# Struct bootstrap::Build

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    pub struct Build {Show 33 fields
        pub(crate) config: Config,
        pub(crate) version: String,
        pub(crate) src: PathBuf,
        pub(crate) out: PathBuf,
        pub(crate) bootstrap_out: PathBuf,
        pub(crate) cargo_info: GitInfo,
        pub(crate) rust_analyzer_info: GitInfo,
        pub(crate) clippy_info: GitInfo,
        pub(crate) miri_info: GitInfo,
        pub(crate) rustfmt_info: GitInfo,
        pub(crate) in_tree_llvm_info: GitInfo,
        pub(crate) local_rebuild: bool,
        pub(crate) fail_fast: bool,
        pub(crate) doc_tests: DocTests,
        pub(crate) verbosity: usize,
        pub(crate) build: TargetSelection,
        pub(crate) hosts: Vec<TargetSelection>,
        pub(crate) targets: Vec<TargetSelection>,
        pub(crate) initial_rustc: PathBuf,
        pub(crate) initial_cargo: PathBuf,
        pub(crate) initial_lld: PathBuf,
        pub(crate) initial_libdir: PathBuf,
        pub(crate) initial_sysroot: PathBuf,
        pub(crate) cc: RefCell<HashMap<TargetSelection, Tool>>,
        pub(crate) cxx: RefCell<HashMap<TargetSelection, Tool>>,
        pub(crate) ar: RefCell<HashMap<TargetSelection, PathBuf>>,
        pub(crate) ranlib: RefCell<HashMap<TargetSelection, PathBuf>>,
        pub(crate) crates: HashMap<String, Crate>,
        pub(crate) crate_paths: HashMap<PathBuf, String>,
        pub(crate) is_sudo: bool,
        pub(crate) ci_env: CiEnv,
        pub(crate) delayed_failures: RefCell<Vec<String>>,
        pub(crate) prerelease_version: Cell<Option<u32>>,
    }

Expand description

Global configuration for the build system.

This structure transitively contains all configuration for the build system. All filesystem-encoded configuration is in `config`, all flags are in `flags`, and then parsed or probed information is listed in the keys below.

This structure is a parameter of almost all methods in the build system, although most functions are implemented as free functions rather than methods specifically on this structure itself (to make it easier to organize).

## Fields§

§`config: Config`

User-specified configuration from `config.toml`.

§`version: String`§`src: PathBuf`§`out: PathBuf`§`bootstrap_out: PathBuf`§`cargo_info: GitInfo`§`rust_analyzer_info: GitInfo`§`clippy_info: GitInfo`§`miri_info: GitInfo`§`rustfmt_info: GitInfo`§`in_tree_llvm_info: GitInfo`§`local_rebuild: bool`§`fail_fast: bool`§`doc_tests: DocTests`§`verbosity: usize`§`build: TargetSelection`

Build triple for the pre-compiled snapshot compiler.

§`hosts: Vec<TargetSelection>`

Which triples to produce a compiler toolchain for.

§`targets: Vec<TargetSelection>`

Which triples to build libraries (core/alloc/std/test/proc_macro) for.

§`initial_rustc: PathBuf`§`initial_cargo: PathBuf`§`initial_lld: PathBuf`§`initial_libdir: PathBuf`§`initial_sysroot: PathBuf`§`cc: RefCell<HashMap<TargetSelection, Tool>>`§`cxx: RefCell<HashMap<TargetSelection, Tool>>`§`ar: RefCell<HashMap<TargetSelection, PathBuf>>`§`ranlib: RefCell<HashMap<TargetSelection, PathBuf>>`§`crates: HashMap<String, Crate>`§`crate_paths: HashMap<PathBuf, String>`§`is_sudo: bool`§`ci_env: CiEnv`§`delayed_failures: RefCell<Vec<String>>`§`prerelease_version: Cell<Option<u32>>`

## Implementations§

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### impl Build

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#### pub(crate) fn verbose(&self, f: impl Fn())

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#### pub(crate) fn is_verbose(&self) -> bool

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#### pub(crate) fn create(&self, path: &Path, s: &str)

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#### pub(crate) fn remove(&self, f: &Path)

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#### pub(crate) fn tempdir(&self) -> PathBuf

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#### pub(crate) fn llvm_link_shared(&self) -> bool

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#### pub(crate) fn download_rustc(&self) -> bool

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#### pub(crate) fn initial_rustfmt(&self) -> Option<PathBuf>

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### impl Build

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#### pub fn new(config: Config) -> Build

Creates a new set of build configuration from the `flags` on the command line and the filesystem `config`.

By default all build output will be placed in the current directory.

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#### pub(crate) fn update_submodule(&self, relative_path: &Path)

Given a path to the directory of a submodule, update it.

`relative_path` should be relative to the root of the git repository, not an absolute path.

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#### pub fn update_existing_submodules(&self)

If any submodule has been initialized already, sync it unconditionally. This avoids contributors checking in a submodule change by accident.

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#### pub fn update_existing_submodule(&self, submodule: &Path)

Updates the given submodule only if it’s initialized already; nothing happens otherwise.

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#### pub fn build(&mut self)

Executes the entire build, as configured by the flags and configuration.

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#### pub(crate) fn clear_if_dirty(&self, dir: &Path, input: &Path) -> bool

Clear out `dir` if `input` is newer.

After this executes, it will also ensure that `dir` exists.

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#### pub(crate) fn rust_info(&self) -> &GitInfo

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#### pub(crate) fn std_features(&self, target: TargetSelection) -> String

Gets the space-separated set of activated features for the standard library.

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#### pub(crate) fn rustc_features( &self, kind: Kind, target: TargetSelection, ) -> String

Gets the space-separated set of activated features for the compiler.

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#### pub(crate) fn cargo_dir(&self) -> &'static str

Component directory that Cargo will produce output into (e.g. release/debug)

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#### pub(crate) fn tools_dir(&self, compiler: Compiler) -> PathBuf

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#### pub(crate) fn stage_out(&self, compiler: Compiler, mode: Mode) -> PathBuf

Returns the root directory for all output generated in a particular stage when running with a particular host compiler.

The mode indicates what the root directory is for.

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#### pub(crate) fn cargo_out( &self, compiler: Compiler, mode: Mode, target: TargetSelection, ) -> PathBuf

Returns the root output directory for all Cargo output in a given stage, running a particular compiler, whether or not we’re building the standard library, and targeting the specified architecture.

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#### pub(crate) fn llvm_out(&self, target: TargetSelection) -> PathBuf

Root output directory of LLVM for `target`

Note that if LLVM is configured externally then the directory returned will likely be empty.

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#### pub(crate) fn lld_out(&self, target: TargetSelection) -> PathBuf

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#### pub(crate) fn doc_out(&self, target: TargetSelection) -> PathBuf

Output directory for all documentation for a target

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#### pub(crate) fn json_doc_out(&self, target: TargetSelection) -> PathBuf

Output directory for all JSON-formatted documentation for a target

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#### pub(crate) fn test_out(&self, target: TargetSelection) -> PathBuf

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#### pub(crate) fn compiler_doc_out(&self, target: TargetSelection) -> PathBuf

Output directory for all documentation for a target

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#### pub(crate) fn md_doc_out(&self, target: TargetSelection) -> PathBuf

Output directory for some generated md crate documentation for a target (temporary)

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#### pub(crate) fn is_system_llvm(&self, target: TargetSelection) -> bool

Returns `true` if this is an external version of LLVM not managed by bootstrap. In particular, we expect llvm sources to be available when this is false.

NOTE: this is not the same as `!is_rust_llvm` when `llvm_has_patches` is set.

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#### pub(crate) fn is_rust_llvm(&self, target: TargetSelection) -> bool

Returns `true` if this is our custom, patched, version of LLVM.

This does not necessarily imply that we’re managing the `llvm-project` submodule.

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#### pub(crate) fn llvm_filecheck(&self, target: TargetSelection) -> PathBuf

Returns the path to `FileCheck` binary for the specified target

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#### pub(crate) fn native_dir(&self, target: TargetSelection) -> PathBuf

Directory for libraries built from C/C++ code and shared between stages.

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#### pub(crate) fn test_helpers_out(&self, target: TargetSelection) -> PathBuf

Root output directory for rust_test_helpers library compiled for `target`

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#### pub(crate) fn add_rust_test_threads(&self, cmd: &mut BootstrapCommand)

Adds the `RUST_TEST_THREADS` env var if necessary

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#### pub(crate) fn rustc_snapshot_libdir(&self) -> PathBuf

Returns the libdir of the snapshot compiler.

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#### pub(crate) fn rustc_snapshot_sysroot(&self) -> &Path

Returns the sysroot of the snapshot compiler.

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#### pub(crate) fn run<C: Into<BootstrapCommand>>(&self, command: C) -> CommandOutput

Execute a command and return its output. This method should be used for all command executions in bootstrap.

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#### pub fn is_verbose_than(&self, level: usize) -> bool

Check if verbosity is greater than the `level`

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#### pub(crate) fn verbose_than(&self, level: usize, f: impl Fn())

Runs a function if verbosity is greater than `level`.

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#### pub(crate) fn info(&self, msg: &str)

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#### pub(crate) fn msg_clippy( &self, what: impl Display, target: impl Into<Option<TargetSelection>>, ) -> Option<Group>

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#### pub(crate) fn msg_check( &self, what: impl Display, target: impl Into<Option<TargetSelection>>, ) -> Option<Group>

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#### pub(crate) fn msg_doc( &self, compiler: Compiler, what: impl Display, target: impl Into<Option<TargetSelection>> + Copy, ) -> Option<Group>

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#### pub(crate) fn msg_build( &self, compiler: Compiler, what: impl Display, target: impl Into<Option<TargetSelection>>, ) -> Option<Group>

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#### pub(crate) fn msg( &self, action: impl Into<Kind>, stage: u32, what: impl Display, host: impl Into<Option<TargetSelection>>, target: impl Into<Option<TargetSelection>>, ) -> Option<Group>

Return a `Group` guard for a `Step` that is built for each `--stage`.

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#### pub(crate) fn msg_unstaged( &self, action: impl Into<Kind>, what: impl Display, target: TargetSelection, ) -> Option<Group>

Return a `Group` guard for a `Step` that is only built once and isn’t affected by `--stage`.

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#### pub(crate) fn msg_sysroot_tool( &self, action: impl Into<Kind>, stage: u32, what: impl Display, host: TargetSelection, target: TargetSelection, ) -> Option<Group>

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#### pub(crate) fn group(&self, msg: &str) -> Option<Group>

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#### pub(crate) fn jobs(&self) -> u32

Returns the number of parallel jobs that have been configured for this build.

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#### pub(crate) fn debuginfo_map_to(&self, which: GitRepo) -> Option<String>

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#### pub(crate) fn cc(&self, target: TargetSelection) -> PathBuf

Returns the path to the C compiler for the target specified.

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#### pub(crate) fn cflags( &self, target: TargetSelection, which: GitRepo, c: CLang, ) -> Vec<String>

Returns a list of flags to pass to the C compiler for the target specified.

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#### pub(crate) fn ar(&self, target: TargetSelection) -> Option<PathBuf>

Returns the path to the `ar` archive utility for the target specified.

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#### pub(crate) fn ranlib(&self, target: TargetSelection) -> Option<PathBuf>

Returns the path to the `ranlib` utility for the target specified.

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#### pub(crate) fn cxx(&self, target: TargetSelection) -> Result<PathBuf, String>

Returns the path to the C++ compiler for the target specified.

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#### pub(crate) fn linker(&self, target: TargetSelection) -> Option<PathBuf>

Returns the path to the linker for the given target if it needs to be overridden.

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#### pub(crate) fn is_lld_direct_linker(&self, target: TargetSelection) -> bool

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#### pub(crate) fn crt_static(&self, target: TargetSelection) -> Option<bool>

Returns if this target should statically link the C runtime, if specified

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#### pub(crate) fn musl_root(&self, target: TargetSelection) -> Option<&Path>

Returns the “musl root” for this `target`, if defined

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#### pub(crate) fn musl_libdir(&self, target: TargetSelection) -> Option<PathBuf>

Returns the “musl libdir” for this `target`.

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#### pub(crate) fn wasi_libdir(&self, target: TargetSelection) -> Option<PathBuf>

Returns the `lib` directory for the WASI target specified, if configured.

This first consults `wasi-root` as configured in per-target configuration, and failing that it assumes that `$WASI_SDK_PATH` is set in the environment, and failing that `None` is returned.

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#### pub(crate) fn no_std(&self, target: TargetSelection) -> Option<bool>

Returns `true` if this is a no-std `target`, if defined

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#### pub(crate) fn remote_tested(&self, target: TargetSelection) -> bool

Returns `true` if the target will be tested using the `remote-test-client` and `remote-test-server` binaries.

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#### pub(crate) fn runner(&self, target: TargetSelection) -> Option<String>

Returns an optional “runner” to pass to `compiletest` when executing test binaries.

An example of this would be a WebAssembly runtime when testing the wasm targets.

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#### pub(crate) fn default_wasi_runner(&self) -> Option<String>

When a `runner` configuration is not provided and a WASI-looking target is being tested this is consulted to prove the environment to see if there’s a runtime already lying around that seems reasonable to use.

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#### pub(crate) fn qemu_rootfs(&self, target: TargetSelection) -> Option<&Path>

Returns the root of the “rootfs” image that this target will be using, if one was configured.

If `Some` is returned then that means that tests for this target are emulated with QEMU and binaries will need to be shipped to the emulator.

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#### pub(crate) fn python(&self) -> &Path

Path to the python interpreter to use

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#### pub(crate) fn extended_error_dir(&self) -> PathBuf

Temporary directory that extended error information is emitted to.

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#### pub(crate) fn force_use_stage1( &self, stage: u32, target: TargetSelection, ) -> bool

Tests whether the `compiler` compiling for `target` should be forced to use a stage1 compiler instead.

Currently, by default, the build system does not perform a “full bootstrap” by default where we compile the compiler three times. Instead, we compile the compiler two times. The final stage (stage2) just copies the libraries from the previous stage, which is what this method detects.

Here we return `true` if:

- The build isn’t performing a full bootstrap
- The `compiler` is in the final stage, 2
- We’re not cross-compiling, so the artifacts are already available in stage1

When all of these conditions are met the build will lift artifacts from the previous stage forward.

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#### pub(crate) fn force_use_stage2(&self, stage: u32) -> bool

Checks whether the `compiler` compiling for `target` should be forced to use a stage2 compiler instead.

When we download the pre-compiled version of rustc and compiler stage is >= 2, it should be forced to use a stage2 compiler.

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#### pub(crate) fn release(&self, num: &str) -> String

Given `num` in the form “a.b.c” return a “release string” which describes the release version number.

For example on nightly this returns “a.b.c-nightly”, on beta it returns “a.b.c-beta.1” and on stable it just returns “a.b.c”.

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#### pub(crate) fn beta_prerelease_version(&self) -> u32

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#### pub(crate) fn rust_release(&self) -> String

Returns the value of `release` above for Rust itself.

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#### pub(crate) fn package_vers(&self, num: &str) -> String

Returns the “package version” for a component given the `num` release number.

The package version is typically what shows up in the names of tarballs. For channels like beta/nightly it’s just the channel name, otherwise it’s the `num` provided.

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#### pub(crate) fn rust_package_vers(&self) -> String

Returns the value of `package_vers` above for Rust itself.

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#### pub(crate) fn rust_version(&self) -> String

Returns the `version` string associated with this compiler for Rust itself.

Note that this is a descriptive string which includes the commit date, sha, version, etc.

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#### pub(crate) fn rust_sha(&self) -> Option<&str>

Returns the full commit hash.

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#### pub(crate) fn release_num(&self, package: &str) -> String

Returns the `a.b.c` version that the given package is at.

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#### pub(crate) fn unstable_features(&self) -> bool

Returns `true` if unstable features should be enabled for the compiler we’re building.

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#### pub(crate) fn in_tree_crates( &self, root: &str, target: Option<TargetSelection>, ) -> Vec<&Crate>

Returns a Vec of all the dependencies of the given root crate, including transitive dependencies and the root itself. Only includes “local” crates (those in the local source tree, not from a registry).

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#### pub(crate) fn read_stamp_file( &self, stamp: &Path, ) -> Vec<(PathBuf, DependencyType)>

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#### pub fn copy_link(&self, src: &Path, dst: &Path)

Links a file from `src` to `dst`. Attempts to use hard links if possible, falling back to copying. You can neither rely on this being a copy nor it being a link, so do not write to dst.

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#### pub(crate) fn copy_link_internal( &self, src: &Path, dst: &Path, dereference_symlinks: bool, )

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#### pub fn cp_link_r(&self, src: &Path, dst: &Path)

Links the `src` directory recursively to `dst`. Both are assumed to exist when this function is called. Will attempt to use hard links if possible and fall back to copying.

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#### pub fn cp_link_filtered( &self, src: &Path, dst: &Path, filter: &dyn Fn(&Path) -> bool, )

Copies the `src` directory recursively to `dst`. Both are assumed to exist when this function is called. Will attempt to use hard links if possible and fall back to copying. Unwanted files or directories can be skipped by returning `false` from the filter function.

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#### pub(crate) fn cp_link_filtered_recurse( &self, src: &Path, dst: &Path, relative: &Path, filter: &dyn Fn(&Path) -> bool, )

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#### pub(crate) fn copy_link_to_folder(&self, src: &Path, dest_folder: &Path)

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#### pub(crate) fn install(&self, src: &Path, dstdir: &Path, perms: u32)

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#### pub(crate) fn read(&self, path: &Path) -> String

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#### pub(crate) fn create_dir(&self, dir: &Path)

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#### pub(crate) fn remove_dir(&self, dir: &Path)

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#### pub(crate) fn read_dir(&self, dir: &Path) -> impl Iterator<Item = DirEntry>

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#### pub(crate) fn symlink_file<P: AsRef<Path>, Q: AsRef<Path>>( &self, src: P, link: Q, ) -> Result<()>

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#### pub(crate) fn ninja(&self) -> bool

Returns if config.ninja is enabled, and checks for ninja existence, exiting with a nicer error message if not.

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#### pub fn colored_stdout<R, F: FnOnce(&mut dyn WriteColor) -> R>(&self, f: F) -> R

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#### pub fn colored_stderr<R, F: FnOnce(&mut dyn WriteColor) -> R>(&self, f: F) -> R

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#### pub(crate) fn colored_stream_inner<R, F, C>( &self, constructor: C, is_tty: bool, f: F, ) -> R
where C: Fn(ColorChoice) -> StandardStream, F: FnOnce(&mut dyn WriteColor) -> R,

## Trait Implementations§

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### impl Clone for Build

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#### fn clone(&self) -> Build

Returns a copy of the value. Read more
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#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more

## Auto Trait Implementations§

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### impl !Freeze for Build

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### impl !RefUnwindSafe for Build

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### impl Send for Build

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### impl !Sync for Build

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### impl Unpin for Build

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### impl UnwindSafe for Build

## Blanket Implementations§

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### impl<T> Any for T
where T: 'static + ?Sized,

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#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
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### impl<T> Borrow<T> for T
where T: ?Sized,

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#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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### impl<T> BorrowMut<T> for T
where T: ?Sized,

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#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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### impl<T> CloneToUninit for T
where T: Clone,

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#### default unsafe fn clone_to_uninit(&self, dst: *mut T)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dst`. Read more
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### impl<T> From<T> for T

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#### fn from(t: T) -> T

Returns the argument unchanged.

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### impl<T, U> Into<U> for T
where U: From<T>,

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#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

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### impl<T> Pointable for T

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#### const ALIGN: usize = _

The alignment of pointer.
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#### type Init = T

The type for initializers.
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#### unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
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#### unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
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#### unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
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#### unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
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### impl<T> Same for T

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#### type Output = T

Should always be `Self`
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### impl<T> ToOwned for T
where T: Clone,

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#### type Owned = T

The resulting type after obtaining ownership.
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#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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### impl<T, U> TryFrom<U> for T
where U: Into<T>,

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#### type Error = Infallible

The type returned in the event of a conversion error.
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#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.

## Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain `repr(...)` attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 3368 bytes