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Diffstat (limited to 'src/bootstrap/install.rs')
-rw-r--r-- | src/bootstrap/install.rs | 292 |
1 files changed, 292 insertions, 0 deletions
diff --git a/src/bootstrap/install.rs b/src/bootstrap/install.rs new file mode 100644 index 000000000..6e49f39ff --- /dev/null +++ b/src/bootstrap/install.rs @@ -0,0 +1,292 @@ +//! Implementation of the install aspects of the compiler. +//! +//! This module is responsible for installing the standard library, +//! compiler, and documentation. + +use std::env; +use std::fs; +use std::path::{Component, Path, PathBuf}; +use std::process::Command; + +use crate::util::t; + +use crate::dist; +use crate::tarball::GeneratedTarball; +use crate::Compiler; + +use crate::builder::{Builder, RunConfig, ShouldRun, Step}; +use crate::config::{Config, TargetSelection}; + +#[cfg(target_os = "illumos")] +const SHELL: &str = "bash"; +#[cfg(not(target_os = "illumos"))] +const SHELL: &str = "sh"; + +// We have to run a few shell scripts, which choke quite a bit on both `\` +// characters and on `C:\` paths, so normalize both of them away. +fn sanitize_sh(path: &Path) -> String { + let path = path.to_str().unwrap().replace("\\", "/"); + return change_drive(unc_to_lfs(&path)).unwrap_or(path); + + fn unc_to_lfs(s: &str) -> &str { + s.strip_prefix("//?/").unwrap_or(s) + } + + fn change_drive(s: &str) -> Option<String> { + let mut ch = s.chars(); + let drive = ch.next().unwrap_or('C'); + if ch.next() != Some(':') { + return None; + } + if ch.next() != Some('/') { + return None; + } + Some(format!("/{}/{}", drive, &s[drive.len_utf8() + 2..])) + } +} + +fn install_sh( + builder: &Builder<'_>, + package: &str, + stage: u32, + host: Option<TargetSelection>, + tarball: &GeneratedTarball, +) { + builder.info(&format!("Install {} stage{} ({:?})", package, stage, host)); + + let prefix = default_path(&builder.config.prefix, "/usr/local"); + let sysconfdir = prefix.join(default_path(&builder.config.sysconfdir, "/etc")); + let datadir = prefix.join(default_path(&builder.config.datadir, "share")); + let docdir = prefix.join(default_path(&builder.config.docdir, "share/doc/rust")); + let mandir = prefix.join(default_path(&builder.config.mandir, "share/man")); + let libdir = prefix.join(default_path(&builder.config.libdir, "lib")); + let bindir = prefix.join(&builder.config.bindir); // Default in config.rs + + let empty_dir = builder.out.join("tmp/empty_dir"); + t!(fs::create_dir_all(&empty_dir)); + + let mut cmd = Command::new(SHELL); + cmd.current_dir(&empty_dir) + .arg(sanitize_sh(&tarball.decompressed_output().join("install.sh"))) + .arg(format!("--prefix={}", prepare_dir(prefix))) + .arg(format!("--sysconfdir={}", prepare_dir(sysconfdir))) + .arg(format!("--datadir={}", prepare_dir(datadir))) + .arg(format!("--docdir={}", prepare_dir(docdir))) + .arg(format!("--bindir={}", prepare_dir(bindir))) + .arg(format!("--libdir={}", prepare_dir(libdir))) + .arg(format!("--mandir={}", prepare_dir(mandir))) + .arg("--disable-ldconfig"); + builder.run(&mut cmd); + t!(fs::remove_dir_all(&empty_dir)); +} + +fn default_path(config: &Option<PathBuf>, default: &str) -> PathBuf { + config.as_ref().cloned().unwrap_or_else(|| PathBuf::from(default)) +} + +fn prepare_dir(mut path: PathBuf) -> String { + // The DESTDIR environment variable is a standard way to install software in a subdirectory + // while keeping the original directory structure, even if the prefix or other directories + // contain absolute paths. + // + // More information on the environment variable is available here: + // https://www.gnu.org/prep/standards/html_node/DESTDIR.html + if let Some(destdir) = env::var_os("DESTDIR").map(PathBuf::from) { + let without_destdir = path.clone(); + path = destdir; + // Custom .join() which ignores disk roots. + for part in without_destdir.components() { + if let Component::Normal(s) = part { + path.push(s) + } + } + } + + // The installation command is not executed from the current directory, but from a temporary + // directory. To prevent relative paths from breaking this converts relative paths to absolute + // paths. std::fs::canonicalize is not used as that requires the path to actually be present. + if path.is_relative() { + path = std::env::current_dir().expect("failed to get the current directory").join(path); + assert!(path.is_absolute(), "could not make the path relative"); + } + + sanitize_sh(&path) +} + +macro_rules! install { + (($sel:ident, $builder:ident, $_config:ident), + $($name:ident, + $condition_name: ident = $path_or_alias: literal, + $default_cond:expr, + only_hosts: $only_hosts:expr, + $run_item:block $(, $c:ident)*;)+) => { + $( + #[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)] + pub struct $name { + pub compiler: Compiler, + pub target: TargetSelection, + } + + impl $name { + #[allow(dead_code)] + fn should_build(config: &Config) -> bool { + config.extended && config.tools.as_ref() + .map_or(true, |t| t.contains($path_or_alias)) + } + } + + impl Step for $name { + type Output = (); + const DEFAULT: bool = true; + const ONLY_HOSTS: bool = $only_hosts; + $(const $c: bool = true;)* + + fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> { + let $_config = &run.builder.config; + run.$condition_name($path_or_alias).default_condition($default_cond) + } + + fn make_run(run: RunConfig<'_>) { + run.builder.ensure($name { + compiler: run.builder.compiler(run.builder.top_stage, run.builder.config.build), + target: run.target, + }); + } + + fn run($sel, $builder: &Builder<'_>) { + $run_item + } + })+ + } +} + +install!((self, builder, _config), + Docs, path = "src/doc", _config.docs, only_hosts: false, { + let tarball = builder.ensure(dist::Docs { host: self.target }).expect("missing docs"); + install_sh(builder, "docs", self.compiler.stage, Some(self.target), &tarball); + }; + Std, path = "library/std", true, only_hosts: false, { + for target in &builder.targets { + // `expect` should be safe, only None when host != build, but this + // only runs when host == build + let tarball = builder.ensure(dist::Std { + compiler: self.compiler, + target: *target + }).expect("missing std"); + install_sh(builder, "std", self.compiler.stage, Some(*target), &tarball); + } + }; + Cargo, alias = "cargo", Self::should_build(_config), only_hosts: true, { + let tarball = builder + .ensure(dist::Cargo { compiler: self.compiler, target: self.target }) + .expect("missing cargo"); + install_sh(builder, "cargo", self.compiler.stage, Some(self.target), &tarball); + }; + Rls, alias = "rls", Self::should_build(_config), only_hosts: true, { + if let Some(tarball) = builder.ensure(dist::Rls { compiler: self.compiler, target: self.target }) { + install_sh(builder, "rls", self.compiler.stage, Some(self.target), &tarball); + } else { + builder.info( + &format!("skipping Install RLS stage{} ({})", self.compiler.stage, self.target), + ); + } + }; + RustAnalyzer, alias = "rust-analyzer", Self::should_build(_config), only_hosts: true, { + if let Some(tarball) = + builder.ensure(dist::RustAnalyzer { compiler: self.compiler, target: self.target }) + { + install_sh(builder, "rust-analyzer", self.compiler.stage, Some(self.target), &tarball); + } else { + builder.info( + &format!("skipping Install rust-analyzer stage{} ({})", self.compiler.stage, self.target), + ); + } + }; + Clippy, alias = "clippy", Self::should_build(_config), only_hosts: true, { + let tarball = builder + .ensure(dist::Clippy { compiler: self.compiler, target: self.target }) + .expect("missing clippy"); + install_sh(builder, "clippy", self.compiler.stage, Some(self.target), &tarball); + }; + Miri, alias = "miri", Self::should_build(_config), only_hosts: true, { + if let Some(tarball) = builder.ensure(dist::Miri { compiler: self.compiler, target: self.target }) { + install_sh(builder, "miri", self.compiler.stage, Some(self.target), &tarball); + } else { + builder.info( + &format!("skipping Install miri stage{} ({})", self.compiler.stage, self.target), + ); + } + }; + Rustfmt, alias = "rustfmt", Self::should_build(_config), only_hosts: true, { + if let Some(tarball) = builder.ensure(dist::Rustfmt { + compiler: self.compiler, + target: self.target + }) { + install_sh(builder, "rustfmt", self.compiler.stage, Some(self.target), &tarball); + } else { + builder.info( + &format!("skipping Install Rustfmt stage{} ({})", self.compiler.stage, self.target), + ); + } + }; + RustDemangler, alias = "rust-demangler", Self::should_build(_config), only_hosts: true, { + // Note: Even though `should_build` may return true for `extended` default tools, + // dist::RustDemangler may still return None, unless the target-dependent `profiler` config + // is also true, or the `tools` array explicitly includes "rust-demangler". + if let Some(tarball) = builder.ensure(dist::RustDemangler { + compiler: self.compiler, + target: self.target + }) { + install_sh(builder, "rust-demangler", self.compiler.stage, Some(self.target), &tarball); + } else { + builder.info( + &format!("skipping Install RustDemangler stage{} ({})", + self.compiler.stage, self.target), + ); + } + }; + Analysis, alias = "analysis", Self::should_build(_config), only_hosts: false, { + // `expect` should be safe, only None with host != build, but this + // only uses the `build` compiler + let tarball = builder.ensure(dist::Analysis { + // Find the actual compiler (handling the full bootstrap option) which + // produced the save-analysis data because that data isn't copied + // through the sysroot uplifting. + compiler: builder.compiler_for(builder.top_stage, builder.config.build, self.target), + target: self.target + }).expect("missing analysis"); + install_sh(builder, "analysis", self.compiler.stage, Some(self.target), &tarball); + }; + Rustc, path = "compiler/rustc", true, only_hosts: true, { + let tarball = builder.ensure(dist::Rustc { + compiler: builder.compiler(builder.top_stage, self.target), + }); + install_sh(builder, "rustc", self.compiler.stage, Some(self.target), &tarball); + }; +); + +#[derive(Debug, Copy, Clone, Hash, PartialEq, Eq)] +pub struct Src { + pub stage: u32, +} + +impl Step for Src { + type Output = (); + const DEFAULT: bool = true; + const ONLY_HOSTS: bool = true; + + fn should_run(run: ShouldRun<'_>) -> ShouldRun<'_> { + let config = &run.builder.config; + let cond = config.extended && config.tools.as_ref().map_or(true, |t| t.contains("src")); + run.path("src").default_condition(cond) + } + + fn make_run(run: RunConfig<'_>) { + run.builder.ensure(Src { stage: run.builder.top_stage }); + } + + fn run(self, builder: &Builder<'_>) { + let tarball = builder.ensure(dist::Src); + install_sh(builder, "src", self.stage, None, &tarball); + } +} |