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-rw-r--r--src/bootstrap/config.rs2104
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diff --git a/src/bootstrap/config.rs b/src/bootstrap/config.rs
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--- a/src/bootstrap/config.rs
+++ /dev/null
@@ -1,2104 +0,0 @@
-//! Serialized configuration of a build.
-//!
-//! This module implements parsing `config.toml` configuration files to tweak
-//! how the build runs.
-
-#[cfg(test)]
-mod tests;
-
-use std::cell::{Cell, RefCell};
-use std::cmp;
-use std::collections::{HashMap, HashSet};
-use std::env;
-use std::fmt::{self, Display};
-use std::fs;
-use std::io::IsTerminal;
-use std::path::{Path, PathBuf};
-use std::process::Command;
-use std::str::FromStr;
-
-use crate::cache::{Interned, INTERNER};
-use crate::cc_detect::{ndk_compiler, Language};
-use crate::channel::{self, GitInfo};
-use crate::compile::CODEGEN_BACKEND_PREFIX;
-pub use crate::flags::Subcommand;
-use crate::flags::{Color, Flags, Warnings};
-use crate::util::{exe, output, t};
-use build_helper::exit;
-use once_cell::sync::OnceCell;
-use semver::Version;
-use serde::{Deserialize, Deserializer};
-use serde_derive::Deserialize;
-
-macro_rules! check_ci_llvm {
- ($name:expr) => {
- assert!(
- $name.is_none(),
- "setting {} is incompatible with download-ci-llvm.",
- stringify!($name)
- );
- };
-}
-
-#[derive(Clone, Default)]
-pub enum DryRun {
- /// This isn't a dry run.
- #[default]
- Disabled,
- /// This is a dry run enabled by bootstrap itself, so it can verify that no work is done.
- SelfCheck,
- /// This is a dry run enabled by the `--dry-run` flag.
- UserSelected,
-}
-
-#[derive(Copy, Clone, Default, PartialEq, Eq)]
-pub enum DebuginfoLevel {
- #[default]
- None,
- LineTablesOnly,
- Limited,
- Full,
-}
-
-// NOTE: can't derive(Deserialize) because the intermediate trip through toml::Value only
-// deserializes i64, and derive() only generates visit_u64
-impl<'de> Deserialize<'de> for DebuginfoLevel {
- fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
- where
- D: Deserializer<'de>,
- {
- use serde::de::Error;
-
- Ok(match Deserialize::deserialize(deserializer)? {
- StringOrInt::String("none") | StringOrInt::Int(0) => DebuginfoLevel::None,
- StringOrInt::String("line-tables-only") => DebuginfoLevel::LineTablesOnly,
- StringOrInt::String("limited") | StringOrInt::Int(1) => DebuginfoLevel::Limited,
- StringOrInt::String("full") | StringOrInt::Int(2) => DebuginfoLevel::Full,
- StringOrInt::Int(n) => {
- let other = serde::de::Unexpected::Signed(n);
- return Err(D::Error::invalid_value(other, &"expected 0, 1, or 2"));
- }
- StringOrInt::String(s) => {
- let other = serde::de::Unexpected::Str(s);
- return Err(D::Error::invalid_value(
- other,
- &"expected none, line-tables-only, limited, or full",
- ));
- }
- })
- }
-}
-
-/// Suitable for passing to `-C debuginfo`
-impl Display for DebuginfoLevel {
- fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
- use DebuginfoLevel::*;
- f.write_str(match self {
- None => "0",
- LineTablesOnly => "line-tables-only",
- Limited => "1",
- Full => "2",
- })
- }
-}
-
-/// Global configuration for the entire build and/or bootstrap.
-///
-/// This structure is parsed from `config.toml`, and some of the fields are inferred from `git` or build-time parameters.
-///
-/// Note that this structure is not decoded directly into, but rather it is
-/// filled out from the decoded forms of the structs below. For documentation
-/// each field, see the corresponding fields in
-/// `config.example.toml`.
-#[derive(Default, Clone)]
-pub struct Config {
- pub changelog_seen: Option<usize>,
- pub ccache: Option<String>,
- /// Call Build::ninja() instead of this.
- pub ninja_in_file: bool,
- pub verbose: usize,
- pub submodules: Option<bool>,
- pub compiler_docs: bool,
- pub library_docs_private_items: bool,
- pub docs_minification: bool,
- pub docs: bool,
- pub locked_deps: bool,
- pub vendor: bool,
- pub target_config: HashMap<TargetSelection, Target>,
- pub full_bootstrap: bool,
- pub extended: bool,
- pub tools: Option<HashSet<String>>,
- pub sanitizers: bool,
- pub profiler: bool,
- pub omit_git_hash: bool,
- pub skip: Vec<PathBuf>,
- pub include_default_paths: bool,
- pub rustc_error_format: Option<String>,
- pub json_output: bool,
- pub test_compare_mode: bool,
- pub color: Color,
- pub patch_binaries_for_nix: Option<bool>,
- pub stage0_metadata: Stage0Metadata,
-
- pub stdout_is_tty: bool,
- pub stderr_is_tty: bool,
-
- pub on_fail: Option<String>,
- pub stage: u32,
- pub keep_stage: Vec<u32>,
- pub keep_stage_std: Vec<u32>,
- pub src: PathBuf,
- /// defaults to `config.toml`
- pub config: Option<PathBuf>,
- pub jobs: Option<u32>,
- pub cmd: Subcommand,
- pub incremental: bool,
- pub dry_run: DryRun,
- /// Arguments appearing after `--` to be forwarded to tools,
- /// e.g. `--fix-broken` or test arguments.
- pub free_args: Vec<String>,
-
- /// `None` if we shouldn't download CI compiler artifacts, or the commit to download if we should.
- #[cfg(not(test))]
- download_rustc_commit: Option<String>,
- #[cfg(test)]
- pub download_rustc_commit: Option<String>,
-
- pub deny_warnings: bool,
- pub backtrace_on_ice: bool,
-
- // llvm codegen options
- pub llvm_assertions: bool,
- pub llvm_tests: bool,
- pub llvm_plugins: bool,
- pub llvm_optimize: bool,
- pub llvm_thin_lto: bool,
- pub llvm_release_debuginfo: bool,
- pub llvm_static_stdcpp: bool,
- /// `None` if `llvm_from_ci` is true and we haven't yet downloaded llvm.
- #[cfg(not(test))]
- llvm_link_shared: Cell<Option<bool>>,
- #[cfg(test)]
- pub llvm_link_shared: Cell<Option<bool>>,
- pub llvm_clang_cl: Option<String>,
- pub llvm_targets: Option<String>,
- pub llvm_experimental_targets: Option<String>,
- pub llvm_link_jobs: Option<u32>,
- pub llvm_version_suffix: Option<String>,
- pub llvm_use_linker: Option<String>,
- pub llvm_allow_old_toolchain: bool,
- pub llvm_polly: bool,
- pub llvm_clang: bool,
- pub llvm_enable_warnings: bool,
- pub llvm_from_ci: bool,
- pub llvm_build_config: HashMap<String, String>,
-
- pub use_lld: bool,
- pub lld_enabled: bool,
- pub llvm_tools_enabled: bool,
-
- pub llvm_cflags: Option<String>,
- pub llvm_cxxflags: Option<String>,
- pub llvm_ldflags: Option<String>,
- pub llvm_use_libcxx: bool,
-
- // rust codegen options
- pub rust_optimize: RustOptimize,
- pub rust_codegen_units: Option<u32>,
- pub rust_codegen_units_std: Option<u32>,
- pub rust_debug_assertions: bool,
- pub rust_debug_assertions_std: bool,
- pub rust_overflow_checks: bool,
- pub rust_overflow_checks_std: bool,
- pub rust_debug_logging: bool,
- pub rust_debuginfo_level_rustc: DebuginfoLevel,
- pub rust_debuginfo_level_std: DebuginfoLevel,
- pub rust_debuginfo_level_tools: DebuginfoLevel,
- pub rust_debuginfo_level_tests: DebuginfoLevel,
- pub rust_split_debuginfo: SplitDebuginfo,
- pub rust_rpath: bool,
- pub rustc_parallel: bool,
- pub rustc_default_linker: Option<String>,
- pub rust_optimize_tests: bool,
- pub rust_dist_src: bool,
- pub rust_codegen_backends: Vec<Interned<String>>,
- pub rust_verify_llvm_ir: bool,
- pub rust_thin_lto_import_instr_limit: Option<u32>,
- pub rust_remap_debuginfo: bool,
- pub rust_new_symbol_mangling: Option<bool>,
- pub rust_profile_use: Option<String>,
- pub rust_profile_generate: Option<String>,
- pub rust_lto: RustcLto,
- pub rust_validate_mir_opts: Option<u32>,
- pub llvm_profile_use: Option<String>,
- pub llvm_profile_generate: bool,
- pub llvm_libunwind_default: Option<LlvmLibunwind>,
-
- pub reproducible_artifacts: Vec<String>,
-
- pub build: TargetSelection,
- pub hosts: Vec<TargetSelection>,
- pub targets: Vec<TargetSelection>,
- pub local_rebuild: bool,
- pub jemalloc: bool,
- pub control_flow_guard: bool,
-
- // dist misc
- pub dist_sign_folder: Option<PathBuf>,
- pub dist_upload_addr: Option<String>,
- pub dist_compression_formats: Option<Vec<String>>,
- pub dist_compression_profile: String,
- pub dist_include_mingw_linker: bool,
-
- // libstd features
- pub backtrace: bool, // support for RUST_BACKTRACE
-
- // misc
- pub low_priority: bool,
- pub channel: String,
- pub description: Option<String>,
- pub verbose_tests: bool,
- pub save_toolstates: Option<PathBuf>,
- pub print_step_timings: bool,
- pub print_step_rusage: bool,
- pub missing_tools: bool,
-
- // Fallback musl-root for all targets
- pub musl_root: Option<PathBuf>,
- pub prefix: Option<PathBuf>,
- pub sysconfdir: Option<PathBuf>,
- pub datadir: Option<PathBuf>,
- pub docdir: Option<PathBuf>,
- pub bindir: PathBuf,
- pub libdir: Option<PathBuf>,
- pub mandir: Option<PathBuf>,
- pub codegen_tests: bool,
- pub nodejs: Option<PathBuf>,
- pub npm: Option<PathBuf>,
- pub gdb: Option<PathBuf>,
- pub python: Option<PathBuf>,
- pub reuse: Option<PathBuf>,
- pub cargo_native_static: bool,
- pub configure_args: Vec<String>,
- pub out: PathBuf,
- pub rust_info: channel::GitInfo,
-
- // These are either the stage0 downloaded binaries or the locally installed ones.
- pub initial_cargo: PathBuf,
- pub initial_rustc: PathBuf,
-
- #[cfg(not(test))]
- initial_rustfmt: RefCell<RustfmtState>,
- #[cfg(test)]
- pub initial_rustfmt: RefCell<RustfmtState>,
-
- pub paths: Vec<PathBuf>,
-}
-
-#[derive(Default, Deserialize, Clone)]
-pub struct Stage0Metadata {
- pub compiler: CompilerMetadata,
- pub config: Stage0Config,
- pub checksums_sha256: HashMap<String, String>,
- pub rustfmt: Option<RustfmtMetadata>,
-}
-#[derive(Default, Deserialize, Clone)]
-pub struct CompilerMetadata {
- pub date: String,
- pub version: String,
-}
-
-#[derive(Default, Deserialize, Clone)]
-pub struct Stage0Config {
- pub dist_server: String,
- pub artifacts_server: String,
- pub artifacts_with_llvm_assertions_server: String,
- pub git_merge_commit_email: String,
- pub nightly_branch: String,
-}
-#[derive(Default, Deserialize, Clone)]
-pub struct RustfmtMetadata {
- pub date: String,
- pub version: String,
-}
-
-#[derive(Clone, Debug, Default)]
-pub enum RustfmtState {
- SystemToolchain(PathBuf),
- Downloaded(PathBuf),
- Unavailable,
- #[default]
- LazyEvaluated,
-}
-
-#[derive(Debug, Default, Clone, Copy, PartialEq)]
-pub enum LlvmLibunwind {
- #[default]
- No,
- InTree,
- System,
-}
-
-impl FromStr for LlvmLibunwind {
- type Err = String;
-
- fn from_str(value: &str) -> Result<Self, Self::Err> {
- match value {
- "no" => Ok(Self::No),
- "in-tree" => Ok(Self::InTree),
- "system" => Ok(Self::System),
- invalid => Err(format!("Invalid value '{invalid}' for rust.llvm-libunwind config.")),
- }
- }
-}
-
-#[derive(Default, Copy, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
-pub enum SplitDebuginfo {
- Packed,
- Unpacked,
- #[default]
- Off,
-}
-
-impl std::str::FromStr for SplitDebuginfo {
- type Err = ();
-
- fn from_str(s: &str) -> Result<Self, Self::Err> {
- match s {
- "packed" => Ok(SplitDebuginfo::Packed),
- "unpacked" => Ok(SplitDebuginfo::Unpacked),
- "off" => Ok(SplitDebuginfo::Off),
- _ => Err(()),
- }
- }
-}
-
-impl SplitDebuginfo {
- /// Returns the default `-Csplit-debuginfo` value for the current target. See the comment for
- /// `rust.split-debuginfo` in `config.example.toml`.
- fn default_for_platform(target: &str) -> Self {
- if target.contains("apple") {
- SplitDebuginfo::Unpacked
- } else if target.contains("windows") {
- SplitDebuginfo::Packed
- } else {
- SplitDebuginfo::Off
- }
- }
-}
-
-/// LTO mode used for compiling rustc itself.
-#[derive(Default, Clone, PartialEq, Debug)]
-pub enum RustcLto {
- Off,
- #[default]
- ThinLocal,
- Thin,
- Fat,
-}
-
-impl std::str::FromStr for RustcLto {
- type Err = String;
-
- fn from_str(s: &str) -> Result<Self, Self::Err> {
- match s {
- "thin-local" => Ok(RustcLto::ThinLocal),
- "thin" => Ok(RustcLto::Thin),
- "fat" => Ok(RustcLto::Fat),
- "off" => Ok(RustcLto::Off),
- _ => Err(format!("Invalid value for rustc LTO: {s}")),
- }
- }
-}
-
-#[derive(Copy, Clone, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
-pub struct TargetSelection {
- pub triple: Interned<String>,
- file: Option<Interned<String>>,
- synthetic: bool,
-}
-
-/// Newtype over `Vec<TargetSelection>` so we can implement custom parsing logic
-#[derive(Clone, Default, PartialEq, Eq, PartialOrd, Ord, Hash, Debug)]
-pub struct TargetSelectionList(Vec<TargetSelection>);
-
-pub fn target_selection_list(s: &str) -> Result<TargetSelectionList, String> {
- Ok(TargetSelectionList(
- s.split(",").filter(|s| !s.is_empty()).map(TargetSelection::from_user).collect(),
- ))
-}
-
-impl TargetSelection {
- pub fn from_user(selection: &str) -> Self {
- let path = Path::new(selection);
-
- let (triple, file) = if path.exists() {
- let triple = path
- .file_stem()
- .expect("Target specification file has no file stem")
- .to_str()
- .expect("Target specification file stem is not UTF-8");
-
- (triple, Some(selection))
- } else {
- (selection, None)
- };
-
- let triple = INTERNER.intern_str(triple);
- let file = file.map(|f| INTERNER.intern_str(f));
-
- Self { triple, file, synthetic: false }
- }
-
- pub fn create_synthetic(triple: &str, file: &str) -> Self {
- Self {
- triple: INTERNER.intern_str(triple),
- file: Some(INTERNER.intern_str(file)),
- synthetic: true,
- }
- }
-
- pub fn rustc_target_arg(&self) -> &str {
- self.file.as_ref().unwrap_or(&self.triple)
- }
-
- pub fn contains(&self, needle: &str) -> bool {
- self.triple.contains(needle)
- }
-
- pub fn starts_with(&self, needle: &str) -> bool {
- self.triple.starts_with(needle)
- }
-
- pub fn ends_with(&self, needle: &str) -> bool {
- self.triple.ends_with(needle)
- }
-
- // See src/bootstrap/synthetic_targets.rs
- pub fn is_synthetic(&self) -> bool {
- self.synthetic
- }
-}
-
-impl fmt::Display for TargetSelection {
- fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
- write!(f, "{}", self.triple)?;
- if let Some(file) = self.file {
- write!(f, "({file})")?;
- }
- Ok(())
- }
-}
-
-impl fmt::Debug for TargetSelection {
- fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
- write!(f, "{self}")
- }
-}
-
-impl PartialEq<&str> for TargetSelection {
- fn eq(&self, other: &&str) -> bool {
- self.triple == *other
- }
-}
-
-/// Per-target configuration stored in the global configuration structure.
-#[derive(Default, Clone)]
-pub struct Target {
- /// Some(path to llvm-config) if using an external LLVM.
- pub llvm_config: Option<PathBuf>,
- pub llvm_has_rust_patches: Option<bool>,
- /// Some(path to FileCheck) if one was specified.
- pub llvm_filecheck: Option<PathBuf>,
- pub llvm_libunwind: Option<LlvmLibunwind>,
- pub cc: Option<PathBuf>,
- pub cxx: Option<PathBuf>,
- pub ar: Option<PathBuf>,
- pub ranlib: Option<PathBuf>,
- pub default_linker: Option<PathBuf>,
- pub linker: Option<PathBuf>,
- pub ndk: Option<PathBuf>,
- pub sanitizers: Option<bool>,
- pub profiler: Option<StringOrBool>,
- pub rpath: Option<bool>,
- pub crt_static: Option<bool>,
- pub musl_root: Option<PathBuf>,
- pub musl_libdir: Option<PathBuf>,
- pub wasi_root: Option<PathBuf>,
- pub qemu_rootfs: Option<PathBuf>,
- pub no_std: bool,
-}
-
-impl Target {
- pub fn from_triple(triple: &str) -> Self {
- let mut target: Self = Default::default();
- if triple.contains("-none") || triple.contains("nvptx") || triple.contains("switch") {
- target.no_std = true;
- }
- target
- }
-}
-/// Structure of the `config.toml` file that configuration is read from.
-///
-/// This structure uses `Decodable` to automatically decode a TOML configuration
-/// file into this format, and then this is traversed and written into the above
-/// `Config` structure.
-#[derive(Deserialize, Default)]
-#[serde(deny_unknown_fields, rename_all = "kebab-case")]
-struct TomlConfig {
- changelog_seen: Option<usize>,
- build: Option<Build>,
- install: Option<Install>,
- llvm: Option<Llvm>,
- rust: Option<Rust>,
- target: Option<HashMap<String, TomlTarget>>,
- dist: Option<Dist>,
- profile: Option<String>,
-}
-
-/// Describes how to handle conflicts in merging two [`TomlConfig`]
-#[derive(Copy, Clone, Debug)]
-enum ReplaceOpt {
- /// Silently ignore a duplicated value
- IgnoreDuplicate,
- /// Override the current value, even if it's `Some`
- Override,
- /// Exit with an error on duplicate values
- ErrorOnDuplicate,
-}
-
-trait Merge {
- fn merge(&mut self, other: Self, replace: ReplaceOpt);
-}
-
-impl Merge for TomlConfig {
- fn merge(
- &mut self,
- TomlConfig { build, install, llvm, rust, dist, target, profile: _, changelog_seen }: Self,
- replace: ReplaceOpt,
- ) {
- fn do_merge<T: Merge>(x: &mut Option<T>, y: Option<T>, replace: ReplaceOpt) {
- if let Some(new) = y {
- if let Some(original) = x {
- original.merge(new, replace);
- } else {
- *x = Some(new);
- }
- }
- }
- self.changelog_seen.merge(changelog_seen, replace);
- do_merge(&mut self.build, build, replace);
- do_merge(&mut self.install, install, replace);
- do_merge(&mut self.llvm, llvm, replace);
- do_merge(&mut self.rust, rust, replace);
- do_merge(&mut self.dist, dist, replace);
- assert!(target.is_none(), "merging target-specific config is not currently supported");
- }
-}
-
-// We are using a decl macro instead of a derive proc macro here to reduce the compile time of
-// rustbuild.
-macro_rules! define_config {
- ($(#[$attr:meta])* struct $name:ident {
- $($field:ident: Option<$field_ty:ty> = $field_key:literal,)*
- }) => {
- $(#[$attr])*
- struct $name {
- $($field: Option<$field_ty>,)*
- }
-
- impl Merge for $name {
- fn merge(&mut self, other: Self, replace: ReplaceOpt) {
- $(
- match replace {
- ReplaceOpt::IgnoreDuplicate => {
- if self.$field.is_none() {
- self.$field = other.$field;
- }
- },
- ReplaceOpt::Override => {
- if other.$field.is_some() {
- self.$field = other.$field;
- }
- }
- ReplaceOpt::ErrorOnDuplicate => {
- if other.$field.is_some() {
- if self.$field.is_some() {
- if cfg!(test) {
- panic!("overriding existing option")
- } else {
- eprintln!("overriding existing option: `{}`", stringify!($field));
- exit!(2);
- }
- } else {
- self.$field = other.$field;
- }
- }
- }
- }
- )*
- }
- }
-
- // The following is a trimmed version of what serde_derive generates. All parts not relevant
- // for toml deserialization have been removed. This reduces the binary size and improves
- // compile time of rustbuild.
- impl<'de> Deserialize<'de> for $name {
- fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
- where
- D: Deserializer<'de>,
- {
- struct Field;
- impl<'de> serde::de::Visitor<'de> for Field {
- type Value = $name;
- fn expecting(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
- f.write_str(concat!("struct ", stringify!($name)))
- }
-
- #[inline]
- fn visit_map<A>(self, mut map: A) -> Result<Self::Value, A::Error>
- where
- A: serde::de::MapAccess<'de>,
- {
- $(let mut $field: Option<$field_ty> = None;)*
- while let Some(key) =
- match serde::de::MapAccess::next_key::<String>(&mut map) {
- Ok(val) => val,
- Err(err) => {
- return Err(err);
- }
- }
- {
- match &*key {
- $($field_key => {
- if $field.is_some() {
- return Err(<A::Error as serde::de::Error>::duplicate_field(
- $field_key,
- ));
- }
- $field = match serde::de::MapAccess::next_value::<$field_ty>(
- &mut map,
- ) {
- Ok(val) => Some(val),
- Err(err) => {
- return Err(err);
- }
- };
- })*
- key => {
- return Err(serde::de::Error::unknown_field(key, FIELDS));
- }
- }
- }
- Ok($name { $($field),* })
- }
- }
- const FIELDS: &'static [&'static str] = &[
- $($field_key,)*
- ];
- Deserializer::deserialize_struct(
- deserializer,
- stringify!($name),
- FIELDS,
- Field,
- )
- }
- }
- }
-}
-
-impl<T> Merge for Option<T> {
- fn merge(&mut self, other: Self, replace: ReplaceOpt) {
- match replace {
- ReplaceOpt::IgnoreDuplicate => {
- if self.is_none() {
- *self = other;
- }
- }
- ReplaceOpt::Override => {
- if other.is_some() {
- *self = other;
- }
- }
- ReplaceOpt::ErrorOnDuplicate => {
- if other.is_some() {
- if self.is_some() {
- if cfg!(test) {
- panic!("overriding existing option")
- } else {
- eprintln!("overriding existing option");
- exit!(2);
- }
- } else {
- *self = other;
- }
- }
- }
- }
- }
-}
-
-define_config! {
- /// TOML representation of various global build decisions.
- #[derive(Default)]
- struct Build {
- build: Option<String> = "build",
- host: Option<Vec<String>> = "host",
- target: Option<Vec<String>> = "target",
- build_dir: Option<String> = "build-dir",
- cargo: Option<String> = "cargo",
- rustc: Option<String> = "rustc",
- rustfmt: Option<PathBuf> = "rustfmt",
- docs: Option<bool> = "docs",
- compiler_docs: Option<bool> = "compiler-docs",
- library_docs_private_items: Option<bool> = "library-docs-private-items",
- docs_minification: Option<bool> = "docs-minification",
- submodules: Option<bool> = "submodules",
- gdb: Option<String> = "gdb",
- nodejs: Option<String> = "nodejs",
- npm: Option<String> = "npm",
- python: Option<String> = "python",
- reuse: Option<String> = "reuse",
- locked_deps: Option<bool> = "locked-deps",
- vendor: Option<bool> = "vendor",
- full_bootstrap: Option<bool> = "full-bootstrap",
- extended: Option<bool> = "extended",
- tools: Option<HashSet<String>> = "tools",
- verbose: Option<usize> = "verbose",
- sanitizers: Option<bool> = "sanitizers",
- profiler: Option<bool> = "profiler",
- cargo_native_static: Option<bool> = "cargo-native-static",
- low_priority: Option<bool> = "low-priority",
- configure_args: Option<Vec<String>> = "configure-args",
- local_rebuild: Option<bool> = "local-rebuild",
- print_step_timings: Option<bool> = "print-step-timings",
- print_step_rusage: Option<bool> = "print-step-rusage",
- check_stage: Option<u32> = "check-stage",
- doc_stage: Option<u32> = "doc-stage",
- build_stage: Option<u32> = "build-stage",
- test_stage: Option<u32> = "test-stage",
- install_stage: Option<u32> = "install-stage",
- dist_stage: Option<u32> = "dist-stage",
- bench_stage: Option<u32> = "bench-stage",
- patch_binaries_for_nix: Option<bool> = "patch-binaries-for-nix",
- // NOTE: only parsed by bootstrap.py, `--feature build-metrics` enables metrics unconditionally
- metrics: Option<bool> = "metrics",
- }
-}
-
-define_config! {
- /// TOML representation of various global install decisions.
- struct Install {
- prefix: Option<String> = "prefix",
- sysconfdir: Option<String> = "sysconfdir",
- docdir: Option<String> = "docdir",
- bindir: Option<String> = "bindir",
- libdir: Option<String> = "libdir",
- mandir: Option<String> = "mandir",
- datadir: Option<String> = "datadir",
- }
-}
-
-define_config! {
- /// TOML representation of how the LLVM build is configured.
- struct Llvm {
- optimize: Option<bool> = "optimize",
- thin_lto: Option<bool> = "thin-lto",
- release_debuginfo: Option<bool> = "release-debuginfo",
- assertions: Option<bool> = "assertions",
- tests: Option<bool> = "tests",
- plugins: Option<bool> = "plugins",
- ccache: Option<StringOrBool> = "ccache",
- static_libstdcpp: Option<bool> = "static-libstdcpp",
- ninja: Option<bool> = "ninja",
- targets: Option<String> = "targets",
- experimental_targets: Option<String> = "experimental-targets",
- link_jobs: Option<u32> = "link-jobs",
- link_shared: Option<bool> = "link-shared",
- version_suffix: Option<String> = "version-suffix",
- clang_cl: Option<String> = "clang-cl",
- cflags: Option<String> = "cflags",
- cxxflags: Option<String> = "cxxflags",
- ldflags: Option<String> = "ldflags",
- use_libcxx: Option<bool> = "use-libcxx",
- use_linker: Option<String> = "use-linker",
- allow_old_toolchain: Option<bool> = "allow-old-toolchain",
- polly: Option<bool> = "polly",
- clang: Option<bool> = "clang",
- enable_warnings: Option<bool> = "enable-warnings",
- download_ci_llvm: Option<StringOrBool> = "download-ci-llvm",
- build_config: Option<HashMap<String, String>> = "build-config",
- }
-}
-
-define_config! {
- struct Dist {
- sign_folder: Option<String> = "sign-folder",
- gpg_password_file: Option<String> = "gpg-password-file",
- upload_addr: Option<String> = "upload-addr",
- src_tarball: Option<bool> = "src-tarball",
- missing_tools: Option<bool> = "missing-tools",
- compression_formats: Option<Vec<String>> = "compression-formats",
- compression_profile: Option<String> = "compression-profile",
- include_mingw_linker: Option<bool> = "include-mingw-linker",
- }
-}
-
-#[derive(Clone, Debug, Deserialize)]
-#[serde(untagged)]
-pub enum StringOrBool {
- String(String),
- Bool(bool),
-}
-
-impl Default for StringOrBool {
- fn default() -> StringOrBool {
- StringOrBool::Bool(false)
- }
-}
-
-impl StringOrBool {
- fn is_string_or_true(&self) -> bool {
- matches!(self, Self::String(_) | Self::Bool(true))
- }
-}
-
-#[derive(Clone, Debug, PartialEq, Eq)]
-pub enum RustOptimize {
- String(String),
- Int(u8),
- Bool(bool),
-}
-
-impl Default for RustOptimize {
- fn default() -> RustOptimize {
- RustOptimize::Bool(false)
- }
-}
-
-impl<'de> Deserialize<'de> for RustOptimize {
- fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
- where
- D: Deserializer<'de>,
- {
- deserializer.deserialize_any(OptimizeVisitor)
- }
-}
-
-struct OptimizeVisitor;
-
-impl<'de> serde::de::Visitor<'de> for OptimizeVisitor {
- type Value = RustOptimize;
-
- fn expecting(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result {
- formatter.write_str(r#"one of: 0, 1, 2, 3, "s", "z", true, false"#)
- }
-
- fn visit_str<E>(self, value: &str) -> Result<Self::Value, E>
- where
- E: serde::de::Error,
- {
- if ["s", "z"].iter().find(|x| **x == value).is_some() {
- Ok(RustOptimize::String(value.to_string()))
- } else {
- Err(format_optimize_error_msg(value)).map_err(serde::de::Error::custom)
- }
- }
-
- fn visit_i64<E>(self, value: i64) -> Result<Self::Value, E>
- where
- E: serde::de::Error,
- {
- if matches!(value, 0..=3) {
- Ok(RustOptimize::Int(value as u8))
- } else {
- Err(format_optimize_error_msg(value)).map_err(serde::de::Error::custom)
- }
- }
-
- fn visit_bool<E>(self, value: bool) -> Result<Self::Value, E>
- where
- E: serde::de::Error,
- {
- Ok(RustOptimize::Bool(value))
- }
-}
-
-fn format_optimize_error_msg(v: impl std::fmt::Display) -> String {
- format!(
- r#"unrecognized option for rust optimize: "{v}", expected one of 0, 1, 2, 3, "s", "z", true, false"#
- )
-}
-
-impl RustOptimize {
- pub(crate) fn is_release(&self) -> bool {
- match &self {
- RustOptimize::Bool(true) | RustOptimize::String(_) => true,
- RustOptimize::Int(i) => *i > 0,
- RustOptimize::Bool(false) => false,
- }
- }
-
- pub(crate) fn get_opt_level(&self) -> Option<String> {
- match &self {
- RustOptimize::String(s) => Some(s.clone()),
- RustOptimize::Int(i) => Some(i.to_string()),
- RustOptimize::Bool(_) => None,
- }
- }
-}
-
-#[derive(Deserialize)]
-#[serde(untagged)]
-enum StringOrInt<'a> {
- String(&'a str),
- Int(i64),
-}
-define_config! {
- /// TOML representation of how the Rust build is configured.
- struct Rust {
- optimize: Option<RustOptimize> = "optimize",
- debug: Option<bool> = "debug",
- codegen_units: Option<u32> = "codegen-units",
- codegen_units_std: Option<u32> = "codegen-units-std",
- debug_assertions: Option<bool> = "debug-assertions",
- debug_assertions_std: Option<bool> = "debug-assertions-std",
- overflow_checks: Option<bool> = "overflow-checks",
- overflow_checks_std: Option<bool> = "overflow-checks-std",
- debug_logging: Option<bool> = "debug-logging",
- debuginfo_level: Option<DebuginfoLevel> = "debuginfo-level",
- debuginfo_level_rustc: Option<DebuginfoLevel> = "debuginfo-level-rustc",
- debuginfo_level_std: Option<DebuginfoLevel> = "debuginfo-level-std",
- debuginfo_level_tools: Option<DebuginfoLevel> = "debuginfo-level-tools",
- debuginfo_level_tests: Option<DebuginfoLevel> = "debuginfo-level-tests",
- split_debuginfo: Option<String> = "split-debuginfo",
- run_dsymutil: Option<bool> = "run-dsymutil",
- backtrace: Option<bool> = "backtrace",
- incremental: Option<bool> = "incremental",
- parallel_compiler: Option<bool> = "parallel-compiler",
- default_linker: Option<String> = "default-linker",
- channel: Option<String> = "channel",
- description: Option<String> = "description",
- musl_root: Option<String> = "musl-root",
- rpath: Option<bool> = "rpath",
- verbose_tests: Option<bool> = "verbose-tests",
- optimize_tests: Option<bool> = "optimize-tests",
- codegen_tests: Option<bool> = "codegen-tests",
- omit_git_hash: Option<bool> = "omit-git-hash",
- dist_src: Option<bool> = "dist-src",
- save_toolstates: Option<String> = "save-toolstates",
- codegen_backends: Option<Vec<String>> = "codegen-backends",
- lld: Option<bool> = "lld",
- use_lld: Option<bool> = "use-lld",
- llvm_tools: Option<bool> = "llvm-tools",
- deny_warnings: Option<bool> = "deny-warnings",
- backtrace_on_ice: Option<bool> = "backtrace-on-ice",
- verify_llvm_ir: Option<bool> = "verify-llvm-ir",
- thin_lto_import_instr_limit: Option<u32> = "thin-lto-import-instr-limit",
- remap_debuginfo: Option<bool> = "remap-debuginfo",
- jemalloc: Option<bool> = "jemalloc",
- test_compare_mode: Option<bool> = "test-compare-mode",
- llvm_libunwind: Option<String> = "llvm-libunwind",
- control_flow_guard: Option<bool> = "control-flow-guard",
- new_symbol_mangling: Option<bool> = "new-symbol-mangling",
- profile_generate: Option<String> = "profile-generate",
- profile_use: Option<String> = "profile-use",
- // ignored; this is set from an env var set by bootstrap.py
- download_rustc: Option<StringOrBool> = "download-rustc",
- lto: Option<String> = "lto",
- validate_mir_opts: Option<u32> = "validate-mir-opts",
- }
-}
-
-define_config! {
- /// TOML representation of how each build target is configured.
- struct TomlTarget {
- cc: Option<String> = "cc",
- cxx: Option<String> = "cxx",
- ar: Option<String> = "ar",
- ranlib: Option<String> = "ranlib",
- default_linker: Option<PathBuf> = "default-linker",
- linker: Option<String> = "linker",
- llvm_config: Option<String> = "llvm-config",
- llvm_has_rust_patches: Option<bool> = "llvm-has-rust-patches",
- llvm_filecheck: Option<String> = "llvm-filecheck",
- llvm_libunwind: Option<String> = "llvm-libunwind",
- android_ndk: Option<String> = "android-ndk",
- sanitizers: Option<bool> = "sanitizers",
- profiler: Option<StringOrBool> = "profiler",
- rpath: Option<bool> = "rpath",
- crt_static: Option<bool> = "crt-static",
- musl_root: Option<String> = "musl-root",
- musl_libdir: Option<String> = "musl-libdir",
- wasi_root: Option<String> = "wasi-root",
- qemu_rootfs: Option<String> = "qemu-rootfs",
- no_std: Option<bool> = "no-std",
- }
-}
-
-impl Config {
- pub fn default_opts() -> Config {
- let mut config = Config::default();
- config.llvm_optimize = true;
- config.ninja_in_file = true;
- config.llvm_static_stdcpp = false;
- config.backtrace = true;
- config.rust_optimize = RustOptimize::Bool(true);
- config.rust_optimize_tests = true;
- config.submodules = None;
- config.docs = true;
- config.docs_minification = true;
- config.rust_rpath = true;
- config.channel = "dev".to_string();
- config.codegen_tests = true;
- config.rust_dist_src = true;
- config.rust_codegen_backends = vec![INTERNER.intern_str("llvm")];
- config.deny_warnings = true;
- config.bindir = "bin".into();
- config.dist_include_mingw_linker = true;
- config.dist_compression_profile = "fast".into();
-
- config.stdout_is_tty = std::io::stdout().is_terminal();
- config.stderr_is_tty = std::io::stderr().is_terminal();
-
- // set by build.rs
- config.build = TargetSelection::from_user(&env!("BUILD_TRIPLE"));
-
- let manifest_dir = PathBuf::from(env!("CARGO_MANIFEST_DIR"));
- // Undo `src/bootstrap`
- config.src = manifest_dir.parent().unwrap().parent().unwrap().to_owned();
- config.out = PathBuf::from("build");
-
- config
- }
-
- pub fn parse(args: &[String]) -> Config {
- #[cfg(test)]
- fn get_toml(_: &Path) -> TomlConfig {
- TomlConfig::default()
- }
-
- #[cfg(not(test))]
- fn get_toml(file: &Path) -> TomlConfig {
- let contents =
- t!(fs::read_to_string(file), format!("config file {} not found", file.display()));
- // Deserialize to Value and then TomlConfig to prevent the Deserialize impl of
- // TomlConfig and sub types to be monomorphized 5x by toml.
- toml::from_str(&contents)
- .and_then(|table: toml::Value| TomlConfig::deserialize(table))
- .unwrap_or_else(|err| {
- eprintln!("failed to parse TOML configuration '{}': {err}", file.display());
- exit!(2);
- })
- }
- Self::parse_inner(args, get_toml)
- }
-
- fn parse_inner(args: &[String], get_toml: impl Fn(&Path) -> TomlConfig) -> Config {
- let mut flags = Flags::parse(&args);
- let mut config = Config::default_opts();
-
- // Set flags.
- config.paths = std::mem::take(&mut flags.paths);
- config.skip = flags.skip.into_iter().chain(flags.exclude).collect();
- config.include_default_paths = flags.include_default_paths;
- config.rustc_error_format = flags.rustc_error_format;
- config.json_output = flags.json_output;
- config.on_fail = flags.on_fail;
- config.jobs = Some(threads_from_config(flags.jobs as u32));
- config.cmd = flags.cmd;
- config.incremental = flags.incremental;
- config.dry_run = if flags.dry_run { DryRun::UserSelected } else { DryRun::Disabled };
- config.keep_stage = flags.keep_stage;
- config.keep_stage_std = flags.keep_stage_std;
- config.color = flags.color;
- config.free_args = std::mem::take(&mut flags.free_args);
- config.llvm_profile_use = flags.llvm_profile_use;
- config.llvm_profile_generate = flags.llvm_profile_generate;
-
- // Infer the rest of the configuration.
-
- // Infer the source directory. This is non-trivial because we want to support a downloaded bootstrap binary,
- // running on a completely machine from where it was compiled.
- let mut cmd = Command::new("git");
- // NOTE: we cannot support running from outside the repository because the only path we have available
- // is set at compile time, which can be wrong if bootstrap was downloaded from source.
- // We still support running outside the repository if we find we aren't in a git directory.
- cmd.arg("rev-parse").arg("--show-toplevel");
- // Discard stderr because we expect this to fail when building from a tarball.
- let output = cmd
- .stderr(std::process::Stdio::null())
- .output()
- .ok()
- .and_then(|output| if output.status.success() { Some(output) } else { None });
- if let Some(output) = output {
- let git_root = String::from_utf8(output.stdout).unwrap();
- // We need to canonicalize this path to make sure it uses backslashes instead of forward slashes.
- let git_root = PathBuf::from(git_root.trim()).canonicalize().unwrap();
- let s = git_root.to_str().unwrap();
-
- // Bootstrap is quite bad at handling /? in front of paths
- let src = match s.strip_prefix("\\\\?\\") {
- Some(p) => PathBuf::from(p),
- None => PathBuf::from(git_root),
- };
- // If this doesn't have at least `stage0.json`, we guessed wrong. This can happen when,
- // for example, the build directory is inside of another unrelated git directory.
- // In that case keep the original `CARGO_MANIFEST_DIR` handling.
- //
- // NOTE: this implies that downloadable bootstrap isn't supported when the build directory is outside
- // the source directory. We could fix that by setting a variable from all three of python, ./x, and x.ps1.
- if src.join("src").join("stage0.json").exists() {
- config.src = src;
- }
- } else {
- // We're building from a tarball, not git sources.
- // We don't support pre-downloaded bootstrap in this case.
- }
-
- if cfg!(test) {
- // Use the build directory of the original x.py invocation, so that we can set `initial_rustc` properly.
- config.out = Path::new(
- &env::var_os("CARGO_TARGET_DIR").expect("cargo test directly is not supported"),
- )
- .parent()
- .unwrap()
- .to_path_buf();
- }
-
- let stage0_json = t!(std::fs::read(&config.src.join("src").join("stage0.json")));
-
- config.stage0_metadata = t!(serde_json::from_slice::<Stage0Metadata>(&stage0_json));
-
- // Read from `--config`, then `RUST_BOOTSTRAP_CONFIG`, then `./config.toml`, then `config.toml` in the root directory.
- let toml_path = flags
- .config
- .clone()
- .or_else(|| env::var_os("RUST_BOOTSTRAP_CONFIG").map(PathBuf::from));
- let using_default_path = toml_path.is_none();
- let mut toml_path = toml_path.unwrap_or_else(|| PathBuf::from("config.toml"));
- if using_default_path && !toml_path.exists() {
- toml_path = config.src.join(toml_path);
- }
-
- // Give a hard error if `--config` or `RUST_BOOTSTRAP_CONFIG` are set to a missing path,
- // but not if `config.toml` hasn't been created.
- let mut toml = if !using_default_path || toml_path.exists() {
- config.config = Some(toml_path.clone());
- get_toml(&toml_path)
- } else {
- config.config = None;
- TomlConfig::default()
- };
-
- if let Some(include) = &toml.profile {
- // Allows creating alias for profile names, allowing
- // profiles to be renamed while maintaining back compatibility
- // Keep in sync with `profile_aliases` in bootstrap.py
- let profile_aliases = HashMap::from([("user", "dist")]);
- let include = match profile_aliases.get(include.as_str()) {
- Some(alias) => alias,
- None => include.as_str(),
- };
- let mut include_path = config.src.clone();
- include_path.push("src");
- include_path.push("bootstrap");
- include_path.push("defaults");
- include_path.push(format!("config.{include}.toml"));
- let included_toml = get_toml(&include_path);
- toml.merge(included_toml, ReplaceOpt::IgnoreDuplicate);
- }
-
- let mut override_toml = TomlConfig::default();
- for option in flags.set.iter() {
- fn get_table(option: &str) -> Result<TomlConfig, toml::de::Error> {
- toml::from_str(&option)
- .and_then(|table: toml::Value| TomlConfig::deserialize(table))
- }
-
- let mut err = match get_table(option) {
- Ok(v) => {
- override_toml.merge(v, ReplaceOpt::ErrorOnDuplicate);
- continue;
- }
- Err(e) => e,
- };
- // We want to be able to set string values without quotes,
- // like in `configure.py`. Try adding quotes around the right hand side
- if let Some((key, value)) = option.split_once("=") {
- if !value.contains('"') {
- match get_table(&format!(r#"{key}="{value}""#)) {
- Ok(v) => {
- override_toml.merge(v, ReplaceOpt::ErrorOnDuplicate);
- continue;
- }
- Err(e) => err = e,
- }
- }
- }
- eprintln!("failed to parse override `{option}`: `{err}");
- exit!(2)
- }
- toml.merge(override_toml, ReplaceOpt::Override);
-
- config.changelog_seen = toml.changelog_seen;
-
- let build = toml.build.unwrap_or_default();
- if let Some(file_build) = build.build {
- config.build = TargetSelection::from_user(&file_build);
- };
-
- set(&mut config.out, flags.build_dir.or_else(|| build.build_dir.map(PathBuf::from)));
- // NOTE: Bootstrap spawns various commands with different working directories.
- // To avoid writing to random places on the file system, `config.out` needs to be an absolute path.
- if !config.out.is_absolute() {
- // `canonicalize` requires the path to already exist. Use our vendored copy of `absolute` instead.
- config.out = crate::util::absolute(&config.out);
- }
-
- config.initial_rustc = if let Some(rustc) = build.rustc {
- // FIXME(#115065): re-enable this check
- // config.check_build_rustc_version(&rustc);
- PathBuf::from(rustc)
- } else {
- config.download_beta_toolchain();
- config.out.join(config.build.triple).join("stage0/bin/rustc")
- };
-
- config.initial_cargo = build
- .cargo
- .map(|cargo| {
- t!(PathBuf::from(cargo).canonicalize(), "`initial_cargo` not found on disk")
- })
- .unwrap_or_else(|| config.out.join(config.build.triple).join("stage0/bin/cargo"));
-
- // NOTE: it's important this comes *after* we set `initial_rustc` just above.
- if config.dry_run() {
- let dir = config.out.join("tmp-dry-run");
- t!(fs::create_dir_all(&dir));
- config.out = dir;
- }
-
- config.hosts = if let Some(TargetSelectionList(arg_host)) = flags.host {
- arg_host
- } else if let Some(file_host) = build.host {
- file_host.iter().map(|h| TargetSelection::from_user(h)).collect()
- } else {
- vec![config.build]
- };
- config.targets = if let Some(TargetSelectionList(arg_target)) = flags.target {
- arg_target
- } else if let Some(file_target) = build.target {
- file_target.iter().map(|h| TargetSelection::from_user(h)).collect()
- } else {
- // If target is *not* configured, then default to the host
- // toolchains.
- config.hosts.clone()
- };
-
- config.nodejs = build.nodejs.map(PathBuf::from);
- config.npm = build.npm.map(PathBuf::from);
- config.gdb = build.gdb.map(PathBuf::from);
- config.python = build.python.map(PathBuf::from);
- config.reuse = build.reuse.map(PathBuf::from);
- config.submodules = build.submodules;
- set(&mut config.low_priority, build.low_priority);
- set(&mut config.compiler_docs, build.compiler_docs);
- set(&mut config.library_docs_private_items, build.library_docs_private_items);
- set(&mut config.docs_minification, build.docs_minification);
- set(&mut config.docs, build.docs);
- set(&mut config.locked_deps, build.locked_deps);
- set(&mut config.vendor, build.vendor);
- set(&mut config.full_bootstrap, build.full_bootstrap);
- set(&mut config.extended, build.extended);
- config.tools = build.tools;
- set(&mut config.verbose, build.verbose);
- set(&mut config.sanitizers, build.sanitizers);
- set(&mut config.profiler, build.profiler);
- set(&mut config.cargo_native_static, build.cargo_native_static);
- set(&mut config.configure_args, build.configure_args);
- set(&mut config.local_rebuild, build.local_rebuild);
- set(&mut config.print_step_timings, build.print_step_timings);
- set(&mut config.print_step_rusage, build.print_step_rusage);
- config.patch_binaries_for_nix = build.patch_binaries_for_nix;
-
- config.verbose = cmp::max(config.verbose, flags.verbose as usize);
-
- if let Some(install) = toml.install {
- config.prefix = install.prefix.map(PathBuf::from);
- config.sysconfdir = install.sysconfdir.map(PathBuf::from);
- config.datadir = install.datadir.map(PathBuf::from);
- config.docdir = install.docdir.map(PathBuf::from);
- set(&mut config.bindir, install.bindir.map(PathBuf::from));
- config.libdir = install.libdir.map(PathBuf::from);
- config.mandir = install.mandir.map(PathBuf::from);
- }
-
- // Store off these values as options because if they're not provided
- // we'll infer default values for them later
- let mut llvm_assertions = None;
- let mut llvm_tests = None;
- let mut llvm_plugins = None;
- let mut debug = None;
- let mut debug_assertions = None;
- let mut debug_assertions_std = None;
- let mut overflow_checks = None;
- let mut overflow_checks_std = None;
- let mut debug_logging = None;
- let mut debuginfo_level = None;
- let mut debuginfo_level_rustc = None;
- let mut debuginfo_level_std = None;
- let mut debuginfo_level_tools = None;
- let mut debuginfo_level_tests = None;
- let mut optimize = None;
- let mut omit_git_hash = None;
-
- if let Some(rust) = toml.rust {
- set(&mut config.channel, rust.channel);
-
- config.download_rustc_commit = config.download_ci_rustc_commit(rust.download_rustc);
- // This list is incomplete, please help by expanding it!
- if config.download_rustc_commit.is_some() {
- // We need the channel used by the downloaded compiler to match the one we set for rustdoc;
- // otherwise rustdoc-ui tests break.
- let ci_channel = t!(fs::read_to_string(config.src.join("src/ci/channel")));
- let ci_channel = ci_channel.trim_end();
- if config.channel != ci_channel
- && !(config.channel == "dev" && ci_channel == "nightly")
- {
- panic!(
- "setting rust.channel={} is incompatible with download-rustc",
- config.channel
- );
- }
- }
-
- debug = rust.debug;
- debug_assertions = rust.debug_assertions;
- debug_assertions_std = rust.debug_assertions_std;
- overflow_checks = rust.overflow_checks;
- overflow_checks_std = rust.overflow_checks_std;
- debug_logging = rust.debug_logging;
- debuginfo_level = rust.debuginfo_level;
- debuginfo_level_rustc = rust.debuginfo_level_rustc;
- debuginfo_level_std = rust.debuginfo_level_std;
- debuginfo_level_tools = rust.debuginfo_level_tools;
- debuginfo_level_tests = rust.debuginfo_level_tests;
-
- config.rust_split_debuginfo = rust
- .split_debuginfo
- .as_deref()
- .map(SplitDebuginfo::from_str)
- .map(|v| v.expect("invalid value for rust.split_debuginfo"))
- .unwrap_or(SplitDebuginfo::default_for_platform(&config.build.triple));
- optimize = rust.optimize;
- omit_git_hash = rust.omit_git_hash;
- config.rust_new_symbol_mangling = rust.new_symbol_mangling;
- set(&mut config.rust_optimize_tests, rust.optimize_tests);
- set(&mut config.codegen_tests, rust.codegen_tests);
- set(&mut config.rust_rpath, rust.rpath);
- set(&mut config.jemalloc, rust.jemalloc);
- set(&mut config.test_compare_mode, rust.test_compare_mode);
- set(&mut config.backtrace, rust.backtrace);
- config.description = rust.description;
- set(&mut config.rust_dist_src, rust.dist_src);
- set(&mut config.verbose_tests, rust.verbose_tests);
- // in the case "false" is set explicitly, do not overwrite the command line args
- if let Some(true) = rust.incremental {
- config.incremental = true;
- }
- set(&mut config.use_lld, rust.use_lld);
- set(&mut config.lld_enabled, rust.lld);
- set(&mut config.llvm_tools_enabled, rust.llvm_tools);
- config.rustc_parallel = rust.parallel_compiler.unwrap_or(false);
- config.rustc_default_linker = rust.default_linker;
- config.musl_root = rust.musl_root.map(PathBuf::from);
- config.save_toolstates = rust.save_toolstates.map(PathBuf::from);
- set(
- &mut config.deny_warnings,
- match flags.warnings {
- Warnings::Deny => Some(true),
- Warnings::Warn => Some(false),
- Warnings::Default => rust.deny_warnings,
- },
- );
- set(&mut config.backtrace_on_ice, rust.backtrace_on_ice);
- set(&mut config.rust_verify_llvm_ir, rust.verify_llvm_ir);
- config.rust_thin_lto_import_instr_limit = rust.thin_lto_import_instr_limit;
- set(&mut config.rust_remap_debuginfo, rust.remap_debuginfo);
- set(&mut config.control_flow_guard, rust.control_flow_guard);
- config.llvm_libunwind_default = rust
- .llvm_libunwind
- .map(|v| v.parse().expect("failed to parse rust.llvm-libunwind"));
-
- if let Some(ref backends) = rust.codegen_backends {
- let available_backends = vec!["llvm", "cranelift", "gcc"];
-
- config.rust_codegen_backends = backends.iter().map(|s| {
- if let Some(backend) = s.strip_prefix(CODEGEN_BACKEND_PREFIX) {
- if available_backends.contains(&backend) {
- panic!("Invalid value '{s}' for 'rust.codegen-backends'. Instead, please use '{backend}'.");
- } else {
- println!("help: '{s}' for 'rust.codegen-backends' might fail. \
- Codegen backends are mostly defined without the '{CODEGEN_BACKEND_PREFIX}' prefix. \
- In this case, it would be referred to as '{backend}'.");
- }
- }
-
- INTERNER.intern_str(s)
- }).collect();
- }
-
- config.rust_codegen_units = rust.codegen_units.map(threads_from_config);
- config.rust_codegen_units_std = rust.codegen_units_std.map(threads_from_config);
- config.rust_profile_use = flags.rust_profile_use.or(rust.profile_use);
- config.rust_profile_generate = flags.rust_profile_generate.or(rust.profile_generate);
- config.rust_lto = rust
- .lto
- .as_deref()
- .map(|value| RustcLto::from_str(value).unwrap())
- .unwrap_or_default();
- config.rust_validate_mir_opts = rust.validate_mir_opts;
- } else {
- config.rust_profile_use = flags.rust_profile_use;
- config.rust_profile_generate = flags.rust_profile_generate;
- }
-
- config.reproducible_artifacts = flags.reproducible_artifact;
-
- // rust_info must be set before is_ci_llvm_available() is called.
- let default = config.channel == "dev";
- config.omit_git_hash = omit_git_hash.unwrap_or(default);
- config.rust_info = GitInfo::new(config.omit_git_hash, &config.src);
-
- if let Some(llvm) = toml.llvm {
- match llvm.ccache {
- Some(StringOrBool::String(ref s)) => config.ccache = Some(s.to_string()),
- Some(StringOrBool::Bool(true)) => {
- config.ccache = Some("ccache".to_string());
- }
- Some(StringOrBool::Bool(false)) | None => {}
- }
- set(&mut config.ninja_in_file, llvm.ninja);
- llvm_assertions = llvm.assertions;
- llvm_tests = llvm.tests;
- llvm_plugins = llvm.plugins;
- set(&mut config.llvm_optimize, llvm.optimize);
- set(&mut config.llvm_thin_lto, llvm.thin_lto);
- set(&mut config.llvm_release_debuginfo, llvm.release_debuginfo);
- set(&mut config.llvm_static_stdcpp, llvm.static_libstdcpp);
- if let Some(v) = llvm.link_shared {
- config.llvm_link_shared.set(Some(v));
- }
- config.llvm_targets = llvm.targets.clone();
- config.llvm_experimental_targets = llvm.experimental_targets.clone();
- config.llvm_link_jobs = llvm.link_jobs;
- config.llvm_version_suffix = llvm.version_suffix.clone();
- config.llvm_clang_cl = llvm.clang_cl.clone();
-
- config.llvm_cflags = llvm.cflags.clone();
- config.llvm_cxxflags = llvm.cxxflags.clone();
- config.llvm_ldflags = llvm.ldflags.clone();
- set(&mut config.llvm_use_libcxx, llvm.use_libcxx);
- config.llvm_use_linker = llvm.use_linker.clone();
- config.llvm_allow_old_toolchain = llvm.allow_old_toolchain.unwrap_or(false);
- config.llvm_polly = llvm.polly.unwrap_or(false);
- config.llvm_clang = llvm.clang.unwrap_or(false);
- config.llvm_enable_warnings = llvm.enable_warnings.unwrap_or(false);
- config.llvm_build_config = llvm.build_config.clone().unwrap_or(Default::default());
-
- let asserts = llvm_assertions.unwrap_or(false);
- config.llvm_from_ci = match llvm.download_ci_llvm {
- Some(StringOrBool::String(s)) => {
- assert_eq!(s, "if-available", "unknown option `{s}` for download-ci-llvm");
- crate::llvm::is_ci_llvm_available(&config, asserts)
- }
- Some(StringOrBool::Bool(b)) => b,
- None => {
- config.channel == "dev" && crate::llvm::is_ci_llvm_available(&config, asserts)
- }
- };
-
- if config.llvm_from_ci {
- // None of the LLVM options, except assertions, are supported
- // when using downloaded LLVM. We could just ignore these but
- // that's potentially confusing, so force them to not be
- // explicitly set. The defaults and CI defaults don't
- // necessarily match but forcing people to match (somewhat
- // arbitrary) CI configuration locally seems bad/hard.
- check_ci_llvm!(llvm.optimize);
- check_ci_llvm!(llvm.thin_lto);
- check_ci_llvm!(llvm.release_debuginfo);
- // CI-built LLVM can be either dynamic or static. We won't know until we download it.
- check_ci_llvm!(llvm.link_shared);
- check_ci_llvm!(llvm.static_libstdcpp);
- check_ci_llvm!(llvm.targets);
- check_ci_llvm!(llvm.experimental_targets);
- check_ci_llvm!(llvm.link_jobs);
- check_ci_llvm!(llvm.clang_cl);
- check_ci_llvm!(llvm.version_suffix);
- check_ci_llvm!(llvm.cflags);
- check_ci_llvm!(llvm.cxxflags);
- check_ci_llvm!(llvm.ldflags);
- check_ci_llvm!(llvm.use_libcxx);
- check_ci_llvm!(llvm.use_linker);
- check_ci_llvm!(llvm.allow_old_toolchain);
- check_ci_llvm!(llvm.polly);
- check_ci_llvm!(llvm.clang);
- check_ci_llvm!(llvm.build_config);
- check_ci_llvm!(llvm.plugins);
- }
-
- // NOTE: can never be hit when downloading from CI, since we call `check_ci_llvm!(thin_lto)` above.
- if config.llvm_thin_lto && llvm.link_shared.is_none() {
- // If we're building with ThinLTO on, by default we want to link
- // to LLVM shared, to avoid re-doing ThinLTO (which happens in
- // the link step) with each stage.
- config.llvm_link_shared.set(Some(true));
- }
- } else {
- config.llvm_from_ci =
- config.channel == "dev" && crate::llvm::is_ci_llvm_available(&config, false);
- }
-
- if let Some(t) = toml.target {
- for (triple, cfg) in t {
- let mut target = Target::from_triple(&triple);
-
- if let Some(ref s) = cfg.llvm_config {
- if config.download_rustc_commit.is_some() && triple == &*config.build.triple {
- panic!(
- "setting llvm_config for the host is incompatible with download-rustc"
- );
- }
- target.llvm_config = Some(config.src.join(s));
- }
- target.llvm_has_rust_patches = cfg.llvm_has_rust_patches;
- if let Some(ref s) = cfg.llvm_filecheck {
- target.llvm_filecheck = Some(config.src.join(s));
- }
- target.llvm_libunwind = cfg
- .llvm_libunwind
- .as_ref()
- .map(|v| v.parse().expect("failed to parse rust.llvm-libunwind"));
- if let Some(ref s) = cfg.android_ndk {
- target.ndk = Some(config.src.join(s));
- }
- if let Some(s) = cfg.no_std {
- target.no_std = s;
- }
- target.cc = cfg.cc.map(PathBuf::from).or_else(|| {
- target.ndk.as_ref().map(|ndk| ndk_compiler(Language::C, &triple, ndk))
- });
- target.cxx = cfg.cxx.map(PathBuf::from).or_else(|| {
- target.ndk.as_ref().map(|ndk| ndk_compiler(Language::CPlusPlus, &triple, ndk))
- });
- target.ar = cfg.ar.map(PathBuf::from);
- target.ranlib = cfg.ranlib.map(PathBuf::from);
- target.linker = cfg.linker.map(PathBuf::from);
- target.crt_static = cfg.crt_static;
- target.musl_root = cfg.musl_root.map(PathBuf::from);
- target.musl_libdir = cfg.musl_libdir.map(PathBuf::from);
- target.wasi_root = cfg.wasi_root.map(PathBuf::from);
- target.qemu_rootfs = cfg.qemu_rootfs.map(PathBuf::from);
- target.sanitizers = cfg.sanitizers;
- target.profiler = cfg.profiler;
- target.rpath = cfg.rpath;
-
- config.target_config.insert(TargetSelection::from_user(&triple), target);
- }
- }
-
- if config.llvm_from_ci {
- let triple = &config.build.triple;
- let ci_llvm_bin = config.ci_llvm_root().join("bin");
- let build_target = config
- .target_config
- .entry(config.build)
- .or_insert_with(|| Target::from_triple(&triple));
-
- check_ci_llvm!(build_target.llvm_config);
- check_ci_llvm!(build_target.llvm_filecheck);
- build_target.llvm_config = Some(ci_llvm_bin.join(exe("llvm-config", config.build)));
- build_target.llvm_filecheck = Some(ci_llvm_bin.join(exe("FileCheck", config.build)));
- }
-
- if let Some(t) = toml.dist {
- config.dist_sign_folder = t.sign_folder.map(PathBuf::from);
- config.dist_upload_addr = t.upload_addr;
- config.dist_compression_formats = t.compression_formats;
- set(&mut config.dist_compression_profile, t.compression_profile);
- set(&mut config.rust_dist_src, t.src_tarball);
- set(&mut config.missing_tools, t.missing_tools);
- set(&mut config.dist_include_mingw_linker, t.include_mingw_linker)
- }
-
- if let Some(r) = build.rustfmt {
- *config.initial_rustfmt.borrow_mut() = if r.exists() {
- RustfmtState::SystemToolchain(r)
- } else {
- RustfmtState::Unavailable
- };
- }
-
- // Now that we've reached the end of our configuration, infer the
- // default values for all options that we haven't otherwise stored yet.
-
- config.llvm_assertions = llvm_assertions.unwrap_or(false);
- config.llvm_tests = llvm_tests.unwrap_or(false);
- config.llvm_plugins = llvm_plugins.unwrap_or(false);
- config.rust_optimize = optimize.unwrap_or(RustOptimize::Bool(true));
-
- let default = debug == Some(true);
- config.rust_debug_assertions = debug_assertions.unwrap_or(default);
- config.rust_debug_assertions_std =
- debug_assertions_std.unwrap_or(config.rust_debug_assertions);
- config.rust_overflow_checks = overflow_checks.unwrap_or(default);
- config.rust_overflow_checks_std =
- overflow_checks_std.unwrap_or(config.rust_overflow_checks);
-
- config.rust_debug_logging = debug_logging.unwrap_or(config.rust_debug_assertions);
-
- let with_defaults = |debuginfo_level_specific: Option<_>| {
- debuginfo_level_specific.or(debuginfo_level).unwrap_or(if debug == Some(true) {
- DebuginfoLevel::Limited
- } else {
- DebuginfoLevel::None
- })
- };
- config.rust_debuginfo_level_rustc = with_defaults(debuginfo_level_rustc);
- config.rust_debuginfo_level_std = with_defaults(debuginfo_level_std);
- config.rust_debuginfo_level_tools = with_defaults(debuginfo_level_tools);
- config.rust_debuginfo_level_tests = debuginfo_level_tests.unwrap_or(DebuginfoLevel::None);
-
- let download_rustc = config.download_rustc_commit.is_some();
- // See https://github.com/rust-lang/compiler-team/issues/326
- config.stage = match config.cmd {
- Subcommand::Check { .. } => flags.stage.or(build.check_stage).unwrap_or(0),
- // `download-rustc` only has a speed-up for stage2 builds. Default to stage2 unless explicitly overridden.
- Subcommand::Doc { .. } => {
- flags.stage.or(build.doc_stage).unwrap_or(if download_rustc { 2 } else { 0 })
- }
- Subcommand::Build { .. } => {
- flags.stage.or(build.build_stage).unwrap_or(if download_rustc { 2 } else { 1 })
- }
- Subcommand::Test { .. } => {
- flags.stage.or(build.test_stage).unwrap_or(if download_rustc { 2 } else { 1 })
- }
- Subcommand::Bench { .. } => flags.stage.or(build.bench_stage).unwrap_or(2),
- Subcommand::Dist { .. } => flags.stage.or(build.dist_stage).unwrap_or(2),
- Subcommand::Install { .. } => flags.stage.or(build.install_stage).unwrap_or(2),
- // These are all bootstrap tools, which don't depend on the compiler.
- // The stage we pass shouldn't matter, but use 0 just in case.
- Subcommand::Clean { .. }
- | Subcommand::Clippy { .. }
- | Subcommand::Fix { .. }
- | Subcommand::Run { .. }
- | Subcommand::Setup { .. }
- | Subcommand::Format { .. }
- | Subcommand::Suggest { .. } => flags.stage.unwrap_or(0),
- };
-
- // CI should always run stage 2 builds, unless it specifically states otherwise
- #[cfg(not(test))]
- if flags.stage.is_none() && crate::CiEnv::current() != crate::CiEnv::None {
- match config.cmd {
- Subcommand::Test { .. }
- | Subcommand::Doc { .. }
- | Subcommand::Build { .. }
- | Subcommand::Bench { .. }
- | Subcommand::Dist { .. }
- | Subcommand::Install { .. } => {
- assert_eq!(
- config.stage, 2,
- "x.py should be run with `--stage 2` on CI, but was run with `--stage {}`",
- config.stage,
- );
- }
- Subcommand::Clean { .. }
- | Subcommand::Check { .. }
- | Subcommand::Clippy { .. }
- | Subcommand::Fix { .. }
- | Subcommand::Run { .. }
- | Subcommand::Setup { .. }
- | Subcommand::Format { .. }
- | Subcommand::Suggest { .. } => {}
- }
- }
-
- config
- }
-
- pub(crate) fn dry_run(&self) -> bool {
- match self.dry_run {
- DryRun::Disabled => false,
- DryRun::SelfCheck | DryRun::UserSelected => true,
- }
- }
-
- /// Runs a command, printing out nice contextual information if it fails.
- /// Exits if the command failed to execute at all, otherwise returns its
- /// `status.success()`.
- #[deprecated = "use `Builder::try_run` instead where possible"]
- pub(crate) fn try_run(&self, cmd: &mut Command) -> Result<(), ()> {
- if self.dry_run() {
- return Ok(());
- }
- self.verbose(&format!("running: {cmd:?}"));
- build_helper::util::try_run(cmd, self.is_verbose())
- }
-
- /// A git invocation which runs inside the source directory.
- ///
- /// Use this rather than `Command::new("git")` in order to support out-of-tree builds.
- pub(crate) fn git(&self) -> Command {
- let mut git = Command::new("git");
- git.current_dir(&self.src);
- git
- }
-
- pub(crate) fn test_args(&self) -> Vec<&str> {
- let mut test_args = match self.cmd {
- Subcommand::Test { ref test_args, .. } | Subcommand::Bench { ref test_args, .. } => {
- test_args.iter().flat_map(|s| s.split_whitespace()).collect()
- }
- _ => vec![],
- };
- test_args.extend(self.free_args.iter().map(|s| s.as_str()));
- test_args
- }
-
- pub(crate) fn args(&self) -> Vec<&str> {
- let mut args = match self.cmd {
- Subcommand::Run { ref args, .. } => {
- args.iter().flat_map(|s| s.split_whitespace()).collect()
- }
- _ => vec![],
- };
- args.extend(self.free_args.iter().map(|s| s.as_str()));
- args
- }
-
- /// Bootstrap embeds a version number into the name of shared libraries it uploads in CI.
- /// Return the version it would have used for the given commit.
- pub(crate) fn artifact_version_part(&self, commit: &str) -> String {
- let (channel, version) = if self.rust_info.is_managed_git_subrepository() {
- let mut channel = self.git();
- channel.arg("show").arg(format!("{commit}:src/ci/channel"));
- let channel = output(&mut channel);
- let mut version = self.git();
- version.arg("show").arg(format!("{commit}:src/version"));
- let version = output(&mut version);
- (channel.trim().to_owned(), version.trim().to_owned())
- } else {
- let channel = fs::read_to_string(self.src.join("src/ci/channel"));
- let version = fs::read_to_string(self.src.join("src/version"));
- match (channel, version) {
- (Ok(channel), Ok(version)) => {
- (channel.trim().to_owned(), version.trim().to_owned())
- }
- (channel, version) => {
- let src = self.src.display();
- eprintln!("error: failed to determine artifact channel and/or version");
- eprintln!(
- "help: consider using a git checkout or ensure these files are readable"
- );
- if let Err(channel) = channel {
- eprintln!("reading {src}/src/ci/channel failed: {channel:?}");
- }
- if let Err(version) = version {
- eprintln!("reading {src}/src/version failed: {version:?}");
- }
- panic!();
- }
- }
- };
-
- match channel.as_str() {
- "stable" => version,
- "beta" => channel,
- "nightly" => channel,
- other => unreachable!("{:?} is not recognized as a valid channel", other),
- }
- }
-
- /// Try to find the relative path of `bindir`, otherwise return it in full.
- pub fn bindir_relative(&self) -> &Path {
- let bindir = &self.bindir;
- if bindir.is_absolute() {
- // Try to make it relative to the prefix.
- if let Some(prefix) = &self.prefix {
- if let Ok(stripped) = bindir.strip_prefix(prefix) {
- return stripped;
- }
- }
- }
- bindir
- }
-
- /// Try to find the relative path of `libdir`.
- pub fn libdir_relative(&self) -> Option<&Path> {
- let libdir = self.libdir.as_ref()?;
- if libdir.is_relative() {
- Some(libdir)
- } else {
- // Try to make it relative to the prefix.
- libdir.strip_prefix(self.prefix.as_ref()?).ok()
- }
- }
-
- /// The absolute path to the downloaded LLVM artifacts.
- pub(crate) fn ci_llvm_root(&self) -> PathBuf {
- assert!(self.llvm_from_ci);
- self.out.join(&*self.build.triple).join("ci-llvm")
- }
-
- /// Directory where the extracted `rustc-dev` component is stored.
- pub(crate) fn ci_rustc_dir(&self) -> PathBuf {
- assert!(self.download_rustc());
- self.out.join(self.build.triple).join("ci-rustc")
- }
-
- /// Determine whether llvm should be linked dynamically.
- ///
- /// If `false`, llvm should be linked statically.
- /// This is computed on demand since LLVM might have to first be downloaded from CI.
- pub(crate) fn llvm_link_shared(&self) -> bool {
- let mut opt = self.llvm_link_shared.get();
- if opt.is_none() && self.dry_run() {
- // just assume static for now - dynamic linking isn't supported on all platforms
- return false;
- }
-
- let llvm_link_shared = *opt.get_or_insert_with(|| {
- if self.llvm_from_ci {
- self.maybe_download_ci_llvm();
- let ci_llvm = self.ci_llvm_root();
- let link_type = t!(
- std::fs::read_to_string(ci_llvm.join("link-type.txt")),
- format!("CI llvm missing: {}", ci_llvm.display())
- );
- link_type == "dynamic"
- } else {
- // unclear how thought-through this default is, but it maintains compatibility with
- // previous behavior
- false
- }
- });
- self.llvm_link_shared.set(opt);
- llvm_link_shared
- }
-
- /// Return whether we will use a downloaded, pre-compiled version of rustc, or just build from source.
- pub(crate) fn download_rustc(&self) -> bool {
- self.download_rustc_commit().is_some()
- }
-
- pub(crate) fn download_rustc_commit(&self) -> Option<&str> {
- static DOWNLOAD_RUSTC: OnceCell<Option<String>> = OnceCell::new();
- if self.dry_run() && DOWNLOAD_RUSTC.get().is_none() {
- // avoid trying to actually download the commit
- return self.download_rustc_commit.as_deref();
- }
-
- DOWNLOAD_RUSTC
- .get_or_init(|| match &self.download_rustc_commit {
- None => None,
- Some(commit) => {
- self.download_ci_rustc(commit);
- Some(commit.clone())
- }
- })
- .as_deref()
- }
-
- pub(crate) fn initial_rustfmt(&self) -> Option<PathBuf> {
- match &mut *self.initial_rustfmt.borrow_mut() {
- RustfmtState::SystemToolchain(p) | RustfmtState::Downloaded(p) => Some(p.clone()),
- RustfmtState::Unavailable => None,
- r @ RustfmtState::LazyEvaluated => {
- if self.dry_run() {
- return Some(PathBuf::new());
- }
- let path = self.maybe_download_rustfmt();
- *r = if let Some(p) = &path {
- RustfmtState::Downloaded(p.clone())
- } else {
- RustfmtState::Unavailable
- };
- path
- }
- }
- }
-
- pub fn verbose(&self, msg: &str) {
- if self.verbose > 0 {
- println!("{msg}");
- }
- }
-
- pub fn sanitizers_enabled(&self, target: TargetSelection) -> bool {
- self.target_config.get(&target).map(|t| t.sanitizers).flatten().unwrap_or(self.sanitizers)
- }
-
- pub fn any_sanitizers_enabled(&self) -> bool {
- self.target_config.values().any(|t| t.sanitizers == Some(true)) || self.sanitizers
- }
-
- pub fn profiler_path(&self, target: TargetSelection) -> Option<&str> {
- match self.target_config.get(&target)?.profiler.as_ref()? {
- StringOrBool::String(s) => Some(s),
- StringOrBool::Bool(_) => None,
- }
- }
-
- pub fn profiler_enabled(&self, target: TargetSelection) -> bool {
- self.target_config
- .get(&target)
- .and_then(|t| t.profiler.as_ref())
- .map(StringOrBool::is_string_or_true)
- .unwrap_or(self.profiler)
- }
-
- pub fn any_profiler_enabled(&self) -> bool {
- self.target_config.values().any(|t| matches!(&t.profiler, Some(p) if p.is_string_or_true()))
- || self.profiler
- }
-
- pub fn rpath_enabled(&self, target: TargetSelection) -> bool {
- self.target_config.get(&target).map(|t| t.rpath).flatten().unwrap_or(self.rust_rpath)
- }
-
- pub fn llvm_enabled(&self) -> bool {
- self.rust_codegen_backends.contains(&INTERNER.intern_str("llvm"))
- }
-
- pub fn llvm_libunwind(&self, target: TargetSelection) -> LlvmLibunwind {
- self.target_config
- .get(&target)
- .and_then(|t| t.llvm_libunwind)
- .or(self.llvm_libunwind_default)
- .unwrap_or(if target.contains("fuchsia") {
- LlvmLibunwind::InTree
- } else {
- LlvmLibunwind::No
- })
- }
-
- pub fn submodules(&self, rust_info: &GitInfo) -> bool {
- self.submodules.unwrap_or(rust_info.is_managed_git_subrepository())
- }
-
- pub fn default_codegen_backend(&self) -> Option<Interned<String>> {
- self.rust_codegen_backends.get(0).cloned()
- }
-
- pub fn check_build_rustc_version(&self, rustc_path: &str) {
- if self.dry_run() {
- return;
- }
-
- // check rustc version is same or lower with 1 apart from the building one
- let mut cmd = Command::new(rustc_path);
- cmd.arg("--version");
- let rustc_output = output(&mut cmd)
- .lines()
- .next()
- .unwrap()
- .split(' ')
- .nth(1)
- .unwrap()
- .split('-')
- .next()
- .unwrap()
- .to_owned();
- let rustc_version = Version::parse(&rustc_output.trim()).unwrap();
- let source_version =
- Version::parse(&fs::read_to_string(self.src.join("src/version")).unwrap().trim())
- .unwrap();
- if !(source_version == rustc_version
- || (source_version.major == rustc_version.major
- && (source_version.minor == rustc_version.minor
- || source_version.minor == rustc_version.minor + 1)))
- {
- let prev_version = format!("{}.{}.x", source_version.major, source_version.minor - 1);
- eprintln!(
- "Unexpected rustc version: {rustc_version}, we should use {prev_version}/{source_version} to build source with {source_version}"
- );
- exit!(1);
- }
- }
-
- /// Returns the commit to download, or `None` if we shouldn't download CI artifacts.
- fn download_ci_rustc_commit(&self, download_rustc: Option<StringOrBool>) -> Option<String> {
- // If `download-rustc` is not set, default to rebuilding.
- let if_unchanged = match download_rustc {
- None | Some(StringOrBool::Bool(false)) => return None,
- Some(StringOrBool::Bool(true)) => false,
- Some(StringOrBool::String(s)) if s == "if-unchanged" => true,
- Some(StringOrBool::String(other)) => {
- panic!("unrecognized option for download-rustc: {other}")
- }
- };
-
- // Handle running from a directory other than the top level
- let top_level = output(self.git().args(&["rev-parse", "--show-toplevel"]));
- let top_level = top_level.trim_end();
- let compiler = format!("{top_level}/compiler/");
- let library = format!("{top_level}/library/");
-
- // Look for a version to compare to based on the current commit.
- // Only commits merged by bors will have CI artifacts.
- let merge_base = output(
- self.git()
- .arg("rev-list")
- .arg(format!("--author={}", self.stage0_metadata.config.git_merge_commit_email))
- .args(&["-n1", "--first-parent", "HEAD"]),
- );
- let commit = merge_base.trim_end();
- if commit.is_empty() {
- println!("error: could not find commit hash for downloading rustc");
- println!("help: maybe your repository history is too shallow?");
- println!("help: consider disabling `download-rustc`");
- println!("help: or fetch enough history to include one upstream commit");
- crate::exit!(1);
- }
-
- // Warn if there were changes to the compiler or standard library since the ancestor commit.
- let has_changes = !t!(self
- .git()
- .args(&["diff-index", "--quiet", &commit, "--", &compiler, &library])
- .status())
- .success();
- if has_changes {
- if if_unchanged {
- if self.verbose > 0 {
- println!(
- "warning: saw changes to compiler/ or library/ since {commit}; \
- ignoring `download-rustc`"
- );
- }
- return None;
- }
- println!(
- "warning: `download-rustc` is enabled, but there are changes to \
- compiler/ or library/"
- );
- }
-
- Some(commit.to_string())
- }
-}
-
-fn set<T>(field: &mut T, val: Option<T>) {
- if let Some(v) = val {
- *field = v;
- }
-}
-
-fn threads_from_config(v: u32) -> u32 {
- match v {
- 0 => std::thread::available_parallelism().map_or(1, std::num::NonZeroUsize::get) as u32,
- n => n,
- }
-}
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-16 20:19:43 +0000