build_system/prepare.rs

   1 use std::env;
   2 use std::ffi::OsStr;
   3 use std::ffi::OsString;
   4 use std::fs;
   5 use std::path::Path;
   6 use std::process::Command;
   7
   8 use crate::rustc_info::{get_file_name, get_rustc_path, get_rustc_version};
   9 use crate::utils::{copy_dir_recursively, spawn_and_wait};
  10
  11 pub(crate) fn prepare() {
  12     prepare_sysroot();
  13
  14     eprintln!("[INSTALL] hyperfine");
  15     Command::new("cargo").arg("install").arg("hyperfine").spawn().unwrap().wait().unwrap();
  16
  17     clone_repo(
  18         "rand",
  19         "https://github.com/rust-random/rand.git",
  20         "0f933f9c7176e53b2a3c7952ded484e1783f0bf1",
  21     );
  22     apply_patches("rand", Path::new("rand"));
  23
  24     clone_repo(
  25         "regex",
  26         "https://github.com/rust-lang/regex.git",
  27         "341f207c1071f7290e3f228c710817c280c8dca1",
  28     );
  29
  30     clone_repo(
  31         "simple-raytracer",
  32         "https://github.com/ebobby/simple-raytracer",
  33         "804a7a21b9e673a482797aa289a18ed480e4d813",
  34     );
  35
  36     eprintln!("[LLVM BUILD] simple-raytracer");
  37     let mut build_cmd = Command::new("cargo");
  38     build_cmd.arg("build").env_remove("CARGO_TARGET_DIR").current_dir("simple-raytracer");
  39     spawn_and_wait(build_cmd);
  40     fs::copy(
  41         Path::new("simple-raytracer/target/debug").join(get_file_name("main", "bin")),
  42         // FIXME use get_file_name here too once testing is migrated to rust
  43         "simple-raytracer/raytracer_cg_llvm",
  44     )
  45     .unwrap();
  46 }
  47
  48 fn prepare_sysroot() {
  49     let rustc_path = get_rustc_path();
  50     let sysroot_src_orig = rustc_path.parent().unwrap().join("../lib/rustlib/src/rust");
  51     let sysroot_src = env::current_dir().unwrap().join("build_sysroot").join("sysroot_src");
  52
  53     assert!(sysroot_src_orig.exists());
  54
  55     if sysroot_src.exists() {
  56         fs::remove_dir_all(&sysroot_src).unwrap();
  57     }
  58     fs::create_dir_all(sysroot_src.join("library")).unwrap();
  59     eprintln!("[COPY] sysroot src");
  60     copy_dir_recursively(&sysroot_src_orig.join("library"), &sysroot_src.join("library"));
  61
  62     let rustc_version = get_rustc_version();
  63     fs::write(
  64         Path::new("build_sysroot").join("rustc_version"),
  65         &rustc_version,
  66     )
  67     .unwrap();
  68
  69     eprintln!("[GIT] init");
  70     let mut git_init_cmd = Command::new("git");
  71     git_init_cmd.arg("init").arg("-q").current_dir(&sysroot_src);
  72     spawn_and_wait(git_init_cmd);
  73
  74     let mut git_add_cmd = Command::new("git");
  75     git_add_cmd.arg("add").arg(".").current_dir(&sysroot_src);
  76     spawn_and_wait(git_add_cmd);
  77
  78     let mut git_commit_cmd = Command::new("git");
  79     git_commit_cmd
  80         .arg("commit")
  81         .arg("-m")
  82         .arg("Initial commit")
  83         .arg("-q")
  84         .current_dir(&sysroot_src);
  85     spawn_and_wait(git_commit_cmd);
  86
  87     apply_patches("sysroot", &sysroot_src);
  88
  89     clone_repo(
  90         "build_sysroot/compiler-builtins",
  91         "https://github.com/rust-lang/compiler-builtins.git",
  92         "0.1.46",
  93     );
  94     apply_patches("compiler-builtins", Path::new("build_sysroot/compiler-builtins"));
  95 }
  96
  97 fn clone_repo(target_dir: &str, repo: &str, rev: &str) {
  98     eprintln!("[CLONE] {}", repo);
  99     // Ignore exit code as the repo may already have been checked out
 100     Command::new("git").arg("clone").arg(repo).arg(target_dir).spawn().unwrap().wait().unwrap();
 101
 102     let mut clean_cmd = Command::new("git");
 103     clean_cmd.arg("checkout").arg("--").arg(".").current_dir(target_dir);
 104     spawn_and_wait(clean_cmd);
 105
 106     let mut checkout_cmd = Command::new("git");
 107     checkout_cmd.arg("checkout").arg("-q").arg(rev).current_dir(target_dir);
 108     spawn_and_wait(checkout_cmd);
 109 }
 110
 111 fn get_patches(crate_name: &str) -> Vec<OsString> {
 112     let mut patches: Vec<_> = fs::read_dir("patches")
 113         .unwrap()
 114         .map(|entry| entry.unwrap().path())
 115         .filter(|path| path.extension() == Some(OsStr::new("patch")))
 116         .map(|path| path.file_name().unwrap().to_owned())
 117         .filter(|file_name| {
 118             file_name.to_str().unwrap().split_once("-").unwrap().1.starts_with(crate_name)
 119         })
 120         .collect();
 121     patches.sort();
 122     patches
 123 }
 124
 125 fn apply_patches(crate_name: &str, target_dir: &Path) {
 126     for patch in get_patches(crate_name) {
 127         eprintln!("[PATCH] {:?} <- {:?}", target_dir.file_name().unwrap(), patch);
 128         let patch_arg = env::current_dir().unwrap().join("patches").join(patch);
 129         let mut apply_patch_cmd = Command::new("git");
 130         apply_patch_cmd.arg("am").arg(patch_arg).arg("-q").current_dir(target_dir);
 131         spawn_and_wait(apply_patch_cmd);
 132     }
 133 }