rust/compiler/rustc_codegen_cranelift/build_system/prepare.rs
2022-10-23 16:43:48 +02:00

234 lines
7.4 KiB
Rust

use std::env;
use std::ffi::OsStr;
use std::fs;
use std::path::{Path, PathBuf};
use std::process::Command;
use super::rustc_info::{get_file_name, get_rustc_path, get_rustc_version};
use super::utils::{cargo_command, copy_dir_recursively, spawn_and_wait};
pub(crate) const ABI_CAFE: GitRepo =
GitRepo::github("Gankra", "abi-cafe", "4c6dc8c9c687e2b3a760ff2176ce236872b37212", "abi-cafe");
pub(crate) const RAND: GitRepo =
GitRepo::github("rust-random", "rand", "0f933f9c7176e53b2a3c7952ded484e1783f0bf1", "rand");
pub(crate) const REGEX: GitRepo =
GitRepo::github("rust-lang", "regex", "341f207c1071f7290e3f228c710817c280c8dca1", "regex");
pub(crate) const PORTABLE_SIMD: GitRepo = GitRepo::github(
"rust-lang",
"portable-simd",
"d5cd4a8112d958bd3a252327e0d069a6363249bd",
"portable-simd",
);
pub(crate) const SIMPLE_RAYTRACER: GitRepo = GitRepo::github(
"ebobby",
"simple-raytracer",
"804a7a21b9e673a482797aa289a18ed480e4d813",
"<none>",
);
pub(crate) fn prepare() {
if Path::new("download").exists() {
std::fs::remove_dir_all(Path::new("download")).unwrap();
}
std::fs::create_dir_all(Path::new("download")).unwrap();
prepare_sysroot();
// FIXME maybe install this only locally?
eprintln!("[INSTALL] hyperfine");
Command::new("cargo").arg("install").arg("hyperfine").spawn().unwrap().wait().unwrap();
ABI_CAFE.fetch();
RAND.fetch();
REGEX.fetch();
PORTABLE_SIMD.fetch();
SIMPLE_RAYTRACER.fetch();
eprintln!("[LLVM BUILD] simple-raytracer");
let build_cmd = cargo_command("cargo", "build", None, &SIMPLE_RAYTRACER.source_dir());
spawn_and_wait(build_cmd);
fs::copy(
SIMPLE_RAYTRACER
.source_dir()
.join("target")
.join("debug")
.join(get_file_name("main", "bin")),
SIMPLE_RAYTRACER.source_dir().join(get_file_name("raytracer_cg_llvm", "bin")),
)
.unwrap();
}
fn prepare_sysroot() {
let rustc_path = get_rustc_path();
let sysroot_src_orig = rustc_path.parent().unwrap().join("../lib/rustlib/src/rust");
let sysroot_src = env::current_dir().unwrap().join("build_sysroot").join("sysroot_src");
assert!(sysroot_src_orig.exists());
if sysroot_src.exists() {
fs::remove_dir_all(&sysroot_src).unwrap();
}
fs::create_dir_all(sysroot_src.join("library")).unwrap();
eprintln!("[COPY] sysroot src");
copy_dir_recursively(&sysroot_src_orig.join("library"), &sysroot_src.join("library"));
let rustc_version = get_rustc_version();
fs::write(Path::new("build_sysroot").join("rustc_version"), &rustc_version).unwrap();
eprintln!("[GIT] init");
let mut git_init_cmd = Command::new("git");
git_init_cmd.arg("init").arg("-q").current_dir(&sysroot_src);
spawn_and_wait(git_init_cmd);
init_git_repo(&sysroot_src);
apply_patches("sysroot", &sysroot_src);
}
pub(crate) struct GitRepo {
url: GitRepoUrl,
rev: &'static str,
patch_name: &'static str,
}
enum GitRepoUrl {
Github { user: &'static str, repo: &'static str },
}
impl GitRepo {
const fn github(
user: &'static str,
repo: &'static str,
rev: &'static str,
patch_name: &'static str,
) -> GitRepo {
GitRepo { url: GitRepoUrl::Github { user, repo }, rev, patch_name }
}
pub(crate) fn source_dir(&self) -> PathBuf {
match self.url {
GitRepoUrl::Github { user: _, repo } => {
std::env::current_dir().unwrap().join("download").join(repo)
}
}
}
fn fetch(&self) {
match self.url {
GitRepoUrl::Github { user, repo } => {
clone_repo_shallow_github(&self.source_dir(), user, repo, self.rev);
}
}
apply_patches(self.patch_name, &self.source_dir());
}
}
#[allow(dead_code)]
fn clone_repo(download_dir: &Path, repo: &str, rev: &str) {
eprintln!("[CLONE] {}", repo);
// Ignore exit code as the repo may already have been checked out
Command::new("git").arg("clone").arg(repo).arg(&download_dir).spawn().unwrap().wait().unwrap();
let mut clean_cmd = Command::new("git");
clean_cmd.arg("checkout").arg("--").arg(".").current_dir(&download_dir);
spawn_and_wait(clean_cmd);
let mut checkout_cmd = Command::new("git");
checkout_cmd.arg("checkout").arg("-q").arg(rev).current_dir(download_dir);
spawn_and_wait(checkout_cmd);
}
fn clone_repo_shallow_github(download_dir: &Path, user: &str, repo: &str, rev: &str) {
if cfg!(windows) {
// Older windows doesn't have tar or curl by default. Fall back to using git.
clone_repo(download_dir, &format!("https://github.com/{}/{}.git", user, repo), rev);
return;
}
let downloads_dir = std::env::current_dir().unwrap().join("download");
let archive_url = format!("https://github.com/{}/{}/archive/{}.tar.gz", user, repo, rev);
let archive_file = downloads_dir.join(format!("{}.tar.gz", rev));
let archive_dir = downloads_dir.join(format!("{}-{}", repo, rev));
eprintln!("[DOWNLOAD] {}/{} from {}", user, repo, archive_url);
// Remove previous results if they exists
let _ = std::fs::remove_file(&archive_file);
let _ = std::fs::remove_dir_all(&archive_dir);
let _ = std::fs::remove_dir_all(&download_dir);
// Download zip archive
let mut download_cmd = Command::new("curl");
download_cmd.arg("--location").arg("--output").arg(&archive_file).arg(archive_url);
spawn_and_wait(download_cmd);
// Unpack tar archive
let mut unpack_cmd = Command::new("tar");
unpack_cmd.arg("xf").arg(&archive_file).current_dir(downloads_dir);
spawn_and_wait(unpack_cmd);
// Rename unpacked dir to the expected name
std::fs::rename(archive_dir, &download_dir).unwrap();
init_git_repo(&download_dir);
// Cleanup
std::fs::remove_file(archive_file).unwrap();
}
fn init_git_repo(repo_dir: &Path) {
let mut git_init_cmd = Command::new("git");
git_init_cmd.arg("init").arg("-q").current_dir(repo_dir);
spawn_and_wait(git_init_cmd);
let mut git_add_cmd = Command::new("git");
git_add_cmd.arg("add").arg(".").current_dir(repo_dir);
spawn_and_wait(git_add_cmd);
let mut git_commit_cmd = Command::new("git");
git_commit_cmd.arg("commit").arg("-m").arg("Initial commit").arg("-q").current_dir(repo_dir);
spawn_and_wait(git_commit_cmd);
}
fn get_patches(source_dir: &Path, crate_name: &str) -> Vec<PathBuf> {
let mut patches: Vec<_> = fs::read_dir(source_dir.join("patches"))
.unwrap()
.map(|entry| entry.unwrap().path())
.filter(|path| path.extension() == Some(OsStr::new("patch")))
.filter(|path| {
path.file_name()
.unwrap()
.to_str()
.unwrap()
.split_once("-")
.unwrap()
.1
.starts_with(crate_name)
})
.collect();
patches.sort();
patches
}
fn apply_patches(crate_name: &str, target_dir: &Path) {
if crate_name == "<none>" {
return;
}
for patch in get_patches(&std::env::current_dir().unwrap(), crate_name) {
eprintln!(
"[PATCH] {:?} <- {:?}",
target_dir.file_name().unwrap(),
patch.file_name().unwrap()
);
let mut apply_patch_cmd = Command::new("git");
apply_patch_cmd.arg("am").arg(patch).arg("-q").current_dir(target_dir);
spawn_and_wait(apply_patch_cmd);
}
}