294 lines
10 KiB
Rust
294 lines
10 KiB
Rust
use std::fs;
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use std::path::{Path, PathBuf};
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use std::process::{self, Command};
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use super::path::{Dirs, RelPath};
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use super::rustc_info::{get_file_name, get_rustc_version, get_toolchain_name};
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use super::utils::{remove_dir_if_exists, spawn_and_wait, try_hard_link, CargoProject, Compiler};
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use super::SysrootKind;
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static DIST_DIR: RelPath = RelPath::DIST;
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static BIN_DIR: RelPath = RelPath::DIST.join("bin");
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static LIB_DIR: RelPath = RelPath::DIST.join("lib");
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pub(crate) fn build_sysroot(
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dirs: &Dirs,
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channel: &str,
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sysroot_kind: SysrootKind,
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cg_clif_dylib_src: &Path,
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bootstrap_host_compiler: &Compiler,
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target_triple: String,
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) -> Compiler {
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eprintln!("[BUILD] sysroot {:?}", sysroot_kind);
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DIST_DIR.ensure_fresh(dirs);
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BIN_DIR.ensure_exists(dirs);
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LIB_DIR.ensure_exists(dirs);
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let is_native = bootstrap_host_compiler.triple == target_triple;
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// Copy the backend
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let cg_clif_dylib_path = if cfg!(windows) {
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// Windows doesn't have rpath support, so the cg_clif dylib needs to be next to the
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// binaries.
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BIN_DIR
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} else {
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LIB_DIR
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}
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.to_path(dirs)
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.join(cg_clif_dylib_src.file_name().unwrap());
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try_hard_link(cg_clif_dylib_src, &cg_clif_dylib_path);
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// Build and copy rustc and cargo wrappers
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let wrapper_base_name = get_file_name("____", "bin");
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let toolchain_name = get_toolchain_name();
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for wrapper in ["rustc-clif", "rustdoc-clif", "cargo-clif"] {
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let wrapper_name = wrapper_base_name.replace("____", wrapper);
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let mut build_cargo_wrapper_cmd = Command::new(&bootstrap_host_compiler.rustc);
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build_cargo_wrapper_cmd
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.env("TOOLCHAIN_NAME", toolchain_name.clone())
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.arg(RelPath::SCRIPTS.to_path(dirs).join(&format!("{wrapper}.rs")))
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.arg("-o")
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.arg(DIST_DIR.to_path(dirs).join(wrapper_name))
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.arg("-Cstrip=debuginfo");
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spawn_and_wait(build_cargo_wrapper_cmd);
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}
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let host = build_sysroot_for_triple(
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dirs,
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channel,
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bootstrap_host_compiler.clone(),
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&cg_clif_dylib_path,
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sysroot_kind,
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);
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host.install_into_sysroot(&DIST_DIR.to_path(dirs));
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if !is_native {
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build_sysroot_for_triple(
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dirs,
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channel,
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{
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let mut bootstrap_target_compiler = bootstrap_host_compiler.clone();
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bootstrap_target_compiler.triple = target_triple.clone();
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bootstrap_target_compiler.set_cross_linker_and_runner();
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bootstrap_target_compiler
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},
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&cg_clif_dylib_path,
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sysroot_kind,
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)
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.install_into_sysroot(&DIST_DIR.to_path(dirs));
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}
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// Copy std for the host to the lib dir. This is necessary for the jit mode to find
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// libstd.
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for lib in host.libs {
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let filename = lib.file_name().unwrap().to_str().unwrap();
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if filename.contains("std-") && !filename.contains(".rlib") {
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try_hard_link(&lib, LIB_DIR.to_path(dirs).join(lib.file_name().unwrap()));
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}
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}
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let mut target_compiler = {
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let dirs: &Dirs = &dirs;
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let rustc_clif =
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RelPath::DIST.to_path(&dirs).join(wrapper_base_name.replace("____", "rustc-clif"));
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let rustdoc_clif =
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RelPath::DIST.to_path(&dirs).join(wrapper_base_name.replace("____", "rustdoc-clif"));
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Compiler {
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cargo: bootstrap_host_compiler.cargo.clone(),
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rustc: rustc_clif.clone(),
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rustdoc: rustdoc_clif.clone(),
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rustflags: String::new(),
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rustdocflags: String::new(),
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triple: target_triple,
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runner: vec![],
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}
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};
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if !is_native {
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target_compiler.set_cross_linker_and_runner();
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}
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target_compiler
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}
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struct SysrootTarget {
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triple: String,
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libs: Vec<PathBuf>,
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}
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impl SysrootTarget {
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fn install_into_sysroot(&self, sysroot: &Path) {
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if self.libs.is_empty() {
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return;
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}
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let target_rustlib_lib = sysroot.join("lib").join("rustlib").join(&self.triple).join("lib");
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fs::create_dir_all(&target_rustlib_lib).unwrap();
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for lib in &self.libs {
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try_hard_link(lib, target_rustlib_lib.join(lib.file_name().unwrap()));
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}
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}
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}
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pub(crate) static ORIG_BUILD_SYSROOT: RelPath = RelPath::SOURCE.join("build_sysroot");
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pub(crate) static BUILD_SYSROOT: RelPath = RelPath::DOWNLOAD.join("sysroot");
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pub(crate) static SYSROOT_RUSTC_VERSION: RelPath = BUILD_SYSROOT.join("rustc_version");
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pub(crate) static SYSROOT_SRC: RelPath = BUILD_SYSROOT.join("sysroot_src");
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pub(crate) static STANDARD_LIBRARY: CargoProject =
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CargoProject::new(&BUILD_SYSROOT, "build_sysroot");
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pub(crate) static RTSTARTUP_SYSROOT: RelPath = RelPath::BUILD.join("rtstartup");
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#[must_use]
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fn build_sysroot_for_triple(
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dirs: &Dirs,
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channel: &str,
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compiler: Compiler,
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cg_clif_dylib_path: &Path,
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sysroot_kind: SysrootKind,
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) -> SysrootTarget {
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match sysroot_kind {
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SysrootKind::None => build_rtstartup(dirs, &compiler)
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.unwrap_or(SysrootTarget { triple: compiler.triple, libs: vec![] }),
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SysrootKind::Llvm => build_llvm_sysroot_for_triple(compiler),
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SysrootKind::Clif => {
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build_clif_sysroot_for_triple(dirs, channel, compiler, &cg_clif_dylib_path)
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}
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}
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}
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#[must_use]
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fn build_llvm_sysroot_for_triple(compiler: Compiler) -> SysrootTarget {
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let default_sysroot = super::rustc_info::get_default_sysroot(&compiler.rustc);
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let mut target_libs = SysrootTarget { triple: compiler.triple, libs: vec![] };
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for entry in fs::read_dir(
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default_sysroot.join("lib").join("rustlib").join(&target_libs.triple).join("lib"),
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)
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.unwrap()
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{
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let entry = entry.unwrap();
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if entry.file_type().unwrap().is_dir() {
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continue;
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}
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let file = entry.path();
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let file_name_str = file.file_name().unwrap().to_str().unwrap();
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if (file_name_str.contains("rustc_")
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&& !file_name_str.contains("rustc_std_workspace_")
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&& !file_name_str.contains("rustc_demangle"))
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|| file_name_str.contains("chalk")
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|| file_name_str.contains("tracing")
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|| file_name_str.contains("regex")
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{
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// These are large crates that are part of the rustc-dev component and are not
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// necessary to run regular programs.
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continue;
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}
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target_libs.libs.push(file);
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}
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target_libs
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}
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#[must_use]
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fn build_clif_sysroot_for_triple(
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dirs: &Dirs,
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channel: &str,
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mut compiler: Compiler,
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cg_clif_dylib_path: &Path,
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) -> SysrootTarget {
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match fs::read_to_string(SYSROOT_RUSTC_VERSION.to_path(dirs)) {
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Err(e) => {
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eprintln!("Failed to get rustc version for patched sysroot source: {}", e);
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eprintln!("Hint: Try `./y.rs prepare` to patch the sysroot source");
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process::exit(1);
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}
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Ok(source_version) => {
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let rustc_version = get_rustc_version(&compiler.rustc);
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if source_version != rustc_version {
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eprintln!("The patched sysroot source is outdated");
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eprintln!("Source version: {}", source_version.trim());
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eprintln!("Rustc version: {}", rustc_version.trim());
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eprintln!("Hint: Try `./y.rs prepare` to update the patched sysroot source");
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process::exit(1);
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}
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}
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}
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let mut target_libs = SysrootTarget { triple: compiler.triple.clone(), libs: vec![] };
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if let Some(rtstartup_target_libs) = build_rtstartup(dirs, &compiler) {
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rtstartup_target_libs.install_into_sysroot(&RTSTARTUP_SYSROOT.to_path(dirs));
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target_libs.libs.extend(rtstartup_target_libs.libs);
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}
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let build_dir = STANDARD_LIBRARY.target_dir(dirs).join(&compiler.triple).join(channel);
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if !super::config::get_bool("keep_sysroot") {
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// Cleanup the deps dir, but keep build scripts and the incremental cache for faster
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// recompilation as they are not affected by changes in cg_clif.
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remove_dir_if_exists(&build_dir.join("deps"));
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}
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// Build sysroot
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let mut rustflags = " -Zforce-unstable-if-unmarked -Cpanic=abort".to_string();
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rustflags.push_str(&format!(" -Zcodegen-backend={}", cg_clif_dylib_path.to_str().unwrap()));
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// Necessary for MinGW to find rsbegin.o and rsend.o
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rustflags
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.push_str(&format!(" --sysroot={}", RTSTARTUP_SYSROOT.to_path(dirs).to_str().unwrap()));
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if channel == "release" {
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rustflags.push_str(" -Zmir-opt-level=3");
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}
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compiler.rustflags += &rustflags;
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let mut build_cmd = STANDARD_LIBRARY.build(&compiler, dirs);
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if channel == "release" {
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build_cmd.arg("--release");
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}
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build_cmd.env("__CARGO_DEFAULT_LIB_METADATA", "cg_clif");
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spawn_and_wait(build_cmd);
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for entry in fs::read_dir(build_dir.join("deps")).unwrap() {
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let entry = entry.unwrap();
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if let Some(ext) = entry.path().extension() {
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if ext == "rmeta" || ext == "d" || ext == "dSYM" || ext == "clif" {
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continue;
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}
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} else {
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continue;
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};
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target_libs.libs.push(entry.path());
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}
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target_libs
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}
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fn build_rtstartup(dirs: &Dirs, compiler: &Compiler) -> Option<SysrootTarget> {
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if !compiler.triple.ends_with("windows-gnu") {
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return None;
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}
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RTSTARTUP_SYSROOT.ensure_fresh(dirs);
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let rtstartup_src = SYSROOT_SRC.to_path(dirs).join("library").join("rtstartup");
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let mut target_libs = SysrootTarget { triple: compiler.triple.clone(), libs: vec![] };
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for file in ["rsbegin", "rsend"] {
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let obj = RTSTARTUP_SYSROOT.to_path(dirs).join(format!("{file}.o"));
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let mut build_rtstartup_cmd = Command::new(&compiler.rustc);
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build_rtstartup_cmd
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.arg("--target")
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.arg(&compiler.triple)
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.arg("--emit=obj")
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.arg("-o")
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.arg(&obj)
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.arg(rtstartup_src.join(format!("{file}.rs")));
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spawn_and_wait(build_rtstartup_cmd);
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target_libs.libs.push(obj.clone());
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}
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Some(target_libs)
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}
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