1 //! Contains infrastructure for configuring the compiler, including parsing
2 //! command line options.
6 use session::{early_error, early_warn, Session};
7 use session::search_paths::SearchPath;
9 use rustc_target::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, RelroLevel};
10 use rustc_target::spec::{Target, TargetTriple};
14 use syntax::ast::{self, IntTy, UintTy, MetaItemKind};
15 use syntax::source_map::{FileName, FilePathMapping};
16 use syntax::edition::{Edition, EDITION_NAME_LIST, DEFAULT_EDITION};
17 use syntax::parse::token;
19 use syntax::symbol::Symbol;
20 use syntax::feature_gate::UnstableFeatures;
22 use errors::{ColorConfig, FatalError, Handler};
25 use std::collections::{BTreeMap, BTreeSet};
26 use std::collections::btree_map::Iter as BTreeMapIter;
27 use std::collections::btree_map::Keys as BTreeMapKeysIter;
28 use std::collections::btree_map::Values as BTreeMapValuesIter;
30 use rustc_data_structures::fx::FxHashSet;
32 use std::hash::Hasher;
33 use std::collections::hash_map::DefaultHasher;
34 use std::iter::FromIterator;
35 use std::path::{Path, PathBuf};
43 #[derive(Clone, Hash, Debug)]
51 #[derive(Clone, Copy, Debug, PartialEq, Hash)]
61 impl_stable_hash_via_hash!(OptLevel);
63 /// This is what the `LtoCli` values get mapped to after resolving defaults and
64 /// and taking other command line options into account.
65 #[derive(Clone, Copy, PartialEq, Hash, Debug)]
67 /// Don't do any LTO whatsoever
70 /// Do a full crate graph LTO with ThinLTO
73 /// Do a local graph LTO with ThinLTO (only relevant for multiple codegen
77 /// Do a full crate graph LTO with "fat" LTO
81 /// The different settings that the `-C lto` flag can have.
82 #[derive(Clone, Copy, PartialEq, Hash, Debug)]
94 /// No `-C lto` flag passed
98 #[derive(Clone, PartialEq, Hash)]
99 pub enum CrossLangLto {
100 LinkerPlugin(PathBuf),
106 pub fn enabled(&self) -> bool {
108 CrossLangLto::LinkerPlugin(_) |
109 CrossLangLto::LinkerPluginAuto => true,
110 CrossLangLto::Disabled => false,
115 #[derive(Clone, Copy, PartialEq, Hash)]
122 #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, PartialOrd, Ord, RustcEncodable, RustcDecodable)]
123 pub enum OutputType {
134 impl_stable_hash_via_hash!(OutputType);
137 fn is_compatible_with_codegen_units_and_single_output_file(&self) -> bool {
139 OutputType::Exe | OutputType::DepInfo => true,
141 | OutputType::Assembly
142 | OutputType::LlvmAssembly
145 | OutputType::Metadata => false,
149 fn shorthand(&self) -> &'static str {
151 OutputType::Bitcode => "llvm-bc",
152 OutputType::Assembly => "asm",
153 OutputType::LlvmAssembly => "llvm-ir",
154 OutputType::Mir => "mir",
155 OutputType::Object => "obj",
156 OutputType::Metadata => "metadata",
157 OutputType::Exe => "link",
158 OutputType::DepInfo => "dep-info",
162 fn from_shorthand(shorthand: &str) -> Option<Self> {
163 Some(match shorthand {
164 "asm" => OutputType::Assembly,
165 "llvm-ir" => OutputType::LlvmAssembly,
166 "mir" => OutputType::Mir,
167 "llvm-bc" => OutputType::Bitcode,
168 "obj" => OutputType::Object,
169 "metadata" => OutputType::Metadata,
170 "link" => OutputType::Exe,
171 "dep-info" => OutputType::DepInfo,
176 fn shorthands_display() -> String {
178 "`{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`",
179 OutputType::Bitcode.shorthand(),
180 OutputType::Assembly.shorthand(),
181 OutputType::LlvmAssembly.shorthand(),
182 OutputType::Mir.shorthand(),
183 OutputType::Object.shorthand(),
184 OutputType::Metadata.shorthand(),
185 OutputType::Exe.shorthand(),
186 OutputType::DepInfo.shorthand(),
190 pub fn extension(&self) -> &'static str {
192 OutputType::Bitcode => "bc",
193 OutputType::Assembly => "s",
194 OutputType::LlvmAssembly => "ll",
195 OutputType::Mir => "mir",
196 OutputType::Object => "o",
197 OutputType::Metadata => "rmeta",
198 OutputType::DepInfo => "d",
199 OutputType::Exe => "",
204 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
205 pub enum ErrorOutputType {
206 HumanReadable(ColorConfig),
211 impl Default for ErrorOutputType {
212 fn default() -> ErrorOutputType {
213 ErrorOutputType::HumanReadable(ColorConfig::Auto)
217 // Use tree-based collections to cheaply get a deterministic Hash implementation.
218 // DO NOT switch BTreeMap out for an unsorted container type! That would break
219 // dependency tracking for command-line arguments.
220 #[derive(Clone, Hash)]
221 pub struct OutputTypes(BTreeMap<OutputType, Option<PathBuf>>);
223 impl_stable_hash_via_hash!(OutputTypes);
226 pub fn new(entries: &[(OutputType, Option<PathBuf>)]) -> OutputTypes {
227 OutputTypes(BTreeMap::from_iter(
228 entries.iter().map(|&(k, ref v)| (k, v.clone())),
232 pub fn get(&self, key: &OutputType) -> Option<&Option<PathBuf>> {
236 pub fn contains_key(&self, key: &OutputType) -> bool {
237 self.0.contains_key(key)
240 pub fn keys<'a>(&'a self) -> BTreeMapKeysIter<'a, OutputType, Option<PathBuf>> {
244 pub fn values<'a>(&'a self) -> BTreeMapValuesIter<'a, OutputType, Option<PathBuf>> {
248 pub fn len(&self) -> usize {
252 // True if any of the output types require codegen or linking.
253 pub fn should_codegen(&self) -> bool {
254 self.0.keys().any(|k| match *k {
256 | OutputType::Assembly
257 | OutputType::LlvmAssembly
260 | OutputType::Exe => true,
261 OutputType::Metadata | OutputType::DepInfo => false,
266 // Use tree-based collections to cheaply get a deterministic Hash implementation.
267 // DO NOT switch BTreeMap or BTreeSet out for an unsorted container type! That
268 // would break dependency tracking for command-line arguments.
269 #[derive(Clone, Hash)]
270 pub struct Externs(BTreeMap<String, BTreeSet<Option<String>>>);
273 pub fn new(data: BTreeMap<String, BTreeSet<Option<String>>>) -> Externs {
277 pub fn get(&self, key: &str) -> Option<&BTreeSet<Option<String>>> {
281 pub fn iter<'a>(&'a self) -> BTreeMapIter<'a, String, BTreeSet<Option<String>>> {
286 macro_rules! hash_option {
287 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [UNTRACKED]) => ({});
288 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [TRACKED]) => ({
289 if $sub_hashes.insert(stringify!($opt_name),
290 $opt_expr as &dyn dep_tracking::DepTrackingHash).is_some() {
291 bug!("Duplicate key in CLI DepTrackingHash: {}", stringify!($opt_name))
297 [UNTRACKED_WITH_WARNING $warn_val:expr, $warn_text:expr, $error_format:expr]) => ({
298 if *$opt_expr == $warn_val {
299 early_warn($error_format, $warn_text)
304 macro_rules! top_level_options {
305 (pub struct Options { $(
306 $opt:ident : $t:ty [$dep_tracking_marker:ident $($warn_val:expr, $warn_text:expr)*],
314 pub fn dep_tracking_hash(&self) -> u64 {
315 let mut sub_hashes = BTreeMap::new();
320 [$dep_tracking_marker $($warn_val,
322 self.error_format)*]);
324 let mut hasher = DefaultHasher::new();
325 dep_tracking::stable_hash(sub_hashes,
334 // The top-level command-line options struct
336 // For each option, one has to specify how it behaves with regard to the
337 // dependency tracking system of incremental compilation. This is done via the
338 // square-bracketed directive after the field type. The options are:
341 // A change in the given field will cause the compiler to completely clear the
342 // incremental compilation cache before proceeding.
345 // Incremental compilation is not influenced by this option.
347 // [UNTRACKED_WITH_WARNING(val, warning)]
348 // The option is incompatible with incremental compilation in some way. If it
349 // has the value `val`, the string `warning` is emitted as a warning.
351 // If you add a new option to this struct or one of the sub-structs like
352 // CodegenOptions, think about how it influences incremental compilation. If in
353 // doubt, specify [TRACKED], which is always "correct" but might lead to
354 // unnecessary re-compilation.
357 // The crate config requested for the session, which may be combined
358 // with additional crate configurations during the compile process
359 crate_types: Vec<CrateType> [TRACKED],
360 optimize: OptLevel [TRACKED],
361 // Include the debug_assertions flag into dependency tracking, since it
362 // can influence whether overflow checks are done or not.
363 debug_assertions: bool [TRACKED],
364 debuginfo: DebugInfo [TRACKED],
365 lint_opts: Vec<(String, lint::Level)> [TRACKED],
366 lint_cap: Option<lint::Level> [TRACKED],
367 describe_lints: bool [UNTRACKED],
368 output_types: OutputTypes [TRACKED],
369 search_paths: Vec<SearchPath> [UNTRACKED],
370 libs: Vec<(String, Option<String>, Option<cstore::NativeLibraryKind>)> [TRACKED],
371 maybe_sysroot: Option<PathBuf> [TRACKED],
373 target_triple: TargetTriple [TRACKED],
375 test: bool [TRACKED],
376 error_format: ErrorOutputType [UNTRACKED],
378 // if Some, enable incremental compilation, using the given
379 // directory to store intermediate results
380 incremental: Option<PathBuf> [UNTRACKED],
382 debugging_opts: DebuggingOptions [TRACKED],
383 prints: Vec<PrintRequest> [UNTRACKED],
384 // Determines which borrow checker(s) to run. This is the parsed, sanitized
385 // version of `debugging_opts.borrowck`, which is just a plain string.
386 borrowck_mode: BorrowckMode [UNTRACKED],
387 cg: CodegenOptions [TRACKED],
388 externs: Externs [UNTRACKED],
389 crate_name: Option<String> [TRACKED],
390 // An optional name to use as the crate for std during std injection,
391 // written `extern crate name as std`. Defaults to `std`. Used by
392 // out-of-tree drivers.
393 alt_std_name: Option<String> [TRACKED],
394 // Indicates how the compiler should treat unstable features
395 unstable_features: UnstableFeatures [TRACKED],
397 // Indicates whether this run of the compiler is actually rustdoc. This
398 // is currently just a hack and will be removed eventually, so please
399 // try to not rely on this too much.
400 actually_rustdoc: bool [TRACKED],
402 // Specifications of codegen units / ThinLTO which are forced as a
403 // result of parsing command line options. These are not necessarily
404 // what rustc was invoked with, but massaged a bit to agree with
405 // commands like `--emit llvm-ir` which they're often incompatible with
406 // if we otherwise use the defaults of rustc.
407 cli_forced_codegen_units: Option<usize> [UNTRACKED],
408 cli_forced_thinlto_off: bool [UNTRACKED],
410 // Remap source path prefixes in all output (messages, object files, debug, etc)
411 remap_path_prefix: Vec<(PathBuf, PathBuf)> [UNTRACKED],
413 edition: Edition [TRACKED],
415 // The list of crates to consider public for
416 // checking leaked private dependency types in public interfaces
417 extern_public: Option<Vec<String>> [TRACKED],
421 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
422 pub enum PrintRequest {
437 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
438 pub enum BorrowckMode {
446 /// Should we run the MIR-based borrow check, but also fall back
447 /// on the AST borrow check if the MIR-based one errors.
448 pub fn migrate(self) -> bool {
450 BorrowckMode::Ast => false,
451 BorrowckMode::Compare => false,
452 BorrowckMode::Mir => false,
453 BorrowckMode::Migrate => true,
457 /// Should we emit the AST-based borrow checker errors?
458 pub fn use_ast(self) -> bool {
460 BorrowckMode::Ast => true,
461 BorrowckMode::Compare => true,
462 BorrowckMode::Mir => false,
463 BorrowckMode::Migrate => false,
466 /// Should we emit the MIR-based borrow checker errors?
467 pub fn use_mir(self) -> bool {
469 BorrowckMode::Ast => false,
470 BorrowckMode::Compare => true,
471 BorrowckMode::Mir => true,
472 BorrowckMode::Migrate => true,
478 /// Load source from file
481 /// String that is shown in place of a filename
483 /// Anonymous source string
489 pub fn filestem(&self) -> &str {
491 Input::File(ref ifile) => ifile.file_stem().unwrap().to_str().unwrap(),
492 Input::Str { .. } => "rust_out",
496 pub fn get_input(&mut self) -> Option<&mut String> {
498 Input::File(_) => None,
499 Input::Str { ref mut input, .. } => Some(input),
504 #[derive(Clone, Hash)]
505 pub struct OutputFilenames {
506 pub out_directory: PathBuf,
507 pub out_filestem: String,
508 pub single_output_file: Option<PathBuf>,
510 pub outputs: OutputTypes,
513 impl_stable_hash_via_hash!(OutputFilenames);
515 pub const RUST_CGU_EXT: &str = "rcgu";
517 impl OutputFilenames {
518 pub fn path(&self, flavor: OutputType) -> PathBuf {
521 .and_then(|p| p.to_owned())
522 .or_else(|| self.single_output_file.clone())
523 .unwrap_or_else(|| self.temp_path(flavor, None))
526 /// Get the path where a compilation artifact of the given type for the
527 /// given codegen unit should be placed on disk. If codegen_unit_name is
528 /// None, a path distinct from those of any codegen unit will be generated.
529 pub fn temp_path(&self, flavor: OutputType, codegen_unit_name: Option<&str>) -> PathBuf {
530 let extension = flavor.extension();
531 self.temp_path_ext(extension, codegen_unit_name)
534 /// Like temp_path, but also supports things where there is no corresponding
535 /// OutputType, like no-opt-bitcode or lto-bitcode.
536 pub fn temp_path_ext(&self, ext: &str, codegen_unit_name: Option<&str>) -> PathBuf {
537 let base = self.out_directory.join(&self.filestem());
539 let mut extension = String::new();
541 if let Some(codegen_unit_name) = codegen_unit_name {
542 extension.push_str(codegen_unit_name);
546 if !extension.is_empty() {
547 extension.push_str(".");
548 extension.push_str(RUST_CGU_EXT);
549 extension.push_str(".");
552 extension.push_str(ext);
555 let path = base.with_extension(&extension[..]);
559 pub fn with_extension(&self, extension: &str) -> PathBuf {
561 .join(&self.filestem())
562 .with_extension(extension)
565 pub fn filestem(&self) -> String {
566 format!("{}{}", self.out_filestem, self.extra)
570 pub fn host_triple() -> &'static str {
571 // Get the host triple out of the build environment. This ensures that our
572 // idea of the host triple is the same as for the set of libraries we've
573 // actually built. We can't just take LLVM's host triple because they
574 // normalize all ix86 architectures to i386.
576 // Instead of grabbing the host triple (for the current host), we grab (at
577 // compile time) the target triple that this rustc is built with and
578 // calling that (at runtime) the host triple.
579 (option_env!("CFG_COMPILER_HOST_TRIPLE")).expect("CFG_COMPILER_HOST_TRIPLE")
582 impl Default for Options {
583 fn default() -> Options {
585 crate_types: Vec::new(),
586 optimize: OptLevel::No,
587 debuginfo: DebugInfo::None,
588 lint_opts: Vec::new(),
590 describe_lints: false,
591 output_types: OutputTypes(BTreeMap::new()),
592 search_paths: vec![],
594 target_triple: TargetTriple::from_triple(host_triple()),
597 debugging_opts: basic_debugging_options(),
599 borrowck_mode: BorrowckMode::Ast,
600 cg: basic_codegen_options(),
601 error_format: ErrorOutputType::default(),
602 externs: Externs(BTreeMap::new()),
606 unstable_features: UnstableFeatures::Disallow,
607 debug_assertions: true,
608 actually_rustdoc: false,
609 cli_forced_codegen_units: None,
610 cli_forced_thinlto_off: false,
611 remap_path_prefix: Vec::new(),
612 edition: DEFAULT_EDITION,
619 /// True if there is a reason to build the dep graph.
620 pub fn build_dep_graph(&self) -> bool {
621 self.incremental.is_some() || self.debugging_opts.dump_dep_graph
622 || self.debugging_opts.query_dep_graph
626 pub fn enable_dep_node_debug_strs(&self) -> bool {
627 cfg!(debug_assertions)
628 && (self.debugging_opts.query_dep_graph || self.debugging_opts.incremental_info)
631 pub fn file_path_mapping(&self) -> FilePathMapping {
632 FilePathMapping::new(self.remap_path_prefix.clone())
635 /// True if there will be an output file generated
636 pub fn will_create_output_file(&self) -> bool {
637 !self.debugging_opts.parse_only && // The file is just being parsed
638 !self.debugging_opts.ls // The file is just being queried
642 pub fn share_generics(&self) -> bool {
643 match self.debugging_opts.share_generics {
644 Some(setting) => setting,
646 match self.optimize {
650 OptLevel::SizeMin => true,
652 OptLevel::Aggressive => false,
659 // The type of entry function, so users can have their own entry functions
660 #[derive(Copy, Clone, PartialEq, Hash, Debug)]
661 pub enum EntryFnType {
666 impl_stable_hash_via_hash!(EntryFnType);
668 #[derive(Copy, PartialEq, PartialOrd, Clone, Ord, Eq, Hash, Debug)]
678 #[derive(Clone, Hash)]
685 pub fn is_empty(&self) -> bool {
687 Passes::Some(ref v) => v.is_empty(),
688 Passes::All => false,
693 /// Declare a macro that will define all CodegenOptions/DebuggingOptions fields and parsers all
694 /// at once. The goal of this macro is to define an interface that can be
695 /// programmatically used by the option parser in order to initialize the struct
696 /// without hardcoding field names all over the place.
698 /// The goal is to invoke this macro once with the correct fields, and then this
699 /// macro generates all necessary code. The main gotcha of this macro is the
700 /// cgsetters module which is a bunch of generated code to parse an option into
701 /// its respective field in the struct. There are a few hand-written parsers for
702 /// parsing specific types of values in this module.
703 macro_rules! options {
704 ($struct_name:ident, $setter_name:ident, $defaultfn:ident,
705 $buildfn:ident, $prefix:expr, $outputname:expr,
706 $stat:ident, $mod_desc:ident, $mod_set:ident,
707 $($opt:ident : $t:ty = (
710 [$dep_tracking_marker:ident $(($dep_warn_val:expr, $dep_warn_text:expr))*],
715 pub struct $struct_name { $(pub $opt: $t),* }
717 pub fn $defaultfn() -> $struct_name {
718 $struct_name { $($opt: $init),* }
721 pub fn $buildfn(matches: &getopts::Matches, error_format: ErrorOutputType) -> $struct_name
723 let mut op = $defaultfn();
724 for option in matches.opt_strs($prefix) {
725 let mut iter = option.splitn(2, '=');
726 let key = iter.next().unwrap();
727 let value = iter.next();
728 let option_to_lookup = key.replace("-", "_");
729 let mut found = false;
730 for &(candidate, setter, opt_type_desc, _) in $stat {
731 if option_to_lookup != candidate { continue }
732 if !setter(&mut op, value) {
733 match (value, opt_type_desc) {
734 (Some(..), None) => {
735 early_error(error_format, &format!("{} option `{}` takes no \
736 value", $outputname, key))
738 (None, Some(type_desc)) => {
739 early_error(error_format, &format!("{0} option `{1}` requires \
740 {2} ({3} {1}=<value>)",
744 (Some(value), Some(type_desc)) => {
745 early_error(error_format, &format!("incorrect value `{}` for {} \
746 option `{}` - {} was expected",
750 (None, None) => bug!()
757 early_error(error_format, &format!("unknown {} option: `{}`",
764 impl<'a> dep_tracking::DepTrackingHash for $struct_name {
765 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
766 let mut sub_hashes = BTreeMap::new();
771 [$dep_tracking_marker $($dep_warn_val,
775 dep_tracking::stable_hash(sub_hashes, hasher, error_format);
779 pub type $setter_name = fn(&mut $struct_name, v: Option<&str>) -> bool;
780 pub const $stat: &[(&str, $setter_name, Option<&str>, &str)] =
781 &[ $( (stringify!($opt), $mod_set::$opt, $mod_desc::$parse, $desc) ),* ];
783 #[allow(non_upper_case_globals, dead_code)]
785 pub const parse_bool: Option<&str> = None;
786 pub const parse_opt_bool: Option<&str> =
787 Some("one of: `y`, `yes`, `on`, `n`, `no`, or `off`");
788 pub const parse_string: Option<&str> = Some("a string");
789 pub const parse_string_push: Option<&str> = Some("a string");
790 pub const parse_pathbuf_push: Option<&str> = Some("a path");
791 pub const parse_opt_string: Option<&str> = Some("a string");
792 pub const parse_opt_pathbuf: Option<&str> = Some("a path");
793 pub const parse_list: Option<&str> = Some("a space-separated list of strings");
794 pub const parse_opt_list: Option<&str> = Some("a space-separated list of strings");
795 pub const parse_uint: Option<&str> = Some("a number");
796 pub const parse_passes: Option<&str> =
797 Some("a space-separated list of passes, or `all`");
798 pub const parse_opt_uint: Option<&str> =
800 pub const parse_panic_strategy: Option<&str> =
801 Some("either `unwind` or `abort`");
802 pub const parse_relro_level: Option<&str> =
803 Some("one of: `full`, `partial`, or `off`");
804 pub const parse_sanitizer: Option<&str> =
805 Some("one of: `address`, `leak`, `memory` or `thread`");
806 pub const parse_linker_flavor: Option<&str> =
807 Some(::rustc_target::spec::LinkerFlavor::one_of());
808 pub const parse_optimization_fuel: Option<&str> =
809 Some("crate=integer");
810 pub const parse_unpretty: Option<&str> =
811 Some("`string` or `string=string`");
812 pub const parse_lto: Option<&str> =
813 Some("either a boolean (`yes`, `no`, `on`, `off`, etc), `thin`, \
815 pub const parse_cross_lang_lto: Option<&str> =
816 Some("either a boolean (`yes`, `no`, `on`, `off`, etc), \
817 or the path to the linker plugin");
818 pub const parse_merge_functions: Option<&str> =
819 Some("one of: `disabled`, `trampolines`, or `aliases`");
824 use super::{$struct_name, Passes, Sanitizer, LtoCli, CrossLangLto};
825 use rustc_target::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, RelroLevel};
826 use std::path::PathBuf;
827 use std::str::FromStr;
830 pub fn $opt(cg: &mut $struct_name, v: Option<&str>) -> bool {
831 $parse(&mut cg.$opt, v)
835 fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool {
838 None => { *slot = true; true }
842 fn parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool {
846 "n" | "no" | "off" => {
849 "y" | "yes" | "on" => {
852 _ => { return false; }
857 None => { *slot = Some(true); true }
861 fn parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool {
863 Some(s) => { *slot = Some(s.to_string()); true },
868 fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, v: Option<&str>) -> bool {
870 Some(s) => { *slot = Some(PathBuf::from(s)); true },
875 fn parse_string(slot: &mut String, v: Option<&str>) -> bool {
877 Some(s) => { *slot = s.to_string(); true },
882 fn parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool {
884 Some(s) => { slot.push(s.to_string()); true },
889 fn parse_pathbuf_push(slot: &mut Vec<PathBuf>, v: Option<&str>) -> bool {
891 Some(s) => { slot.push(PathBuf::from(s)); true },
896 fn parse_list(slot: &mut Vec<String>, v: Option<&str>)
900 slot.extend(s.split_whitespace().map(|s| s.to_string()));
907 fn parse_opt_list(slot: &mut Option<Vec<String>>, v: Option<&str>)
911 let v = s.split_whitespace().map(|s| s.to_string()).collect();
919 fn parse_uint(slot: &mut usize, v: Option<&str>) -> bool {
920 match v.and_then(|s| s.parse().ok()) {
921 Some(i) => { *slot = i; true },
926 fn parse_opt_uint(slot: &mut Option<usize>, v: Option<&str>) -> bool {
928 Some(s) => { *slot = s.parse().ok(); slot.is_some() }
929 None => { *slot = None; false }
933 fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
940 let mut passes = vec![];
941 if parse_list(&mut passes, v) {
942 *slot = Passes::Some(passes);
951 fn parse_panic_strategy(slot: &mut Option<PanicStrategy>, v: Option<&str>) -> bool {
953 Some("unwind") => *slot = Some(PanicStrategy::Unwind),
954 Some("abort") => *slot = Some(PanicStrategy::Abort),
960 fn parse_relro_level(slot: &mut Option<RelroLevel>, v: Option<&str>) -> bool {
963 match s.parse::<RelroLevel>() {
964 Ok(level) => *slot = Some(level),
973 fn parse_sanitizer(slote: &mut Option<Sanitizer>, v: Option<&str>) -> bool {
975 Some("address") => *slote = Some(Sanitizer::Address),
976 Some("leak") => *slote = Some(Sanitizer::Leak),
977 Some("memory") => *slote = Some(Sanitizer::Memory),
978 Some("thread") => *slote = Some(Sanitizer::Thread),
984 fn parse_linker_flavor(slote: &mut Option<LinkerFlavor>, v: Option<&str>) -> bool {
985 match v.and_then(LinkerFlavor::from_str) {
986 Some(lf) => *slote = Some(lf),
992 fn parse_optimization_fuel(slot: &mut Option<(String, u64)>, v: Option<&str>) -> bool {
996 let parts = s.split('=').collect::<Vec<_>>();
997 if parts.len() != 2 { return false; }
998 let crate_name = parts[0].to_string();
999 let fuel = parts[1].parse::<u64>();
1000 if fuel.is_err() { return false; }
1001 *slot = Some((crate_name, fuel.unwrap()));
1007 fn parse_unpretty(slot: &mut Option<String>, v: Option<&str>) -> bool {
1010 Some(s) if s.split('=').count() <= 2 => {
1011 *slot = Some(s.to_string());
1018 fn parse_lto(slot: &mut LtoCli, v: Option<&str>) -> bool {
1020 let mut bool_arg = None;
1021 if parse_opt_bool(&mut bool_arg, v) {
1022 *slot = if bool_arg.unwrap() {
1032 None => LtoCli::NoParam,
1033 Some("thin") => LtoCli::Thin,
1034 Some("fat") => LtoCli::Fat,
1035 Some(_) => return false,
1040 fn parse_cross_lang_lto(slot: &mut CrossLangLto, v: Option<&str>) -> bool {
1042 let mut bool_arg = None;
1043 if parse_opt_bool(&mut bool_arg, v) {
1044 *slot = if bool_arg.unwrap() {
1045 CrossLangLto::LinkerPluginAuto
1047 CrossLangLto::Disabled
1054 None => CrossLangLto::LinkerPluginAuto,
1055 Some(path) => CrossLangLto::LinkerPlugin(PathBuf::from(path)),
1060 fn parse_merge_functions(slot: &mut Option<MergeFunctions>, v: Option<&str>) -> bool {
1061 match v.and_then(|s| MergeFunctions::from_str(s).ok()) {
1062 Some(mergefunc) => *slot = Some(mergefunc),
1070 options! {CodegenOptions, CodegenSetter, basic_codegen_options,
1071 build_codegen_options, "C", "codegen",
1072 CG_OPTIONS, cg_type_desc, cgsetters,
1073 ar: Option<String> = (None, parse_opt_string, [UNTRACKED],
1074 "this option is deprecated and does nothing"),
1075 linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1076 "system linker to link outputs with"),
1077 link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1078 "a single extra argument to append to the linker invocation (can be used several times)"),
1079 link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1080 "extra arguments to append to the linker invocation (space separated)"),
1081 link_dead_code: bool = (false, parse_bool, [UNTRACKED],
1082 "don't let linker strip dead code (turning it on can be used for code coverage)"),
1083 lto: LtoCli = (LtoCli::Unspecified, parse_lto, [TRACKED],
1084 "perform LLVM link-time optimizations"),
1085 target_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1086 "select target processor (rustc --print target-cpus for details)"),
1087 target_feature: String = (String::new(), parse_string, [TRACKED],
1088 "target specific attributes (rustc --print target-features for details)"),
1089 passes: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1090 "a list of extra LLVM passes to run (space separated)"),
1091 llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1092 "a list of arguments to pass to llvm (space separated)"),
1093 save_temps: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1094 "`-C save-temps` might not produce all requested temporary products \
1095 when incremental compilation is enabled.")],
1096 "save all temporary output files during compilation"),
1097 rpath: bool = (false, parse_bool, [UNTRACKED],
1098 "set rpath values in libs/exes"),
1099 overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1100 "use overflow checks for integer arithmetic"),
1101 no_prepopulate_passes: bool = (false, parse_bool, [TRACKED],
1102 "don't pre-populate the pass manager with a list of passes"),
1103 no_vectorize_loops: bool = (false, parse_bool, [TRACKED],
1104 "don't run the loop vectorization optimization passes"),
1105 no_vectorize_slp: bool = (false, parse_bool, [TRACKED],
1106 "don't run LLVM's SLP vectorization pass"),
1107 soft_float: bool = (false, parse_bool, [TRACKED],
1108 "use soft float ABI (*eabihf targets only)"),
1109 prefer_dynamic: bool = (false, parse_bool, [TRACKED],
1110 "prefer dynamic linking to static linking"),
1111 no_integrated_as: bool = (false, parse_bool, [TRACKED],
1112 "use an external assembler rather than LLVM's integrated one"),
1113 no_redzone: Option<bool> = (None, parse_opt_bool, [TRACKED],
1114 "disable the use of the redzone"),
1115 relocation_model: Option<String> = (None, parse_opt_string, [TRACKED],
1116 "choose the relocation model to use (rustc --print relocation-models for details)"),
1117 code_model: Option<String> = (None, parse_opt_string, [TRACKED],
1118 "choose the code model to use (rustc --print code-models for details)"),
1119 metadata: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1120 "metadata to mangle symbol names with"),
1121 extra_filename: String = (String::new(), parse_string, [UNTRACKED],
1122 "extra data to put in each output filename"),
1123 codegen_units: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1124 "divide crate into N units to optimize in parallel"),
1125 remark: Passes = (Passes::Some(Vec::new()), parse_passes, [UNTRACKED],
1126 "print remarks for these optimization passes (space separated, or \"all\")"),
1127 no_stack_check: bool = (false, parse_bool, [UNTRACKED],
1128 "the --no-stack-check flag is deprecated and does nothing"),
1129 debuginfo: Option<usize> = (None, parse_opt_uint, [TRACKED],
1130 "debug info emission level, 0 = no debug info, 1 = line tables only, \
1131 2 = full debug info with variable and type information"),
1132 opt_level: Option<String> = (None, parse_opt_string, [TRACKED],
1133 "optimize with possible levels 0-3, s, or z"),
1134 force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
1135 "force use of the frame pointers"),
1136 debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
1137 "explicitly enable the cfg(debug_assertions) directive"),
1138 inline_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
1139 "set the threshold for inlining a function (default: 225)"),
1140 panic: Option<PanicStrategy> = (None, parse_panic_strategy,
1141 [TRACKED], "panic strategy to compile crate with"),
1142 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1143 "enable incremental compilation"),
1144 default_linker_libraries: Option<bool> = (None, parse_opt_bool, [UNTRACKED],
1145 "allow the linker to link its default libraries"),
1146 linker_flavor: Option<LinkerFlavor> = (None, parse_linker_flavor, [UNTRACKED],
1150 options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
1151 build_debugging_options, "Z", "debugging",
1152 DB_OPTIONS, db_type_desc, dbsetters,
1153 codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
1154 "the backend to use"),
1155 verbose: bool = (false, parse_bool, [UNTRACKED],
1156 "in general, enable more debug printouts"),
1157 span_free_formats: bool = (false, parse_bool, [UNTRACKED],
1158 "when debug-printing compiler state, do not include spans"), // o/w tests have closure@path
1159 identify_regions: bool = (false, parse_bool, [UNTRACKED],
1160 "make unnamed regions display as '# (where # is some non-ident unique id)"),
1161 borrowck: Option<String> = (None, parse_opt_string, [UNTRACKED],
1162 "select which borrowck is used (`ast`, `mir`, `migrate`, or `compare`)"),
1163 two_phase_borrows: bool = (false, parse_bool, [UNTRACKED],
1164 "use two-phase reserved/active distinction for `&mut` borrows in MIR borrowck"),
1165 two_phase_beyond_autoref: bool = (false, parse_bool, [UNTRACKED],
1166 "when using two-phase-borrows, allow two phases even for non-autoref `&mut` borrows"),
1167 time_passes: bool = (false, parse_bool, [UNTRACKED],
1168 "measure time of each rustc pass"),
1169 count_llvm_insns: bool = (false, parse_bool,
1170 [UNTRACKED_WITH_WARNING(true,
1171 "The output generated by `-Z count_llvm_insns` might not be reliable \
1172 when used with incremental compilation")],
1173 "count where LLVM instrs originate"),
1174 time_llvm_passes: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1175 "The output of `-Z time-llvm-passes` will only reflect timings of \
1176 re-codegened modules when used with incremental compilation" )],
1177 "measure time of each LLVM pass"),
1178 input_stats: bool = (false, parse_bool, [UNTRACKED],
1179 "gather statistics about the input"),
1180 codegen_stats: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1181 "The output of `-Z codegen-stats` might not be accurate when incremental \
1182 compilation is enabled")],
1183 "gather codegen statistics"),
1184 asm_comments: bool = (false, parse_bool, [TRACKED],
1185 "generate comments into the assembly (may change behavior)"),
1186 verify_llvm_ir: bool = (false, parse_bool, [TRACKED],
1188 borrowck_stats: bool = (false, parse_bool, [UNTRACKED],
1189 "gather borrowck statistics"),
1190 no_landing_pads: bool = (false, parse_bool, [TRACKED],
1191 "omit landing pads for unwinding"),
1192 fewer_names: bool = (false, parse_bool, [TRACKED],
1193 "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR)"),
1194 meta_stats: bool = (false, parse_bool, [UNTRACKED],
1195 "gather metadata statistics"),
1196 print_link_args: bool = (false, parse_bool, [UNTRACKED],
1197 "print the arguments passed to the linker"),
1198 print_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1199 "prints the llvm optimization passes being run"),
1200 ast_json: bool = (false, parse_bool, [UNTRACKED],
1201 "print the AST as JSON and halt"),
1202 threads: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1203 "use a thread pool with N threads"),
1204 ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED],
1205 "print the pre-expansion AST as JSON and halt"),
1206 ls: bool = (false, parse_bool, [UNTRACKED],
1207 "list the symbols defined by a library crate"),
1208 save_analysis: bool = (false, parse_bool, [UNTRACKED],
1209 "write syntax and type analysis (in JSON format) information, in \
1210 addition to normal output"),
1211 flowgraph_print_loans: bool = (false, parse_bool, [UNTRACKED],
1212 "include loan analysis data in -Z unpretty flowgraph output"),
1213 flowgraph_print_moves: bool = (false, parse_bool, [UNTRACKED],
1214 "include move analysis data in -Z unpretty flowgraph output"),
1215 flowgraph_print_assigns: bool = (false, parse_bool, [UNTRACKED],
1216 "include assignment analysis data in -Z unpretty flowgraph output"),
1217 flowgraph_print_all: bool = (false, parse_bool, [UNTRACKED],
1218 "include all dataflow analysis data in -Z unpretty flowgraph output"),
1219 print_region_graph: bool = (false, parse_bool, [UNTRACKED],
1220 "prints region inference graph. \
1221 Use with RUST_REGION_GRAPH=help for more info"),
1222 parse_only: bool = (false, parse_bool, [UNTRACKED],
1223 "parse only; do not compile, assemble, or link"),
1224 no_codegen: bool = (false, parse_bool, [TRACKED],
1225 "run all passes except codegen; no output"),
1226 treat_err_as_bug: bool = (false, parse_bool, [TRACKED],
1227 "treat all errors that occur as bugs"),
1228 report_delayed_bugs: bool = (false, parse_bool, [TRACKED],
1229 "immediately print bugs registered with `delay_span_bug`"),
1230 external_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1231 "show macro backtraces even for non-local macros"),
1232 teach: bool = (false, parse_bool, [TRACKED],
1233 "show extended diagnostic help"),
1234 continue_parse_after_error: bool = (false, parse_bool, [TRACKED],
1235 "attempt to recover from parse errors (experimental)"),
1236 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1237 "enable incremental compilation (experimental)"),
1238 incremental_queries: bool = (true, parse_bool, [UNTRACKED],
1239 "enable incremental compilation support for queries (experimental)"),
1240 incremental_info: bool = (false, parse_bool, [UNTRACKED],
1241 "print high-level information about incremental reuse (or the lack thereof)"),
1242 incremental_dump_hash: bool = (false, parse_bool, [UNTRACKED],
1243 "dump hash information in textual format to stdout"),
1244 incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
1245 "verify incr. comp. hashes of green query instances"),
1246 incremental_ignore_spans: bool = (false, parse_bool, [UNTRACKED],
1247 "ignore spans during ICH computation -- used for testing"),
1248 instrument_mcount: bool = (false, parse_bool, [TRACKED],
1249 "insert function instrument code for mcount-based tracing"),
1250 dump_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1251 "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv)"),
1252 query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1253 "enable queries of the dependency graph for regression testing"),
1254 profile_queries: bool = (false, parse_bool, [UNTRACKED],
1255 "trace and profile the queries of the incremental compilation framework"),
1256 profile_queries_and_keys: bool = (false, parse_bool, [UNTRACKED],
1257 "trace and profile the queries and keys of the incremental compilation framework"),
1258 no_analysis: bool = (false, parse_bool, [UNTRACKED],
1259 "parse and expand the source, but run no analysis"),
1260 extra_plugins: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1261 "load extra plugins"),
1262 unstable_options: bool = (false, parse_bool, [UNTRACKED],
1263 "adds unstable command line options to rustc interface"),
1264 force_overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1265 "force overflow checks on or off"),
1266 trace_macros: bool = (false, parse_bool, [UNTRACKED],
1267 "for every macro invocation, print its name and arguments"),
1268 debug_macros: bool = (false, parse_bool, [TRACKED],
1269 "emit line numbers debug info inside macros"),
1270 keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED],
1271 "don't clear the hygiene data after analysis"),
1272 keep_ast: bool = (false, parse_bool, [UNTRACKED],
1273 "keep the AST after lowering it to HIR"),
1274 show_span: Option<String> = (None, parse_opt_string, [TRACKED],
1275 "show spans for compiler debugging (expr|pat|ty)"),
1276 print_type_sizes: bool = (false, parse_bool, [UNTRACKED],
1277 "print layout information for each type encountered"),
1278 print_mono_items: Option<String> = (None, parse_opt_string, [UNTRACKED],
1279 "print the result of the monomorphization collection pass"),
1280 mir_opt_level: usize = (1, parse_uint, [TRACKED],
1281 "set the MIR optimization level (0-3, default: 1)"),
1282 mutable_noalias: Option<bool> = (None, parse_opt_bool, [TRACKED],
1283 "emit noalias metadata for mutable references (default: yes on LLVM >= 6)"),
1284 dump_mir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1285 "dump MIR state to file.
1286 `val` is used to select which passes and functions to dump. For example:
1287 `all` matches all passes and functions,
1288 `foo` matches all passes for functions whose name contains 'foo',
1289 `foo & ConstProp` only the 'ConstProp' pass for function names containing 'foo',
1290 `foo | bar` all passes for function names containing 'foo' or 'bar'."),
1292 dump_mir_dir: String = (String::from("mir_dump"), parse_string, [UNTRACKED],
1293 "the directory the MIR is dumped into"),
1294 dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED],
1295 "in addition to `.mir` files, create graphviz `.dot` files"),
1296 dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED],
1297 "if set, exclude the pass number when dumping MIR (used in tests)"),
1298 mir_emit_retag: bool = (false, parse_bool, [TRACKED],
1299 "emit Retagging MIR statements, interpreted e.g., by miri; implies -Zmir-opt-level=0"),
1300 perf_stats: bool = (false, parse_bool, [UNTRACKED],
1301 "print some performance-related statistics"),
1302 query_stats: bool = (false, parse_bool, [UNTRACKED],
1303 "print some statistics about the query system"),
1304 hir_stats: bool = (false, parse_bool, [UNTRACKED],
1305 "print some statistics about AST and HIR"),
1306 always_encode_mir: bool = (false, parse_bool, [TRACKED],
1307 "encode MIR of all functions into the crate metadata"),
1308 osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
1309 "pass `-install_name @rpath/...` to the macOS linker"),
1310 sanitizer: Option<Sanitizer> = (None, parse_sanitizer, [TRACKED],
1312 fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
1313 "set the optimization fuel quota for a crate"),
1314 print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
1315 "make Rustc print the total optimization fuel used by a crate"),
1316 force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
1317 "force all crates to be `rustc_private` unstable"),
1318 pre_link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1319 "a single extra argument to prepend the linker invocation (can be used several times)"),
1320 pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1321 "extra arguments to prepend to the linker invocation (space separated)"),
1322 profile: bool = (false, parse_bool, [TRACKED],
1323 "insert profiling code"),
1324 pgo_gen: Option<String> = (None, parse_opt_string, [TRACKED],
1325 "Generate PGO profile data, to a given file, or to the default location if it's empty."),
1326 pgo_use: String = (String::new(), parse_string, [TRACKED],
1327 "Use PGO profile data from the given profile file."),
1328 disable_instrumentation_preinliner: bool = (false, parse_bool, [TRACKED],
1329 "Disable the instrumentation pre-inliner, useful for profiling / PGO."),
1330 relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
1331 "choose which RELRO level to use"),
1332 nll_facts: bool = (false, parse_bool, [UNTRACKED],
1333 "dump facts from NLL analysis into side files"),
1334 nll_dont_emit_read_for_match: bool = (false, parse_bool, [UNTRACKED],
1335 "in match codegen, do not include FakeRead statements (used by mir-borrowck)"),
1336 dont_buffer_diagnostics: bool = (false, parse_bool, [UNTRACKED],
1337 "emit diagnostics rather than buffering (breaks NLL error downgrading, sorting)."),
1338 polonius: bool = (false, parse_bool, [UNTRACKED],
1339 "enable polonius-based borrow-checker"),
1340 codegen_time_graph: bool = (false, parse_bool, [UNTRACKED],
1341 "generate a graphical HTML report of time spent in codegen and LLVM"),
1342 thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
1343 "enable ThinLTO when possible"),
1344 inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
1345 "control whether #[inline] functions are in all cgus"),
1346 tls_model: Option<String> = (None, parse_opt_string, [TRACKED],
1347 "choose the TLS model to use (rustc --print tls-models for details)"),
1348 saturating_float_casts: bool = (false, parse_bool, [TRACKED],
1349 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1350 the max/min integer respectively, and NaN is mapped to 0"),
1351 lower_128bit_ops: Option<bool> = (None, parse_opt_bool, [TRACKED],
1352 "rewrite operators on i128 and u128 into lang item calls (typically provided \
1353 by compiler-builtins) so codegen doesn't need to support them,
1354 overriding the default for the current target"),
1355 human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
1356 "generate human-readable, predictable names for codegen units"),
1357 dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
1358 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
1360 unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
1361 "Present the input source, unstable (and less-pretty) variants;
1362 valid types are any of the types for `--pretty`, as well as:
1363 `expanded`, `expanded,identified`,
1364 `expanded,hygiene` (with internal representations),
1365 `flowgraph=<nodeid>` (graphviz formatted flowgraph for node),
1366 `flowgraph,unlabelled=<nodeid>` (unlabelled graphviz formatted flowgraph for node),
1367 `everybody_loops` (all function bodies replaced with `loop {}`),
1368 `hir` (the HIR), `hir,identified`,
1369 `hir,typed` (HIR with types for each node),
1370 `hir-tree` (dump the raw HIR),
1371 `mir` (the MIR), or `mir-cfg` (graphviz formatted MIR)"),
1372 run_dsymutil: Option<bool> = (None, parse_opt_bool, [TRACKED],
1373 "run `dsymutil` and delete intermediate object files"),
1374 ui_testing: bool = (false, parse_bool, [UNTRACKED],
1375 "format compiler diagnostics in a way that's better suitable for UI testing"),
1376 embed_bitcode: bool = (false, parse_bool, [TRACKED],
1377 "embed LLVM bitcode in object files"),
1378 strip_debuginfo_if_disabled: Option<bool> = (None, parse_opt_bool, [TRACKED],
1379 "tell the linker to strip debuginfo when building without debuginfo enabled."),
1380 share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
1381 "make the current crate share its generic instantiations"),
1382 chalk: bool = (false, parse_bool, [TRACKED],
1383 "enable the experimental Chalk-based trait solving engine"),
1384 cross_lang_lto: CrossLangLto = (CrossLangLto::Disabled, parse_cross_lang_lto, [TRACKED],
1385 "generate build artifacts that are compatible with linker-based LTO."),
1386 no_parallel_llvm: bool = (false, parse_bool, [UNTRACKED],
1387 "don't run LLVM in parallel (while keeping codegen-units and ThinLTO)"),
1388 no_leak_check: bool = (false, parse_bool, [UNTRACKED],
1389 "disables the 'leak check' for subtyping; unsound, but useful for tests"),
1390 no_interleave_lints: bool = (false, parse_bool, [UNTRACKED],
1391 "don't interleave execution of lints; allows benchmarking individual lints"),
1392 crate_attr: Vec<String> = (Vec::new(), parse_string_push, [TRACKED],
1393 "inject the given attribute in the crate"),
1394 self_profile: bool = (false, parse_bool, [UNTRACKED],
1395 "run the self profiler"),
1396 profile_json: bool = (false, parse_bool, [UNTRACKED],
1397 "output a json file with profiler results"),
1398 emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
1399 "emits a section containing stack size metadata"),
1400 plt: Option<bool> = (None, parse_opt_bool, [TRACKED],
1401 "whether to use the PLT when calling into shared libraries;
1402 only has effect for PIC code on systems with ELF binaries
1403 (default: PLT is disabled if full relro is enabled)"),
1404 merge_functions: Option<MergeFunctions> = (None, parse_merge_functions, [TRACKED],
1405 "control the operation of the MergeFunctions LLVM pass, taking
1406 the same values as the target option of the same name"),
1409 pub fn default_lib_output() -> CrateType {
1413 pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
1414 let end = &sess.target.target.target_endian;
1415 let arch = &sess.target.target.arch;
1416 let wordsz = &sess.target.target.target_pointer_width;
1417 let os = &sess.target.target.target_os;
1418 let env = &sess.target.target.target_env;
1419 let vendor = &sess.target.target.target_vendor;
1420 let min_atomic_width = sess.target.target.min_atomic_width();
1421 let max_atomic_width = sess.target.target.max_atomic_width();
1422 let atomic_cas = sess.target.target.options.atomic_cas;
1424 let mut ret = FxHashSet::default();
1425 ret.reserve(6); // the minimum number of insertions
1427 ret.insert((Symbol::intern("target_os"), Some(Symbol::intern(os))));
1428 if let Some(ref fam) = sess.target.target.options.target_family {
1429 ret.insert((Symbol::intern("target_family"), Some(Symbol::intern(fam))));
1430 if fam == "windows" || fam == "unix" {
1431 ret.insert((Symbol::intern(fam), None));
1434 ret.insert((Symbol::intern("target_arch"), Some(Symbol::intern(arch))));
1435 ret.insert((Symbol::intern("target_endian"), Some(Symbol::intern(end))));
1437 Symbol::intern("target_pointer_width"),
1438 Some(Symbol::intern(wordsz)),
1440 ret.insert((Symbol::intern("target_env"), Some(Symbol::intern(env))));
1442 Symbol::intern("target_vendor"),
1443 Some(Symbol::intern(vendor)),
1445 if sess.target.target.options.has_elf_tls {
1446 ret.insert((Symbol::intern("target_thread_local"), None));
1448 for &i in &[8, 16, 32, 64, 128] {
1449 if i >= min_atomic_width && i <= max_atomic_width {
1450 let s = i.to_string();
1452 Symbol::intern("target_has_atomic"),
1453 Some(Symbol::intern(&s)),
1457 Symbol::intern("target_has_atomic"),
1458 Some(Symbol::intern("ptr")),
1464 ret.insert((Symbol::intern("target_has_atomic"), Some(Symbol::intern("cas"))));
1466 if sess.opts.debug_assertions {
1467 ret.insert((Symbol::intern("debug_assertions"), None));
1469 if sess.opts.crate_types.contains(&CrateType::ProcMacro) {
1470 ret.insert((Symbol::intern("proc_macro"), None));
1475 pub fn build_configuration(sess: &Session, mut user_cfg: ast::CrateConfig) -> ast::CrateConfig {
1476 // Combine the configuration requested by the session (command line) with
1477 // some default and generated configuration items
1478 let default_cfg = default_configuration(sess);
1479 // If the user wants a test runner, then add the test cfg
1481 user_cfg.insert((Symbol::intern("test"), None));
1483 user_cfg.extend(default_cfg.iter().cloned());
1487 pub fn build_target_config(opts: &Options, sp: &Handler) -> Config {
1488 let target = Target::search(&opts.target_triple).unwrap_or_else(|e| {
1489 sp.struct_fatal(&format!("Error loading target specification: {}", e))
1490 .help("Use `--print target-list` for a list of built-in targets")
1495 let (isize_ty, usize_ty) = match &target.target_pointer_width[..] {
1496 "16" => (ast::IntTy::I16, ast::UintTy::U16),
1497 "32" => (ast::IntTy::I32, ast::UintTy::U32),
1498 "64" => (ast::IntTy::I64, ast::UintTy::U64),
1499 w => sp.fatal(&format!(
1500 "target specification was invalid: \
1501 unrecognized target-pointer-width {}",
1513 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
1514 pub enum OptionStability {
1519 pub struct RustcOptGroup {
1520 pub apply: Box<dyn Fn(&mut getopts::Options) -> &mut getopts::Options>,
1521 pub name: &'static str,
1522 pub stability: OptionStability,
1525 impl RustcOptGroup {
1526 pub fn is_stable(&self) -> bool {
1527 self.stability == OptionStability::Stable
1530 pub fn stable<F>(name: &'static str, f: F) -> RustcOptGroup
1532 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1537 stability: OptionStability::Stable,
1541 pub fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup
1543 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1548 stability: OptionStability::Unstable,
1553 // The `opt` local module holds wrappers around the `getopts` API that
1554 // adds extra rustc-specific metadata to each option; such metadata
1555 // is exposed by . The public
1556 // functions below ending with `_u` are the functions that return
1557 // *unstable* options, i.e., options that are only enabled when the
1558 // user also passes the `-Z unstable-options` debugging flag.
1560 // The `fn opt_u` etc below are written so that we can use them
1561 // in the future; do not warn about them not being used right now.
1562 #![allow(dead_code)]
1565 use super::RustcOptGroup;
1567 pub type R = RustcOptGroup;
1568 pub type S = &'static str;
1570 fn stable<F>(name: S, f: F) -> R
1572 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1574 RustcOptGroup::stable(name, f)
1577 fn unstable<F>(name: S, f: F) -> R
1579 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1581 RustcOptGroup::unstable(name, f)
1584 fn longer(a: S, b: S) -> S {
1585 if a.len() > b.len() {
1592 pub fn opt_s(a: S, b: S, c: S, d: S) -> R {
1593 stable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1595 pub fn multi_s(a: S, b: S, c: S, d: S) -> R {
1596 stable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1598 pub fn flag_s(a: S, b: S, c: S) -> R {
1599 stable(longer(a, b), move |opts| opts.optflag(a, b, c))
1601 pub fn flagopt_s(a: S, b: S, c: S, d: S) -> R {
1602 stable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1604 pub fn flagmulti_s(a: S, b: S, c: S) -> R {
1605 stable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1608 pub fn opt(a: S, b: S, c: S, d: S) -> R {
1609 unstable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1611 pub fn multi(a: S, b: S, c: S, d: S) -> R {
1612 unstable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1614 pub fn flag(a: S, b: S, c: S) -> R {
1615 unstable(longer(a, b), move |opts| opts.optflag(a, b, c))
1617 pub fn flagopt(a: S, b: S, c: S, d: S) -> R {
1618 unstable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1620 pub fn flagmulti(a: S, b: S, c: S) -> R {
1621 unstable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1625 /// Returns the "short" subset of the rustc command line options,
1626 /// including metadata for each option, such as whether the option is
1627 /// part of the stable long-term interface for rustc.
1628 pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
1630 opt::flag_s("h", "help", "Display this message"),
1631 opt::multi_s("", "cfg", "Configure the compilation environment", "SPEC"),
1635 "Add a directory to the library search path. The
1636 optional KIND can be one of dependency, crate, native,
1637 framework or all (the default).",
1643 "Link the generated crate(s) to the specified native
1644 library NAME. The optional KIND can be one of
1645 static, dylib, or framework. If omitted, dylib is
1652 "Comma separated list of types of crates
1653 for the compiler to emit",
1654 "[bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]",
1659 "Comma separated list of crates to consider 'public'
1660 for linting purposes",
1666 "Specify the name of the crate being built",
1672 "Comma separated list of types of output for \
1673 the compiler to emit",
1674 "[asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]",
1679 "Comma separated list of compiler information to \
1681 "[crate-name|file-names|sysroot|cfg|target-list|\
1682 target-cpus|target-features|relocation-models|\
1683 code-models|tls-models|target-spec-json|native-static-libs]",
1685 opt::flagmulti_s("g", "", "Equivalent to -C debuginfo=2"),
1686 opt::flagmulti_s("O", "", "Equivalent to -C opt-level=2"),
1687 opt::opt_s("o", "", "Write output to <filename>", "FILENAME"),
1691 "Write output to compiler-chosen filename \
1698 "Provide a detailed explanation of an error \
1702 opt::flag_s("", "test", "Build a test harness"),
1706 "Target triple for which the code is compiled",
1709 opt::multi_s("W", "warn", "Set lint warnings", "OPT"),
1710 opt::multi_s("A", "allow", "Set lint allowed", "OPT"),
1711 opt::multi_s("D", "deny", "Set lint denied", "OPT"),
1712 opt::multi_s("F", "forbid", "Set lint forbidden", "OPT"),
1716 "Set the most restrictive lint level. \
1717 More restrictive lints are capped at this \
1721 opt::multi_s("C", "codegen", "Set a codegen option", "OPT[=VALUE]"),
1722 opt::flag_s("V", "version", "Print version info and exit"),
1723 opt::flag_s("v", "verbose", "Use verbose output"),
1727 /// Returns all rustc command line options, including metadata for
1728 /// each option, such as whether the option is part of the stable
1729 /// long-term interface for rustc.
1730 pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
1731 let mut opts = rustc_short_optgroups();
1736 "Specify where an external rust library is located",
1739 opt::opt_s("", "sysroot", "Override the system root", "PATH"),
1740 opt::multi("Z", "", "Set internal debugging options", "FLAG"),
1744 "How errors and other messages are produced",
1750 "Configure coloring of output:
1751 auto = colorize, if output goes to a tty (default);
1752 always = always colorize output;
1753 never = never colorize output",
1754 "auto|always|never",
1759 "Pretty-print the input instead of compiling;
1760 valid types are: `normal` (un-annotated source),
1761 `expanded` (crates expanded), or
1762 `expanded,identified` (fully parenthesized, AST nodes with IDs).",
1768 "Specify which edition of the compiler to use when compiling code.",
1773 "remap-path-prefix",
1774 "Remap source names in all output (compiler messages and output files)",
1781 // Convert strings provided as --cfg [cfgspec] into a crate_cfg
1782 pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> ast::CrateConfig {
1786 let sess = parse::ParseSess::new(FilePathMapping::empty());
1787 let filename = FileName::cfg_spec_source_code(&s);
1788 let mut parser = parse::new_parser_from_source_str(&sess, filename, s.to_string());
1790 macro_rules! error {($reason: expr) => {
1791 early_error(ErrorOutputType::default(),
1792 &format!(concat!("invalid `--cfg` argument: `{}` (", $reason, ")"), s));
1795 match &mut parser.parse_meta_item() {
1796 Ok(meta_item) if parser.token == token::Eof => {
1797 if meta_item.ident.segments.len() != 1 {
1798 error!("argument key must be an identifier");
1800 match &meta_item.node {
1801 MetaItemKind::List(..) => {
1802 error!(r#"expected `key` or `key="value"`"#);
1804 MetaItemKind::NameValue(lit) if !lit.node.is_str() => {
1805 error!("argument value must be a string");
1807 MetaItemKind::NameValue(..) | MetaItemKind::Word => {
1808 return (meta_item.name(), meta_item.value_str());
1813 Err(err) => err.cancel(),
1816 error!(r#"expected `key` or `key="value"`"#);
1818 .collect::<ast::CrateConfig>()
1821 pub fn get_cmd_lint_options(matches: &getopts::Matches,
1822 error_format: ErrorOutputType)
1823 -> (Vec<(String, lint::Level)>, bool, Option<lint::Level>) {
1824 let mut lint_opts = vec![];
1825 let mut describe_lints = false;
1827 for &level in &[lint::Allow, lint::Warn, lint::Deny, lint::Forbid] {
1828 for lint_name in matches.opt_strs(level.as_str()) {
1829 if lint_name == "help" {
1830 describe_lints = true;
1832 lint_opts.push((lint_name.replace("-", "_"), level));
1837 let lint_cap = matches.opt_str("cap-lints").map(|cap| {
1838 lint::Level::from_str(&cap)
1839 .unwrap_or_else(|| early_error(error_format, &format!("unknown lint level: `{}`", cap)))
1841 (lint_opts, describe_lints, lint_cap)
1844 pub fn build_session_options_and_crate_config(
1845 matches: &getopts::Matches,
1846 ) -> (Options, ast::CrateConfig) {
1847 let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
1848 Some("auto") => ColorConfig::Auto,
1849 Some("always") => ColorConfig::Always,
1850 Some("never") => ColorConfig::Never,
1852 None => ColorConfig::Auto,
1854 Some(arg) => early_error(
1855 ErrorOutputType::default(),
1857 "argument for --color must be auto, \
1858 always or never (instead was `{}`)",
1864 let edition = match matches.opt_str("edition") {
1865 Some(arg) => Edition::from_str(&arg).unwrap_or_else(|_|
1867 ErrorOutputType::default(),
1869 "argument for --edition must be one of: \
1870 {}. (instead was `{}`)",
1876 None => DEFAULT_EDITION,
1879 if !edition.is_stable() && !nightly_options::is_nightly_build() {
1881 ErrorOutputType::default(),
1883 "Edition {} is unstable and only \
1884 available for nightly builds of rustc.",
1891 // We need the opts_present check because the driver will send us Matches
1892 // with only stable options if no unstable options are used. Since error-format
1893 // is unstable, it will not be present. We have to use opts_present not
1894 // opt_present because the latter will panic.
1895 let error_format = if matches.opts_present(&["error-format".to_owned()]) {
1896 match matches.opt_str("error-format").as_ref().map(|s| &s[..]) {
1897 Some("human") => ErrorOutputType::HumanReadable(color),
1898 Some("json") => ErrorOutputType::Json(false),
1899 Some("pretty-json") => ErrorOutputType::Json(true),
1900 Some("short") => ErrorOutputType::Short(color),
1901 None => ErrorOutputType::HumanReadable(color),
1903 Some(arg) => early_error(
1904 ErrorOutputType::HumanReadable(color),
1906 "argument for --error-format must be `human`, `json` or \
1907 `short` (instead was `{}`)",
1913 ErrorOutputType::HumanReadable(color)
1916 let unparsed_crate_types = matches.opt_strs("crate-type");
1917 let crate_types = parse_crate_types_from_list(unparsed_crate_types)
1918 .unwrap_or_else(|e| early_error(error_format, &e[..]));
1921 let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
1923 let mut debugging_opts = build_debugging_options(matches, error_format);
1925 if !debugging_opts.unstable_options && error_format == ErrorOutputType::Json(true) {
1927 ErrorOutputType::Json(false),
1928 "--error-format=pretty-json is unstable",
1932 if debugging_opts.pgo_gen.is_some() && !debugging_opts.pgo_use.is_empty() {
1935 "options `-Z pgo-gen` and `-Z pgo-use` are exclusive",
1939 if matches.opt_present("extern-public") && !debugging_opts.unstable_options {
1941 ErrorOutputType::default(),
1942 "'--extern-public' is unstable and only \
1943 available for nightly builds of rustc."
1947 let mut extern_public: Option<Vec<String>> = matches.opt_str("extern-public").
1948 map(|s| s.split(',').map(|c| (*c).to_string()).collect());
1950 // FIXME - come up with a better way of handling this
1951 if let Some(p) = extern_public.as_mut() {
1952 p.push("core".to_string());
1953 p.push("std".to_string());
1957 let mut output_types = BTreeMap::new();
1958 if !debugging_opts.parse_only {
1959 for list in matches.opt_strs("emit") {
1960 for output_type in list.split(',') {
1961 let mut parts = output_type.splitn(2, '=');
1962 let shorthand = parts.next().unwrap();
1963 let output_type = OutputType::from_shorthand(shorthand).unwrap_or_else(||
1967 "unknown emission type: `{}` - expected one of: {}",
1969 OutputType::shorthands_display(),
1973 let path = parts.next().map(PathBuf::from);
1974 output_types.insert(output_type, path);
1978 if output_types.is_empty() {
1979 output_types.insert(OutputType::Exe, None);
1982 let mut cg = build_codegen_options(matches, error_format);
1983 let mut codegen_units = cg.codegen_units;
1984 let mut disable_thinlto = false;
1986 // Issue #30063: if user requests llvm-related output to one
1987 // particular path, disable codegen-units.
1988 let incompatible: Vec<_> = output_types
1990 .map(|ot_path| ot_path.0)
1991 .filter(|ot| !ot.is_compatible_with_codegen_units_and_single_output_file())
1992 .map(|ot| ot.shorthand())
1994 if !incompatible.is_empty() {
1995 match codegen_units {
1996 Some(n) if n > 1 => {
1997 if matches.opt_present("o") {
1998 for ot in &incompatible {
2002 "--emit={} with -o incompatible with \
2003 -C codegen-units=N for N > 1",
2008 early_warn(error_format, "resetting to default -C codegen-units=1");
2009 codegen_units = Some(1);
2010 disable_thinlto = true;
2014 codegen_units = Some(1);
2015 disable_thinlto = true;
2020 if debugging_opts.threads == Some(0) {
2023 "Value for threads must be a positive nonzero integer",
2027 if debugging_opts.threads.unwrap_or(1) > 1 && debugging_opts.fuel.is_some() {
2030 "Optimization fuel is incompatible with multiple threads",
2034 if codegen_units == Some(0) {
2037 "Value for codegen units must be a positive nonzero integer",
2041 let incremental = match (&debugging_opts.incremental, &cg.incremental) {
2042 (&Some(ref path1), &Some(ref path2)) => {
2047 "conflicting paths for `-Z incremental` and \
2048 `-C incremental` specified: {} versus {}",
2056 (&Some(ref path), &None) => Some(path),
2057 (&None, &Some(ref path)) => Some(path),
2058 (&None, &None) => None,
2059 }.map(|m| PathBuf::from(m));
2061 if debugging_opts.profile && incremental.is_some() {
2064 "can't instrument with gcov profiling when compiling incrementally",
2068 let mut prints = Vec::<PrintRequest>::new();
2069 if cg.target_cpu.as_ref().map_or(false, |s| s == "help") {
2070 prints.push(PrintRequest::TargetCPUs);
2071 cg.target_cpu = None;
2073 if cg.target_feature == "help" {
2074 prints.push(PrintRequest::TargetFeatures);
2075 cg.target_feature = String::new();
2077 if cg.relocation_model.as_ref().map_or(false, |s| s == "help") {
2078 prints.push(PrintRequest::RelocationModels);
2079 cg.relocation_model = None;
2081 if cg.code_model.as_ref().map_or(false, |s| s == "help") {
2082 prints.push(PrintRequest::CodeModels);
2083 cg.code_model = None;
2088 .map_or(false, |s| s == "help")
2090 prints.push(PrintRequest::TlsModels);
2091 debugging_opts.tls_model = None;
2096 let sysroot_opt = matches.opt_str("sysroot").map(|m| PathBuf::from(&m));
2097 let target_triple = if let Some(target) = matches.opt_str("target") {
2098 if target.ends_with(".json") {
2099 let path = Path::new(&target);
2100 TargetTriple::from_path(&path).unwrap_or_else(|_|
2101 early_error(error_format, &format!("target file {:?} does not exist", path)))
2103 TargetTriple::TargetTriple(target)
2106 TargetTriple::from_triple(host_triple())
2109 if matches.opt_present("O") {
2110 if cg.opt_level.is_some() {
2111 early_error(error_format, "-O and -C opt-level both provided");
2115 match cg.opt_level.as_ref().map(String::as_ref) {
2116 None => OptLevel::No,
2117 Some("0") => OptLevel::No,
2118 Some("1") => OptLevel::Less,
2119 Some("2") => OptLevel::Default,
2120 Some("3") => OptLevel::Aggressive,
2121 Some("s") => OptLevel::Size,
2122 Some("z") => OptLevel::SizeMin,
2127 "optimization level needs to be \
2128 between 0-3, s or z (instead was `{}`)",
2136 let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);
2137 let debuginfo = if matches.opt_present("g") {
2138 if cg.debuginfo.is_some() {
2139 early_error(error_format, "-g and -C debuginfo both provided");
2143 match cg.debuginfo {
2144 None | Some(0) => DebugInfo::None,
2145 Some(1) => DebugInfo::Limited,
2146 Some(2) => DebugInfo::Full,
2151 "debug info level needs to be between \
2152 0-2 (instead was `{}`)",
2160 let mut search_paths = vec![];
2161 for s in &matches.opt_strs("L") {
2162 search_paths.push(SearchPath::from_cli_opt(&s[..], error_format));
2169 // Parse string of the form "[KIND=]lib[:new_name]",
2170 // where KIND is one of "dylib", "framework", "static".
2171 let mut parts = s.splitn(2, '=');
2172 let kind = parts.next().unwrap();
2173 let (name, kind) = match (parts.next(), kind) {
2174 (None, name) => (name, None),
2175 (Some(name), "dylib") => (name, Some(cstore::NativeUnknown)),
2176 (Some(name), "framework") => (name, Some(cstore::NativeFramework)),
2177 (Some(name), "static") => (name, Some(cstore::NativeStatic)),
2178 (Some(name), "static-nobundle") => (name, Some(cstore::NativeStaticNobundle)),
2183 "unknown library kind `{}`, expected \
2184 one of dylib, framework, or static",
2190 if kind == Some(cstore::NativeStaticNobundle) && !nightly_options::is_nightly_build() {
2194 "the library kind 'static-nobundle' is only \
2195 accepted on the nightly compiler"
2199 let mut name_parts = name.splitn(2, ':');
2200 let name = name_parts.next().unwrap();
2201 let new_name = name_parts.next();
2202 (name.to_owned(), new_name.map(|n| n.to_owned()), kind)
2206 let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
2207 let test = matches.opt_present("test");
2209 let is_unstable_enabled = nightly_options::is_unstable_enabled(matches);
2211 prints.extend(matches.opt_strs("print").into_iter().map(|s| match &*s {
2212 "crate-name" => PrintRequest::CrateName,
2213 "file-names" => PrintRequest::FileNames,
2214 "sysroot" => PrintRequest::Sysroot,
2215 "cfg" => PrintRequest::Cfg,
2216 "target-list" => PrintRequest::TargetList,
2217 "target-cpus" => PrintRequest::TargetCPUs,
2218 "target-features" => PrintRequest::TargetFeatures,
2219 "relocation-models" => PrintRequest::RelocationModels,
2220 "code-models" => PrintRequest::CodeModels,
2221 "tls-models" => PrintRequest::TlsModels,
2222 "native-static-libs" => PrintRequest::NativeStaticLibs,
2223 "target-spec-json" => {
2224 if is_unstable_enabled {
2225 PrintRequest::TargetSpec
2229 "the `-Z unstable-options` flag must also be passed to \
2230 enable the target-spec-json print option",
2234 req => early_error(error_format, &format!("unknown print request `{}`", req)),
2237 let borrowck_mode = match debugging_opts.borrowck.as_ref().map(|s| &s[..]) {
2238 None | Some("ast") => BorrowckMode::Ast,
2239 Some("mir") => BorrowckMode::Mir,
2240 Some("compare") => BorrowckMode::Compare,
2241 Some("migrate") => BorrowckMode::Migrate,
2242 Some(m) => early_error(error_format, &format!("unknown borrowck mode `{}`", m)),
2245 if !cg.remark.is_empty() && debuginfo == DebugInfo::None {
2248 "-C remark requires \"-C debuginfo=n\" to show source locations",
2252 let mut externs: BTreeMap<_, BTreeSet<_>> = BTreeMap::new();
2253 for arg in &matches.opt_strs("extern") {
2254 let mut parts = arg.splitn(2, '=');
2255 let name = parts.next().unwrap_or_else(||
2256 early_error(error_format, "--extern value must not be empty"));
2257 let location = parts.next().map(|s| s.to_string());
2258 if location.is_none() && !is_unstable_enabled {
2261 "the `-Z unstable-options` flag must also be passed to \
2262 enable `--extern crate_name` without `=path`",
2267 .entry(name.to_owned())
2272 let crate_name = matches.opt_str("crate-name");
2274 let remap_path_prefix = matches
2275 .opt_strs("remap-path-prefix")
2278 let mut parts = remap.rsplitn(2, '='); // reverse iterator
2279 let to = parts.next();
2280 let from = parts.next();
2282 (Some(from), Some(to)) => (PathBuf::from(from), PathBuf::from(to)),
2285 "--remap-path-prefix must contain '=' between FROM and TO",
2294 optimize: opt_level,
2299 output_types: OutputTypes(output_types),
2301 maybe_sysroot: sysroot_opt,
2310 externs: Externs(externs),
2314 unstable_features: UnstableFeatures::from_environment(),
2316 actually_rustdoc: false,
2317 cli_forced_codegen_units: codegen_units,
2318 cli_forced_thinlto_off: disable_thinlto,
2327 pub fn parse_crate_types_from_list(list_list: Vec<String>) -> Result<Vec<CrateType>, String> {
2328 let mut crate_types: Vec<CrateType> = Vec::new();
2329 for unparsed_crate_type in &list_list {
2330 for part in unparsed_crate_type.split(',') {
2331 let new_part = match part {
2332 "lib" => default_lib_output(),
2333 "rlib" => CrateType::Rlib,
2334 "staticlib" => CrateType::Staticlib,
2335 "dylib" => CrateType::Dylib,
2336 "cdylib" => CrateType::Cdylib,
2337 "bin" => CrateType::Executable,
2338 "proc-macro" => CrateType::ProcMacro,
2339 _ => return Err(format!("unknown crate type: `{}`", part))
2341 if !crate_types.contains(&new_part) {
2342 crate_types.push(new_part)
2350 pub mod nightly_options {
2352 use syntax::feature_gate::UnstableFeatures;
2353 use super::{ErrorOutputType, OptionStability, RustcOptGroup};
2354 use session::early_error;
2356 pub fn is_unstable_enabled(matches: &getopts::Matches) -> bool {
2361 .any(|x| *x == "unstable-options")
2364 pub fn is_nightly_build() -> bool {
2365 UnstableFeatures::from_environment().is_nightly_build()
2368 pub fn check_nightly_options(matches: &getopts::Matches, flags: &[RustcOptGroup]) {
2369 let has_z_unstable_option = matches
2372 .any(|x| *x == "unstable-options");
2373 let really_allows_unstable_options =
2374 UnstableFeatures::from_environment().is_nightly_build();
2376 for opt in flags.iter() {
2377 if opt.stability == OptionStability::Stable {
2380 if !matches.opt_present(opt.name) {
2383 if opt.name != "Z" && !has_z_unstable_option {
2385 ErrorOutputType::default(),
2387 "the `-Z unstable-options` flag must also be passed to enable \
2393 if really_allows_unstable_options {
2396 match opt.stability {
2397 OptionStability::Unstable => {
2399 "the option `{}` is only accepted on the \
2403 early_error(ErrorOutputType::default(), &msg);
2405 OptionStability::Stable => {}
2411 impl fmt::Display for CrateType {
2412 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
2414 CrateType::Executable => "bin".fmt(f),
2415 CrateType::Dylib => "dylib".fmt(f),
2416 CrateType::Rlib => "rlib".fmt(f),
2417 CrateType::Staticlib => "staticlib".fmt(f),
2418 CrateType::Cdylib => "cdylib".fmt(f),
2419 CrateType::ProcMacro => "proc-macro".fmt(f),
2424 /// Command-line arguments passed to the compiler have to be incorporated with
2425 /// the dependency tracking system for incremental compilation. This module
2426 /// provides some utilities to make this more convenient.
2428 /// The values of all command-line arguments that are relevant for dependency
2429 /// tracking are hashed into a single value that determines whether the
2430 /// incremental compilation cache can be re-used or not. This hashing is done
2431 /// via the DepTrackingHash trait defined below, since the standard Hash
2432 /// implementation might not be suitable (e.g., arguments are stored in a Vec,
2433 /// the hash of which is order dependent, but we might not want the order of
2434 /// arguments to make a difference for the hash).
2436 /// However, since the value provided by Hash::hash often *is* suitable,
2437 /// especially for primitive types, there is the
2438 /// impl_dep_tracking_hash_via_hash!() macro that allows to simply reuse the
2439 /// Hash implementation for DepTrackingHash. It's important though that
2440 /// we have an opt-in scheme here, so one is hopefully forced to think about
2441 /// how the hash should be calculated when adding a new command-line argument.
2445 use std::collections::BTreeMap;
2446 use std::hash::Hash;
2447 use std::path::PathBuf;
2448 use std::collections::hash_map::DefaultHasher;
2449 use super::{CrateType, DebugInfo, ErrorOutputType, OptLevel, OutputTypes,
2450 Passes, Sanitizer, LtoCli, CrossLangLto};
2451 use syntax::feature_gate::UnstableFeatures;
2452 use rustc_target::spec::{MergeFunctions, PanicStrategy, RelroLevel, TargetTriple};
2453 use syntax::edition::Edition;
2455 pub trait DepTrackingHash {
2456 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType);
2459 macro_rules! impl_dep_tracking_hash_via_hash {
2461 impl DepTrackingHash for $t {
2462 fn hash(&self, hasher: &mut DefaultHasher, _: ErrorOutputType) {
2463 Hash::hash(self, hasher);
2469 macro_rules! impl_dep_tracking_hash_for_sortable_vec_of {
2471 impl DepTrackingHash for Vec<$t> {
2472 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2473 let mut elems: Vec<&$t> = self.iter().collect();
2475 Hash::hash(&elems.len(), hasher);
2476 for (index, elem) in elems.iter().enumerate() {
2477 Hash::hash(&index, hasher);
2478 DepTrackingHash::hash(*elem, hasher, error_format);
2485 impl_dep_tracking_hash_via_hash!(bool);
2486 impl_dep_tracking_hash_via_hash!(usize);
2487 impl_dep_tracking_hash_via_hash!(u64);
2488 impl_dep_tracking_hash_via_hash!(String);
2489 impl_dep_tracking_hash_via_hash!(PathBuf);
2490 impl_dep_tracking_hash_via_hash!(lint::Level);
2491 impl_dep_tracking_hash_via_hash!(Option<bool>);
2492 impl_dep_tracking_hash_via_hash!(Option<usize>);
2493 impl_dep_tracking_hash_via_hash!(Option<String>);
2494 impl_dep_tracking_hash_via_hash!(Option<(String, u64)>);
2495 impl_dep_tracking_hash_via_hash!(Option<Vec<String>>);
2496 impl_dep_tracking_hash_via_hash!(Option<MergeFunctions>);
2497 impl_dep_tracking_hash_via_hash!(Option<PanicStrategy>);
2498 impl_dep_tracking_hash_via_hash!(Option<RelroLevel>);
2499 impl_dep_tracking_hash_via_hash!(Option<lint::Level>);
2500 impl_dep_tracking_hash_via_hash!(Option<PathBuf>);
2501 impl_dep_tracking_hash_via_hash!(Option<cstore::NativeLibraryKind>);
2502 impl_dep_tracking_hash_via_hash!(CrateType);
2503 impl_dep_tracking_hash_via_hash!(MergeFunctions);
2504 impl_dep_tracking_hash_via_hash!(PanicStrategy);
2505 impl_dep_tracking_hash_via_hash!(RelroLevel);
2506 impl_dep_tracking_hash_via_hash!(Passes);
2507 impl_dep_tracking_hash_via_hash!(OptLevel);
2508 impl_dep_tracking_hash_via_hash!(LtoCli);
2509 impl_dep_tracking_hash_via_hash!(DebugInfo);
2510 impl_dep_tracking_hash_via_hash!(UnstableFeatures);
2511 impl_dep_tracking_hash_via_hash!(OutputTypes);
2512 impl_dep_tracking_hash_via_hash!(cstore::NativeLibraryKind);
2513 impl_dep_tracking_hash_via_hash!(Sanitizer);
2514 impl_dep_tracking_hash_via_hash!(Option<Sanitizer>);
2515 impl_dep_tracking_hash_via_hash!(TargetTriple);
2516 impl_dep_tracking_hash_via_hash!(Edition);
2517 impl_dep_tracking_hash_via_hash!(CrossLangLto);
2519 impl_dep_tracking_hash_for_sortable_vec_of!(String);
2520 impl_dep_tracking_hash_for_sortable_vec_of!(PathBuf);
2521 impl_dep_tracking_hash_for_sortable_vec_of!(CrateType);
2522 impl_dep_tracking_hash_for_sortable_vec_of!((String, lint::Level));
2523 impl_dep_tracking_hash_for_sortable_vec_of!((
2526 Option<cstore::NativeLibraryKind>
2528 impl_dep_tracking_hash_for_sortable_vec_of!((String, u64));
2530 impl<T1, T2> DepTrackingHash for (T1, T2)
2532 T1: DepTrackingHash,
2533 T2: DepTrackingHash,
2535 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2536 Hash::hash(&0, hasher);
2537 DepTrackingHash::hash(&self.0, hasher, error_format);
2538 Hash::hash(&1, hasher);
2539 DepTrackingHash::hash(&self.1, hasher, error_format);
2543 impl<T1, T2, T3> DepTrackingHash for (T1, T2, T3)
2545 T1: DepTrackingHash,
2546 T2: DepTrackingHash,
2547 T3: DepTrackingHash,
2549 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2550 Hash::hash(&0, hasher);
2551 DepTrackingHash::hash(&self.0, hasher, error_format);
2552 Hash::hash(&1, hasher);
2553 DepTrackingHash::hash(&self.1, hasher, error_format);
2554 Hash::hash(&2, hasher);
2555 DepTrackingHash::hash(&self.2, hasher, error_format);
2559 // This is a stable hash because BTreeMap is a sorted container
2561 sub_hashes: BTreeMap<&'static str, &dyn DepTrackingHash>,
2562 hasher: &mut DefaultHasher,
2563 error_format: ErrorOutputType,
2565 for (key, sub_hash) in sub_hashes {
2566 // Using Hash::hash() instead of DepTrackingHash::hash() is fine for
2567 // the keys, as they are just plain strings
2568 Hash::hash(&key.len(), hasher);
2569 Hash::hash(key, hasher);
2570 sub_hash.hash(hasher, error_format);
2581 use session::config::{build_configuration, build_session_options_and_crate_config};
2582 use session::config::{LtoCli, CrossLangLto};
2583 use session::build_session;
2584 use session::search_paths::SearchPath;
2585 use std::collections::{BTreeMap, BTreeSet};
2586 use std::iter::FromIterator;
2587 use std::path::PathBuf;
2588 use super::{Externs, OutputType, OutputTypes};
2589 use rustc_target::spec::{MergeFunctions, PanicStrategy, RelroLevel};
2590 use syntax::symbol::Symbol;
2591 use syntax::edition::{Edition, DEFAULT_EDITION};
2595 fn optgroups() -> getopts::Options {
2596 let mut opts = getopts::Options::new();
2597 for group in super::rustc_optgroups() {
2598 (group.apply)(&mut opts);
2603 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
2604 BTreeMap::from_iter(entries.into_iter())
2607 fn mk_set<V: Ord>(entries: Vec<V>) -> BTreeSet<V> {
2608 BTreeSet::from_iter(entries.into_iter())
2611 // When the user supplies --test we should implicitly supply --cfg test
2613 fn test_switch_implies_cfg_test() {
2614 syntax::with_globals(|| {
2615 let matches = &match optgroups().parse(&["--test".to_string()]) {
2617 Err(f) => panic!("test_switch_implies_cfg_test: {}", f),
2619 let registry = errors::registry::Registry::new(&[]);
2620 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2621 let sess = build_session(sessopts, None, registry);
2622 let cfg = build_configuration(&sess, cfg);
2623 assert!(cfg.contains(&(Symbol::intern("test"), None)));
2627 // When the user supplies --test and --cfg test, don't implicitly add
2628 // another --cfg test
2630 fn test_switch_implies_cfg_test_unless_cfg_test() {
2631 syntax::with_globals(|| {
2632 let matches = &match optgroups().parse(&["--test".to_string(),
2633 "--cfg=test".to_string()]) {
2635 Err(f) => panic!("test_switch_implies_cfg_test_unless_cfg_test: {}", f),
2637 let registry = errors::registry::Registry::new(&[]);
2638 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2639 let sess = build_session(sessopts, None, registry);
2640 let cfg = build_configuration(&sess, cfg);
2641 let mut test_items = cfg.iter().filter(|&&(name, _)| name == "test");
2642 assert!(test_items.next().is_some());
2643 assert!(test_items.next().is_none());
2648 fn test_can_print_warnings() {
2649 syntax::with_globals(|| {
2650 let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
2651 let registry = errors::registry::Registry::new(&[]);
2652 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2653 let sess = build_session(sessopts, None, registry);
2654 assert!(!sess.diagnostic().flags.can_emit_warnings);
2657 syntax::with_globals(|| {
2658 let matches = optgroups()
2659 .parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()])
2661 let registry = errors::registry::Registry::new(&[]);
2662 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2663 let sess = build_session(sessopts, None, registry);
2664 assert!(sess.diagnostic().flags.can_emit_warnings);
2667 syntax::with_globals(|| {
2668 let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
2669 let registry = errors::registry::Registry::new(&[]);
2670 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2671 let sess = build_session(sessopts, None, registry);
2672 assert!(sess.diagnostic().flags.can_emit_warnings);
2677 fn test_output_types_tracking_hash_different_paths() {
2678 let mut v1 = Options::default();
2679 let mut v2 = Options::default();
2680 let mut v3 = Options::default();
2683 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("./some/thing")))]);
2685 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("/some/thing")))]);
2686 v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
2688 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2689 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2690 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2693 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2694 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2695 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2699 fn test_output_types_tracking_hash_different_construction_order() {
2700 let mut v1 = Options::default();
2701 let mut v2 = Options::default();
2703 v1.output_types = OutputTypes::new(&[
2704 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2705 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2708 v2.output_types = OutputTypes::new(&[
2709 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2710 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2713 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2716 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2720 fn test_externs_tracking_hash_different_construction_order() {
2721 let mut v1 = Options::default();
2722 let mut v2 = Options::default();
2723 let mut v3 = Options::default();
2725 v1.externs = Externs::new(mk_map(vec![
2728 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2732 mk_set(vec![Some(String::from("e")), Some(String::from("f"))]),
2736 v2.externs = Externs::new(mk_map(vec![
2739 mk_set(vec![Some(String::from("e")), Some(String::from("f"))]),
2743 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2747 v3.externs = Externs::new(mk_map(vec![
2750 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2754 mk_set(vec![Some(String::from("f")), Some(String::from("e"))]),
2758 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2759 assert_eq!(v1.dep_tracking_hash(), v3.dep_tracking_hash());
2760 assert_eq!(v2.dep_tracking_hash(), v3.dep_tracking_hash());
2763 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2764 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2765 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2769 fn test_lints_tracking_hash_different_values() {
2770 let mut v1 = Options::default();
2771 let mut v2 = Options::default();
2772 let mut v3 = Options::default();
2774 v1.lint_opts = vec![
2775 (String::from("a"), lint::Allow),
2776 (String::from("b"), lint::Warn),
2777 (String::from("c"), lint::Deny),
2778 (String::from("d"), lint::Forbid),
2781 v2.lint_opts = vec![
2782 (String::from("a"), lint::Allow),
2783 (String::from("b"), lint::Warn),
2784 (String::from("X"), lint::Deny),
2785 (String::from("d"), lint::Forbid),
2788 v3.lint_opts = vec![
2789 (String::from("a"), lint::Allow),
2790 (String::from("b"), lint::Warn),
2791 (String::from("c"), lint::Forbid),
2792 (String::from("d"), lint::Deny),
2795 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2796 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2797 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2800 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2801 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2802 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2806 fn test_lints_tracking_hash_different_construction_order() {
2807 let mut v1 = Options::default();
2808 let mut v2 = Options::default();
2810 v1.lint_opts = vec![
2811 (String::from("a"), lint::Allow),
2812 (String::from("b"), lint::Warn),
2813 (String::from("c"), lint::Deny),
2814 (String::from("d"), lint::Forbid),
2817 v2.lint_opts = vec![
2818 (String::from("a"), lint::Allow),
2819 (String::from("c"), lint::Deny),
2820 (String::from("b"), lint::Warn),
2821 (String::from("d"), lint::Forbid),
2824 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2827 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2828 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2832 fn test_search_paths_tracking_hash_different_order() {
2833 let mut v1 = Options::default();
2834 let mut v2 = Options::default();
2835 let mut v3 = Options::default();
2836 let mut v4 = Options::default();
2840 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2842 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2844 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2846 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2848 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2851 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2853 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2855 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2857 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2859 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2862 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2864 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2866 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2868 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2870 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2873 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2875 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2877 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2879 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2881 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2883 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2884 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2885 assert!(v1.dep_tracking_hash() == v4.dep_tracking_hash());
2888 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2889 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2890 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2891 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2895 fn test_native_libs_tracking_hash_different_values() {
2896 let mut v1 = Options::default();
2897 let mut v2 = Options::default();
2898 let mut v3 = Options::default();
2899 let mut v4 = Options::default();
2903 (String::from("a"), None, Some(cstore::NativeStatic)),
2904 (String::from("b"), None, Some(cstore::NativeFramework)),
2905 (String::from("c"), None, Some(cstore::NativeUnknown)),
2910 (String::from("a"), None, Some(cstore::NativeStatic)),
2911 (String::from("X"), None, Some(cstore::NativeFramework)),
2912 (String::from("c"), None, Some(cstore::NativeUnknown)),
2917 (String::from("a"), None, Some(cstore::NativeStatic)),
2918 (String::from("b"), None, Some(cstore::NativeStatic)),
2919 (String::from("c"), None, Some(cstore::NativeUnknown)),
2924 (String::from("a"), None, Some(cstore::NativeStatic)),
2927 Some(String::from("X")),
2928 Some(cstore::NativeFramework),
2930 (String::from("c"), None, Some(cstore::NativeUnknown)),
2933 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2934 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2935 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
2938 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2939 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2940 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2941 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2945 fn test_native_libs_tracking_hash_different_order() {
2946 let mut v1 = Options::default();
2947 let mut v2 = Options::default();
2948 let mut v3 = Options::default();
2952 (String::from("a"), None, Some(cstore::NativeStatic)),
2953 (String::from("b"), None, Some(cstore::NativeFramework)),
2954 (String::from("c"), None, Some(cstore::NativeUnknown)),
2958 (String::from("b"), None, Some(cstore::NativeFramework)),
2959 (String::from("a"), None, Some(cstore::NativeStatic)),
2960 (String::from("c"), None, Some(cstore::NativeUnknown)),
2964 (String::from("c"), None, Some(cstore::NativeUnknown)),
2965 (String::from("a"), None, Some(cstore::NativeStatic)),
2966 (String::from("b"), None, Some(cstore::NativeFramework)),
2969 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2970 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2971 assert!(v2.dep_tracking_hash() == v3.dep_tracking_hash());
2974 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2975 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2976 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2980 fn test_codegen_options_tracking_hash() {
2981 let reference = Options::default();
2982 let mut opts = Options::default();
2984 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
2985 opts.cg.ar = Some(String::from("abc"));
2986 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2988 opts.cg.linker = Some(PathBuf::from("linker"));
2989 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2991 opts.cg.link_args = Some(vec![String::from("abc"), String::from("def")]);
2992 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2994 opts.cg.link_dead_code = true;
2995 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2997 opts.cg.rpath = true;
2998 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3000 opts.cg.extra_filename = String::from("extra-filename");
3001 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3003 opts.cg.codegen_units = Some(42);
3004 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3006 opts.cg.remark = super::Passes::Some(vec![String::from("pass1"), String::from("pass2")]);
3007 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3009 opts.cg.save_temps = true;
3010 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3012 opts.cg.incremental = Some(String::from("abc"));
3013 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3015 // Make sure changing a [TRACKED] option changes the hash
3016 opts = reference.clone();
3017 opts.cg.lto = LtoCli::Fat;
3018 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3020 opts = reference.clone();
3021 opts.cg.target_cpu = Some(String::from("abc"));
3022 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3024 opts = reference.clone();
3025 opts.cg.target_feature = String::from("all the features, all of them");
3026 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3028 opts = reference.clone();
3029 opts.cg.passes = vec![String::from("1"), String::from("2")];
3030 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3032 opts = reference.clone();
3033 opts.cg.llvm_args = vec![String::from("1"), String::from("2")];
3034 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3036 opts = reference.clone();
3037 opts.cg.overflow_checks = Some(true);
3038 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3040 opts = reference.clone();
3041 opts.cg.no_prepopulate_passes = true;
3042 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3044 opts = reference.clone();
3045 opts.cg.no_vectorize_loops = true;
3046 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3048 opts = reference.clone();
3049 opts.cg.no_vectorize_slp = true;
3050 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3052 opts = reference.clone();
3053 opts.cg.soft_float = true;
3054 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3056 opts = reference.clone();
3057 opts.cg.prefer_dynamic = true;
3058 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3060 opts = reference.clone();
3061 opts.cg.no_integrated_as = true;
3062 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3064 opts = reference.clone();
3065 opts.cg.no_redzone = Some(true);
3066 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3068 opts = reference.clone();
3069 opts.cg.relocation_model = Some(String::from("relocation model"));
3070 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3072 opts = reference.clone();
3073 opts.cg.code_model = Some(String::from("code model"));
3074 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3076 opts = reference.clone();
3077 opts.debugging_opts.tls_model = Some(String::from("tls model"));
3078 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3080 opts = reference.clone();
3081 opts.debugging_opts.pgo_gen = Some(String::from("abc"));
3082 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3084 opts = reference.clone();
3085 opts.debugging_opts.pgo_use = String::from("abc");
3086 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3088 opts = reference.clone();
3089 opts.cg.metadata = vec![String::from("A"), String::from("B")];
3090 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3092 opts = reference.clone();
3093 opts.cg.debuginfo = Some(0xdeadbeef);
3094 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3096 opts = reference.clone();
3097 opts.cg.debuginfo = Some(0xba5eba11);
3098 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3100 opts = reference.clone();
3101 opts.cg.force_frame_pointers = Some(false);
3102 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3104 opts = reference.clone();
3105 opts.cg.debug_assertions = Some(true);
3106 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3108 opts = reference.clone();
3109 opts.cg.inline_threshold = Some(0xf007ba11);
3110 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3112 opts = reference.clone();
3113 opts.cg.panic = Some(PanicStrategy::Abort);
3114 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3118 fn test_debugging_options_tracking_hash() {
3119 let reference = Options::default();
3120 let mut opts = Options::default();
3122 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
3123 opts.debugging_opts.verbose = true;
3124 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3125 opts.debugging_opts.time_passes = true;
3126 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3127 opts.debugging_opts.count_llvm_insns = true;
3128 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3129 opts.debugging_opts.time_llvm_passes = true;
3130 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3131 opts.debugging_opts.input_stats = true;
3132 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3133 opts.debugging_opts.codegen_stats = true;
3134 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3135 opts.debugging_opts.borrowck_stats = true;
3136 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3137 opts.debugging_opts.meta_stats = true;
3138 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3139 opts.debugging_opts.print_link_args = true;
3140 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3141 opts.debugging_opts.print_llvm_passes = true;
3142 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3143 opts.debugging_opts.ast_json = true;
3144 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3145 opts.debugging_opts.ast_json_noexpand = true;
3146 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3147 opts.debugging_opts.ls = true;
3148 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3149 opts.debugging_opts.save_analysis = true;
3150 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3151 opts.debugging_opts.flowgraph_print_loans = true;
3152 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3153 opts.debugging_opts.flowgraph_print_moves = true;
3154 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3155 opts.debugging_opts.flowgraph_print_assigns = true;
3156 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3157 opts.debugging_opts.flowgraph_print_all = true;
3158 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3159 opts.debugging_opts.print_region_graph = true;
3160 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3161 opts.debugging_opts.parse_only = true;
3162 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3163 opts.debugging_opts.incremental = Some(String::from("abc"));
3164 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3165 opts.debugging_opts.dump_dep_graph = true;
3166 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3167 opts.debugging_opts.query_dep_graph = true;
3168 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3169 opts.debugging_opts.no_analysis = true;
3170 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3171 opts.debugging_opts.unstable_options = true;
3172 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3173 opts.debugging_opts.trace_macros = true;
3174 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3175 opts.debugging_opts.keep_hygiene_data = true;
3176 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3177 opts.debugging_opts.keep_ast = true;
3178 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3179 opts.debugging_opts.print_mono_items = Some(String::from("abc"));
3180 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3181 opts.debugging_opts.dump_mir = Some(String::from("abc"));
3182 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3183 opts.debugging_opts.dump_mir_dir = String::from("abc");
3184 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3185 opts.debugging_opts.dump_mir_graphviz = true;
3186 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3188 // Make sure changing a [TRACKED] option changes the hash
3189 opts = reference.clone();
3190 opts.debugging_opts.asm_comments = true;
3191 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3193 opts = reference.clone();
3194 opts.debugging_opts.verify_llvm_ir = true;
3195 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3197 opts = reference.clone();
3198 opts.debugging_opts.no_landing_pads = true;
3199 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3201 opts = reference.clone();
3202 opts.debugging_opts.fewer_names = true;
3203 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3205 opts = reference.clone();
3206 opts.debugging_opts.no_codegen = true;
3207 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3209 opts = reference.clone();
3210 opts.debugging_opts.treat_err_as_bug = true;
3211 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3213 opts = reference.clone();
3214 opts.debugging_opts.report_delayed_bugs = true;
3215 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3217 opts = reference.clone();
3218 opts.debugging_opts.continue_parse_after_error = true;
3219 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3221 opts = reference.clone();
3222 opts.debugging_opts.extra_plugins = vec![String::from("plugin1"), String::from("plugin2")];
3223 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3225 opts = reference.clone();
3226 opts.debugging_opts.force_overflow_checks = Some(true);
3227 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3229 opts = reference.clone();
3230 opts.debugging_opts.show_span = Some(String::from("abc"));
3231 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3233 opts = reference.clone();
3234 opts.debugging_opts.mir_opt_level = 3;
3235 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3237 opts = reference.clone();
3238 opts.debugging_opts.relro_level = Some(RelroLevel::Full);
3239 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3241 opts = reference.clone();
3242 opts.debugging_opts.cross_lang_lto = CrossLangLto::LinkerPluginAuto;
3243 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3245 opts = reference.clone();
3246 opts.debugging_opts.merge_functions = Some(MergeFunctions::Disabled);
3247 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3251 fn test_edition_parsing() {
3252 // test default edition
3253 let options = Options::default();
3254 assert!(options.edition == DEFAULT_EDITION);
3256 let matches = optgroups()
3257 .parse(&["--edition=2018".to_string()])
3259 let (sessopts, _) = build_session_options_and_crate_config(&matches);
3260 assert!(sessopts.edition == Edition::Edition2018)