Generate content into build folder

.gitignore

@@ -29,3 +29,4 @@ tools/llvmint-2
 llvm
 build_system/target
 config.toml
+build

build_system/src/clean.rs

@@ -1,6 +1,7 @@
 use crate::utils::{remove_file, run_command};
 
 use std::fs::remove_dir_all;
+use std::path::Path;
 
 #[derive(Default)]
 enum CleanArg {
@@ -46,12 +47,14 @@ fn clean_all() -> Result<(), String> {
         "build_sysroot/sysroot",
         "build_sysroot/sysroot_src",
         "build_sysroot/target",
-        "regex",
-        "simple-raytracer",
     ];
     for dir in dirs_to_remove {
         let _ = remove_dir_all(dir);
     }
+    let dirs_to_remove = ["regex", "rand", "simple-raytracer"];
+    for dir in dirs_to_remove {
+        let _ = remove_dir_all(Path::new(crate::BUILD_DIR).join(dir));
+    }
 
     let files_to_remove = ["build_sysroot/Cargo.lock", "perf.data", "perf.data.old"];
 
@@ -64,16 +67,8 @@ fn clean_all() -> Result<(), String> {
 }
 
 fn clean_ui_tests() -> Result<(), String> {
-    run_command(
-        &[
-            &"find",
-            &"rust/build/x86_64-unknown-linux-gnu/test/ui/",
-            &"-name",
-            &"stamp",
-            &"-delete",
-        ],
-        None,
-    )?;
+    let path = Path::new(crate::BUILD_DIR).join("rust/build/x86_64-unknown-linux-gnu/test/ui/");
+    run_command(&[&"find", &path, &"-name", &"stamp", &"-delete"], None)?;
     Ok(())
 }
 

build_system/src/config.rs

@@ -191,12 +191,7 @@ impl ConfigInfo {
     }
 
     fn download_gccjit_if_needed(&mut self) -> Result<(), String> {
-        let output_dir = Path::new(
-            std::env::var("CARGO_TARGET_DIR")
-                .as_deref()
-                .unwrap_or("target"),
-        )
-        .join("libgccjit");
+        let output_dir = Path::new(crate::BUILD_DIR).join("libgccjit");
 
         let commit_hash_file = self.compute_path("libgccjit.version");
         let content = fs::read_to_string(&commit_hash_file).map_err(|_| {
@@ -523,7 +518,11 @@ fn download_gccjit(
             &"--retry",
             &"3",
             &"-SRfL",
-            if with_progress_bar { &"--progress-bar" } else { &"-s" },
+            if with_progress_bar {
+                &"--progress-bar"
+            } else {
+                &"-s"
+            },
             &url.as_str(),
         ],
         Some(&output_dir),
@@ -538,9 +537,9 @@ fn download_gccjit(
                 &"[Net.ServicePointManager]::SecurityProtocol = [Net.SecurityProtocolType]::Tls12;",
                 &format!(
                     "(New-Object System.Net.WebClient).DownloadFile('{}', '{}')",
-                    url,
-                    tempfile_name,
-                ).as_str(),
+                    url, tempfile_name,
+                )
+                .as_str(),
             ],
             Some(&output_dir),
         );

build_system/src/main.rs

@@ -11,6 +11,8 @@ mod rustc_info;
 mod test;
 mod utils;
 
+const BUILD_DIR: &str = "build";
+
 macro_rules! arg_error {
     ($($err:tt)*) => {{
         eprintln!($($err)*);

build_system/src/prepare.rs

@@ -152,11 +152,11 @@ fn clone_and_setup<F>(repo_url: &str, checkout_commit: &str, extra: Option<F>) -
 where
     F: Fn(&Path) -> Result<(), String>,
 {
-    let clone_result = git_clone(repo_url, None, false)?;
+    let clone_result = git_clone(repo_url, Some(&Path::new(crate::BUILD_DIR)), false)?;
     if !clone_result.ran_clone {
         println!("`{}` has already been cloned", clone_result.repo_name);
     }
-    let repo_path = Path::new(&clone_result.repo_name);
+    let repo_path = Path::new(crate::BUILD_DIR).join(&clone_result.repo_name);
     run_command(&[&"git", &"checkout", &"--", &"."], Some(&repo_path))?;
     run_command(&[&"git", &"checkout", &checkout_commit], Some(&repo_path))?;
     let filter = format!("-{}-", clone_result.repo_name);
@@ -219,8 +219,7 @@ impl PrepareArg {
     --only-libcore           : Only setup libcore and don't clone other repositories
     --cross                  : Apply the patches needed to do cross-compilation
     --libgccjit12-patches    : Apply patches needed for libgccjit12
-    --help                   : Show this help
-"#
+    --help                   : Show this help"#
         )
     }
 }

build_system/src/test.rs

@@ -485,19 +485,25 @@ fn std_tests(env: &Env, args: &TestArg) -> Result<(), String> {
     Ok(())
 }
 
-fn setup_rustc(env: &mut Env, args: &TestArg) -> Result<(), String> {
+fn setup_rustc(env: &mut Env, args: &TestArg) -> Result<PathBuf, String> {
     let toolchain = format!(
         "+{channel}-{host}",
         channel = get_toolchain()?, // May also include date
         host = args.config_info.host_triple
     );
-    let rust_dir = Some(Path::new("rust"));
+    let rust_dir_path = Path::new(crate::BUILD_DIR).join("rust");
     // If the repository was already cloned, command will fail, so doesn't matter.
     let _ = run_command_with_output_and_env(
-        &[&"git", &"clone", &"https://github.com/rust-lang/rust.git"],
+        &[
+            &"git",
+            &"clone",
+            &"https://github.com/rust-lang/rust.git",
+            &rust_dir_path,
+        ],
         None,
         Some(env),
     );
+    let rust_dir: Option<&Path> = Some(&rust_dir_path);
     run_command(&[&"git", &"checkout", &"--", &"tests/"], rust_dir)?;
     run_command_with_output_and_env(&[&"git", &"fetch"], rust_dir, Some(env))?;
     let rustc_commit = match rustc_version_info(env.get("RUSTC").map(|s| s.as_str()))?.commit_hash {
@@ -561,8 +567,9 @@ fn setup_rustc(env: &mut Env, args: &TestArg) -> Result<(), String> {
             String::new()
         }
     };
+    let file_path = rust_dir_path.join("config.toml");
     std::fs::write(
-        "rust/config.toml",
+        &file_path,
         &format!(
             r#"change-id = 115898
 
@@ -587,13 +594,19 @@ download-ci-llvm = false
             llvm_filecheck = llvm_filecheck.trim(),
         ),
     )
-    .map_err(|error| format!("Failed to write into `rust/config.toml`: {:?}", error))?;
-    Ok(())
+    .map_err(|error| {
+        format!(
+            "Failed to write into `{}`: {:?}",
+            file_path.display(),
+            error
+        )
+    })?;
+    Ok(rust_dir_path)
 }
 
 fn asm_tests(env: &Env, args: &TestArg) -> Result<(), String> {
     let mut env = env.clone();
-    setup_rustc(&mut env, args)?;
+    let rust_dir = setup_rustc(&mut env, args)?;
     // FIXME: create a function "display_if_not_quiet" or something along the line.
     println!("[TEST] rustc asm test suite");
 
@@ -621,7 +634,7 @@ fn asm_tests(env: &Env, args: &TestArg) -> Result<(), String> {
             )
             .as_str(),
         ],
-        Some(Path::new("rust")),
+        Some(&rust_dir),
         Some(&env),
     )?;
     Ok(())
@@ -761,11 +774,11 @@ fn extended_rand_tests(env: &Env, args: &TestArg) -> Result<(), String> {
         println!("Not using GCC master branch. Skipping `extended_rand_tests`.");
         return Ok(());
     }
-    let path = Path::new("rand");
-    run_cargo_command(&[&"clean"], Some(path), env, args)?;
+    let path = Path::new(crate::BUILD_DIR).join("rand");
+    run_cargo_command(&[&"clean"], Some(&path), env, args)?;
     // FIXME: create a function "display_if_not_quiet" or something along the line.
     println!("[TEST] rust-random/rand");
-    run_cargo_command(&[&"test", &"--workspace"], Some(path), env, args)?;
+    run_cargo_command(&[&"test", &"--workspace"], Some(&path), env, args)?;
     Ok(())
 }
 
@@ -774,8 +787,8 @@ fn extended_regex_example_tests(env: &Env, args: &TestArg) -> Result<(), String>
         println!("Not using GCC master branch. Skipping `extended_regex_example_tests`.");
         return Ok(());
     }
-    let path = Path::new("regex");
-    run_cargo_command(&[&"clean"], Some(path), env, args)?;
+    let path = Path::new(crate::BUILD_DIR).join("regex");
+    run_cargo_command(&[&"clean"], Some(&path), env, args)?;
     // FIXME: create a function "display_if_not_quiet" or something along the line.
     println!("[TEST] rust-lang/regex example shootout-regex-dna");
     let mut env = env.clone();
@@ -788,14 +801,14 @@ fn extended_regex_example_tests(env: &Env, args: &TestArg) -> Result<(), String>
     // Make sure `[codegen mono items] start` doesn't poison the diff
     run_cargo_command(
         &[&"build", &"--example", &"shootout-regex-dna"],
-        Some(path),
+        Some(&path),
         &env,
         args,
     )?;
 
     run_cargo_command_with_callback(
         &[&"run", &"--example", &"shootout-regex-dna"],
-        Some(path),
+        Some(&path),
         &env,
         args,
         |cargo_command, cwd, env| {
@@ -838,6 +851,7 @@ fn extended_regex_tests(env: &Env, args: &TestArg) -> Result<(), String> {
         env.get("RUSTFLAGS").cloned().unwrap_or_default()
     );
     env.insert("RUSTFLAGS".to_string(), rustflags);
+    let path = Path::new(crate::BUILD_DIR).join("regex");
     run_cargo_command(
         &[
             &"test",
@@ -850,7 +864,7 @@ fn extended_regex_tests(env: &Env, args: &TestArg) -> Result<(), String> {
             &"-Zunstable-options",
             &"-q",
         ],
-        Some(Path::new("regex")),
+        Some(&path),
         &env,
         args,
     )?;
@@ -928,17 +942,15 @@ fn should_remove_test(file_path: &Path) -> Result<bool, String> {
 
 fn test_rustc_inner<F>(env: &Env, args: &TestArg, prepare_files_callback: F) -> Result<(), String>
 where
-    F: Fn() -> Result<bool, String>,
+    F: Fn(&Path) -> Result<bool, String>,
 {
     // FIXME: create a function "display_if_not_quiet" or something along the line.
     println!("[TEST] rust-lang/rust");
     let mut env = env.clone();
-    setup_rustc(&mut env, args)?;
-
-    let rust_path = Path::new("rust");
+    let rust_path = setup_rustc(&mut env, args)?;
 
     walk_dir(
-        "rust/tests/ui",
+        rust_path.join("tests/ui"),
         |dir| {
             let dir_name = dir.file_name().and_then(|name| name.to_str()).unwrap_or("");
             if [
@@ -1001,7 +1013,7 @@ where
 
     walk_dir(rust_path.join("tests/ui"), dir_handling, file_handling)?;
 
-    if !prepare_files_callback()? {
+    if !prepare_files_callback(&rust_path)? {
         // FIXME: create a function "display_if_not_quiet" or something along the line.
         println!("Keeping all UI tests");
     }
@@ -1027,7 +1039,7 @@ where
                     &"-path",
                     &"*/auxiliary/*",
                 ],
-                Some(rust_path),
+                Some(&rust_path),
             )?
             .stdout,
         )
@@ -1072,18 +1084,18 @@ where
             &"--rustc-args",
             &rustc_args,
         ],
-        Some(rust_path),
+        Some(&rust_path),
         Some(&env),
     )?;
     Ok(())
 }
 
 fn test_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
-    test_rustc_inner(env, args, || Ok(false))
+    test_rustc_inner(env, args, |_| Ok(false))
 }
 
 fn test_failing_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
-    test_rustc_inner(env, args, || {
+    test_rustc_inner(env, args, |rust_path| {
         // Removing all tests.
         run_command(
             &[
@@ -1098,7 +1110,7 @@ fn test_failing_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
                 &"*/auxiliary/*",
                 &"-delete",
             ],
-            Some(Path::new("rust")),
+            Some(rust_path),
         )?;
         // Putting back only the failing ones.
         let path = "tests/failing-ui-tests.txt";
@@ -1108,10 +1120,7 @@ fn test_failing_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
                 .map(|line| line.trim())
                 .filter(|line| !line.is_empty())
             {
-                run_command(
-                    &[&"git", &"checkout", &"--", &file],
-                    Some(Path::new("rust")),
-                )?;
+                run_command(&[&"git", &"checkout", &"--", &file], Some(&rust_path))?;
             }
         } else {
             println!(
@@ -1124,7 +1133,7 @@ fn test_failing_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
 }
 
 fn test_successful_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
-    test_rustc_inner(env, args, || {
+    test_rustc_inner(env, args, |rust_path| {
         // Removing the failing tests.
         let path = "tests/failing-ui-tests.txt";
         if let Ok(files) = std::fs::read_to_string(path) {
@@ -1133,7 +1142,7 @@ fn test_successful_rustc(env: &Env, args: &TestArg) -> Result<(), String> {
                 .map(|line| line.trim())
                 .filter(|line| !line.is_empty())
             {
-                let path = Path::new("rust").join(file);
+                let path = rust_path.join(file);
                 remove_file(&path)?;
             }
         } else {

tests/lang_tests_common.rs

@@ -28,7 +28,7 @@ pub fn main_inner(profile: Profile) {
     } else {
         // then we try to retrieve it from the `target` folder.
         let commit = include_str!("../libgccjit.version").trim();
-        Path::new("target/libgccjit").join(commit)
+        Path::new("build/libgccjit").join(commit)
     };
 
     let gcc_path = Path::new(&gcc_path)