Put all temporary build artifacts in build/

build_system/abi_cafe.rs

@@ -9,7 +9,7 @@ use super::SysrootKind;
 pub(crate) static ABI_CAFE_REPO: GitRepo =
     GitRepo::github("Gankra", "abi-cafe", "4c6dc8c9c687e2b3a760ff2176ce236872b37212", "abi-cafe");
 
-static ABI_CAFE: CargoProject = CargoProject::git(&ABI_CAFE_REPO, ".");
+static ABI_CAFE: CargoProject = CargoProject::git(&ABI_CAFE_REPO, ".", "abi_cafe");
 
 pub(crate) fn run(
     channel: &str,

build_system/build_backend.rs

@@ -4,7 +4,7 @@ use std::path::PathBuf;
 use super::rustc_info::get_file_name;
 use super::utils::{is_ci, CargoProject, Compiler};
 
-static CG_CLIF: CargoProject = CargoProject::local(".");
+static CG_CLIF: CargoProject = CargoProject::local(".", "cg_clif");
 
 pub(crate) fn build_backend(
     channel: &str,
@@ -43,8 +43,7 @@ pub(crate) fn build_backend(
     super::utils::spawn_and_wait(cmd);
 
     CG_CLIF
-        .source_dir()
+        .target_dir()
-        .join("target")
         .join(host_triple)
         .join(channel)
         .join(get_file_name("rustc_codegen_cranelift", "dylib"))

build_system/build_sysroot.rs

@@ -1,5 +1,5 @@
 use std::fs;
-use std::path::{Path, PathBuf};
+use std::path::Path;
 use std::process::{self, Command};
 
 use super::rustc_info::{get_file_name, get_rustc_version, get_wrapper_file_name};
@@ -40,7 +40,7 @@ pub(crate) fn build_sysroot(
 
         let mut build_cargo_wrapper_cmd = Command::new("rustc");
         build_cargo_wrapper_cmd
-            .arg(PathBuf::from("scripts").join(format!("{wrapper}.rs")))
+            .arg(Path::new("scripts").join(format!("{wrapper}.rs")))
             .arg("-o")
             .arg(dist_dir.join(wrapper_name))
             .arg("-g");
@@ -149,7 +149,7 @@ pub(crate) fn build_sysroot(
     }
 }
 
-static STANDARD_LIBRARY: CargoProject = CargoProject::local("build_sysroot");
+static STANDARD_LIBRARY: CargoProject = CargoProject::local("build_sysroot", "build_sysroot");
 
 fn build_clif_sysroot_for_triple(
     channel: &str,
@@ -176,7 +176,7 @@ fn build_clif_sysroot_for_triple(
         }
     }
 
-    let build_dir = Path::new("build_sysroot").join("target").join(triple).join(channel);
+    let build_dir = STANDARD_LIBRARY.target_dir().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
@@ -207,10 +207,7 @@ fn build_clif_sysroot_for_triple(
     spawn_and_wait(build_cmd);
 
     // Copy all relevant files to the sysroot
-    for entry in
+    for entry in fs::read_dir(build_dir.join("deps")).unwrap() {
-        fs::read_dir(Path::new("build_sysroot/target").join(triple).join(channel).join("deps"))
-            .unwrap()
-    {
         let entry = entry.unwrap();
         if let Some(ext) = entry.path().extension() {
             if ext == "rmeta" || ext == "d" || ext == "dSYM" || ext == "clif" {

build_system/mod.rs

@@ -49,13 +49,14 @@ pub fn main() {
     env::set_var("CG_CLIF_DISPLAY_CG_TIME", "1");
     env::set_var("CG_CLIF_DISABLE_INCR_CACHE", "1");
 
+    std::fs::create_dir_all("build").unwrap();
+
     {
         // Make sure we always explicitly specify the target dir
         let target = "build/target_dir_should_be_set_explicitly";
         env::set_var("CARGO_TARGET_DIR", target);
-        std::fs::create_dir_all("build").unwrap();
         let _ = std::fs::remove_file(target);
-        let file = std::fs::File::create(target).unwrap();
+        std::fs::File::create(target).unwrap();
     }
 
     if is_ci() {

build_system/prepare.rs

@@ -35,9 +35,7 @@ pub(crate) fn prepare() {
             .join(&host_compiler.triple)
             .join("debug")
             .join(get_file_name("main", "bin")),
-        super::tests::SIMPLE_RAYTRACER_REPO
+        Path::new("build").join(get_file_name("raytracer_cg_llvm", "bin")),
-            .source_dir()
-            .join(get_file_name("raytracer_cg_llvm", "bin")),
     )
     .unwrap();
 }

build_system/tests.rs

@@ -223,12 +223,12 @@ const BASE_SYSROOT_SUITE: &[TestCase] = &[
 pub(crate) static RAND_REPO: GitRepo =
     GitRepo::github("rust-random", "rand", "0f933f9c7176e53b2a3c7952ded484e1783f0bf1", "rand");
 
-static RAND: CargoProject = CargoProject::git(&RAND_REPO, ".");
+static RAND: CargoProject = CargoProject::git(&RAND_REPO, ".", "rand");
 
 pub(crate) static REGEX_REPO: GitRepo =
     GitRepo::github("rust-lang", "regex", "341f207c1071f7290e3f228c710817c280c8dca1", "regex");
 
-static REGEX: CargoProject = CargoProject::git(&REGEX_REPO, ".");
+static REGEX: CargoProject = CargoProject::git(&REGEX_REPO, ".", "regex");
 
 pub(crate) static PORTABLE_SIMD_REPO: GitRepo = GitRepo::github(
     "rust-lang",
@@ -237,7 +237,7 @@ pub(crate) static PORTABLE_SIMD_REPO: GitRepo = GitRepo::github(
     "portable-simd",
 );
 
-static PORTABLE_SIMD: CargoProject = CargoProject::git(&PORTABLE_SIMD_REPO, ".");
+static PORTABLE_SIMD: CargoProject = CargoProject::git(&PORTABLE_SIMD_REPO, ".", "portable_simd");
 
 pub(crate) static SIMPLE_RAYTRACER_REPO: GitRepo = GitRepo::github(
     "ebobby",
@@ -246,10 +246,11 @@ pub(crate) static SIMPLE_RAYTRACER_REPO: GitRepo = GitRepo::github(
     "<none>",
 );
 
-pub(crate) static SIMPLE_RAYTRACER: CargoProject = CargoProject::git(&SIMPLE_RAYTRACER_REPO, ".");
+pub(crate) static SIMPLE_RAYTRACER: CargoProject =
+    CargoProject::git(&SIMPLE_RAYTRACER_REPO, ".", "simple_raytracer");
 
 static LIBCORE_TESTS: CargoProject =
-    CargoProject::local("build_sysroot/sysroot_src/library/core/tests");
+    CargoProject::local("build_sysroot/sysroot_src/library/core/tests", "core_tests");
 
 const EXTENDED_SYSROOT_SUITE: &[TestCase] = &[
     TestCase::new("test.rust-random/rand", &|runner| {
@@ -276,7 +277,6 @@ const EXTENDED_SYSROOT_SUITE: &[TestCase] = &[
                 .unwrap()
                 .join("dist")
                 .join(get_wrapper_file_name("cargo-clif", "bin"));
-            let source_dir = SIMPLE_RAYTRACER.source_dir();
             let manifest_path = SIMPLE_RAYTRACER.manifest_path();
             let target_dir = SIMPLE_RAYTRACER.target_dir();
 
@@ -303,17 +303,15 @@ const EXTENDED_SYSROOT_SUITE: &[TestCase] = &[
             spawn_and_wait(bench_compile);
 
             eprintln!("[BENCH RUN] ebobby/simple-raytracer");
-            fs::copy(target_dir.join("debug").join("main"), source_dir.join("raytracer_cg_clif"))
+            fs::copy(
-                .unwrap();
+                target_dir.join("debug").join("main"),
+                Path::new("build").join("raytracer_cg_clif"),
+            )
+            .unwrap();
 
-            let mut bench_run = hyperfine_command(
+            let mut bench_run =
-                0,
+                hyperfine_command(0, run_runs, None, "./raytracer_cg_llvm", "./raytracer_cg_clif");
-                run_runs,
+            bench_run.current_dir(Path::new("build"));
-                None,
-                &source_dir.join("raytracer_cg_llvm").display().to_string(),
-                &source_dir.join("raytracer_cg_clif").display().to_string(),
-            );
-            bench_run.current_dir(SIMPLE_RAYTRACER.source_dir());
             spawn_and_wait(bench_run);
         } else {
             spawn_and_wait(SIMPLE_RAYTRACER.clean(&runner.target_compiler.cargo));
@@ -449,7 +447,7 @@ pub(crate) fn run_tests(
             &target_triple,
         );
 
-        let _ = fs::remove_dir_all(Path::new("target").join("out"));
+        let _ = fs::remove_dir_all(Path::new("build").join("example"));
         runner.run_testsuite(NO_SYSROOT_SUITE);
     } else {
         eprintln!("[SKIP] no_sysroot tests");
@@ -495,8 +493,8 @@ impl TestRunner {
         let root_dir = env::current_dir().unwrap();
 
         let mut out_dir = root_dir.clone();
-        out_dir.push("target");
+        out_dir.push("build");
-        out_dir.push("out");
+        out_dir.push("example");
 
         let is_native = host_triple == target_triple;
         let jit_supported =

build_system/utils.rs

@@ -51,15 +51,20 @@ enum CargoProjectSource {
 pub(crate) struct CargoProject {
     source: CargoProjectSource,
     path: &'static str,
+    target: &'static str,
 }
 
 impl CargoProject {
-    pub(crate) const fn local(path: &'static str) -> CargoProject {
+    pub(crate) const fn local(path: &'static str, target: &'static str) -> CargoProject {
-        CargoProject { source: CargoProjectSource::Local, path }
+        CargoProject { source: CargoProjectSource::Local, path, target }
     }
 
-    pub(crate) const fn git(git_repo: &'static GitRepo, path: &'static str) -> CargoProject {
+    pub(crate) const fn git(
-        CargoProject { source: CargoProjectSource::GitRepo(git_repo), path }
+        git_repo: &'static GitRepo,
+        path: &'static str,
+        target: &'static str,
+    ) -> CargoProject {
+        CargoProject { source: CargoProjectSource::GitRepo(git_repo), path, target }
     }
 
     pub(crate) fn source_dir(&self) -> PathBuf {
@@ -75,12 +80,7 @@ impl CargoProject {
     }
 
     pub(crate) fn target_dir(&self) -> PathBuf {
-        match self.source {
+        std::env::current_dir().unwrap().join("build").join(self.target)
-            CargoProjectSource::Local => std::env::current_dir().unwrap(),
-            CargoProjectSource::GitRepo(git_repo) => git_repo.source_dir(),
-        }
-        .join(self.path)
-        .join("target")
     }
 
     fn base_cmd(&self, command: &str, cargo: &Path) -> Command {

clean_all.sh

@@ -2,9 +2,9 @@
 set -e
 
 rm -rf build_sysroot/{sysroot_src/,target/,compiler-builtins/,rustc_version}
-rm -rf target/ dist/ perf.data{,.old} y.bin
+rm -rf target/ build/ dist/ perf.data{,.old} y.bin
 rm -rf download/
 
 # Kept for now in case someone updates their checkout of cg_clif before running clean_all.sh
 # FIXME remove at some point in the future
-rm -rf rand/ regex/ simple-raytracer/ portable-simd/ abi-checker/ abi-cafe/ build/
+rm -rf rand/ regex/ simple-raytracer/ portable-simd/ abi-checker/ abi-cafe/