953 lines
35 KiB
Rust
953 lines
35 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 compiling various phases of the compiler and standard
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//! library.
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//!
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//! This module contains some of the real meat in the rustbuild build system
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//! which is where Cargo is used to compiler the standard library, libtest, and
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//! compiler. This module is also responsible for assembling the sysroot as it
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//! goes along from the output of the previous stage.
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use std::env;
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use std::fs::{self, File};
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use std::io::BufReader;
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use std::io::prelude::*;
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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 std::cmp::min;
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use build_helper::{output, mtime, up_to_date};
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use filetime::FileTime;
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use serde_json;
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use util::{exe, libdir, is_dylib, copy};
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use {Build, Compiler, Mode};
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use native;
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use tool;
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use cache::{INTERNER, Interned};
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use builder::{Step, RunConfig, ShouldRun, Builder};
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#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
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pub struct Std {
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pub target: Interned<String>,
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pub compiler: Compiler,
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}
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impl Step for Std {
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type Output = ();
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const DEFAULT: bool = true;
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fn should_run(run: ShouldRun) -> ShouldRun {
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run.path("src/libstd").krate("std")
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}
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fn make_run(run: RunConfig) {
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run.builder.ensure(Std {
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compiler: run.builder.compiler(run.builder.top_stage, run.host),
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target: run.target,
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});
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}
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/// Build the standard library.
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///
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/// This will build the standard library for a particular stage of the build
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/// using the `compiler` targeting the `target` architecture. The artifacts
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/// created will also be linked into the sysroot directory.
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fn run(self, builder: &Builder) {
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let build = builder.build;
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let target = self.target;
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let compiler = self.compiler;
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builder.ensure(StartupObjects { compiler, target });
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if build.force_use_stage1(compiler, target) {
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let from = builder.compiler(1, build.build);
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builder.ensure(Std {
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compiler: from,
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target,
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});
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println!("Uplifting stage1 std ({} -> {})", from.host, target);
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// Even if we're not building std this stage, the new sysroot must
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// still contain the musl startup objects.
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if target.contains("musl") && !target.contains("mips") {
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let libdir = builder.sysroot_libdir(compiler, target);
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copy_musl_third_party_objects(build, target, &libdir);
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}
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builder.ensure(StdLink {
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compiler: from,
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target_compiler: compiler,
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target,
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});
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return;
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}
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let _folder = build.fold_output(|| format!("stage{}-std", compiler.stage));
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println!("Building stage{} std artifacts ({} -> {})", compiler.stage,
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&compiler.host, target);
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if target.contains("musl") && !target.contains("mips") {
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let libdir = builder.sysroot_libdir(compiler, target);
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copy_musl_third_party_objects(build, target, &libdir);
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}
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let out_dir = build.cargo_out(compiler, Mode::Libstd, target);
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build.clear_if_dirty(&out_dir, &builder.rustc(compiler));
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let mut cargo = builder.cargo(compiler, Mode::Libstd, target, "build");
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std_cargo(build, &compiler, target, &mut cargo);
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run_cargo(build,
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&mut cargo,
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&libstd_stamp(build, compiler, target));
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builder.ensure(StdLink {
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compiler: builder.compiler(compiler.stage, build.build),
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target_compiler: compiler,
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target,
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});
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}
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}
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/// Copies the crt(1,i,n).o startup objects
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///
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/// Since musl supports fully static linking, we can cross link for it even
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/// with a glibc-targeting toolchain, given we have the appropriate startup
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/// files. As those shipped with glibc won't work, copy the ones provided by
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/// musl so we have them on linux-gnu hosts.
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fn copy_musl_third_party_objects(build: &Build,
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target: Interned<String>,
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into: &Path) {
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for &obj in &["crt1.o", "crti.o", "crtn.o"] {
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copy(&build.musl_root(target).unwrap().join("lib").join(obj), &into.join(obj));
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}
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}
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/// Configure cargo to compile the standard library, adding appropriate env vars
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/// and such.
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pub fn std_cargo(build: &Build,
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compiler: &Compiler,
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target: Interned<String>,
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cargo: &mut Command) {
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let mut features = build.std_features();
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if let Some(target) = env::var_os("MACOSX_STD_DEPLOYMENT_TARGET") {
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cargo.env("MACOSX_DEPLOYMENT_TARGET", target);
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}
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// When doing a local rebuild we tell cargo that we're stage1 rather than
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// stage0. This works fine if the local rust and being-built rust have the
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// same view of what the default allocator is, but fails otherwise. Since
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// we don't have a way to express an allocator preference yet, work
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// around the issue in the case of a local rebuild with jemalloc disabled.
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if compiler.stage == 0 && build.local_rebuild && !build.config.use_jemalloc {
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features.push_str(" force_alloc_system");
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}
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if compiler.stage != 0 && build.config.sanitizers {
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// This variable is used by the sanitizer runtime crates, e.g.
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// rustc_lsan, to build the sanitizer runtime from C code
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// When this variable is missing, those crates won't compile the C code,
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// so we don't set this variable during stage0 where llvm-config is
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// missing
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// We also only build the runtimes when --enable-sanitizers (or its
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// config.toml equivalent) is used
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cargo.env("LLVM_CONFIG", build.llvm_config(target));
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}
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cargo.arg("--features").arg(features)
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.arg("--manifest-path")
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.arg(build.src.join("src/libstd/Cargo.toml"));
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if let Some(target) = build.config.target_config.get(&target) {
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if let Some(ref jemalloc) = target.jemalloc {
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cargo.env("JEMALLOC_OVERRIDE", jemalloc);
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}
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}
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if target.contains("musl") {
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if let Some(p) = build.musl_root(target) {
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cargo.env("MUSL_ROOT", p);
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}
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}
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}
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#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
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struct StdLink {
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pub compiler: Compiler,
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pub target_compiler: Compiler,
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pub target: Interned<String>,
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}
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impl Step for StdLink {
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type Output = ();
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fn should_run(run: ShouldRun) -> ShouldRun {
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run.never()
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}
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/// Link all libstd rlibs/dylibs into the sysroot location.
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///
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/// Links those artifacts generated by `compiler` to a the `stage` compiler's
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/// sysroot for the specified `host` and `target`.
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///
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/// Note that this assumes that `compiler` has already generated the libstd
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/// libraries for `target`, and this method will find them in the relevant
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/// output directory.
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fn run(self, builder: &Builder) {
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let build = builder.build;
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let compiler = self.compiler;
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let target_compiler = self.target_compiler;
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let target = self.target;
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println!("Copying stage{} std from stage{} ({} -> {} / {})",
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target_compiler.stage,
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compiler.stage,
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&compiler.host,
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target_compiler.host,
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target);
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let libdir = builder.sysroot_libdir(target_compiler, target);
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add_to_sysroot(&libdir, &libstd_stamp(build, compiler, target));
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if build.config.sanitizers && compiler.stage != 0 && target == "x86_64-apple-darwin" {
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// The sanitizers are only built in stage1 or above, so the dylibs will
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// be missing in stage0 and causes panic. See the `std()` function above
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// for reason why the sanitizers are not built in stage0.
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copy_apple_sanitizer_dylibs(&build.native_dir(target), "osx", &libdir);
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}
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builder.ensure(tool::CleanTools {
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compiler: target_compiler,
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target,
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mode: Mode::Libstd,
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});
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}
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}
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fn copy_apple_sanitizer_dylibs(native_dir: &Path, platform: &str, into: &Path) {
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for &sanitizer in &["asan", "tsan"] {
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let filename = format!("libclang_rt.{}_{}_dynamic.dylib", sanitizer, platform);
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let mut src_path = native_dir.join(sanitizer);
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src_path.push("build");
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src_path.push("lib");
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src_path.push("darwin");
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src_path.push(&filename);
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copy(&src_path, &into.join(filename));
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}
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}
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#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
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pub struct StartupObjects {
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pub compiler: Compiler,
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pub target: Interned<String>,
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}
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impl Step for StartupObjects {
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type Output = ();
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fn should_run(run: ShouldRun) -> ShouldRun {
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run.path("src/rtstartup")
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}
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fn make_run(run: RunConfig) {
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run.builder.ensure(StartupObjects {
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compiler: run.builder.compiler(run.builder.top_stage, run.host),
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target: run.target,
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});
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}
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/// Build and prepare startup objects like rsbegin.o and rsend.o
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///
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/// These are primarily used on Windows right now for linking executables/dlls.
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/// They don't require any library support as they're just plain old object
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/// files, so we just use the nightly snapshot compiler to always build them (as
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/// no other compilers are guaranteed to be available).
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fn run(self, builder: &Builder) {
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let build = builder.build;
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let for_compiler = self.compiler;
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let target = self.target;
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if !target.contains("pc-windows-gnu") {
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return
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}
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let src_dir = &build.src.join("src/rtstartup");
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let dst_dir = &build.native_dir(target).join("rtstartup");
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let sysroot_dir = &builder.sysroot_libdir(for_compiler, target);
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t!(fs::create_dir_all(dst_dir));
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for file in &["rsbegin", "rsend"] {
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let src_file = &src_dir.join(file.to_string() + ".rs");
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let dst_file = &dst_dir.join(file.to_string() + ".o");
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if !up_to_date(src_file, dst_file) {
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let mut cmd = Command::new(&build.initial_rustc);
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build.run(cmd.env("RUSTC_BOOTSTRAP", "1")
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.arg("--cfg").arg("stage0")
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.arg("--target").arg(target)
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.arg("--emit=obj")
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.arg("-o").arg(dst_file)
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.arg(src_file));
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}
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copy(dst_file, &sysroot_dir.join(file.to_string() + ".o"));
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}
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for obj in ["crt2.o", "dllcrt2.o"].iter() {
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copy(&compiler_file(build.cc(target), obj), &sysroot_dir.join(obj));
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}
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}
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}
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#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
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pub struct Test {
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pub compiler: Compiler,
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pub target: Interned<String>,
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}
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impl Step for Test {
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type Output = ();
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const DEFAULT: bool = true;
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fn should_run(run: ShouldRun) -> ShouldRun {
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run.path("src/libtest").krate("test")
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}
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fn make_run(run: RunConfig) {
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run.builder.ensure(Test {
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compiler: run.builder.compiler(run.builder.top_stage, run.host),
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target: run.target,
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});
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}
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/// Build libtest.
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///
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/// This will build libtest and supporting libraries for a particular stage of
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/// the build using the `compiler` targeting the `target` architecture. The
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/// artifacts created will also be linked into the sysroot directory.
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fn run(self, builder: &Builder) {
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let build = builder.build;
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let target = self.target;
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let compiler = self.compiler;
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builder.ensure(Std { compiler, target });
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if build.force_use_stage1(compiler, target) {
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builder.ensure(Test {
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compiler: builder.compiler(1, build.build),
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target,
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});
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println!("Uplifting stage1 test ({} -> {})", &build.build, target);
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builder.ensure(TestLink {
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compiler: builder.compiler(1, build.build),
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target_compiler: compiler,
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target,
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});
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return;
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}
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let _folder = build.fold_output(|| format!("stage{}-test", compiler.stage));
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println!("Building stage{} test artifacts ({} -> {})", compiler.stage,
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&compiler.host, target);
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let out_dir = build.cargo_out(compiler, Mode::Libtest, target);
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build.clear_if_dirty(&out_dir, &libstd_stamp(build, compiler, target));
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let mut cargo = builder.cargo(compiler, Mode::Libtest, target, "build");
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test_cargo(build, &compiler, target, &mut cargo);
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run_cargo(build,
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&mut cargo,
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&libtest_stamp(build, compiler, target));
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builder.ensure(TestLink {
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compiler: builder.compiler(compiler.stage, build.build),
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target_compiler: compiler,
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target,
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});
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}
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}
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/// Same as `std_cargo`, but for libtest
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pub fn test_cargo(build: &Build,
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_compiler: &Compiler,
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_target: Interned<String>,
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cargo: &mut Command) {
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if let Some(target) = env::var_os("MACOSX_STD_DEPLOYMENT_TARGET") {
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cargo.env("MACOSX_DEPLOYMENT_TARGET", target);
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}
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cargo.arg("--manifest-path")
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.arg(build.src.join("src/libtest/Cargo.toml"));
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}
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#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
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pub struct TestLink {
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pub compiler: Compiler,
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pub target_compiler: Compiler,
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pub target: Interned<String>,
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}
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impl Step for TestLink {
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type Output = ();
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fn should_run(run: ShouldRun) -> ShouldRun {
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run.never()
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}
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/// Same as `std_link`, only for libtest
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fn run(self, builder: &Builder) {
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let build = builder.build;
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let compiler = self.compiler;
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let target_compiler = self.target_compiler;
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let target = self.target;
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println!("Copying stage{} test from stage{} ({} -> {} / {})",
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target_compiler.stage,
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compiler.stage,
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&compiler.host,
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target_compiler.host,
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target);
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add_to_sysroot(&builder.sysroot_libdir(target_compiler, target),
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&libtest_stamp(build, compiler, target));
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builder.ensure(tool::CleanTools {
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compiler: target_compiler,
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target,
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mode: Mode::Libtest,
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});
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}
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}
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#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
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pub struct Rustc {
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pub compiler: Compiler,
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pub target: Interned<String>,
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}
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impl Step for Rustc {
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type Output = ();
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const ONLY_HOSTS: bool = true;
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const DEFAULT: bool = true;
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fn should_run(run: ShouldRun) -> ShouldRun {
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run.path("src/librustc").krate("rustc-main")
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}
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fn make_run(run: RunConfig) {
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run.builder.ensure(Rustc {
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compiler: run.builder.compiler(run.builder.top_stage, run.host),
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target: run.target,
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});
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}
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/// Build the compiler.
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///
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/// This will build the compiler for a particular stage of the build using
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/// the `compiler` targeting the `target` architecture. The artifacts
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/// created will also be linked into the sysroot directory.
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fn run(self, builder: &Builder) {
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let build = builder.build;
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let compiler = self.compiler;
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let target = self.target;
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builder.ensure(Test { compiler, target });
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// Build LLVM for our target. This will implicitly build the host LLVM
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// if necessary.
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builder.ensure(native::Llvm { target });
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if build.force_use_stage1(compiler, target) {
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builder.ensure(Rustc {
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compiler: builder.compiler(1, build.build),
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target,
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});
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println!("Uplifting stage1 rustc ({} -> {})", &build.build, target);
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builder.ensure(RustcLink {
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compiler: builder.compiler(1, build.build),
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target_compiler: compiler,
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target,
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});
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return;
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}
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// Ensure that build scripts have a std to link against.
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builder.ensure(Std {
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compiler: builder.compiler(self.compiler.stage, build.build),
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target: build.build,
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});
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let _folder = build.fold_output(|| format!("stage{}-rustc", compiler.stage));
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println!("Building stage{} compiler artifacts ({} -> {})",
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compiler.stage, &compiler.host, target);
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let out_dir = build.cargo_out(compiler, Mode::Librustc, target);
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build.clear_if_dirty(&out_dir, &libtest_stamp(build, compiler, target));
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let mut cargo = builder.cargo(compiler, Mode::Librustc, target, "build");
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rustc_cargo(build, &compiler, target, &mut cargo);
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run_cargo(build,
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&mut cargo,
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&librustc_stamp(build, compiler, target));
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builder.ensure(RustcLink {
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compiler: builder.compiler(compiler.stage, build.build),
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target_compiler: compiler,
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target,
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});
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}
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}
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|
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/// Same as `std_cargo`, but for libtest
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pub fn rustc_cargo(build: &Build,
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compiler: &Compiler,
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target: Interned<String>,
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cargo: &mut Command) {
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|
cargo.arg("--features").arg(build.rustc_features())
|
|
.arg("--manifest-path")
|
|
.arg(build.src.join("src/rustc/Cargo.toml"));
|
|
|
|
// Set some configuration variables picked up by build scripts and
|
|
// the compiler alike
|
|
cargo.env("CFG_RELEASE", build.rust_release())
|
|
.env("CFG_RELEASE_CHANNEL", &build.config.channel)
|
|
.env("CFG_VERSION", build.rust_version())
|
|
.env("CFG_PREFIX", build.config.prefix.clone().unwrap_or_default());
|
|
|
|
if compiler.stage == 0 {
|
|
cargo.env("CFG_LIBDIR_RELATIVE", "lib");
|
|
} else {
|
|
let libdir_relative =
|
|
build.config.libdir_relative.clone().unwrap_or(PathBuf::from("lib"));
|
|
cargo.env("CFG_LIBDIR_RELATIVE", libdir_relative);
|
|
}
|
|
|
|
// If we're not building a compiler with debugging information then remove
|
|
// these two env vars which would be set otherwise.
|
|
if build.config.rust_debuginfo_only_std {
|
|
cargo.env_remove("RUSTC_DEBUGINFO");
|
|
cargo.env_remove("RUSTC_DEBUGINFO_LINES");
|
|
}
|
|
|
|
if let Some(ref ver_date) = build.rust_info.commit_date() {
|
|
cargo.env("CFG_VER_DATE", ver_date);
|
|
}
|
|
if let Some(ref ver_hash) = build.rust_info.sha() {
|
|
cargo.env("CFG_VER_HASH", ver_hash);
|
|
}
|
|
if !build.unstable_features() {
|
|
cargo.env("CFG_DISABLE_UNSTABLE_FEATURES", "1");
|
|
}
|
|
// Flag that rust llvm is in use
|
|
if build.is_rust_llvm(target) {
|
|
cargo.env("LLVM_RUSTLLVM", "1");
|
|
}
|
|
cargo.env("LLVM_CONFIG", build.llvm_config(target));
|
|
let target_config = build.config.target_config.get(&target);
|
|
if let Some(s) = target_config.and_then(|c| c.llvm_config.as_ref()) {
|
|
cargo.env("CFG_LLVM_ROOT", s);
|
|
}
|
|
// Building with a static libstdc++ is only supported on linux right now,
|
|
// not for MSVC or macOS
|
|
if build.config.llvm_static_stdcpp &&
|
|
!target.contains("windows") &&
|
|
!target.contains("apple") {
|
|
cargo.env("LLVM_STATIC_STDCPP",
|
|
compiler_file(build.cxx(target).unwrap(), "libstdc++.a"));
|
|
}
|
|
if build.config.llvm_link_shared {
|
|
cargo.env("LLVM_LINK_SHARED", "1");
|
|
}
|
|
if let Some(ref s) = build.config.rustc_default_linker {
|
|
cargo.env("CFG_DEFAULT_LINKER", s);
|
|
}
|
|
if let Some(ref s) = build.config.rustc_default_ar {
|
|
cargo.env("CFG_DEFAULT_AR", s);
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
|
|
struct RustcLink {
|
|
pub compiler: Compiler,
|
|
pub target_compiler: Compiler,
|
|
pub target: Interned<String>,
|
|
}
|
|
|
|
impl Step for RustcLink {
|
|
type Output = ();
|
|
|
|
fn should_run(run: ShouldRun) -> ShouldRun {
|
|
run.never()
|
|
}
|
|
|
|
/// Same as `std_link`, only for librustc
|
|
fn run(self, builder: &Builder) {
|
|
let build = builder.build;
|
|
let compiler = self.compiler;
|
|
let target_compiler = self.target_compiler;
|
|
let target = self.target;
|
|
println!("Copying stage{} rustc from stage{} ({} -> {} / {})",
|
|
target_compiler.stage,
|
|
compiler.stage,
|
|
&compiler.host,
|
|
target_compiler.host,
|
|
target);
|
|
add_to_sysroot(&builder.sysroot_libdir(target_compiler, target),
|
|
&librustc_stamp(build, compiler, target));
|
|
builder.ensure(tool::CleanTools {
|
|
compiler: target_compiler,
|
|
target,
|
|
mode: Mode::Librustc,
|
|
});
|
|
}
|
|
}
|
|
|
|
/// Cargo's output path for the standard library in a given stage, compiled
|
|
/// by a particular compiler for the specified target.
|
|
pub fn libstd_stamp(build: &Build, compiler: Compiler, target: Interned<String>) -> PathBuf {
|
|
build.cargo_out(compiler, Mode::Libstd, target).join(".libstd.stamp")
|
|
}
|
|
|
|
/// Cargo's output path for libtest in a given stage, compiled by a particular
|
|
/// compiler for the specified target.
|
|
pub fn libtest_stamp(build: &Build, compiler: Compiler, target: Interned<String>) -> PathBuf {
|
|
build.cargo_out(compiler, Mode::Libtest, target).join(".libtest.stamp")
|
|
}
|
|
|
|
/// Cargo's output path for librustc in a given stage, compiled by a particular
|
|
/// compiler for the specified target.
|
|
pub fn librustc_stamp(build: &Build, compiler: Compiler, target: Interned<String>) -> PathBuf {
|
|
build.cargo_out(compiler, Mode::Librustc, target).join(".librustc.stamp")
|
|
}
|
|
|
|
fn compiler_file(compiler: &Path, file: &str) -> PathBuf {
|
|
let out = output(Command::new(compiler)
|
|
.arg(format!("-print-file-name={}", file)));
|
|
PathBuf::from(out.trim())
|
|
}
|
|
|
|
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
|
|
pub struct Sysroot {
|
|
pub compiler: Compiler,
|
|
}
|
|
|
|
impl Step for Sysroot {
|
|
type Output = Interned<PathBuf>;
|
|
|
|
fn should_run(run: ShouldRun) -> ShouldRun {
|
|
run.never()
|
|
}
|
|
|
|
/// Returns the sysroot for the `compiler` specified that *this build system
|
|
/// generates*.
|
|
///
|
|
/// That is, the sysroot for the stage0 compiler is not what the compiler
|
|
/// thinks it is by default, but it's the same as the default for stages
|
|
/// 1-3.
|
|
fn run(self, builder: &Builder) -> Interned<PathBuf> {
|
|
let build = builder.build;
|
|
let compiler = self.compiler;
|
|
let sysroot = if compiler.stage == 0 {
|
|
build.out.join(&compiler.host).join("stage0-sysroot")
|
|
} else {
|
|
build.out.join(&compiler.host).join(format!("stage{}", compiler.stage))
|
|
};
|
|
let _ = fs::remove_dir_all(&sysroot);
|
|
t!(fs::create_dir_all(&sysroot));
|
|
INTERNER.intern_path(sysroot)
|
|
}
|
|
}
|
|
|
|
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)]
|
|
pub struct Assemble {
|
|
/// The compiler which we will produce in this step. Assemble itself will
|
|
/// take care of ensuring that the necessary prerequisites to do so exist,
|
|
/// that is, this target can be a stage2 compiler and Assemble will build
|
|
/// previous stages for you.
|
|
pub target_compiler: Compiler,
|
|
}
|
|
|
|
impl Step for Assemble {
|
|
type Output = Compiler;
|
|
|
|
fn should_run(run: ShouldRun) -> ShouldRun {
|
|
run.path("src/rustc")
|
|
}
|
|
|
|
/// Prepare a new compiler from the artifacts in `stage`
|
|
///
|
|
/// This will assemble a compiler in `build/$host/stage$stage`. The compiler
|
|
/// must have been previously produced by the `stage - 1` build.build
|
|
/// compiler.
|
|
fn run(self, builder: &Builder) -> Compiler {
|
|
let build = builder.build;
|
|
let target_compiler = self.target_compiler;
|
|
|
|
if target_compiler.stage == 0 {
|
|
assert_eq!(build.build, target_compiler.host,
|
|
"Cannot obtain compiler for non-native build triple at stage 0");
|
|
// The stage 0 compiler for the build triple is always pre-built.
|
|
return target_compiler;
|
|
}
|
|
|
|
// Get the compiler that we'll use to bootstrap ourselves.
|
|
let build_compiler = if target_compiler.host != build.build {
|
|
// Build a compiler for the host platform. We cannot use the stage0
|
|
// compiler for the host platform for this because it doesn't have
|
|
// the libraries we need. FIXME: Perhaps we should download those
|
|
// libraries? It would make builds faster...
|
|
// FIXME: It may be faster if we build just a stage 1
|
|
// compiler and then use that to bootstrap this compiler
|
|
// forward.
|
|
builder.compiler(target_compiler.stage - 1, build.build)
|
|
} else {
|
|
// Build the compiler we'll use to build the stage requested. This
|
|
// may build more than one compiler (going down to stage 0).
|
|
builder.compiler(target_compiler.stage - 1, target_compiler.host)
|
|
};
|
|
|
|
// Build the libraries for this compiler to link to (i.e., the libraries
|
|
// it uses at runtime). NOTE: Crates the target compiler compiles don't
|
|
// link to these. (FIXME: Is that correct? It seems to be correct most
|
|
// of the time but I think we do link to these for stage2/bin compilers
|
|
// when not performing a full bootstrap).
|
|
if builder.build.config.keep_stage.map_or(false, |s| target_compiler.stage <= s) {
|
|
builder.verbose("skipping compilation of compiler due to --keep-stage");
|
|
let compiler = build_compiler;
|
|
for stage in 0..min(target_compiler.stage, builder.config.keep_stage.unwrap()) {
|
|
let target_compiler = builder.compiler(stage, target_compiler.host);
|
|
let target = target_compiler.host;
|
|
builder.ensure(StdLink { compiler, target_compiler, target });
|
|
builder.ensure(TestLink { compiler, target_compiler, target });
|
|
builder.ensure(RustcLink { compiler, target_compiler, target });
|
|
}
|
|
} else {
|
|
builder.ensure(Rustc { compiler: build_compiler, target: target_compiler.host });
|
|
}
|
|
|
|
let stage = target_compiler.stage;
|
|
let host = target_compiler.host;
|
|
println!("Assembling stage{} compiler ({})", stage, host);
|
|
|
|
// Link in all dylibs to the libdir
|
|
let sysroot = builder.sysroot(target_compiler);
|
|
let sysroot_libdir = sysroot.join(libdir(&*host));
|
|
t!(fs::create_dir_all(&sysroot_libdir));
|
|
let src_libdir = builder.sysroot_libdir(build_compiler, host);
|
|
for f in t!(fs::read_dir(&src_libdir)).map(|f| t!(f)) {
|
|
let filename = f.file_name().into_string().unwrap();
|
|
if is_dylib(&filename) {
|
|
copy(&f.path(), &sysroot_libdir.join(&filename));
|
|
}
|
|
}
|
|
|
|
let out_dir = build.cargo_out(build_compiler, Mode::Librustc, host);
|
|
|
|
// Link the compiler binary itself into place
|
|
let rustc = out_dir.join(exe("rustc", &*host));
|
|
let bindir = sysroot.join("bin");
|
|
t!(fs::create_dir_all(&bindir));
|
|
let compiler = builder.rustc(target_compiler);
|
|
let _ = fs::remove_file(&compiler);
|
|
copy(&rustc, &compiler);
|
|
|
|
target_compiler
|
|
}
|
|
}
|
|
|
|
/// Link some files into a rustc sysroot.
|
|
///
|
|
/// For a particular stage this will link the file listed in `stamp` into the
|
|
/// `sysroot_dst` provided.
|
|
fn add_to_sysroot(sysroot_dst: &Path, stamp: &Path) {
|
|
t!(fs::create_dir_all(&sysroot_dst));
|
|
let mut contents = Vec::new();
|
|
t!(t!(File::open(stamp)).read_to_end(&mut contents));
|
|
// This is the method we use for extracting paths from the stamp file passed to us. See
|
|
// run_cargo for more information (in this file).
|
|
for part in contents.split(|b| *b == 0) {
|
|
if part.is_empty() {
|
|
continue
|
|
}
|
|
let path = Path::new(t!(str::from_utf8(part)));
|
|
copy(&path, &sysroot_dst.join(path.file_name().unwrap()));
|
|
}
|
|
}
|
|
|
|
// Avoiding a dependency on winapi to keep compile times down
|
|
#[cfg(unix)]
|
|
fn stderr_isatty() -> bool {
|
|
use libc;
|
|
unsafe { libc::isatty(libc::STDERR_FILENO) != 0 }
|
|
}
|
|
#[cfg(windows)]
|
|
fn stderr_isatty() -> bool {
|
|
type DWORD = u32;
|
|
type BOOL = i32;
|
|
type HANDLE = *mut u8;
|
|
const STD_ERROR_HANDLE: DWORD = -12i32 as DWORD;
|
|
extern "system" {
|
|
fn GetStdHandle(which: DWORD) -> HANDLE;
|
|
fn GetConsoleMode(hConsoleHandle: HANDLE, lpMode: *mut DWORD) -> BOOL;
|
|
}
|
|
unsafe {
|
|
let handle = GetStdHandle(STD_ERROR_HANDLE);
|
|
let mut out = 0;
|
|
GetConsoleMode(handle, &mut out) != 0
|
|
}
|
|
}
|
|
|
|
fn run_cargo(build: &Build, cargo: &mut Command, stamp: &Path) {
|
|
// Instruct Cargo to give us json messages on stdout, critically leaving
|
|
// stderr as piped so we can get those pretty colors.
|
|
cargo.arg("--message-format").arg("json")
|
|
.stdout(Stdio::piped());
|
|
|
|
if stderr_isatty() {
|
|
// since we pass message-format=json to cargo, we need to tell the rustc
|
|
// wrapper to give us colored output if necessary. This is because we
|
|
// only want Cargo's JSON output, not rustcs.
|
|
cargo.env("RUSTC_COLOR", "1");
|
|
}
|
|
|
|
build.verbose(&format!("running: {:?}", cargo));
|
|
let mut child = match cargo.spawn() {
|
|
Ok(child) => child,
|
|
Err(e) => panic!("failed to execute command: {:?}\nerror: {}", cargo, e),
|
|
};
|
|
|
|
// `target_root_dir` looks like $dir/$target/release
|
|
let target_root_dir = stamp.parent().unwrap();
|
|
// `target_deps_dir` looks like $dir/$target/release/deps
|
|
let target_deps_dir = target_root_dir.join("deps");
|
|
// `host_root_dir` looks like $dir/release
|
|
let host_root_dir = target_root_dir.parent().unwrap() // chop off `release`
|
|
.parent().unwrap() // chop off `$target`
|
|
.join(target_root_dir.file_name().unwrap());
|
|
|
|
// Spawn Cargo slurping up its JSON output. We'll start building up the
|
|
// `deps` array of all files it generated along with a `toplevel` array of
|
|
// files we need to probe for later.
|
|
let mut deps = Vec::new();
|
|
let mut toplevel = Vec::new();
|
|
let stdout = BufReader::new(child.stdout.take().unwrap());
|
|
for line in stdout.lines() {
|
|
let line = t!(line);
|
|
let json: serde_json::Value = if line.starts_with("{") {
|
|
t!(serde_json::from_str(&line))
|
|
} else {
|
|
// If this was informational, just print it out and continue
|
|
println!("{}", line);
|
|
continue
|
|
};
|
|
if json["reason"].as_str() != Some("compiler-artifact") {
|
|
continue
|
|
}
|
|
for filename in json["filenames"].as_array().unwrap() {
|
|
let filename = filename.as_str().unwrap();
|
|
// Skip files like executables
|
|
if !filename.ends_with(".rlib") &&
|
|
!filename.ends_with(".lib") &&
|
|
!is_dylib(&filename) {
|
|
continue
|
|
}
|
|
|
|
let filename = Path::new(filename);
|
|
|
|
// If this was an output file in the "host dir" we don't actually
|
|
// worry about it, it's not relevant for us.
|
|
if filename.starts_with(&host_root_dir) {
|
|
continue;
|
|
}
|
|
|
|
// If this was output in the `deps` dir then this is a precise file
|
|
// name (hash included) so we start tracking it.
|
|
if filename.starts_with(&target_deps_dir) {
|
|
deps.push(filename.to_path_buf());
|
|
continue;
|
|
}
|
|
|
|
// Otherwise this was a "top level artifact" which right now doesn't
|
|
// have a hash in the name, but there's a version of this file in
|
|
// the `deps` folder which *does* have a hash in the name. That's
|
|
// the one we'll want to we'll probe for it later.
|
|
toplevel.push((filename.file_stem().unwrap()
|
|
.to_str().unwrap().to_string(),
|
|
filename.extension().unwrap().to_owned()
|
|
.to_str().unwrap().to_string()));
|
|
}
|
|
}
|
|
|
|
// Make sure Cargo actually succeeded after we read all of its stdout.
|
|
let status = t!(child.wait());
|
|
if !status.success() {
|
|
panic!("command did not execute successfully: {:?}\n\
|
|
expected success, got: {}",
|
|
cargo,
|
|
status);
|
|
}
|
|
|
|
// Ok now we need to actually find all the files listed in `toplevel`. We've
|
|
// got a list of prefix/extensions and we basically just need to find the
|
|
// most recent file in the `deps` folder corresponding to each one.
|
|
let contents = t!(target_deps_dir.read_dir())
|
|
.map(|e| t!(e))
|
|
.map(|e| (e.path(), e.file_name().into_string().unwrap(), t!(e.metadata())))
|
|
.collect::<Vec<_>>();
|
|
for (prefix, extension) in toplevel {
|
|
let candidates = contents.iter().filter(|&&(_, ref filename, _)| {
|
|
filename.starts_with(&prefix[..]) &&
|
|
filename[prefix.len()..].starts_with("-") &&
|
|
filename.ends_with(&extension[..])
|
|
});
|
|
let max = candidates.max_by_key(|&&(_, _, ref metadata)| {
|
|
FileTime::from_last_modification_time(metadata)
|
|
});
|
|
let path_to_add = match max {
|
|
Some(triple) => triple.0.to_str().unwrap(),
|
|
None => panic!("no output generated for {:?} {:?}", prefix, extension),
|
|
};
|
|
if is_dylib(path_to_add) {
|
|
let candidate = format!("{}.lib", path_to_add);
|
|
let candidate = PathBuf::from(candidate);
|
|
if candidate.exists() {
|
|
deps.push(candidate);
|
|
}
|
|
}
|
|
deps.push(path_to_add.into());
|
|
}
|
|
|
|
// Now we want to update the contents of the stamp file, if necessary. First
|
|
// we read off the previous contents along with its mtime. If our new
|
|
// contents (the list of files to copy) is different or if any dep's mtime
|
|
// is newer then we rewrite the stamp file.
|
|
deps.sort();
|
|
let mut stamp_contents = Vec::new();
|
|
if let Ok(mut f) = File::open(stamp) {
|
|
t!(f.read_to_end(&mut stamp_contents));
|
|
}
|
|
let stamp_mtime = mtime(&stamp);
|
|
let mut new_contents = Vec::new();
|
|
let mut max = None;
|
|
let mut max_path = None;
|
|
for dep in deps {
|
|
let mtime = mtime(&dep);
|
|
if Some(mtime) > max {
|
|
max = Some(mtime);
|
|
max_path = Some(dep.clone());
|
|
}
|
|
new_contents.extend(dep.to_str().unwrap().as_bytes());
|
|
new_contents.extend(b"\0");
|
|
}
|
|
let max = max.unwrap();
|
|
let max_path = max_path.unwrap();
|
|
if stamp_contents == new_contents && max <= stamp_mtime {
|
|
return
|
|
}
|
|
if max > stamp_mtime {
|
|
build.verbose(&format!("updating {:?} as {:?} changed", stamp, max_path));
|
|
} else {
|
|
build.verbose(&format!("updating {:?} as deps changed", stamp));
|
|
}
|
|
t!(t!(File::create(stamp)).write_all(&new_contents));
|
|
}
|