1 //! Serialized configuration of a build.
3 //! This module implements parsing `config.toml` configuration files to tweak
4 //! how the build runs.
7 use std::collections::{HashMap, HashSet};
9 use std::ffi::OsString;
12 use std::path::{Path, PathBuf};
15 use crate::cache::{Interned, INTERNER};
16 use crate::flags::Flags;
17 pub use crate::flags::Subcommand;
19 use serde::Deserialize;
21 /// Global configuration for the entire build and/or bootstrap.
23 /// This structure is derived from a combination of both `config.toml` and
24 /// `config.mk`. As of the time of this writing it's unlikely that `config.toml`
25 /// is used all that much, so this is primarily filled out by `config.mk` which
26 /// is generated from `./configure`.
28 /// Note that this structure is not decoded directly into, but rather it is
29 /// filled out from the decoded forms of the structs below. For documentation
30 /// each field, see the corresponding fields in
31 /// `config.toml.example`.
34 pub ccache: Option<String>,
35 /// Call Build::ninja() instead of this.
36 pub ninja_in_file: bool,
39 pub fast_submodules: bool,
40 pub compiler_docs: bool,
42 pub locked_deps: bool,
44 pub target_config: HashMap<TargetSelection, Target>,
45 pub full_bootstrap: bool,
47 pub tools: Option<HashSet<String>>,
51 pub exclude: Vec<PathBuf>,
52 pub rustc_error_format: Option<String>,
53 pub json_output: bool,
54 pub test_compare_mode: bool,
55 pub llvm_libunwind: bool,
57 pub skip_only_host_steps: bool,
59 pub on_fail: Option<String>,
60 pub stage: Option<u32>,
61 pub keep_stage: Vec<u32>,
63 pub jobs: Option<u32>,
65 pub incremental: bool,
68 pub deny_warnings: bool,
69 pub backtrace_on_ice: bool,
71 // llvm codegen options
72 pub llvm_skip_rebuild: bool,
73 pub llvm_assertions: bool,
74 pub llvm_optimize: bool,
75 pub llvm_thin_lto: bool,
76 pub llvm_release_debuginfo: bool,
77 pub llvm_version_check: bool,
78 pub llvm_static_stdcpp: bool,
79 pub llvm_link_shared: bool,
80 pub llvm_clang_cl: Option<String>,
81 pub llvm_targets: Option<String>,
82 pub llvm_experimental_targets: Option<String>,
83 pub llvm_link_jobs: Option<u32>,
84 pub llvm_version_suffix: Option<String>,
85 pub llvm_use_linker: Option<String>,
86 pub llvm_allow_old_toolchain: Option<bool>,
89 pub lld_enabled: bool,
90 pub llvm_tools_enabled: bool,
92 pub llvm_cflags: Option<String>,
93 pub llvm_cxxflags: Option<String>,
94 pub llvm_ldflags: Option<String>,
95 pub llvm_use_libcxx: bool,
97 // rust codegen options
98 pub rust_optimize: bool,
99 pub rust_codegen_units: Option<u32>,
100 pub rust_codegen_units_std: Option<u32>,
101 pub rust_debug_assertions: bool,
102 pub rust_debug_assertions_std: bool,
103 pub rust_debuginfo_level_rustc: u32,
104 pub rust_debuginfo_level_std: u32,
105 pub rust_debuginfo_level_tools: u32,
106 pub rust_debuginfo_level_tests: u32,
107 pub rust_rpath: bool,
108 pub rustc_parallel: bool,
109 pub rustc_default_linker: Option<String>,
110 pub rust_optimize_tests: bool,
111 pub rust_dist_src: bool,
112 pub rust_codegen_backends: Vec<Interned<String>>,
113 pub rust_verify_llvm_ir: bool,
114 pub rust_thin_lto_import_instr_limit: Option<u32>,
115 pub rust_remap_debuginfo: bool,
116 pub rust_new_symbol_mangling: bool,
118 pub build: TargetSelection,
119 pub hosts: Vec<TargetSelection>,
120 pub targets: Vec<TargetSelection>,
121 pub local_rebuild: bool,
123 pub control_flow_guard: bool,
126 pub dist_sign_folder: Option<PathBuf>,
127 pub dist_upload_addr: Option<String>,
128 pub dist_gpg_password_file: Option<PathBuf>,
131 pub backtrace: bool, // support for RUST_BACKTRACE
134 pub low_priority: bool,
136 pub verbose_tests: bool,
137 pub save_toolstates: Option<PathBuf>,
138 pub print_step_timings: bool,
139 pub missing_tools: bool,
141 // Fallback musl-root for all targets
142 pub musl_root: Option<PathBuf>,
143 pub prefix: Option<PathBuf>,
144 pub sysconfdir: Option<PathBuf>,
145 pub datadir: Option<PathBuf>,
146 pub docdir: Option<PathBuf>,
148 pub libdir: Option<PathBuf>,
149 pub mandir: Option<PathBuf>,
150 pub codegen_tests: bool,
151 pub nodejs: Option<PathBuf>,
152 pub gdb: Option<PathBuf>,
153 pub python: Option<PathBuf>,
154 pub cargo_native_static: bool,
155 pub configure_args: Vec<String>,
157 // These are either the stage0 downloaded binaries or the locally installed ones.
158 pub initial_cargo: PathBuf,
159 pub initial_rustc: PathBuf,
160 pub initial_rustfmt: Option<PathBuf>,
164 #[derive(Debug, Copy, Clone, Default, PartialEq, Eq, PartialOrd, Ord, Hash)]
165 pub struct TargetSelection {
166 pub triple: Interned<String>,
167 file: Option<Interned<String>>,
170 impl TargetSelection {
171 pub fn from_user(selection: &str) -> Self {
172 let path = Path::new(selection);
174 let (triple, file) = if path.exists() {
177 .expect("Target specification file has no file stem")
179 .expect("Target specification file stem is not UTF-8");
181 (triple, Some(selection))
186 let triple = INTERNER.intern_str(triple);
187 let file = file.map(|f| INTERNER.intern_str(f));
189 Self { triple, file }
192 pub fn rustc_target_arg(&self) -> &str {
193 self.file.as_ref().unwrap_or(&self.triple)
196 pub fn contains(&self, needle: &str) -> bool {
197 self.triple.contains(needle)
200 pub fn starts_with(&self, needle: &str) -> bool {
201 self.triple.starts_with(needle)
204 pub fn ends_with(&self, needle: &str) -> bool {
205 self.triple.ends_with(needle)
209 impl fmt::Display for TargetSelection {
210 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
211 write!(f, "{}", self.triple)?;
212 if let Some(file) = self.file {
213 write!(f, "({})", file)?;
219 impl PartialEq<&str> for TargetSelection {
220 fn eq(&self, other: &&str) -> bool {
221 self.triple == *other
225 /// Per-target configuration stored in the global configuration structure.
228 /// Some(path to llvm-config) if using an external LLVM.
229 pub llvm_config: Option<PathBuf>,
230 /// Some(path to FileCheck) if one was specified.
231 pub llvm_filecheck: Option<PathBuf>,
232 pub cc: Option<PathBuf>,
233 pub cxx: Option<PathBuf>,
234 pub ar: Option<PathBuf>,
235 pub ranlib: Option<PathBuf>,
236 pub linker: Option<PathBuf>,
237 pub ndk: Option<PathBuf>,
238 pub crt_static: Option<bool>,
239 pub musl_root: Option<PathBuf>,
240 pub musl_libdir: Option<PathBuf>,
241 pub wasi_root: Option<PathBuf>,
242 pub qemu_rootfs: Option<PathBuf>,
247 pub fn from_triple(triple: &str) -> Self {
248 let mut target: Self = Default::default();
249 if triple.contains("-none") || triple.contains("nvptx") {
250 target.no_std = true;
255 /// Structure of the `config.toml` file that configuration is read from.
257 /// This structure uses `Decodable` to automatically decode a TOML configuration
258 /// file into this format, and then this is traversed and written into the above
259 /// `Config` structure.
260 #[derive(Deserialize, Default)]
261 #[serde(deny_unknown_fields, rename_all = "kebab-case")]
263 build: Option<Build>,
264 install: Option<Install>,
267 target: Option<HashMap<String, TomlTarget>>,
271 /// TOML representation of various global build decisions.
272 #[derive(Deserialize, Default, Clone)]
273 #[serde(deny_unknown_fields, rename_all = "kebab-case")]
275 build: Option<String>,
280 // This is ignored, the rust code always gets the build directory from the `BUILD_DIR` env variable
281 build_dir: Option<String>,
282 cargo: Option<String>,
283 rustc: Option<String>,
284 rustfmt: Option<String>, /* allow bootstrap.py to use rustfmt key */
286 compiler_docs: Option<bool>,
287 submodules: Option<bool>,
288 fast_submodules: Option<bool>,
290 nodejs: Option<String>,
291 python: Option<String>,
292 locked_deps: Option<bool>,
293 vendor: Option<bool>,
294 full_bootstrap: Option<bool>,
295 extended: Option<bool>,
296 tools: Option<HashSet<String>>,
297 verbose: Option<usize>,
298 sanitizers: Option<bool>,
299 profiler: Option<bool>,
300 cargo_native_static: Option<bool>,
301 low_priority: Option<bool>,
302 configure_args: Option<Vec<String>>,
303 local_rebuild: Option<bool>,
304 print_step_timings: Option<bool>,
307 /// TOML representation of various global install decisions.
308 #[derive(Deserialize, Default, Clone)]
309 #[serde(deny_unknown_fields, rename_all = "kebab-case")]
311 prefix: Option<String>,
312 sysconfdir: Option<String>,
313 docdir: Option<String>,
314 bindir: Option<String>,
315 libdir: Option<String>,
316 mandir: Option<String>,
317 datadir: Option<String>,
319 // standard paths, currently unused
320 infodir: Option<String>,
321 localstatedir: Option<String>,
324 /// TOML representation of how the LLVM build is configured.
325 #[derive(Deserialize, Default)]
326 #[serde(deny_unknown_fields, rename_all = "kebab-case")]
328 skip_rebuild: Option<bool>,
329 optimize: Option<bool>,
330 thin_lto: Option<bool>,
331 release_debuginfo: Option<bool>,
332 assertions: Option<bool>,
333 ccache: Option<StringOrBool>,
334 version_check: Option<bool>,
335 static_libstdcpp: Option<bool>,
337 targets: Option<String>,
338 experimental_targets: Option<String>,
339 link_jobs: Option<u32>,
340 link_shared: Option<bool>,
341 version_suffix: Option<String>,
342 clang_cl: Option<String>,
343 cflags: Option<String>,
344 cxxflags: Option<String>,
345 ldflags: Option<String>,
346 use_libcxx: Option<bool>,
347 use_linker: Option<String>,
348 allow_old_toolchain: Option<bool>,
351 #[derive(Deserialize, Default, Clone)]
352 #[serde(deny_unknown_fields, rename_all = "kebab-case")]
354 sign_folder: Option<String>,
355 gpg_password_file: Option<String>,
356 upload_addr: Option<String>,
357 src_tarball: Option<bool>,
358 missing_tools: Option<bool>,
361 #[derive(Deserialize)]
368 impl Default for StringOrBool {
369 fn default() -> StringOrBool {
370 StringOrBool::Bool(false)
374 /// TOML representation of how the Rust build is configured.
375 #[derive(Deserialize, Default)]
376 #[serde(deny_unknown_fields, rename_all = "kebab-case")]
378 optimize: Option<bool>,
380 codegen_units: Option<u32>,
381 codegen_units_std: Option<u32>,
382 debug_assertions: Option<bool>,
383 debug_assertions_std: Option<bool>,
384 debuginfo_level: Option<u32>,
385 debuginfo_level_rustc: Option<u32>,
386 debuginfo_level_std: Option<u32>,
387 debuginfo_level_tools: Option<u32>,
388 debuginfo_level_tests: Option<u32>,
389 backtrace: Option<bool>,
390 incremental: Option<bool>,
391 parallel_compiler: Option<bool>,
392 default_linker: Option<String>,
393 channel: Option<String>,
394 musl_root: Option<String>,
396 verbose_tests: Option<bool>,
397 optimize_tests: Option<bool>,
398 codegen_tests: Option<bool>,
399 ignore_git: Option<bool>,
400 dist_src: Option<bool>,
401 save_toolstates: Option<String>,
402 codegen_backends: Option<Vec<String>>,
404 use_lld: Option<bool>,
405 llvm_tools: Option<bool>,
406 deny_warnings: Option<bool>,
407 backtrace_on_ice: Option<bool>,
408 verify_llvm_ir: Option<bool>,
409 thin_lto_import_instr_limit: Option<u32>,
410 remap_debuginfo: Option<bool>,
411 jemalloc: Option<bool>,
412 test_compare_mode: Option<bool>,
413 llvm_libunwind: Option<bool>,
414 control_flow_guard: Option<bool>,
415 new_symbol_mangling: Option<bool>,
418 /// TOML representation of how each build target is configured.
419 #[derive(Deserialize, Default)]
420 #[serde(deny_unknown_fields, rename_all = "kebab-case")]
425 ranlib: Option<String>,
426 linker: Option<String>,
427 llvm_config: Option<String>,
428 llvm_filecheck: Option<String>,
429 android_ndk: Option<String>,
430 crt_static: Option<bool>,
431 musl_root: Option<String>,
432 musl_libdir: Option<String>,
433 wasi_root: Option<String>,
434 qemu_rootfs: Option<String>,
435 no_std: Option<bool>,
439 fn path_from_python(var_key: &str) -> PathBuf {
440 match env::var_os(var_key) {
441 Some(var_val) => Self::normalize_python_path(var_val),
442 _ => panic!("expected '{}' to be set", var_key),
446 /// Normalizes paths from Python slightly. We don't trust paths from Python (#49785).
447 fn normalize_python_path(path: OsString) -> PathBuf {
448 Path::new(&path).components().collect()
451 pub fn default_opts() -> Config {
452 let mut config = Config::default();
453 config.llvm_optimize = true;
454 config.ninja_in_file = true;
455 config.llvm_version_check = true;
456 config.backtrace = true;
457 config.rust_optimize = true;
458 config.rust_optimize_tests = true;
459 config.submodules = true;
460 config.fast_submodules = true;
462 config.rust_rpath = true;
463 config.channel = "dev".to_string();
464 config.codegen_tests = true;
465 config.ignore_git = false;
466 config.rust_dist_src = true;
467 config.rust_codegen_backends = vec![INTERNER.intern_str("llvm")];
468 config.deny_warnings = true;
469 config.missing_tools = false;
471 // set by bootstrap.py
472 config.build = TargetSelection::from_user(&env::var("BUILD").expect("'BUILD' to be set"));
473 config.src = Config::path_from_python("SRC");
474 config.out = Config::path_from_python("BUILD_DIR");
476 config.initial_rustc = Config::path_from_python("RUSTC");
477 config.initial_cargo = Config::path_from_python("CARGO");
478 config.initial_rustfmt = env::var_os("RUSTFMT").map(Config::normalize_python_path);
483 pub fn parse(args: &[String]) -> Config {
484 let flags = Flags::parse(&args);
485 let file = flags.config.clone();
486 let mut config = Config::default_opts();
487 config.exclude = flags.exclude;
488 config.rustc_error_format = flags.rustc_error_format;
489 config.json_output = flags.json_output;
490 config.on_fail = flags.on_fail;
491 config.stage = flags.stage;
492 config.jobs = flags.jobs.map(threads_from_config);
493 config.cmd = flags.cmd;
494 config.incremental = flags.incremental;
495 config.dry_run = flags.dry_run;
496 config.keep_stage = flags.keep_stage;
497 config.bindir = "bin".into(); // default
498 if let Some(value) = flags.deny_warnings {
499 config.deny_warnings = value;
503 let dir = config.out.join("tmp-dry-run");
504 t!(fs::create_dir_all(&dir));
508 // If --target was specified but --host wasn't specified, don't run any host-only tests.
509 let has_hosts = !flags.host.is_empty();
510 let has_targets = !flags.target.is_empty();
511 config.skip_only_host_steps = !has_hosts && has_targets;
515 let contents = t!(fs::read_to_string(&file));
516 match toml::from_str(&contents) {
520 "failed to parse TOML configuration '{}': {}",
528 .unwrap_or_else(TomlConfig::default);
530 let build = toml.build.clone().unwrap_or_default();
531 // set by bootstrap.py
532 config.hosts.push(config.build);
533 for host in build.host.iter().map(|h| TargetSelection::from_user(h)) {
534 if !config.hosts.contains(&host) {
535 config.hosts.push(host);
542 .chain(build.target.iter().map(|h| TargetSelection::from_user(h)))
544 if !config.targets.contains(&target) {
545 config.targets.push(target);
548 config.hosts = if !flags.host.is_empty() { flags.host } else { config.hosts };
549 config.targets = if !flags.target.is_empty() { flags.target } else { config.targets };
551 config.nodejs = build.nodejs.map(PathBuf::from);
552 config.gdb = build.gdb.map(PathBuf::from);
553 config.python = build.python.map(PathBuf::from);
554 set(&mut config.low_priority, build.low_priority);
555 set(&mut config.compiler_docs, build.compiler_docs);
556 set(&mut config.docs, build.docs);
557 set(&mut config.submodules, build.submodules);
558 set(&mut config.fast_submodules, build.fast_submodules);
559 set(&mut config.locked_deps, build.locked_deps);
560 set(&mut config.vendor, build.vendor);
561 set(&mut config.full_bootstrap, build.full_bootstrap);
562 set(&mut config.extended, build.extended);
563 config.tools = build.tools;
564 set(&mut config.verbose, build.verbose);
565 set(&mut config.sanitizers, build.sanitizers);
566 set(&mut config.profiler, build.profiler);
567 set(&mut config.cargo_native_static, build.cargo_native_static);
568 set(&mut config.configure_args, build.configure_args);
569 set(&mut config.local_rebuild, build.local_rebuild);
570 set(&mut config.print_step_timings, build.print_step_timings);
571 config.verbose = cmp::max(config.verbose, flags.verbose);
573 if let Some(ref install) = toml.install {
574 config.prefix = install.prefix.clone().map(PathBuf::from);
575 config.sysconfdir = install.sysconfdir.clone().map(PathBuf::from);
576 config.datadir = install.datadir.clone().map(PathBuf::from);
577 config.docdir = install.docdir.clone().map(PathBuf::from);
578 set(&mut config.bindir, install.bindir.clone().map(PathBuf::from));
579 config.libdir = install.libdir.clone().map(PathBuf::from);
580 config.mandir = install.mandir.clone().map(PathBuf::from);
583 // We want the llvm-skip-rebuild flag to take precedence over the
584 // skip-rebuild config.toml option so we store it separately
585 // so that we can infer the right value
586 let mut llvm_skip_rebuild = flags.llvm_skip_rebuild;
588 // Store off these values as options because if they're not provided
589 // we'll infer default values for them later
590 let mut llvm_assertions = None;
591 let mut debug = None;
592 let mut debug_assertions = None;
593 let mut debug_assertions_std = None;
594 let mut debuginfo_level = None;
595 let mut debuginfo_level_rustc = None;
596 let mut debuginfo_level_std = None;
597 let mut debuginfo_level_tools = None;
598 let mut debuginfo_level_tests = None;
599 let mut optimize = None;
600 let mut ignore_git = None;
602 if let Some(ref llvm) = toml.llvm {
604 Some(StringOrBool::String(ref s)) => config.ccache = Some(s.to_string()),
605 Some(StringOrBool::Bool(true)) => {
606 config.ccache = Some("ccache".to_string());
608 Some(StringOrBool::Bool(false)) | None => {}
610 set(&mut config.ninja_in_file, llvm.ninja);
611 llvm_assertions = llvm.assertions;
612 llvm_skip_rebuild = llvm_skip_rebuild.or(llvm.skip_rebuild);
613 set(&mut config.llvm_optimize, llvm.optimize);
614 set(&mut config.llvm_thin_lto, llvm.thin_lto);
615 set(&mut config.llvm_release_debuginfo, llvm.release_debuginfo);
616 set(&mut config.llvm_version_check, llvm.version_check);
617 set(&mut config.llvm_static_stdcpp, llvm.static_libstdcpp);
618 set(&mut config.llvm_link_shared, llvm.link_shared);
619 config.llvm_targets = llvm.targets.clone();
620 config.llvm_experimental_targets = llvm.experimental_targets.clone();
621 config.llvm_link_jobs = llvm.link_jobs;
622 config.llvm_version_suffix = llvm.version_suffix.clone();
623 config.llvm_clang_cl = llvm.clang_cl.clone();
625 config.llvm_cflags = llvm.cflags.clone();
626 config.llvm_cxxflags = llvm.cxxflags.clone();
627 config.llvm_ldflags = llvm.ldflags.clone();
628 set(&mut config.llvm_use_libcxx, llvm.use_libcxx);
629 config.llvm_use_linker = llvm.use_linker.clone();
630 config.llvm_allow_old_toolchain = llvm.allow_old_toolchain;
633 if let Some(ref rust) = toml.rust {
635 debug_assertions = rust.debug_assertions;
636 debug_assertions_std = rust.debug_assertions_std;
637 debuginfo_level = rust.debuginfo_level;
638 debuginfo_level_rustc = rust.debuginfo_level_rustc;
639 debuginfo_level_std = rust.debuginfo_level_std;
640 debuginfo_level_tools = rust.debuginfo_level_tools;
641 debuginfo_level_tests = rust.debuginfo_level_tests;
642 optimize = rust.optimize;
643 ignore_git = rust.ignore_git;
644 set(&mut config.rust_new_symbol_mangling, rust.new_symbol_mangling);
645 set(&mut config.rust_optimize_tests, rust.optimize_tests);
646 set(&mut config.codegen_tests, rust.codegen_tests);
647 set(&mut config.rust_rpath, rust.rpath);
648 set(&mut config.jemalloc, rust.jemalloc);
649 set(&mut config.test_compare_mode, rust.test_compare_mode);
650 set(&mut config.llvm_libunwind, rust.llvm_libunwind);
651 set(&mut config.backtrace, rust.backtrace);
652 set(&mut config.channel, rust.channel.clone());
653 set(&mut config.rust_dist_src, rust.dist_src);
654 set(&mut config.verbose_tests, rust.verbose_tests);
655 // in the case "false" is set explicitly, do not overwrite the command line args
656 if let Some(true) = rust.incremental {
657 config.incremental = true;
659 set(&mut config.use_lld, rust.use_lld);
660 set(&mut config.lld_enabled, rust.lld);
661 set(&mut config.llvm_tools_enabled, rust.llvm_tools);
662 config.rustc_parallel = rust.parallel_compiler.unwrap_or(false);
663 config.rustc_default_linker = rust.default_linker.clone();
664 config.musl_root = rust.musl_root.clone().map(PathBuf::from);
665 config.save_toolstates = rust.save_toolstates.clone().map(PathBuf::from);
666 set(&mut config.deny_warnings, flags.deny_warnings.or(rust.deny_warnings));
667 set(&mut config.backtrace_on_ice, rust.backtrace_on_ice);
668 set(&mut config.rust_verify_llvm_ir, rust.verify_llvm_ir);
669 config.rust_thin_lto_import_instr_limit = rust.thin_lto_import_instr_limit;
670 set(&mut config.rust_remap_debuginfo, rust.remap_debuginfo);
671 set(&mut config.control_flow_guard, rust.control_flow_guard);
673 if let Some(ref backends) = rust.codegen_backends {
674 config.rust_codegen_backends =
675 backends.iter().map(|s| INTERNER.intern_str(s)).collect();
678 config.rust_codegen_units = rust.codegen_units.map(threads_from_config);
679 config.rust_codegen_units_std = rust.codegen_units_std.map(threads_from_config);
682 if let Some(ref t) = toml.target {
683 for (triple, cfg) in t {
684 let mut target = Target::from_triple(triple);
686 if let Some(ref s) = cfg.llvm_config {
687 target.llvm_config = Some(config.src.join(s));
689 if let Some(ref s) = cfg.llvm_filecheck {
690 target.llvm_filecheck = Some(config.src.join(s));
692 if let Some(ref s) = cfg.android_ndk {
693 target.ndk = Some(config.src.join(s));
695 if let Some(s) = cfg.no_std {
698 target.cc = cfg.cc.clone().map(PathBuf::from);
699 target.cxx = cfg.cxx.clone().map(PathBuf::from);
700 target.ar = cfg.ar.clone().map(PathBuf::from);
701 target.ranlib = cfg.ranlib.clone().map(PathBuf::from);
702 target.linker = cfg.linker.clone().map(PathBuf::from);
703 target.crt_static = cfg.crt_static;
704 target.musl_root = cfg.musl_root.clone().map(PathBuf::from);
705 target.musl_libdir = cfg.musl_libdir.clone().map(PathBuf::from);
706 target.wasi_root = cfg.wasi_root.clone().map(PathBuf::from);
707 target.qemu_rootfs = cfg.qemu_rootfs.clone().map(PathBuf::from);
709 config.target_config.insert(TargetSelection::from_user(triple), target);
713 if let Some(ref t) = toml.dist {
714 config.dist_sign_folder = t.sign_folder.clone().map(PathBuf::from);
715 config.dist_gpg_password_file = t.gpg_password_file.clone().map(PathBuf::from);
716 config.dist_upload_addr = t.upload_addr.clone();
717 set(&mut config.rust_dist_src, t.src_tarball);
718 set(&mut config.missing_tools, t.missing_tools);
721 // Now that we've reached the end of our configuration, infer the
722 // default values for all options that we haven't otherwise stored yet.
724 set(&mut config.initial_rustc, build.rustc.map(PathBuf::from));
725 set(&mut config.initial_cargo, build.cargo.map(PathBuf::from));
727 config.llvm_skip_rebuild = llvm_skip_rebuild.unwrap_or(false);
730 config.llvm_assertions = llvm_assertions.unwrap_or(default);
733 config.rust_optimize = optimize.unwrap_or(default);
735 let default = debug == Some(true);
736 config.rust_debug_assertions = debug_assertions.unwrap_or(default);
737 config.rust_debug_assertions_std =
738 debug_assertions_std.unwrap_or(config.rust_debug_assertions);
740 let with_defaults = |debuginfo_level_specific: Option<u32>| {
741 debuginfo_level_specific.or(debuginfo_level).unwrap_or(if debug == Some(true) {
747 config.rust_debuginfo_level_rustc = with_defaults(debuginfo_level_rustc);
748 config.rust_debuginfo_level_std = with_defaults(debuginfo_level_std);
749 config.rust_debuginfo_level_tools = with_defaults(debuginfo_level_tools);
750 config.rust_debuginfo_level_tests = debuginfo_level_tests.unwrap_or(0);
752 let default = config.channel == "dev";
753 config.ignore_git = ignore_git.unwrap_or(default);
758 /// Try to find the relative path of `bindir`, otherwise return it in full.
759 pub fn bindir_relative(&self) -> &Path {
760 let bindir = &self.bindir;
761 if bindir.is_absolute() {
762 // Try to make it relative to the prefix.
763 if let Some(prefix) = &self.prefix {
764 if let Ok(stripped) = bindir.strip_prefix(prefix) {
772 /// Try to find the relative path of `libdir`.
773 pub fn libdir_relative(&self) -> Option<&Path> {
774 let libdir = self.libdir.as_ref()?;
775 if libdir.is_relative() {
778 // Try to make it relative to the prefix.
779 libdir.strip_prefix(self.prefix.as_ref()?).ok()
783 pub fn verbose(&self) -> bool {
787 pub fn very_verbose(&self) -> bool {
791 pub fn llvm_enabled(&self) -> bool {
792 self.rust_codegen_backends.contains(&INTERNER.intern_str("llvm"))
796 fn set<T>(field: &mut T, val: Option<T>) {
797 if let Some(v) = val {
802 fn threads_from_config(v: u32) -> u32 {
804 0 => num_cpus::get() as u32,