `2`!
|
|
pub fn is_final_stage(&self, build: &Build) -> bool {
|
|
let final_stage = if build.config.full_bootstrap { 2 } else { 1 };
|
|
self.stage >= final_stage
|
|
}
|
|
}
|