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use std::fs;
use std::path::Path;
use std::process::{self, Command};
use super::path::{Dirs, RelPath};
use super::rustc_info::{get_file_name, get_rustc_version, get_wrapper_file_name};
use super::utils::{spawn_and_wait, try_hard_link, CargoProject, Compiler};
use super::SysrootKind;
static DIST_DIR: RelPath = RelPath::DIST;
static BIN_DIR: RelPath = RelPath::DIST.join("bin");
static LIB_DIR: RelPath = RelPath::DIST.join("lib");
static RUSTLIB_DIR: RelPath = LIB_DIR.join("rustlib");
pub(crate) fn build_sysroot(
dirs: &Dirs,
channel: &str,
sysroot_kind: SysrootKind,
cg_clif_dylib_src: &Path,
host_triple: &str,
target_triple: &str,
) {
eprintln!("[BUILD] sysroot {:?}", sysroot_kind);
DIST_DIR.ensure_fresh(dirs);
BIN_DIR.ensure_exists(dirs);
LIB_DIR.ensure_exists(dirs);
// Copy the backend
let cg_clif_dylib_path = if cfg!(windows) {
// Windows doesn't have rpath support, so the cg_clif dylib needs to be next to the
// binaries.
BIN_DIR
} else {
LIB_DIR
}
.to_path(dirs)
.join(get_file_name("rustc_codegen_cranelift", "dylib"));
try_hard_link(cg_clif_dylib_src, &cg_clif_dylib_path);
// Build and copy rustc and cargo wrappers
for wrapper in ["rustc-clif", "rustdoc-clif", "cargo-clif"] {
let wrapper_name = get_wrapper_file_name(wrapper, "bin");
let mut build_cargo_wrapper_cmd = Command::new("rustc");
build_cargo_wrapper_cmd
.arg(RelPath::SCRIPTS.to_path(dirs).join(&format!("{wrapper}.rs")))
.arg("-o")
.arg(DIST_DIR.to_path(dirs).join(wrapper_name))
.arg("-g");
spawn_and_wait(build_cargo_wrapper_cmd);
}
let default_sysroot = super::rustc_info::get_default_sysroot();
let host_rustlib_lib = RUSTLIB_DIR.to_path(dirs).join(host_triple).join("lib");
let target_rustlib_lib = RUSTLIB_DIR.to_path(dirs).join(target_triple).join("lib");
fs::create_dir_all(&host_rustlib_lib).unwrap();
fs::create_dir_all(&target_rustlib_lib).unwrap();
if target_triple == "x86_64-pc-windows-gnu" {
if !default_sysroot.join("lib").join("rustlib").join(target_triple).join("lib").exists() {
eprintln!(
"The x86_64-pc-windows-gnu target needs to be installed first before it is possible \
to compile a sysroot for it.",
);
process::exit(1);
}
for file in fs::read_dir(
default_sysroot.join("lib").join("rustlib").join(target_triple).join("lib"),
)
.unwrap()
{
let file = file.unwrap().path();
if file.extension().map_or(true, |ext| ext.to_str().unwrap() != "o") {
continue; // only copy object files
}
try_hard_link(&file, target_rustlib_lib.join(file.file_name().unwrap()));
}
}
match sysroot_kind {
SysrootKind::None => {} // Nothing to do
SysrootKind::Llvm => {
for file in fs::read_dir(
default_sysroot.join("lib").join("rustlib").join(host_triple).join("lib"),
)
.unwrap()
{
let file = file.unwrap().path();
let file_name_str = file.file_name().unwrap().to_str().unwrap();
if (file_name_str.contains("rustc_")
&& !file_name_str.contains("rustc_std_workspace_")
&& !file_name_str.contains("rustc_demangle"))
|| file_name_str.contains("chalk")
|| file_name_str.contains("tracing")
|| file_name_str.contains("regex")
{
// These are large crates that are part of the rustc-dev component and are not
// necessary to run regular programs.
continue;
}
try_hard_link(&file, host_rustlib_lib.join(file.file_name().unwrap()));
}
if target_triple != host_triple {
for file in fs::read_dir(
default_sysroot.join("lib").join("rustlib").join(target_triple).join("lib"),
)
.unwrap()
{
let file = file.unwrap().path();
try_hard_link(&file, target_rustlib_lib.join(file.file_name().unwrap()));
}
}
}
SysrootKind::Clif => {
build_clif_sysroot_for_triple(dirs, channel, host_triple, &cg_clif_dylib_path, None);
if host_triple != target_triple {
// When cross-compiling it is often necessary to manually pick the right linker
let linker = match target_triple {
"aarch64-unknown-linux-gnu" => Some("aarch64-linux-gnu-gcc"),
"s390x-unknown-linux-gnu" => Some("s390x-linux-gnu-gcc"),
_ => None,
};
build_clif_sysroot_for_triple(
dirs,
channel,
target_triple,
&cg_clif_dylib_path,
linker,
);
}
// Copy std for the host to the lib dir. This is necessary for the jit mode to find
// libstd.
for file in fs::read_dir(host_rustlib_lib).unwrap() {
let file = file.unwrap().path();
let filename = file.file_name().unwrap().to_str().unwrap();
if filename.contains("std-") && !filename.contains(".rlib") {
try_hard_link(&file, LIB_DIR.to_path(dirs).join(file.file_name().unwrap()));
}
}
}
}
}
// FIXME move to download/ or dist/
pub(crate) static SYSROOT_RUSTC_VERSION: RelPath = RelPath::BUILD_SYSROOT.join("rustc_version");
pub(crate) static SYSROOT_SRC: RelPath = RelPath::BUILD_SYSROOT.join("sysroot_src");
static STANDARD_LIBRARY: CargoProject = CargoProject::new(&RelPath::BUILD_SYSROOT, "build_sysroot");
fn build_clif_sysroot_for_triple(
dirs: &Dirs,
channel: &str,
triple: &str,
cg_clif_dylib_path: &Path,
linker: Option<&str>,
) {
match fs::read_to_string(SYSROOT_RUSTC_VERSION.to_path(dirs)) {
Err(e) => {
eprintln!("Failed to get rustc version for patched sysroot source: {}", e);
eprintln!("Hint: Try `./y.rs prepare` to patch the sysroot source");
process::exit(1);
}
Ok(source_version) => {
let rustc_version = get_rustc_version();
if source_version != rustc_version {
eprintln!("The patched sysroot source is outdated");
eprintln!("Source version: {}", source_version.trim());
eprintln!("Rustc version: {}", rustc_version.trim());
eprintln!("Hint: Try `./y.rs prepare` to update the patched sysroot source");
process::exit(1);
}
}
}
let build_dir = STANDARD_LIBRARY.target_dir(dirs).join(triple).join(channel);
if !super::config::get_bool("keep_sysroot") {
// Cleanup the deps dir, but keep build scripts and the incremental cache for faster
// recompilation as they are not affected by changes in cg_clif.
if build_dir.join("deps").exists() {
fs::remove_dir_all(build_dir.join("deps")).unwrap();
}
}
// Build sysroot
let mut rustflags = "-Zforce-unstable-if-unmarked -Cpanic=abort".to_string();
rustflags.push_str(&format!(" -Zcodegen-backend={}", cg_clif_dylib_path.to_str().unwrap()));
rustflags.push_str(&format!(" --sysroot={}", DIST_DIR.to_path(dirs).to_str().unwrap()));
if channel == "release" {
rustflags.push_str(" -Zmir-opt-level=3");
}
if let Some(linker) = linker {
use std::fmt::Write;
write!(rustflags, " -Clinker={}", linker).unwrap();
}
let mut compiler = Compiler::with_triple(triple.to_owned());
compiler.rustflags = rustflags;
let mut build_cmd = STANDARD_LIBRARY.build(&compiler, dirs);
if channel == "release" {
build_cmd.arg("--release");
}
build_cmd.env("__CARGO_DEFAULT_LIB_METADATA", "cg_clif");
spawn_and_wait(build_cmd);
// Copy all relevant files to the sysroot
for entry in fs::read_dir(build_dir.join("deps")).unwrap() {
let entry = entry.unwrap();
if let Some(ext) = entry.path().extension() {
if ext == "rmeta" || ext == "d" || ext == "dSYM" || ext == "clif" {
continue;
}
} else {
continue;
};
try_hard_link(
entry.path(),
RUSTLIB_DIR.to_path(dirs).join(triple).join("lib").join(entry.file_name()),
);
}
}
|
