| // Copyright 2017 The Rust Project Developers. See the COPYRIGHT |
| // file at the top-level directory of this distribution and at |
| // http://rust-lang.org/COPYRIGHT. |
| // |
| // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or |
| // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license |
| // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your |
| // option. This file may not be copied, modified, or distributed |
| // except according to those terms. |
| |
| use std::any::Any; |
| use std::cell::RefCell; |
| use std::collections::BTreeSet; |
| use std::env; |
| use std::fmt::Debug; |
| use std::fs; |
| use std::hash::Hash; |
| use std::ops::Deref; |
| use std::path::{Path, PathBuf}; |
| use std::process::Command; |
| |
| use compile; |
| use install; |
| use dist; |
| use util::{exe, libdir, add_lib_path}; |
| use {Build, Mode}; |
| use cache::{INTERNER, Interned, Cache}; |
| use check; |
| use flags::Subcommand; |
| use doc; |
| use tool; |
| use native; |
| |
| pub use Compiler; |
| |
| pub struct Builder<'a> { |
| pub build: &'a Build, |
| pub top_stage: u32, |
| pub kind: Kind, |
| cache: Cache, |
| stack: RefCell<Vec<Box<Any>>>, |
| } |
| |
| impl<'a> Deref for Builder<'a> { |
| type Target = Build; |
| |
| fn deref(&self) -> &Self::Target { |
| self.build |
| } |
| } |
| |
| pub trait Step: 'static + Clone + Debug + PartialEq + Eq + Hash { |
| /// `PathBuf` when directories are created or to return a `Compiler` once |
| /// it's been assembled. |
| type Output: Clone; |
| |
| const DEFAULT: bool = false; |
| |
| /// Run this rule for all hosts without cross compiling. |
| const ONLY_HOSTS: bool = false; |
| |
| /// Run this rule for all targets, but only with the native host. |
| const ONLY_BUILD_TARGETS: bool = false; |
| |
| /// Only run this step with the build triple as host and target. |
| const ONLY_BUILD: bool = false; |
| |
| /// Primary function to execute this rule. Can call `builder.ensure(...)` |
| /// with other steps to run those. |
| fn run(self, builder: &Builder) -> Self::Output; |
| |
| /// When bootstrap is passed a set of paths, this controls whether this rule |
| /// will execute. However, it does not get called in a "default" context |
| /// when we are not passed any paths; in that case, make_run is called |
| /// directly. |
| fn should_run(run: ShouldRun) -> ShouldRun; |
| |
| /// Build up a "root" rule, either as a default rule or from a path passed |
| /// to us. |
| /// |
| /// When path is `None`, we are executing in a context where no paths were |
| /// passed. When `./x.py build` is run, for example, this rule could get |
| /// called if it is in the correct list below with a path of `None`. |
| fn make_run(_run: RunConfig) { |
| // It is reasonable to not have an implementation of make_run for rules |
| // who do not want to get called from the root context. This means that |
| // they are likely dependencies (e.g., sysroot creation) or similar, and |
| // as such calling them from ./x.py isn't logical. |
| unimplemented!() |
| } |
| } |
| |
| pub struct RunConfig<'a> { |
| pub builder: &'a Builder<'a>, |
| pub host: Interned<String>, |
| pub target: Interned<String>, |
| pub path: Option<&'a Path>, |
| } |
| |
| struct StepDescription { |
| default: bool, |
| only_hosts: bool, |
| only_build_targets: bool, |
| only_build: bool, |
| should_run: fn(ShouldRun) -> ShouldRun, |
| make_run: fn(RunConfig), |
| } |
| |
| impl StepDescription { |
| fn from<S: Step>() -> StepDescription { |
| StepDescription { |
| default: S::DEFAULT, |
| only_hosts: S::ONLY_HOSTS, |
| only_build_targets: S::ONLY_BUILD_TARGETS, |
| only_build: S::ONLY_BUILD, |
| should_run: S::should_run, |
| make_run: S::make_run, |
| } |
| } |
| |
| fn maybe_run(&self, builder: &Builder, path: Option<&Path>) { |
| let build = builder.build; |
| let hosts = if self.only_build_targets || self.only_build { |
| build.build_triple() |
| } else { |
| &build.hosts |
| }; |
| |
| // Determine the targets participating in this rule. |
| let targets = if self.only_hosts { |
| if build.config.run_host_only { |
| &[] |
| } else if self.only_build { |
| build.build_triple() |
| } else { |
| &build.hosts |
| } |
| } else { |
| &build.targets |
| }; |
| |
| for host in hosts { |
| for target in targets { |
| let run = RunConfig { |
| builder, |
| path, |
| host: *host, |
| target: *target, |
| }; |
| (self.make_run)(run); |
| } |
| } |
| } |
| |
| fn run(v: &[StepDescription], builder: &Builder, paths: &[PathBuf]) { |
| let should_runs = v.iter().map(|desc| { |
| (desc.should_run)(ShouldRun::new(builder)) |
| }).collect::<Vec<_>>(); |
| if paths.is_empty() { |
| for (desc, should_run) in v.iter().zip(should_runs) { |
| if desc.default && should_run.is_really_default { |
| desc.maybe_run(builder, None); |
| } |
| } |
| } else { |
| for path in paths { |
| let mut attempted_run = false; |
| for (desc, should_run) in v.iter().zip(&should_runs) { |
| if should_run.run(path) { |
| attempted_run = true; |
| desc.maybe_run(builder, Some(path)); |
| } |
| } |
| |
| if !attempted_run { |
| eprintln!("Warning: no rules matched {}.", path.display()); |
| } |
| } |
| } |
| } |
| } |
| |
| #[derive(Clone)] |
| pub struct ShouldRun<'a> { |
| pub builder: &'a Builder<'a>, |
| // use a BTreeSet to maintain sort order |
| paths: BTreeSet<PathBuf>, |
| |
| // If this is a default rule, this is an additional constraint placed on |
| // it's run. Generally something like compiler docs being enabled. |
| is_really_default: bool, |
| } |
| |
| impl<'a> ShouldRun<'a> { |
| fn new(builder: &'a Builder) -> ShouldRun<'a> { |
| ShouldRun { |
| builder, |
| paths: BTreeSet::new(), |
| is_really_default: true, // by default no additional conditions |
| } |
| } |
| |
| pub fn default_condition(mut self, cond: bool) -> Self { |
| self.is_really_default = cond; |
| self |
| } |
| |
| pub fn krate(mut self, name: &str) -> Self { |
| for (_, krate_path) in self.builder.crates(name) { |
| self.paths.insert(PathBuf::from(krate_path)); |
| } |
| self |
| } |
| |
| pub fn path(mut self, path: &str) -> Self { |
| self.paths.insert(PathBuf::from(path)); |
| self |
| } |
| |
| // allows being more explicit about why should_run in Step returns the value passed to it |
| pub fn never(self) -> ShouldRun<'a> { |
| self |
| } |
| |
| fn run(&self, path: &Path) -> bool { |
| self.paths.iter().any(|p| path.ends_with(p)) |
| } |
| } |
| |
| #[derive(Copy, Clone, PartialEq, Eq, Debug)] |
| pub enum Kind { |
| Build, |
| Test, |
| Bench, |
| Dist, |
| Doc, |
| Install, |
| } |
| |
| impl<'a> Builder<'a> { |
| fn get_step_descriptions(kind: Kind) -> Vec<StepDescription> { |
| macro_rules! describe { |
| ($($rule:ty),+ $(,)*) => {{ |
| vec![$(StepDescription::from::<$rule>()),+] |
| }}; |
| } |
| match kind { |
| Kind::Build => describe!(compile::Std, compile::Test, compile::Rustc, |
| compile::StartupObjects, tool::BuildManifest, tool::Rustbook, tool::ErrorIndex, |
| tool::UnstableBookGen, tool::Tidy, tool::Linkchecker, tool::CargoTest, |
| tool::Compiletest, tool::RemoteTestServer, tool::RemoteTestClient, |
| tool::RustInstaller, tool::Cargo, tool::Rls, tool::Rustdoc, tool::Clippy, |
| native::Llvm, tool::Rustfmt, tool::Miri), |
| Kind::Test => describe!(check::Tidy, check::Bootstrap, check::DefaultCompiletest, |
| check::HostCompiletest, check::Crate, check::CrateLibrustc, check::Rustdoc, |
| check::Linkcheck, check::Cargotest, check::Cargo, check::Rls, check::Docs, |
| check::ErrorIndex, check::Distcheck, check::Rustfmt, check::Miri, check::Clippy), |
| Kind::Bench => describe!(check::Crate, check::CrateLibrustc), |
| Kind::Doc => describe!(doc::UnstableBook, doc::UnstableBookGen, doc::TheBook, |
| doc::Standalone, doc::Std, doc::Test, doc::Rustc, doc::ErrorIndex, doc::Nomicon, |
| doc::Reference, doc::Rustdoc, doc::RustByExample, doc::CargoBook), |
| Kind::Dist => describe!(dist::Docs, dist::Mingw, dist::Rustc, dist::DebuggerScripts, |
| dist::Std, dist::Analysis, dist::Src, dist::PlainSourceTarball, dist::Cargo, |
| dist::Rls, dist::Rustfmt, dist::Extended, dist::HashSign, |
| dist::DontDistWithMiriEnabled), |
| Kind::Install => describe!(install::Docs, install::Std, install::Cargo, install::Rls, |
| install::Rustfmt, install::Analysis, install::Src, install::Rustc), |
| } |
| } |
| |
| pub fn get_help(build: &Build, subcommand: &str) -> Option<String> { |
| let kind = match subcommand { |
| "build" => Kind::Build, |
| "doc" => Kind::Doc, |
| "test" => Kind::Test, |
| "bench" => Kind::Bench, |
| "dist" => Kind::Dist, |
| "install" => Kind::Install, |
| _ => return None, |
| }; |
| |
| let builder = Builder { |
| build, |
| top_stage: build.config.stage.unwrap_or(2), |
| kind, |
| cache: Cache::new(), |
| stack: RefCell::new(Vec::new()), |
| }; |
| |
| let builder = &builder; |
| let mut should_run = ShouldRun::new(builder); |
| for desc in Builder::get_step_descriptions(builder.kind) { |
| should_run = (desc.should_run)(should_run); |
| } |
| let mut help = String::from("Available paths:\n"); |
| for path in should_run.paths { |
| help.push_str(format!(" ./x.py {} {}\n", subcommand, path.display()).as_str()); |
| } |
| Some(help) |
| } |
| |
| pub fn run(build: &Build) { |
| let (kind, paths) = match build.config.cmd { |
| Subcommand::Build { ref paths } => (Kind::Build, &paths[..]), |
| Subcommand::Doc { ref paths } => (Kind::Doc, &paths[..]), |
| Subcommand::Test { ref paths, .. } => (Kind::Test, &paths[..]), |
| Subcommand::Bench { ref paths, .. } => (Kind::Bench, &paths[..]), |
| Subcommand::Dist { ref paths } => (Kind::Dist, &paths[..]), |
| Subcommand::Install { ref paths } => (Kind::Install, &paths[..]), |
| Subcommand::Clean { .. } => panic!(), |
| }; |
| |
| let builder = Builder { |
| build, |
| top_stage: build.config.stage.unwrap_or(2), |
| kind, |
| cache: Cache::new(), |
| stack: RefCell::new(Vec::new()), |
| }; |
| |
| StepDescription::run(&Builder::get_step_descriptions(builder.kind), &builder, paths); |
| } |
| |
| pub fn default_doc(&self, paths: Option<&[PathBuf]>) { |
| let paths = paths.unwrap_or(&[]); |
| StepDescription::run(&Builder::get_step_descriptions(Kind::Doc), self, paths); |
| } |
| |
| /// Obtain a compiler at a given stage and for a given host. Explicitly does |
| /// not take `Compiler` since all `Compiler` instances are meant to be |
| /// obtained through this function, since it ensures that they are valid |
| /// (i.e., built and assembled). |
| pub fn compiler(&self, stage: u32, host: Interned<String>) -> Compiler { |
| self.ensure(compile::Assemble { target_compiler: Compiler { stage, host } }) |
| } |
| |
| pub fn sysroot(&self, compiler: Compiler) -> Interned<PathBuf> { |
| self.ensure(compile::Sysroot { compiler }) |
| } |
| |
| /// Returns the libdir where the standard library and other artifacts are |
| /// found for a compiler's sysroot. |
| pub fn sysroot_libdir( |
| &self, compiler: Compiler, target: Interned<String> |
| ) -> Interned<PathBuf> { |
| #[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)] |
| struct Libdir { |
| compiler: Compiler, |
| target: Interned<String>, |
| } |
| impl Step for Libdir { |
| type Output = Interned<PathBuf>; |
| |
| fn should_run(run: ShouldRun) -> ShouldRun { |
| run.never() |
| } |
| |
| fn run(self, builder: &Builder) -> Interned<PathBuf> { |
| let compiler = self.compiler; |
| let lib = if compiler.stage >= 1 && builder.build.config.libdir.is_some() { |
| builder.build.config.libdir.clone().unwrap() |
| } else { |
| PathBuf::from("lib") |
| }; |
| let sysroot = builder.sysroot(self.compiler).join(lib) |
| .join("rustlib").join(self.target).join("lib"); |
| let _ = fs::remove_dir_all(&sysroot); |
| t!(fs::create_dir_all(&sysroot)); |
| INTERNER.intern_path(sysroot) |
| } |
| } |
| self.ensure(Libdir { compiler, target }) |
| } |
| |
| /// Returns the compiler's libdir where it stores the dynamic libraries that |
| /// it itself links against. |
| /// |
| /// For example this returns `<sysroot>/lib` on Unix and `<sysroot>/bin` on |
| /// Windows. |
| pub fn rustc_libdir(&self, compiler: Compiler) -> PathBuf { |
| if compiler.is_snapshot(self) { |
| self.build.rustc_snapshot_libdir() |
| } else { |
| self.sysroot(compiler).join(libdir(&compiler.host)) |
| } |
| } |
| |
| /// Adds the compiler's directory of dynamic libraries to `cmd`'s dynamic |
| /// library lookup path. |
| pub fn add_rustc_lib_path(&self, compiler: Compiler, cmd: &mut Command) { |
| // Windows doesn't need dylib path munging because the dlls for the |
| // compiler live next to the compiler and the system will find them |
| // automatically. |
| if cfg!(windows) { |
| return |
| } |
| |
| add_lib_path(vec![self.rustc_libdir(compiler)], cmd); |
| } |
| |
| /// Get a path to the compiler specified. |
| pub fn rustc(&self, compiler: Compiler) -> PathBuf { |
| if compiler.is_snapshot(self) { |
| self.initial_rustc.clone() |
| } else { |
| self.sysroot(compiler).join("bin").join(exe("rustc", &compiler.host)) |
| } |
| } |
| |
| pub fn rustdoc(&self, host: Interned<String>) -> PathBuf { |
| self.ensure(tool::Rustdoc { host }) |
| } |
| |
| pub fn rustdoc_cmd(&self, host: Interned<String>) -> Command { |
| let mut cmd = Command::new(&self.out.join("bootstrap/debug/rustdoc")); |
| let compiler = self.compiler(self.top_stage, host); |
| cmd.env("RUSTC_STAGE", compiler.stage.to_string()) |
| .env("RUSTC_SYSROOT", self.sysroot(compiler)) |
| .env("RUSTDOC_LIBDIR", self.sysroot_libdir(compiler, self.build.build)) |
| .env("CFG_RELEASE_CHANNEL", &self.build.config.channel) |
| .env("RUSTDOC_REAL", self.rustdoc(host)) |
| .env("RUSTDOC_CRATE_VERSION", self.build.rust_version()) |
| .env("RUSTC_BOOTSTRAP", "1"); |
| if let Some(linker) = self.build.linker(host) { |
| cmd.env("RUSTC_TARGET_LINKER", linker); |
| } |
| cmd |
| } |
| |
| /// Prepares an invocation of `cargo` to be run. |
| /// |
| /// This will create a `Command` that represents a pending execution of |
| /// Cargo. This cargo will be configured to use `compiler` as the actual |
| /// rustc compiler, its output will be scoped by `mode`'s output directory, |
| /// it will pass the `--target` flag for the specified `target`, and will be |
| /// executing the Cargo command `cmd`. |
| pub fn cargo(&self, |
| compiler: Compiler, |
| mode: Mode, |
| target: Interned<String>, |
| cmd: &str) -> Command { |
| let mut cargo = Command::new(&self.initial_cargo); |
| let out_dir = self.stage_out(compiler, mode); |
| cargo.env("CARGO_TARGET_DIR", out_dir) |
| .arg(cmd) |
| .arg("--target").arg(target); |
| |
| // If we were invoked from `make` then that's already got a jobserver |
| // set up for us so no need to tell Cargo about jobs all over again. |
| if env::var_os("MAKEFLAGS").is_none() && env::var_os("MFLAGS").is_none() { |
| cargo.arg("-j").arg(self.jobs().to_string()); |
| } |
| |
| // FIXME: Temporary fix for https://github.com/rust-lang/cargo/issues/3005 |
| // Force cargo to output binaries with disambiguating hashes in the name |
| cargo.env("__CARGO_DEFAULT_LIB_METADATA", &self.config.channel); |
| |
| let stage; |
| if compiler.stage == 0 && self.local_rebuild { |
| // Assume the local-rebuild rustc already has stage1 features. |
| stage = 1; |
| } else { |
| stage = compiler.stage; |
| } |
| |
| // Customize the compiler we're running. Specify the compiler to cargo |
| // as our shim and then pass it some various options used to configure |
| // how the actual compiler itself is called. |
| // |
| // These variables are primarily all read by |
| // src/bootstrap/bin/{rustc.rs,rustdoc.rs} |
| cargo.env("RUSTBUILD_NATIVE_DIR", self.native_dir(target)) |
| .env("RUSTC", self.out.join("bootstrap/debug/rustc")) |
| .env("RUSTC_REAL", self.rustc(compiler)) |
| .env("RUSTC_STAGE", stage.to_string()) |
| .env("RUSTC_DEBUG_ASSERTIONS", |
| self.config.rust_debug_assertions.to_string()) |
| .env("RUSTC_SYSROOT", self.sysroot(compiler)) |
| .env("RUSTC_LIBDIR", self.rustc_libdir(compiler)) |
| .env("RUSTC_RPATH", self.config.rust_rpath.to_string()) |
| .env("RUSTDOC", self.out.join("bootstrap/debug/rustdoc")) |
| .env("RUSTDOC_REAL", if cmd == "doc" || cmd == "test" { |
| self.rustdoc(compiler.host) |
| } else { |
| PathBuf::from("/path/to/nowhere/rustdoc/not/required") |
| }) |
| .env("TEST_MIRI", self.config.test_miri.to_string()) |
| .env("RUSTC_ERROR_METADATA_DST", self.extended_error_dir()); |
| if let Some(n) = self.config.rust_codegen_units { |
| cargo.env("RUSTC_CODEGEN_UNITS", n.to_string()); |
| } |
| |
| if let Some(host_linker) = self.build.linker(compiler.host) { |
| cargo.env("RUSTC_HOST_LINKER", host_linker); |
| } |
| if let Some(target_linker) = self.build.linker(target) { |
| cargo.env("RUSTC_TARGET_LINKER", target_linker); |
| } |
| if cmd != "build" { |
| cargo.env("RUSTDOC_LIBDIR", self.rustc_libdir(self.compiler(2, self.build.build))); |
| } |
| |
| if mode != Mode::Tool { |
| // Tools don't get debuginfo right now, e.g. cargo and rls don't |
| // get compiled with debuginfo. |
| // Adding debuginfo increases their sizes by a factor of 3-4. |
| cargo.env("RUSTC_DEBUGINFO", self.config.rust_debuginfo.to_string()); |
| cargo.env("RUSTC_DEBUGINFO_LINES", self.config.rust_debuginfo_lines.to_string()); |
| cargo.env("RUSTC_FORCE_UNSTABLE", "1"); |
| |
| // Currently the compiler depends on crates from crates.io, and |
| // then other crates can depend on the compiler (e.g. proc-macro |
| // crates). Let's say, for example that rustc itself depends on the |
| // bitflags crate. If an external crate then depends on the |
| // bitflags crate as well, we need to make sure they don't |
| // conflict, even if they pick the same version of bitflags. We'll |
| // want to make sure that e.g. a plugin and rustc each get their |
| // own copy of bitflags. |
| |
| // Cargo ensures that this works in general through the -C metadata |
| // flag. This flag will frob the symbols in the binary to make sure |
| // they're different, even though the source code is the exact |
| // same. To solve this problem for the compiler we extend Cargo's |
| // already-passed -C metadata flag with our own. Our rustc.rs |
| // wrapper around the actual rustc will detect -C metadata being |
| // passed and frob it with this extra string we're passing in. |
| cargo.env("RUSTC_METADATA_SUFFIX", "rustc"); |
| } |
| |
| if let Some(x) = self.crt_static(target) { |
| cargo.env("RUSTC_CRT_STATIC", x.to_string()); |
| } |
| |
| // Enable usage of unstable features |
| cargo.env("RUSTC_BOOTSTRAP", "1"); |
| self.add_rust_test_threads(&mut cargo); |
| |
| // Almost all of the crates that we compile as part of the bootstrap may |
| // have a build script, including the standard library. To compile a |
| // build script, however, it itself needs a standard library! This |
| // introduces a bit of a pickle when we're compiling the standard |
| // library itself. |
| // |
| // To work around this we actually end up using the snapshot compiler |
| // (stage0) for compiling build scripts of the standard library itself. |
| // The stage0 compiler is guaranteed to have a libstd available for use. |
| // |
| // For other crates, however, we know that we've already got a standard |
| // library up and running, so we can use the normal compiler to compile |
| // build scripts in that situation. |
| // |
| // If LLVM support is disabled we need to use the snapshot compiler to compile |
| // build scripts, as the new compiler doesnt support executables. |
| if mode == Mode::Libstd || !self.build.config.llvm_enabled { |
| cargo.env("RUSTC_SNAPSHOT", &self.initial_rustc) |
| .env("RUSTC_SNAPSHOT_LIBDIR", self.rustc_snapshot_libdir()); |
| } else { |
| cargo.env("RUSTC_SNAPSHOT", self.rustc(compiler)) |
| .env("RUSTC_SNAPSHOT_LIBDIR", self.rustc_libdir(compiler)); |
| } |
| |
| // Ignore incremental modes except for stage0, since we're |
| // not guaranteeing correctness across builds if the compiler |
| // is changing under your feet.` |
| if self.config.incremental && compiler.stage == 0 { |
| let incr_dir = self.incremental_dir(compiler); |
| cargo.env("RUSTC_INCREMENTAL", incr_dir); |
| } |
| |
| if let Some(ref on_fail) = self.config.on_fail { |
| cargo.env("RUSTC_ON_FAIL", on_fail); |
| } |
| |
| cargo.env("RUSTC_VERBOSE", format!("{}", self.verbosity)); |
| |
| // Throughout the build Cargo can execute a number of build scripts |
| // compiling C/C++ code and we need to pass compilers, archivers, flags, etc |
| // obtained previously to those build scripts. |
| // Build scripts use either the `cc` crate or `configure/make` so we pass |
| // the options through environment variables that are fetched and understood by both. |
| // |
| // FIXME: the guard against msvc shouldn't need to be here |
| if !target.contains("msvc") { |
| let cc = self.cc(target); |
| cargo.env(format!("CC_{}", target), cc) |
| .env("CC", cc); |
| |
| let cflags = self.cflags(target).join(" "); |
| cargo.env(format!("CFLAGS_{}", target), cflags.clone()) |
| .env("CFLAGS", cflags.clone()); |
| |
| if let Some(ar) = self.ar(target) { |
| let ranlib = format!("{} s", ar.display()); |
| cargo.env(format!("AR_{}", target), ar) |
| .env("AR", ar) |
| .env(format!("RANLIB_{}", target), ranlib.clone()) |
| .env("RANLIB", ranlib); |
| } |
| |
| if let Ok(cxx) = self.cxx(target) { |
| cargo.env(format!("CXX_{}", target), cxx) |
| .env("CXX", cxx) |
| .env(format!("CXXFLAGS_{}", target), cflags.clone()) |
| .env("CXXFLAGS", cflags); |
| } |
| } |
| |
| if mode == Mode::Libstd && self.config.extended && compiler.is_final_stage(self) { |
| cargo.env("RUSTC_SAVE_ANALYSIS", "api".to_string()); |
| } |
| |
| // For `cargo doc` invocations, make rustdoc print the Rust version into the docs |
| cargo.env("RUSTDOC_CRATE_VERSION", self.build.rust_version()); |
| |
| // Environment variables *required* throughout the build |
| // |
| // FIXME: should update code to not require this env var |
| cargo.env("CFG_COMPILER_HOST_TRIPLE", target); |
| |
| // Set this for all builds to make sure doc builds also get it. |
| cargo.env("CFG_RELEASE_CHANNEL", &self.build.config.channel); |
| |
| if self.is_very_verbose() { |
| cargo.arg("-v"); |
| } |
| if self.config.rust_optimize { |
| // FIXME: cargo bench does not accept `--release` |
| if cmd != "bench" { |
| cargo.arg("--release"); |
| } |
| |
| if self.config.rust_codegen_units.is_none() && |
| self.build.is_rust_llvm(compiler.host) |
| { |
| cargo.env("RUSTC_THINLTO", "1"); |
| } |
| } |
| if self.config.locked_deps { |
| cargo.arg("--locked"); |
| } |
| if self.config.vendor || self.is_sudo { |
| cargo.arg("--frozen"); |
| } |
| |
| self.ci_env.force_coloring_in_ci(&mut cargo); |
| |
| cargo |
| } |
| |
| /// Ensure that a given step is built, returning it's output. This will |
| /// cache the step, so it is safe (and good!) to call this as often as |
| /// needed to ensure that all dependencies are built. |
| pub fn ensure<S: Step>(&'a self, step: S) -> S::Output { |
| { |
| let mut stack = self.stack.borrow_mut(); |
| for stack_step in stack.iter() { |
| // should skip |
| if stack_step.downcast_ref::<S>().map_or(true, |stack_step| *stack_step != step) { |
| continue; |
| } |
| let mut out = String::new(); |
| out += &format!("\n\nCycle in build detected when adding {:?}\n", step); |
| for el in stack.iter().rev() { |
| out += &format!("\t{:?}\n", el); |
| } |
| panic!(out); |
| } |
| if let Some(out) = self.cache.get(&step) { |
| self.build.verbose(&format!("{}c {:?}", " ".repeat(stack.len()), step)); |
| |
| return out; |
| } |
| self.build.verbose(&format!("{}> {:?}", " ".repeat(stack.len()), step)); |
| stack.push(Box::new(step.clone())); |
| } |
| let out = step.clone().run(self); |
| { |
| let mut stack = self.stack.borrow_mut(); |
| let cur_step = stack.pop().expect("step stack empty"); |
| assert_eq!(cur_step.downcast_ref(), Some(&step)); |
| } |
| self.build.verbose(&format!("{}< {:?}", " ".repeat(self.stack.borrow().len()), step)); |
| self.cache.put(step, out.clone()); |
| out |
| } |
| } |
