1845 lines
67 KiB
Rust
1845 lines
67 KiB
Rust
//! 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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//! ## 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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use std::cell::{Cell, RefCell};
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use std::collections::{HashMap, HashSet};
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use std::env;
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use std::fmt::Display;
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use std::fs::{self, File};
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use std::io;
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use std::path::{Path, PathBuf};
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use std::process::{Command, Stdio};
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use std::str;
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use build_helper::ci::{gha, CiEnv};
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use build_helper::exit;
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use channel::GitInfo;
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use config::{DryRun, Target};
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use filetime::FileTime;
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use once_cell::sync::OnceCell;
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use crate::builder::Kind;
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use crate::config::{LlvmLibunwind, TargetSelection};
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use crate::util::{
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dir_is_empty, exe, libdir, mtime, output, run, run_suppressed, symlink_dir, try_run_suppressed,
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};
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mod builder;
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mod cache;
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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 config;
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mod dist;
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mod doc;
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mod download;
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mod flags;
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mod format;
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mod install;
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mod llvm;
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mod metadata;
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mod render_tests;
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mod run;
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mod sanity;
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mod setup;
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mod suggest;
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mod synthetic_targets;
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mod tarball;
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mod test;
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mod tool;
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mod toolstate;
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pub mod util;
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#[cfg(feature = "build-metrics")]
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mod metrics;
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#[cfg(windows)]
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mod job;
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#[cfg(all(unix, not(target_os = "haiku")))]
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mod job {
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pub unsafe fn setup(build: &mut crate::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(any(target_os = "haiku", target_os = "hermit", not(any(unix, windows))))]
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mod job {
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pub unsafe fn setup(_build: &mut crate::Build) {}
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}
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pub use crate::builder::PathSet;
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use crate::cache::{Interned, INTERNER};
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pub use crate::config::Config;
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pub use crate::flags::Subcommand;
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use termcolor::{ColorChoice, StandardStream, WriteColor};
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const LLVM_TOOLS: &[&str] = &[
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"llvm-cov", // used to generate coverage report
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"llvm-nm", // used to inspect binaries; it shows symbol names, their sizes and visibility
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"llvm-objcopy", // used to transform ELFs into binary format which flashing tools consume
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"llvm-objdump", // used to disassemble programs
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"llvm-profdata", // used to inspect and merge files generated by profiles
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"llvm-readobj", // used to get information from ELFs/objects that the other tools don't provide
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"llvm-size", // used to prints the size of the linker sections of a program
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"llvm-strip", // used to discard symbols from binary files to reduce their size
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"llvm-ar", // used for creating and modifying archive files
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"llvm-as", // used to convert LLVM assembly to LLVM bitcode
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"llvm-dis", // used to disassemble LLVM bitcode
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"llc", // used to compile LLVM bytecode
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"opt", // used to optimize LLVM bytecode
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];
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/// LLD file names for all flavors.
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const LLD_FILE_NAMES: &[&str] = &["ld.lld", "ld64.lld", "lld-link", "wasm-ld"];
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pub const VERSION: usize = 2;
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/// Extra --check-cfg to add when building
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/// (Mode restriction, config name, config values (if any))
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const EXTRA_CHECK_CFGS: &[(Option<Mode>, &str, Option<&[&'static str]>)] = &[
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(None, "bootstrap", None),
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(Some(Mode::Rustc), "parallel_compiler", None),
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(Some(Mode::ToolRustc), "parallel_compiler", None),
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(Some(Mode::Codegen), "parallel_compiler", None),
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(Some(Mode::Std), "stdarch_intel_sde", None),
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(Some(Mode::Std), "no_fp_fmt_parse", None),
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(Some(Mode::Std), "no_global_oom_handling", None),
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(Some(Mode::Std), "no_rc", None),
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(Some(Mode::Std), "no_sync", None),
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(Some(Mode::Std), "freebsd12", None),
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(Some(Mode::Std), "freebsd13", None),
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(Some(Mode::Std), "backtrace_in_libstd", None),
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/* Extra values not defined in the built-in targets yet, but used in std */
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// #[cfg(bootstrap)]
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(Some(Mode::Std), "target_vendor", Some(&["unikraft"])),
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(Some(Mode::Std), "target_env", Some(&["libnx"])),
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(Some(Mode::Std), "target_os", Some(&["teeos"])),
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// #[cfg(bootstrap)] mips32r6, mips64r6
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(
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Some(Mode::Std),
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"target_arch",
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Some(&["asmjs", "spirv", "nvptx", "xtensa", "mips32r6", "mips64r6", "csky"]),
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),
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/* Extra names used by dependencies */
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// FIXME: Used by serde_json, but we should not be triggering on external dependencies.
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(Some(Mode::Rustc), "no_btreemap_remove_entry", None),
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(Some(Mode::ToolRustc), "no_btreemap_remove_entry", None),
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// FIXME: Used by crossbeam-utils, but we should not be triggering on external dependencies.
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(Some(Mode::Rustc), "crossbeam_loom", None),
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(Some(Mode::ToolRustc), "crossbeam_loom", None),
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// FIXME: Used by proc-macro2, but we should not be triggering on external dependencies.
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(Some(Mode::Rustc), "span_locations", None),
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(Some(Mode::ToolRustc), "span_locations", None),
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// FIXME: Used by rustix, but we should not be triggering on external dependencies.
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(Some(Mode::Rustc), "rustix_use_libc", None),
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(Some(Mode::ToolRustc), "rustix_use_libc", None),
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// FIXME: Used by filetime, but we should not be triggering on external dependencies.
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(Some(Mode::Rustc), "emulate_second_only_system", None),
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(Some(Mode::ToolRustc), "emulate_second_only_system", None),
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// Needed to avoid the need to copy windows.lib into the sysroot.
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(Some(Mode::Rustc), "windows_raw_dylib", None),
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(Some(Mode::ToolRustc), "windows_raw_dylib", None),
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];
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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, PartialOrd, Ord, PartialEq, Clone, Copy, Hash, Debug)]
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pub struct Compiler {
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stage: u32,
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host: TargetSelection,
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}
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#[derive(PartialEq, Eq, Copy, Clone, Debug)]
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pub enum DocTests {
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/// Run normal tests and doc tests (default).
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Yes,
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/// Do not run any doc tests.
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No,
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/// Only run doc tests.
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Only,
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}
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pub enum GitRepo {
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Rustc,
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Llvm,
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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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#[derive(Clone)]
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pub struct Build {
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/// User-specified configuration from `config.toml`.
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config: Config,
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// Version information
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version: String,
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// Properties derived from the above configuration
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src: PathBuf,
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out: PathBuf,
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bootstrap_out: PathBuf,
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cargo_info: channel::GitInfo,
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rust_analyzer_info: channel::GitInfo,
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clippy_info: channel::GitInfo,
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miri_info: channel::GitInfo,
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rustfmt_info: channel::GitInfo,
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in_tree_llvm_info: channel::GitInfo,
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local_rebuild: bool,
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fail_fast: bool,
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doc_tests: DocTests,
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verbosity: usize,
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// Targets for which to build
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build: TargetSelection,
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hosts: Vec<TargetSelection>,
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targets: Vec<TargetSelection>,
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initial_rustc: PathBuf,
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initial_cargo: PathBuf,
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initial_lld: PathBuf,
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initial_libdir: PathBuf,
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initial_sysroot: PathBuf,
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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: RefCell<HashMap<TargetSelection, cc::Tool>>,
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cxx: RefCell<HashMap<TargetSelection, cc::Tool>>,
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ar: RefCell<HashMap<TargetSelection, PathBuf>>,
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ranlib: RefCell<HashMap<TargetSelection, PathBuf>>,
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// Miscellaneous
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// allow bidirectional lookups: both name -> path and path -> name
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crates: HashMap<Interned<String>, Crate>,
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crate_paths: HashMap<PathBuf, Interned<String>>,
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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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prerelease_version: Cell<Option<u32>>,
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#[cfg(feature = "build-metrics")]
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metrics: metrics::BuildMetrics,
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}
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#[derive(Debug, Clone)]
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struct Crate {
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name: Interned<String>,
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deps: HashSet<Interned<String>>,
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path: PathBuf,
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has_lib: bool,
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}
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impl Crate {
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fn local_path(&self, build: &Build) -> PathBuf {
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self.path.strip_prefix(&build.config.src).unwrap().into()
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}
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}
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/// When building Rust various objects are handled differently.
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#[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord)]
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pub enum DependencyType {
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/// Libraries originating from proc-macros.
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Host,
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/// Typical Rust libraries.
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Target,
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/// Non Rust libraries and objects shipped to ease usage of certain targets.
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TargetSelfContained,
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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, PartialOrd, Ord)]
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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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Std,
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/// Build librustc, and compiler libraries, placing output in the "stageN-rustc" directory.
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Rustc,
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/// Build a codegen backend for rustc, placing the output in the "stageN-codegen" directory.
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Codegen,
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/// Build a tool, placing output in the "stage0-bootstrap-tools"
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/// directory. This is for miscellaneous sets of tools that are built
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/// using the bootstrap stage0 compiler in its entirety (target libraries
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/// and all). Typically these tools compile with stable Rust.
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ToolBootstrap,
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/// Build a tool which uses the locally built std, placing output in the
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/// "stageN-tools" directory. Its usage is quite rare, mainly used by
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/// compiletest which needs libtest.
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ToolStd,
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/// Build a tool which uses the locally built rustc and the target std,
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/// placing the output in the "stageN-tools" directory. This is used for
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/// anything that needs a fully functional rustc, such as rustdoc, clippy,
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/// cargo, rls, rustfmt, miri, etc.
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ToolRustc,
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}
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impl Mode {
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pub fn is_tool(&self) -> bool {
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matches!(self, Mode::ToolBootstrap | Mode::ToolRustc | Mode::ToolStd)
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}
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pub fn must_support_dlopen(&self) -> bool {
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matches!(self, Mode::Std | Mode::Codegen)
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}
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}
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pub enum CLang {
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C,
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Cxx,
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}
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macro_rules! forward {
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( $( $fn:ident( $($param:ident: $ty:ty),* ) $( -> $ret:ty)? ),+ $(,)? ) => {
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impl Build {
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$( fn $fn(&self, $($param: $ty),* ) $( -> $ret)? {
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self.config.$fn( $($param),* )
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} )+
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}
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}
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}
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forward! {
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verbose(msg: &str),
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is_verbose() -> bool,
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create(path: &Path, s: &str),
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remove(f: &Path),
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tempdir() -> PathBuf,
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llvm_link_shared() -> bool,
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download_rustc() -> bool,
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initial_rustfmt() -> Option<PathBuf>,
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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(mut config: Config) -> Build {
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let src = config.src.clone();
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let out = config.out.clone();
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#[cfg(unix)]
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// keep this consistent with the equivalent check in x.py:
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// https://github.com/rust-lang/rust/blob/a8a33cf27166d3eabaffc58ed3799e054af3b0c6/src/bootstrap/bootstrap.py#L796-L797
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let is_sudo = match env::var_os("SUDO_USER") {
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Some(_sudo_user) => {
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let uid = unsafe { libc::getuid() };
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uid == 0
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}
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None => false,
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};
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#[cfg(not(unix))]
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let is_sudo = false;
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let omit_git_hash = config.omit_git_hash;
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let rust_info = channel::GitInfo::new(omit_git_hash, &src);
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let cargo_info = channel::GitInfo::new(omit_git_hash, &src.join("src/tools/cargo"));
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let rust_analyzer_info =
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channel::GitInfo::new(omit_git_hash, &src.join("src/tools/rust-analyzer"));
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let clippy_info = channel::GitInfo::new(omit_git_hash, &src.join("src/tools/clippy"));
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let miri_info = channel::GitInfo::new(omit_git_hash, &src.join("src/tools/miri"));
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let rustfmt_info = channel::GitInfo::new(omit_git_hash, &src.join("src/tools/rustfmt"));
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// we always try to use git for LLVM builds
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let in_tree_llvm_info = channel::GitInfo::new(false, &src.join("src/llvm-project"));
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let initial_target_libdir_str = if config.dry_run() {
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"/dummy/lib/path/to/lib/".to_string()
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} else {
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output(
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Command::new(&config.initial_rustc)
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.arg("--target")
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.arg(config.build.rustc_target_arg())
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.arg("--print")
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.arg("target-libdir"),
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)
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};
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let initial_target_dir = Path::new(&initial_target_libdir_str).parent().unwrap();
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let initial_lld = initial_target_dir.join("bin").join("rust-lld");
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let initial_sysroot = if config.dry_run() {
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"/dummy".to_string()
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} else {
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output(Command::new(&config.initial_rustc).arg("--print").arg("sysroot"))
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}
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.trim()
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.to_string();
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let initial_libdir = initial_target_dir
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.parent()
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.unwrap()
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.parent()
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.unwrap()
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.strip_prefix(&initial_sysroot)
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.unwrap()
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.to_path_buf();
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let version = std::fs::read_to_string(src.join("src").join("version"))
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.expect("failed to read src/version");
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let version = version.trim();
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let bootstrap_out = std::env::current_exe()
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.expect("could not determine path to running process")
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.parent()
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.unwrap()
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.to_path_buf();
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if !bootstrap_out.join(exe("rustc", config.build)).exists() && !cfg!(test) {
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// this restriction can be lifted whenever https://github.com/rust-lang/rfcs/pull/3028 is implemented
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panic!(
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"`rustc` not found in {}, run `cargo build --bins` before `cargo run`",
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bootstrap_out.display()
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)
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}
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if rust_info.is_from_tarball() && config.description.is_none() {
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config.description = Some("built from a source tarball".to_owned());
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}
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let mut build = 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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initial_lld,
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initial_libdir,
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initial_sysroot: initial_sysroot.into(),
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local_rebuild: config.local_rebuild,
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fail_fast: config.cmd.fail_fast(),
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doc_tests: config.cmd.doc_tests(),
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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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version: version.to_string(),
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src,
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out,
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bootstrap_out,
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cargo_info,
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rust_analyzer_info,
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clippy_info,
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miri_info,
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rustfmt_info,
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in_tree_llvm_info,
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cc: RefCell::new(HashMap::new()),
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cxx: RefCell::new(HashMap::new()),
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ar: RefCell::new(HashMap::new()),
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ranlib: RefCell::new(HashMap::new()),
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crates: HashMap::new(),
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crate_paths: HashMap::new(),
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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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prerelease_version: Cell::new(None),
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#[cfg(feature = "build-metrics")]
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metrics: metrics::BuildMetrics::init(),
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};
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|
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// If local-rust is the same major.minor as the current version, then force a
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// local-rebuild
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let local_version_verbose =
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output(Command::new(&build.initial_rustc).arg("--version").arg("--verbose"));
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let local_release = local_version_verbose
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.lines()
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.filter_map(|x| x.strip_prefix("release:"))
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.next()
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.unwrap()
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.trim();
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if local_release.split('.').take(2).eq(version.split('.').take(2)) {
|
|
build.verbose(&format!("auto-detected local-rebuild {local_release}"));
|
|
build.local_rebuild = true;
|
|
}
|
|
|
|
build.verbose("finding compilers");
|
|
cc_detect::find(&build);
|
|
// When running `setup`, the profile is about to change, so any requirements we have now may
|
|
// be different on the next invocation. Don't check for them until the next time x.py is
|
|
// run. This is ok because `setup` never runs any build commands, so it won't fail if commands are missing.
|
|
//
|
|
// Similarly, for `setup` we don't actually need submodules or cargo metadata.
|
|
if !matches!(build.config.cmd, Subcommand::Setup { .. }) {
|
|
build.verbose("running sanity check");
|
|
sanity::check(&mut build);
|
|
|
|
// Make sure we update these before gathering metadata so we don't get an error about missing
|
|
// Cargo.toml files.
|
|
let rust_submodules = ["src/tools/cargo", "library/backtrace", "library/stdarch"];
|
|
for s in rust_submodules {
|
|
build.update_submodule(Path::new(s));
|
|
}
|
|
// Now, update all existing submodules.
|
|
build.update_existing_submodules();
|
|
|
|
build.verbose("learning about cargo");
|
|
metadata::build(&mut build);
|
|
}
|
|
|
|
// Make a symbolic link so we can use a consistent directory in the documentation.
|
|
let build_triple = build.out.join(&build.build.triple);
|
|
t!(fs::create_dir_all(&build_triple));
|
|
let host = build.out.join("host");
|
|
if host.is_symlink() {
|
|
// Left over from a previous build; overwrite it.
|
|
// This matters if `build.build` has changed between invocations.
|
|
#[cfg(windows)]
|
|
t!(fs::remove_dir(&host));
|
|
#[cfg(not(windows))]
|
|
t!(fs::remove_file(&host));
|
|
}
|
|
t!(
|
|
symlink_dir(&build.config, &build_triple, &host),
|
|
format!("symlink_dir({} => {}) failed", host.display(), build_triple.display())
|
|
);
|
|
|
|
build
|
|
}
|
|
|
|
// modified from `check_submodule` and `update_submodule` in bootstrap.py
|
|
/// Given a path to the directory of a submodule, update it.
|
|
///
|
|
/// `relative_path` should be relative to the root of the git repository, not an absolute path.
|
|
pub(crate) fn update_submodule(&self, relative_path: &Path) {
|
|
if !self.config.submodules(&self.rust_info()) {
|
|
return;
|
|
}
|
|
|
|
let absolute_path = self.config.src.join(relative_path);
|
|
|
|
// NOTE: The check for the empty directory is here because when running x.py the first time,
|
|
// the submodule won't be checked out. Check it out now so we can build it.
|
|
if !channel::GitInfo::new(false, &absolute_path).is_managed_git_subrepository()
|
|
&& !dir_is_empty(&absolute_path)
|
|
{
|
|
return;
|
|
}
|
|
|
|
// check_submodule
|
|
let checked_out_hash =
|
|
output(Command::new("git").args(&["rev-parse", "HEAD"]).current_dir(&absolute_path));
|
|
// update_submodules
|
|
let recorded = output(
|
|
Command::new("git")
|
|
.args(&["ls-tree", "HEAD"])
|
|
.arg(relative_path)
|
|
.current_dir(&self.config.src),
|
|
);
|
|
let actual_hash = recorded
|
|
.split_whitespace()
|
|
.nth(2)
|
|
.unwrap_or_else(|| panic!("unexpected output `{}`", recorded));
|
|
|
|
// update_submodule
|
|
if actual_hash == checked_out_hash.trim_end() {
|
|
// already checked out
|
|
return;
|
|
}
|
|
|
|
println!("Updating submodule {}", relative_path.display());
|
|
self.run(
|
|
Command::new("git")
|
|
.args(&["submodule", "-q", "sync"])
|
|
.arg(relative_path)
|
|
.current_dir(&self.config.src),
|
|
);
|
|
|
|
// Try passing `--progress` to start, then run git again without if that fails.
|
|
let update = |progress: bool| {
|
|
// Git is buggy and will try to fetch submodules from the tracking branch for *this* repository,
|
|
// even though that has no relation to the upstream for the submodule.
|
|
let current_branch = {
|
|
let output = self
|
|
.config
|
|
.git()
|
|
.args(["symbolic-ref", "--short", "HEAD"])
|
|
.stderr(Stdio::inherit())
|
|
.output();
|
|
let output = t!(output);
|
|
if output.status.success() {
|
|
Some(String::from_utf8(output.stdout).unwrap().trim().to_owned())
|
|
} else {
|
|
None
|
|
}
|
|
};
|
|
|
|
let mut git = self.config.git();
|
|
if let Some(branch) = current_branch {
|
|
// If there is a tag named after the current branch, git will try to disambiguate by prepending `heads/` to the branch name.
|
|
// This syntax isn't accepted by `branch.{branch}`. Strip it.
|
|
let branch = branch.strip_prefix("heads/").unwrap_or(&branch);
|
|
git.arg("-c").arg(format!("branch.{branch}.remote=origin"));
|
|
}
|
|
git.args(&["submodule", "update", "--init", "--recursive", "--depth=1"]);
|
|
if progress {
|
|
git.arg("--progress");
|
|
}
|
|
git.arg(relative_path);
|
|
git
|
|
};
|
|
// NOTE: doesn't use `try_run` because this shouldn't print an error if it fails.
|
|
if !update(true).status().map_or(false, |status| status.success()) {
|
|
self.run(&mut update(false));
|
|
}
|
|
|
|
// Save any local changes, but avoid running `git stash pop` if there are none (since it will exit with an error).
|
|
#[allow(deprecated)] // diff-index reports the modifications through the exit status
|
|
let has_local_modifications = self
|
|
.config
|
|
.try_run(
|
|
Command::new("git")
|
|
.args(&["diff-index", "--quiet", "HEAD"])
|
|
.current_dir(&absolute_path),
|
|
)
|
|
.is_err();
|
|
if has_local_modifications {
|
|
self.run(Command::new("git").args(&["stash", "push"]).current_dir(&absolute_path));
|
|
}
|
|
|
|
self.run(Command::new("git").args(&["reset", "-q", "--hard"]).current_dir(&absolute_path));
|
|
self.run(Command::new("git").args(&["clean", "-qdfx"]).current_dir(&absolute_path));
|
|
|
|
if has_local_modifications {
|
|
self.run(Command::new("git").args(&["stash", "pop"]).current_dir(absolute_path));
|
|
}
|
|
}
|
|
|
|
/// If any submodule has been initialized already, sync it unconditionally.
|
|
/// This avoids contributors checking in a submodule change by accident.
|
|
pub fn update_existing_submodules(&self) {
|
|
// Avoid running git when there isn't a git checkout.
|
|
if !self.config.submodules(&self.rust_info()) {
|
|
return;
|
|
}
|
|
let output = output(
|
|
self.config
|
|
.git()
|
|
.args(&["config", "--file"])
|
|
.arg(&self.config.src.join(".gitmodules"))
|
|
.args(&["--get-regexp", "path"]),
|
|
);
|
|
for line in output.lines() {
|
|
// Look for `submodule.$name.path = $path`
|
|
// Sample output: `submodule.src/rust-installer.path src/tools/rust-installer`
|
|
let submodule = Path::new(line.splitn(2, ' ').nth(1).unwrap());
|
|
// Don't update the submodule unless it's already been cloned.
|
|
if channel::GitInfo::new(false, submodule).is_managed_git_subrepository() {
|
|
self.update_submodule(submodule);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Executes the entire build, as configured by the flags and configuration.
|
|
pub fn build(&mut self) {
|
|
unsafe {
|
|
job::setup(self);
|
|
}
|
|
|
|
// Download rustfmt early so that it can be used in rust-analyzer configs.
|
|
let _ = &builder::Builder::new(&self).initial_rustfmt();
|
|
|
|
// hardcoded subcommands
|
|
match &self.config.cmd {
|
|
Subcommand::Format { check } => {
|
|
return format::format(&builder::Builder::new(&self), *check, &self.config.paths);
|
|
}
|
|
Subcommand::Suggest { run } => {
|
|
return suggest::suggest(&builder::Builder::new(&self), *run);
|
|
}
|
|
_ => (),
|
|
}
|
|
|
|
{
|
|
let builder = builder::Builder::new(&self);
|
|
if let Some(path) = builder.paths.get(0) {
|
|
if path == Path::new("nonexistent/path/to/trigger/cargo/metadata") {
|
|
return;
|
|
}
|
|
}
|
|
}
|
|
|
|
if !self.config.dry_run() {
|
|
{
|
|
self.config.dry_run = DryRun::SelfCheck;
|
|
let builder = builder::Builder::new(&self);
|
|
builder.execute_cli();
|
|
}
|
|
self.config.dry_run = DryRun::Disabled;
|
|
let builder = builder::Builder::new(&self);
|
|
builder.execute_cli();
|
|
} else {
|
|
let builder = builder::Builder::new(&self);
|
|
builder.execute_cli();
|
|
}
|
|
|
|
// Check for postponed failures from `test --no-fail-fast`.
|
|
let failures = self.delayed_failures.borrow();
|
|
if failures.len() > 0 {
|
|
eprintln!("\n{} command(s) did not execute successfully:\n", failures.len());
|
|
for failure in failures.iter() {
|
|
eprintln!(" - {failure}\n");
|
|
}
|
|
exit!(1);
|
|
}
|
|
|
|
#[cfg(feature = "build-metrics")]
|
|
self.metrics.persist(self);
|
|
}
|
|
|
|
/// Clear out `dir` if `input` is newer.
|
|
///
|
|
/// After this executes, it will also ensure that `dir` exists.
|
|
fn clear_if_dirty(&self, dir: &Path, input: &Path) -> bool {
|
|
let stamp = dir.join(".stamp");
|
|
let mut cleared = false;
|
|
if mtime(&stamp) < mtime(input) {
|
|
self.verbose(&format!("Dirty - {}", dir.display()));
|
|
let _ = fs::remove_dir_all(dir);
|
|
cleared = true;
|
|
} else if stamp.exists() {
|
|
return cleared;
|
|
}
|
|
t!(fs::create_dir_all(dir));
|
|
t!(File::create(stamp));
|
|
cleared
|
|
}
|
|
|
|
fn rust_info(&self) -> &GitInfo {
|
|
&self.config.rust_info
|
|
}
|
|
|
|
/// Gets the space-separated set of activated features for the standard
|
|
/// library.
|
|
fn std_features(&self, target: TargetSelection) -> String {
|
|
let mut features = " panic-unwind".to_string();
|
|
|
|
match self.config.llvm_libunwind(target) {
|
|
LlvmLibunwind::InTree => features.push_str(" llvm-libunwind"),
|
|
LlvmLibunwind::System => features.push_str(" system-llvm-libunwind"),
|
|
LlvmLibunwind::No => {}
|
|
}
|
|
if self.config.backtrace {
|
|
features.push_str(" backtrace");
|
|
}
|
|
if self.config.profiler_enabled(target) {
|
|
features.push_str(" profiler");
|
|
}
|
|
features
|
|
}
|
|
|
|
/// Gets the space-separated set of activated features for the compiler.
|
|
fn rustc_features(&self, kind: Kind) -> String {
|
|
let mut features = vec![];
|
|
if self.config.jemalloc {
|
|
features.push("jemalloc");
|
|
}
|
|
if self.config.llvm_enabled() || kind == Kind::Check {
|
|
features.push("llvm");
|
|
}
|
|
// keep in sync with `bootstrap/compile.rs:rustc_cargo_env`
|
|
if self.config.rustc_parallel {
|
|
features.push("rustc_use_parallel_compiler");
|
|
}
|
|
|
|
// If debug logging is on, then we want the default for tracing:
|
|
// https://github.com/tokio-rs/tracing/blob/3dd5c03d907afdf2c39444a29931833335171554/tracing/src/level_filters.rs#L26
|
|
// which is everything (including debug/trace/etc.)
|
|
// if its unset, if debug_assertions is on, then debug_logging will also be on
|
|
// as well as tracing *ignoring* this feature when debug_assertions is on
|
|
if !self.config.rust_debug_logging {
|
|
features.push("max_level_info");
|
|
}
|
|
|
|
features.join(" ")
|
|
}
|
|
|
|
/// Component directory that Cargo will produce output into (e.g.
|
|
/// release/debug)
|
|
fn cargo_dir(&self) -> &'static str {
|
|
if self.config.rust_optimize.is_release() { "release" } else { "debug" }
|
|
}
|
|
|
|
fn tools_dir(&self, compiler: Compiler) -> PathBuf {
|
|
let out = self
|
|
.out
|
|
.join(&*compiler.host.triple)
|
|
.join(format!("stage{}-tools-bin", compiler.stage));
|
|
t!(fs::create_dir_all(&out));
|
|
out
|
|
}
|
|
|
|
/// Returns the root directory for all output generated in a particular
|
|
/// stage when running with a particular host compiler.
|
|
///
|
|
/// The mode indicates what the root directory is for.
|
|
fn stage_out(&self, compiler: Compiler, mode: Mode) -> PathBuf {
|
|
let suffix = match mode {
|
|
Mode::Std => "-std",
|
|
Mode::Rustc => "-rustc",
|
|
Mode::Codegen => "-codegen",
|
|
Mode::ToolBootstrap => "-bootstrap-tools",
|
|
Mode::ToolStd | Mode::ToolRustc => "-tools",
|
|
};
|
|
self.out.join(&*compiler.host.triple).join(format!("stage{}{}", compiler.stage, suffix))
|
|
}
|
|
|
|
/// Returns the root output directory for all Cargo output in a given stage,
|
|
/// running a particular compiler, whether or not we're building the
|
|
/// standard library, and targeting the specified architecture.
|
|
fn cargo_out(&self, compiler: Compiler, mode: Mode, target: TargetSelection) -> PathBuf {
|
|
self.stage_out(compiler, mode).join(&*target.triple).join(self.cargo_dir())
|
|
}
|
|
|
|
/// Root output directory for LLVM compiled for `target`
|
|
///
|
|
/// Note that if LLVM is configured externally then the directory returned
|
|
/// will likely be empty.
|
|
fn llvm_out(&self, target: TargetSelection) -> PathBuf {
|
|
self.out.join(&*target.triple).join("llvm")
|
|
}
|
|
|
|
fn lld_out(&self, target: TargetSelection) -> PathBuf {
|
|
self.out.join(&*target.triple).join("lld")
|
|
}
|
|
|
|
/// Output directory for all documentation for a target
|
|
fn doc_out(&self, target: TargetSelection) -> PathBuf {
|
|
self.out.join(&*target.triple).join("doc")
|
|
}
|
|
|
|
/// Output directory for all JSON-formatted documentation for a target
|
|
fn json_doc_out(&self, target: TargetSelection) -> PathBuf {
|
|
self.out.join(&*target.triple).join("json-doc")
|
|
}
|
|
|
|
fn test_out(&self, target: TargetSelection) -> PathBuf {
|
|
self.out.join(&*target.triple).join("test")
|
|
}
|
|
|
|
/// Output directory for all documentation for a target
|
|
fn compiler_doc_out(&self, target: TargetSelection) -> PathBuf {
|
|
self.out.join(&*target.triple).join("compiler-doc")
|
|
}
|
|
|
|
/// Output directory for some generated md crate documentation for a target (temporary)
|
|
fn md_doc_out(&self, target: TargetSelection) -> Interned<PathBuf> {
|
|
INTERNER.intern_path(self.out.join(&*target.triple).join("md-doc"))
|
|
}
|
|
|
|
/// Returns `true` if no custom `llvm-config` is set for the specified target.
|
|
///
|
|
/// If no custom `llvm-config` was specified then Rust's llvm will be used.
|
|
fn is_rust_llvm(&self, target: TargetSelection) -> bool {
|
|
match self.config.target_config.get(&target) {
|
|
Some(Target { llvm_has_rust_patches: Some(patched), .. }) => *patched,
|
|
Some(Target { llvm_config, .. }) => {
|
|
// If the user set llvm-config we assume Rust is not patched,
|
|
// but first check to see if it was configured by llvm-from-ci.
|
|
(self.config.llvm_from_ci && target == self.config.build) || llvm_config.is_none()
|
|
}
|
|
None => true,
|
|
}
|
|
}
|
|
|
|
/// Returns the path to `FileCheck` binary for the specified target
|
|
fn llvm_filecheck(&self, target: TargetSelection) -> PathBuf {
|
|
let target_config = self.config.target_config.get(&target);
|
|
if let Some(s) = target_config.and_then(|c| c.llvm_filecheck.as_ref()) {
|
|
s.to_path_buf()
|
|
} else if let Some(s) = target_config.and_then(|c| c.llvm_config.as_ref()) {
|
|
let llvm_bindir = output(Command::new(s).arg("--bindir"));
|
|
let filecheck = Path::new(llvm_bindir.trim()).join(exe("FileCheck", target));
|
|
if filecheck.exists() {
|
|
filecheck
|
|
} else {
|
|
// On Fedora the system LLVM installs FileCheck in the
|
|
// llvm subdirectory of the libdir.
|
|
let llvm_libdir = output(Command::new(s).arg("--libdir"));
|
|
let lib_filecheck =
|
|
Path::new(llvm_libdir.trim()).join("llvm").join(exe("FileCheck", target));
|
|
if lib_filecheck.exists() {
|
|
lib_filecheck
|
|
} else {
|
|
// Return the most normal file name, even though
|
|
// it doesn't exist, so that any error message
|
|
// refers to that.
|
|
filecheck
|
|
}
|
|
}
|
|
} else {
|
|
let base = self.llvm_out(target).join("build");
|
|
let base = if !self.ninja() && target.contains("msvc") {
|
|
if self.config.llvm_optimize {
|
|
if self.config.llvm_release_debuginfo {
|
|
base.join("RelWithDebInfo")
|
|
} else {
|
|
base.join("Release")
|
|
}
|
|
} else {
|
|
base.join("Debug")
|
|
}
|
|
} else {
|
|
base
|
|
};
|
|
base.join("bin").join(exe("FileCheck", target))
|
|
}
|
|
}
|
|
|
|
/// Directory for libraries built from C/C++ code and shared between stages.
|
|
fn native_dir(&self, target: TargetSelection) -> PathBuf {
|
|
self.out.join(&*target.triple).join("native")
|
|
}
|
|
|
|
/// Root output directory for rust_test_helpers library compiled for
|
|
/// `target`
|
|
fn test_helpers_out(&self, target: TargetSelection) -> 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.rustc_snapshot_sysroot().join(libdir(self.config.build))
|
|
}
|
|
|
|
/// Returns the sysroot of the snapshot compiler.
|
|
fn rustc_snapshot_sysroot(&self) -> &Path {
|
|
static SYSROOT_CACHE: OnceCell<PathBuf> = once_cell::sync::OnceCell::new();
|
|
SYSROOT_CACHE.get_or_init(|| {
|
|
let mut rustc = Command::new(&self.initial_rustc);
|
|
rustc.args(&["--print", "sysroot"]);
|
|
output(&mut rustc).trim().into()
|
|
})
|
|
}
|
|
|
|
/// Runs a command, printing out nice contextual information if it fails.
|
|
fn run(&self, cmd: &mut Command) {
|
|
if self.config.dry_run() {
|
|
return;
|
|
}
|
|
self.verbose(&format!("running: {cmd:?}"));
|
|
run(cmd, self.is_verbose())
|
|
}
|
|
|
|
/// Runs a command, printing out nice contextual information if it fails.
|
|
fn run_quiet(&self, cmd: &mut Command) {
|
|
if self.config.dry_run() {
|
|
return;
|
|
}
|
|
self.verbose(&format!("running: {cmd:?}"));
|
|
run_suppressed(cmd)
|
|
}
|
|
|
|
/// 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 run_quiet_delaying_failure(&self, cmd: &mut Command) -> bool {
|
|
if self.config.dry_run() {
|
|
return true;
|
|
}
|
|
if !self.fail_fast {
|
|
self.verbose(&format!("running: {cmd:?}"));
|
|
if !try_run_suppressed(cmd) {
|
|
let mut failures = self.delayed_failures.borrow_mut();
|
|
failures.push(format!("{cmd:?}"));
|
|
return false;
|
|
}
|
|
} else {
|
|
self.run_quiet(cmd);
|
|
}
|
|
true
|
|
}
|
|
|
|
/// Runs a command, printing out contextual info if it fails, and delaying errors until the build finishes.
|
|
pub(crate) fn run_delaying_failure(&self, cmd: &mut Command) -> bool {
|
|
if !self.fail_fast {
|
|
#[allow(deprecated)] // can't use Build::try_run, that's us
|
|
if self.config.try_run(cmd).is_err() {
|
|
let mut failures = self.delayed_failures.borrow_mut();
|
|
failures.push(format!("{cmd:?}"));
|
|
return false;
|
|
}
|
|
} else {
|
|
self.run(cmd);
|
|
}
|
|
true
|
|
}
|
|
|
|
pub fn is_verbose_than(&self, level: usize) -> bool {
|
|
self.verbosity > level
|
|
}
|
|
|
|
/// Prints a message if this build is configured in more verbose mode than `level`.
|
|
fn verbose_than(&self, level: usize, msg: &str) {
|
|
if self.is_verbose_than(level) {
|
|
println!("{msg}");
|
|
}
|
|
}
|
|
|
|
fn info(&self, msg: &str) {
|
|
match self.config.dry_run {
|
|
DryRun::SelfCheck => (),
|
|
DryRun::Disabled | DryRun::UserSelected => {
|
|
println!("{msg}");
|
|
}
|
|
}
|
|
}
|
|
|
|
#[must_use = "Groups should not be dropped until the Step finishes running"]
|
|
#[track_caller]
|
|
fn msg_check(
|
|
&self,
|
|
what: impl Display,
|
|
target: impl Into<Option<TargetSelection>>,
|
|
) -> Option<gha::Group> {
|
|
self.msg(Kind::Check, self.config.stage, what, self.config.build, target)
|
|
}
|
|
|
|
#[must_use = "Groups should not be dropped until the Step finishes running"]
|
|
#[track_caller]
|
|
fn msg_doc(
|
|
&self,
|
|
compiler: Compiler,
|
|
what: impl Display,
|
|
target: impl Into<Option<TargetSelection>> + Copy,
|
|
) -> Option<gha::Group> {
|
|
self.msg(Kind::Doc, compiler.stage, what, compiler.host, target.into())
|
|
}
|
|
|
|
#[must_use = "Groups should not be dropped until the Step finishes running"]
|
|
#[track_caller]
|
|
fn msg_build(
|
|
&self,
|
|
compiler: Compiler,
|
|
what: impl Display,
|
|
target: impl Into<Option<TargetSelection>>,
|
|
) -> Option<gha::Group> {
|
|
self.msg(Kind::Build, compiler.stage, what, compiler.host, target)
|
|
}
|
|
|
|
/// Return a `Group` guard for a [`Step`] that is built for each `--stage`.
|
|
///
|
|
/// [`Step`]: crate::builder::Step
|
|
#[must_use = "Groups should not be dropped until the Step finishes running"]
|
|
#[track_caller]
|
|
fn msg(
|
|
&self,
|
|
action: impl Into<Kind>,
|
|
stage: u32,
|
|
what: impl Display,
|
|
host: impl Into<Option<TargetSelection>>,
|
|
target: impl Into<Option<TargetSelection>>,
|
|
) -> Option<gha::Group> {
|
|
let action = action.into().description();
|
|
let msg = |fmt| format!("{action} stage{stage} {what}{fmt}");
|
|
let msg = if let Some(target) = target.into() {
|
|
let host = host.into().unwrap();
|
|
if host == target {
|
|
msg(format_args!(" ({target})"))
|
|
} else {
|
|
msg(format_args!(" ({host} -> {target})"))
|
|
}
|
|
} else {
|
|
msg(format_args!(""))
|
|
};
|
|
self.group(&msg)
|
|
}
|
|
|
|
/// Return a `Group` guard for a [`Step`] that is only built once and isn't affected by `--stage`.
|
|
///
|
|
/// [`Step`]: crate::builder::Step
|
|
#[must_use = "Groups should not be dropped until the Step finishes running"]
|
|
#[track_caller]
|
|
fn msg_unstaged(
|
|
&self,
|
|
action: impl Into<Kind>,
|
|
what: impl Display,
|
|
target: TargetSelection,
|
|
) -> Option<gha::Group> {
|
|
let action = action.into().description();
|
|
let msg = format!("{action} {what} for {target}");
|
|
self.group(&msg)
|
|
}
|
|
|
|
#[must_use = "Groups should not be dropped until the Step finishes running"]
|
|
#[track_caller]
|
|
fn msg_sysroot_tool(
|
|
&self,
|
|
action: impl Into<Kind>,
|
|
stage: u32,
|
|
what: impl Display,
|
|
host: TargetSelection,
|
|
target: TargetSelection,
|
|
) -> Option<gha::Group> {
|
|
let action = action.into().description();
|
|
let msg = |fmt| format!("{action} {what} {fmt}");
|
|
let msg = if host == target {
|
|
msg(format_args!("(stage{stage} -> stage{}, {target})", stage + 1))
|
|
} else {
|
|
msg(format_args!("(stage{stage}:{host} -> stage{}:{target})", stage + 1))
|
|
};
|
|
self.group(&msg)
|
|
}
|
|
|
|
#[track_caller]
|
|
fn group(&self, msg: &str) -> Option<gha::Group> {
|
|
match self.config.dry_run {
|
|
DryRun::SelfCheck => None,
|
|
DryRun::Disabled | DryRun::UserSelected => Some(gha::group(&msg)),
|
|
}
|
|
}
|
|
|
|
/// Returns the number of parallel jobs that have been configured for this
|
|
/// build.
|
|
fn jobs(&self) -> u32 {
|
|
self.config.jobs.unwrap_or_else(|| {
|
|
std::thread::available_parallelism().map_or(1, std::num::NonZeroUsize::get) as u32
|
|
})
|
|
}
|
|
|
|
fn debuginfo_map_to(&self, which: GitRepo) -> Option<String> {
|
|
if !self.config.rust_remap_debuginfo {
|
|
return None;
|
|
}
|
|
|
|
match which {
|
|
GitRepo::Rustc => {
|
|
let sha = self.rust_sha().unwrap_or(&self.version);
|
|
Some(format!("/rustc/{sha}"))
|
|
}
|
|
GitRepo::Llvm => Some(String::from("/rustc/llvm")),
|
|
}
|
|
}
|
|
|
|
/// Returns the path to the C compiler for the target specified.
|
|
fn cc(&self, target: TargetSelection) -> PathBuf {
|
|
if self.config.dry_run() {
|
|
return PathBuf::new();
|
|
}
|
|
self.cc.borrow()[&target].path().into()
|
|
}
|
|
|
|
/// Returns a list of flags to pass to the C compiler for the target
|
|
/// specified.
|
|
fn cflags(&self, target: TargetSelection, which: GitRepo, c: CLang) -> Vec<String> {
|
|
if self.config.dry_run() {
|
|
return Vec::new();
|
|
}
|
|
let base = match c {
|
|
CLang::C => self.cc.borrow()[&target].clone(),
|
|
CLang::Cxx => self.cxx.borrow()[&target].clone(),
|
|
};
|
|
|
|
// 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 = base
|
|
.args()
|
|
.iter()
|
|
.map(|s| s.to_string_lossy().into_owned())
|
|
.filter(|s| !s.starts_with("-O") && !s.starts_with("/O"))
|
|
.collect::<Vec<String>>();
|
|
|
|
// 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/etc are all properly compiled.
|
|
if target.contains("apple-darwin") {
|
|
base.push("-stdlib=libc++".into());
|
|
}
|
|
|
|
// Work around an apparently bad MinGW / GCC optimization,
|
|
// See: https://lists.llvm.org/pipermail/cfe-dev/2016-December/051980.html
|
|
// See: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=78936
|
|
if &*target.triple == "i686-pc-windows-gnu" {
|
|
base.push("-fno-omit-frame-pointer".into());
|
|
}
|
|
|
|
if let Some(map_to) = self.debuginfo_map_to(which) {
|
|
let map = format!("{}={}", self.src.display(), map_to);
|
|
let cc = self.cc(target);
|
|
if cc.ends_with("clang") || cc.ends_with("gcc") {
|
|
base.push(format!("-fdebug-prefix-map={map}"));
|
|
} else if cc.ends_with("clang-cl.exe") {
|
|
base.push("-Xclang".into());
|
|
base.push(format!("-fdebug-prefix-map={map}"));
|
|
}
|
|
}
|
|
base
|
|
}
|
|
|
|
/// Returns the path to the `ar` archive utility for the target specified.
|
|
fn ar(&self, target: TargetSelection) -> Option<PathBuf> {
|
|
if self.config.dry_run() {
|
|
return None;
|
|
}
|
|
self.ar.borrow().get(&target).cloned()
|
|
}
|
|
|
|
/// Returns the path to the `ranlib` utility for the target specified.
|
|
fn ranlib(&self, target: TargetSelection) -> Option<PathBuf> {
|
|
if self.config.dry_run() {
|
|
return None;
|
|
}
|
|
self.ranlib.borrow().get(&target).cloned()
|
|
}
|
|
|
|
/// Returns the path to the C++ compiler for the target specified.
|
|
fn cxx(&self, target: TargetSelection) -> Result<PathBuf, String> {
|
|
if self.config.dry_run() {
|
|
return Ok(PathBuf::new());
|
|
}
|
|
match self.cxx.borrow().get(&target) {
|
|
Some(p) => Ok(p.path().into()),
|
|
None => Err(format!("target `{target}` is not configured as a host, only as a target")),
|
|
}
|
|
}
|
|
|
|
/// Returns the path to the linker for the given target if it needs to be overridden.
|
|
fn linker(&self, target: TargetSelection) -> Option<PathBuf> {
|
|
if self.config.dry_run() {
|
|
return Some(PathBuf::new());
|
|
}
|
|
if let Some(linker) = self.config.target_config.get(&target).and_then(|c| c.linker.clone())
|
|
{
|
|
Some(linker)
|
|
} else if target.contains("vxworks") {
|
|
// need to use CXX compiler as linker to resolve the exception functions
|
|
// that are only existed in CXX libraries
|
|
Some(self.cxx.borrow()[&target].path().into())
|
|
} else if target != self.config.build
|
|
&& util::use_host_linker(target)
|
|
&& !target.contains("msvc")
|
|
{
|
|
Some(self.cc(target))
|
|
} else if self.config.use_lld && !self.is_fuse_ld_lld(target) && self.build == target {
|
|
Some(self.initial_lld.clone())
|
|
} else {
|
|
None
|
|
}
|
|
}
|
|
|
|
// LLD is used through `-fuse-ld=lld` rather than directly.
|
|
// Only MSVC targets use LLD directly at the moment.
|
|
fn is_fuse_ld_lld(&self, target: TargetSelection) -> bool {
|
|
self.config.use_lld && !target.contains("msvc")
|
|
}
|
|
|
|
fn lld_flags(&self, target: TargetSelection) -> impl Iterator<Item = String> {
|
|
let mut options = [None, None];
|
|
|
|
if self.config.use_lld {
|
|
if self.is_fuse_ld_lld(target) {
|
|
options[0] = Some("-Clink-arg=-fuse-ld=lld".to_string());
|
|
}
|
|
|
|
let no_threads = util::lld_flag_no_threads(target.contains("windows"));
|
|
options[1] = Some(format!("-Clink-arg=-Wl,{no_threads}"));
|
|
}
|
|
|
|
IntoIterator::into_iter(options).flatten()
|
|
}
|
|
|
|
/// Returns if this target should statically link the C runtime, if specified
|
|
fn crt_static(&self, target: TargetSelection) -> 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: TargetSelection) -> Option<&Path> {
|
|
self.config
|
|
.target_config
|
|
.get(&target)
|
|
.and_then(|t| t.musl_root.as_ref())
|
|
.or_else(|| self.config.musl_root.as_ref())
|
|
.map(|p| &**p)
|
|
}
|
|
|
|
/// Returns the "musl libdir" for this `target`.
|
|
fn musl_libdir(&self, target: TargetSelection) -> Option<PathBuf> {
|
|
let t = self.config.target_config.get(&target)?;
|
|
if let libdir @ Some(_) = &t.musl_libdir {
|
|
return libdir.clone();
|
|
}
|
|
self.musl_root(target).map(|root| root.join("lib"))
|
|
}
|
|
|
|
/// Returns the sysroot for the wasi target, if defined
|
|
fn wasi_root(&self, target: TargetSelection) -> Option<&Path> {
|
|
self.config.target_config.get(&target).and_then(|t| t.wasi_root.as_ref()).map(|p| &**p)
|
|
}
|
|
|
|
/// Returns `true` if this is a no-std `target`, if defined
|
|
fn no_std(&self, target: TargetSelection) -> Option<bool> {
|
|
self.config.target_config.get(&target).map(|t| t.no_std)
|
|
}
|
|
|
|
/// Returns `true` if the target will be tested using the `remote-test-client`
|
|
/// and `remote-test-server` binaries.
|
|
fn remote_tested(&self, target: TargetSelection) -> 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: TargetSelection) -> 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 {
|
|
if self.config.build.ends_with("apple-darwin") {
|
|
// Force /usr/bin/python3 on macOS for LLDB tests because we're loading the
|
|
// LLDB plugin's compiled module which only works with the system python
|
|
// (namely not Homebrew-installed python)
|
|
Path::new("/usr/bin/python3")
|
|
} else {
|
|
self.config
|
|
.python
|
|
.as_ref()
|
|
.expect("python is required for running LLDB or rustdoc tests")
|
|
}
|
|
}
|
|
|
|
/// Temporary directory that extended error information is emitted to.
|
|
fn extended_error_dir(&self) -> PathBuf {
|
|
self.out.join("tmp/extended-error-metadata")
|
|
}
|
|
|
|
/// 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, stage: u32, target: TargetSelection) -> bool {
|
|
!self.config.full_bootstrap
|
|
&& !self.config.download_rustc()
|
|
&& stage >= 2
|
|
&& (self.hosts.iter().any(|h| *h == target) || target == self.build)
|
|
}
|
|
|
|
/// Checks whether the `compiler` compiling for `target` should be forced to
|
|
/// use a stage2 compiler instead.
|
|
///
|
|
/// When we download the pre-compiled version of rustc and compiler stage is >= 2,
|
|
/// it should be forced to use a stage2 compiler.
|
|
fn force_use_stage2(&self, stage: u32) -> bool {
|
|
self.config.download_rustc() && stage >= 2
|
|
}
|
|
|
|
/// 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" => {
|
|
if !self.config.omit_git_hash {
|
|
format!("{}-beta.{}", num, self.beta_prerelease_version())
|
|
} else {
|
|
format!("{num}-beta")
|
|
}
|
|
}
|
|
"nightly" => format!("{num}-nightly"),
|
|
_ => format!("{num}-dev"),
|
|
}
|
|
}
|
|
|
|
fn beta_prerelease_version(&self) -> u32 {
|
|
fn extract_beta_rev_from_file<P: AsRef<Path>>(version_file: P) -> Option<String> {
|
|
let version = fs::read_to_string(version_file).ok()?;
|
|
|
|
extract_beta_rev(&version)
|
|
}
|
|
|
|
if let Some(s) = self.prerelease_version.get() {
|
|
return s;
|
|
}
|
|
|
|
// First check if there is a version file available.
|
|
// If available, we read the beta revision from that file.
|
|
// This only happens when building from a source tarball when Git should not be used.
|
|
let count = extract_beta_rev_from_file(self.src.join("version")).unwrap_or_else(|| {
|
|
// Figure out how many merge commits happened since we branched off master.
|
|
// That's our beta number!
|
|
// (Note that we use a `..` range, not the `...` symmetric difference.)
|
|
output(self.config.git().arg("rev-list").arg("--count").arg("--merges").arg(format!(
|
|
"refs/remotes/origin/{}..HEAD",
|
|
self.config.stage0_metadata.config.nightly_branch
|
|
)))
|
|
});
|
|
let n = count.trim().parse().unwrap();
|
|
self.prerelease_version.set(Some(n));
|
|
n
|
|
}
|
|
|
|
/// Returns the value of `release` above for Rust itself.
|
|
fn rust_release(&self) -> String {
|
|
self.release(&self.version)
|
|
}
|
|
|
|
/// 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!("{num}-dev"),
|
|
}
|
|
}
|
|
|
|
/// Returns the value of `package_vers` above for Rust itself.
|
|
fn rust_package_vers(&self) -> String {
|
|
self.package_vers(&self.version)
|
|
}
|
|
|
|
/// 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 {
|
|
let mut version = self.rust_info().version(self, &self.version);
|
|
if let Some(ref s) = self.config.description {
|
|
version.push_str(" (");
|
|
version.push_str(s);
|
|
version.push(')');
|
|
}
|
|
version
|
|
}
|
|
|
|
/// Returns 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 toml_file_name = self.src.join(&format!("src/tools/{package}/Cargo.toml"));
|
|
let toml = t!(fs::read_to_string(&toml_file_name));
|
|
for line in toml.lines() {
|
|
if let Some(stripped) =
|
|
line.strip_prefix("version = \"").and_then(|s| s.strip_suffix("\""))
|
|
{
|
|
return stripped.to_owned();
|
|
}
|
|
}
|
|
|
|
panic!("failed to find version in {package}'s Cargo.toml")
|
|
}
|
|
|
|
/// Returns `true` if 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,
|
|
}
|
|
}
|
|
|
|
/// Returns a Vec of all the dependencies of the given root crate,
|
|
/// including transitive dependencies and the root itself. Only includes
|
|
/// "local" crates (those in the local source tree, not from a registry).
|
|
fn in_tree_crates(&self, root: &str, target: Option<TargetSelection>) -> Vec<&Crate> {
|
|
let mut ret = Vec::new();
|
|
let mut list = vec![INTERNER.intern_str(root)];
|
|
let mut visited = HashSet::new();
|
|
while let Some(krate) = list.pop() {
|
|
let krate = self
|
|
.crates
|
|
.get(&krate)
|
|
.unwrap_or_else(|| panic!("metadata missing for {krate}: {:?}", self.crates));
|
|
ret.push(krate);
|
|
for dep in &krate.deps {
|
|
if !self.crates.contains_key(dep) {
|
|
// Ignore non-workspace members.
|
|
continue;
|
|
}
|
|
// Don't include optional deps if their features are not
|
|
// enabled. Ideally this would be computed from `cargo
|
|
// metadata --features …`, but that is somewhat slow. In
|
|
// the future, we may want to consider just filtering all
|
|
// build and dev dependencies in metadata::build.
|
|
if visited.insert(dep)
|
|
&& (dep != "profiler_builtins"
|
|
|| target
|
|
.map(|t| self.config.profiler_enabled(t))
|
|
.unwrap_or_else(|| self.config.any_profiler_enabled()))
|
|
&& (dep != "rustc_codegen_llvm" || self.config.llvm_enabled())
|
|
{
|
|
list.push(*dep);
|
|
}
|
|
}
|
|
}
|
|
ret.sort_unstable_by_key(|krate| krate.name); // reproducible order needed for tests
|
|
ret
|
|
}
|
|
|
|
fn read_stamp_file(&self, stamp: &Path) -> Vec<(PathBuf, DependencyType)> {
|
|
if self.config.dry_run() {
|
|
return Vec::new();
|
|
}
|
|
|
|
if !stamp.exists() {
|
|
eprintln!(
|
|
"Error: Unable to find the stamp file {}, did you try to keep a nonexistent build stage?",
|
|
stamp.display()
|
|
);
|
|
crate::exit!(1);
|
|
}
|
|
|
|
let mut paths = Vec::new();
|
|
let contents = t!(fs::read(stamp), &stamp);
|
|
// This is the method we use for extracting paths from the stamp file passed to us. See
|
|
// run_cargo for more information (in compile.rs).
|
|
for part in contents.split(|b| *b == 0) {
|
|
if part.is_empty() {
|
|
continue;
|
|
}
|
|
let dependency_type = match part[0] as char {
|
|
'h' => DependencyType::Host,
|
|
's' => DependencyType::TargetSelfContained,
|
|
't' => DependencyType::Target,
|
|
_ => unreachable!(),
|
|
};
|
|
let path = PathBuf::from(t!(str::from_utf8(&part[1..])));
|
|
paths.push((path, dependency_type));
|
|
}
|
|
paths
|
|
}
|
|
|
|
/// Copies a file from `src` to `dst`
|
|
pub fn copy(&self, src: &Path, dst: &Path) {
|
|
self.copy_internal(src, dst, false);
|
|
}
|
|
|
|
fn copy_internal(&self, src: &Path, dst: &Path, dereference_symlinks: bool) {
|
|
if self.config.dry_run() {
|
|
return;
|
|
}
|
|
self.verbose_than(1, &format!("Copy {src:?} to {dst:?}"));
|
|
if src == dst {
|
|
return;
|
|
}
|
|
let _ = fs::remove_file(&dst);
|
|
let metadata = t!(src.symlink_metadata());
|
|
let mut src = src.to_path_buf();
|
|
if metadata.file_type().is_symlink() {
|
|
if dereference_symlinks {
|
|
src = t!(fs::canonicalize(src));
|
|
} else {
|
|
let link = t!(fs::read_link(src));
|
|
t!(self.symlink_file(link, dst));
|
|
return;
|
|
}
|
|
}
|
|
if let Ok(()) = fs::hard_link(&src, dst) {
|
|
// Attempt to "easy copy" by creating a hard link
|
|
// (symlinks don't work on windows), but if that fails
|
|
// just fall back to a slow `copy` operation.
|
|
} else {
|
|
if let Err(e) = fs::copy(&src, dst) {
|
|
panic!("failed to copy `{}` to `{}`: {}", src.display(), dst.display(), e)
|
|
}
|
|
t!(fs::set_permissions(dst, metadata.permissions()));
|
|
let atime = FileTime::from_last_access_time(&metadata);
|
|
let mtime = FileTime::from_last_modification_time(&metadata);
|
|
t!(filetime::set_file_times(dst, atime, mtime));
|
|
}
|
|
}
|
|
|
|
/// Copies the `src` directory recursively to `dst`. Both are assumed to exist
|
|
/// when this function is called.
|
|
pub fn cp_r(&self, src: &Path, dst: &Path) {
|
|
if self.config.dry_run() {
|
|
return;
|
|
}
|
|
for f in self.read_dir(src) {
|
|
let path = f.path();
|
|
let name = path.file_name().unwrap();
|
|
let dst = dst.join(name);
|
|
if t!(f.file_type()).is_dir() {
|
|
t!(fs::create_dir_all(&dst));
|
|
self.cp_r(&path, &dst);
|
|
} else {
|
|
let _ = fs::remove_file(&dst);
|
|
self.copy(&path, &dst);
|
|
}
|
|
}
|
|
}
|
|
|
|
/// Copies the `src` directory recursively to `dst`. Both are assumed to exist
|
|
/// when this function is called. Unwanted files or directories can be skipped
|
|
/// by returning `false` from the filter function.
|
|
pub fn cp_filtered(&self, src: &Path, dst: &Path, filter: &dyn Fn(&Path) -> bool) {
|
|
// Immediately recurse with an empty relative path
|
|
self.recurse_(src, dst, Path::new(""), filter)
|
|
}
|
|
|
|
// Inner function does the actual work
|
|
fn recurse_(&self, src: &Path, dst: &Path, relative: &Path, filter: &dyn Fn(&Path) -> bool) {
|
|
for f in self.read_dir(src) {
|
|
let path = f.path();
|
|
let name = path.file_name().unwrap();
|
|
let dst = dst.join(name);
|
|
let relative = relative.join(name);
|
|
// Only copy file or directory if the filter function returns true
|
|
if filter(&relative) {
|
|
if t!(f.file_type()).is_dir() {
|
|
let _ = fs::remove_dir_all(&dst);
|
|
self.create_dir(&dst);
|
|
self.recurse_(&path, &dst, &relative, filter);
|
|
} else {
|
|
let _ = fs::remove_file(&dst);
|
|
self.copy(&path, &dst);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
fn copy_to_folder(&self, src: &Path, dest_folder: &Path) {
|
|
let file_name = src.file_name().unwrap();
|
|
let dest = dest_folder.join(file_name);
|
|
self.copy(src, &dest);
|
|
}
|
|
|
|
fn install(&self, src: &Path, dstdir: &Path, perms: u32) {
|
|
if self.config.dry_run() {
|
|
return;
|
|
}
|
|
let dst = dstdir.join(src.file_name().unwrap());
|
|
self.verbose_than(1, &format!("Install {src:?} to {dst:?}"));
|
|
t!(fs::create_dir_all(dstdir));
|
|
if !src.exists() {
|
|
panic!("Error: File \"{}\" not found!", src.display());
|
|
}
|
|
self.copy_internal(src, &dst, true);
|
|
chmod(&dst, perms);
|
|
}
|
|
|
|
fn read(&self, path: &Path) -> String {
|
|
if self.config.dry_run() {
|
|
return String::new();
|
|
}
|
|
t!(fs::read_to_string(path))
|
|
}
|
|
|
|
fn create_dir(&self, dir: &Path) {
|
|
if self.config.dry_run() {
|
|
return;
|
|
}
|
|
t!(fs::create_dir_all(dir))
|
|
}
|
|
|
|
fn remove_dir(&self, dir: &Path) {
|
|
if self.config.dry_run() {
|
|
return;
|
|
}
|
|
t!(fs::remove_dir_all(dir))
|
|
}
|
|
|
|
fn read_dir(&self, dir: &Path) -> impl Iterator<Item = fs::DirEntry> {
|
|
let iter = match fs::read_dir(dir) {
|
|
Ok(v) => v,
|
|
Err(_) if self.config.dry_run() => return vec![].into_iter(),
|
|
Err(err) => panic!("could not read dir {dir:?}: {err:?}"),
|
|
};
|
|
iter.map(|e| t!(e)).collect::<Vec<_>>().into_iter()
|
|
}
|
|
|
|
fn symlink_file<P: AsRef<Path>, Q: AsRef<Path>>(&self, src: P, link: Q) -> io::Result<()> {
|
|
#[cfg(unix)]
|
|
use std::os::unix::fs::symlink as symlink_file;
|
|
#[cfg(windows)]
|
|
use std::os::windows::fs::symlink_file;
|
|
if !self.config.dry_run() { symlink_file(src.as_ref(), link.as_ref()) } else { Ok(()) }
|
|
}
|
|
|
|
/// Returns if config.ninja is enabled, and checks for ninja existence,
|
|
/// exiting with a nicer error message if not.
|
|
fn ninja(&self) -> bool {
|
|
let mut cmd_finder = crate::sanity::Finder::new();
|
|
|
|
if self.config.ninja_in_file {
|
|
// Some Linux distros rename `ninja` to `ninja-build`.
|
|
// CMake can work with either binary name.
|
|
if cmd_finder.maybe_have("ninja-build").is_none()
|
|
&& cmd_finder.maybe_have("ninja").is_none()
|
|
{
|
|
eprintln!(
|
|
"
|
|
Couldn't find required command: ninja (or ninja-build)
|
|
|
|
You should install ninja as described at
|
|
<https://github.com/ninja-build/ninja/wiki/Pre-built-Ninja-packages>,
|
|
or set `ninja = false` in the `[llvm]` section of `config.toml`.
|
|
Alternatively, set `download-ci-llvm = true` in that `[llvm]` section
|
|
to download LLVM rather than building it.
|
|
"
|
|
);
|
|
exit!(1);
|
|
}
|
|
}
|
|
|
|
// If ninja isn't enabled but we're building for MSVC then we try
|
|
// doubly hard to enable it. It was realized in #43767 that the msbuild
|
|
// CMake generator for MSVC doesn't respect configuration options like
|
|
// disabling LLVM assertions, which can often be quite important!
|
|
//
|
|
// In these cases we automatically enable Ninja if we find it in the
|
|
// environment.
|
|
if !self.config.ninja_in_file
|
|
&& self.config.build.contains("msvc")
|
|
&& cmd_finder.maybe_have("ninja").is_some()
|
|
{
|
|
return true;
|
|
}
|
|
|
|
self.config.ninja_in_file
|
|
}
|
|
|
|
pub fn colored_stdout<R, F: FnOnce(&mut dyn WriteColor) -> R>(&self, f: F) -> R {
|
|
self.colored_stream_inner(StandardStream::stdout, self.config.stdout_is_tty, f)
|
|
}
|
|
|
|
pub fn colored_stderr<R, F: FnOnce(&mut dyn WriteColor) -> R>(&self, f: F) -> R {
|
|
self.colored_stream_inner(StandardStream::stderr, self.config.stderr_is_tty, f)
|
|
}
|
|
|
|
fn colored_stream_inner<R, F, C>(&self, constructor: C, is_tty: bool, f: F) -> R
|
|
where
|
|
C: Fn(ColorChoice) -> StandardStream,
|
|
F: FnOnce(&mut dyn WriteColor) -> R,
|
|
{
|
|
let choice = match self.config.color {
|
|
flags::Color::Always => ColorChoice::Always,
|
|
flags::Color::Never => ColorChoice::Never,
|
|
flags::Color::Auto if !is_tty => ColorChoice::Never,
|
|
flags::Color::Auto => ColorChoice::Auto,
|
|
};
|
|
let mut stream = constructor(choice);
|
|
let result = f(&mut stream);
|
|
stream.reset().unwrap();
|
|
result
|
|
}
|
|
}
|
|
|
|
/// Extract the beta revision from the full version string.
|
|
///
|
|
/// The full version string looks like "a.b.c-beta.y". And we need to extract
|
|
/// the "y" part from the string.
|
|
pub fn extract_beta_rev(version: &str) -> Option<String> {
|
|
let parts = version.splitn(2, "-beta.").collect::<Vec<_>>();
|
|
let count = parts.get(1).and_then(|s| s.find(' ').map(|p| (&s[..p]).to_string()));
|
|
|
|
count
|
|
}
|
|
|
|
#[cfg(unix)]
|
|
fn chmod(path: &Path, perms: u32) {
|
|
use std::os::unix::fs::*;
|
|
t!(fs::set_permissions(path, fs::Permissions::from_mode(perms)));
|
|
}
|
|
#[cfg(windows)]
|
|
fn chmod(_path: &Path, _perms: u32) {}
|
|
|
|
impl Compiler {
|
|
pub fn with_stage(mut self, stage: u32) -> Compiler {
|
|
self.stage = stage;
|
|
self
|
|
}
|
|
|
|
/// Returns `true` if 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
|
|
}
|
|
}
|
|
|
|
fn envify(s: &str) -> String {
|
|
s.chars()
|
|
.map(|c| match c {
|
|
'-' => '_',
|
|
c => c,
|
|
})
|
|
.flat_map(|c| c.to_uppercase())
|
|
.collect()
|
|
}
|