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 private when
416 // checking leaked private dependency types in public interfaces
417 extern_private: 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,
613 extern_private: Vec::new()
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 "Specify the name of the crate being built",
1665 "Comma separated list of types of output for \
1666 the compiler to emit",
1667 "[asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]",
1672 "Comma separated list of compiler information to \
1674 "[crate-name|file-names|sysroot|cfg|target-list|\
1675 target-cpus|target-features|relocation-models|\
1676 code-models|tls-models|target-spec-json|native-static-libs]",
1678 opt::flagmulti_s("g", "", "Equivalent to -C debuginfo=2"),
1679 opt::flagmulti_s("O", "", "Equivalent to -C opt-level=2"),
1680 opt::opt_s("o", "", "Write output to <filename>", "FILENAME"),
1684 "Write output to compiler-chosen filename \
1691 "Provide a detailed explanation of an error \
1695 opt::flag_s("", "test", "Build a test harness"),
1699 "Target triple for which the code is compiled",
1702 opt::multi_s("W", "warn", "Set lint warnings", "OPT"),
1703 opt::multi_s("A", "allow", "Set lint allowed", "OPT"),
1704 opt::multi_s("D", "deny", "Set lint denied", "OPT"),
1705 opt::multi_s("F", "forbid", "Set lint forbidden", "OPT"),
1709 "Set the most restrictive lint level. \
1710 More restrictive lints are capped at this \
1714 opt::multi_s("C", "codegen", "Set a codegen option", "OPT[=VALUE]"),
1715 opt::flag_s("V", "version", "Print version info and exit"),
1716 opt::flag_s("v", "verbose", "Use verbose output"),
1720 /// Returns all rustc command line options, including metadata for
1721 /// each option, such as whether the option is part of the stable
1722 /// long-term interface for rustc.
1723 pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
1724 let mut opts = rustc_short_optgroups();
1729 "Specify where an external rust library is located",
1735 "Specify where an extern rust library is located, marking it as a private dependency",
1738 opt::opt_s("", "sysroot", "Override the system root", "PATH"),
1739 opt::multi("Z", "", "Set internal debugging options", "FLAG"),
1743 "How errors and other messages are produced",
1749 "Configure coloring of output:
1750 auto = colorize, if output goes to a tty (default);
1751 always = always colorize output;
1752 never = never colorize output",
1753 "auto|always|never",
1758 "Pretty-print the input instead of compiling;
1759 valid types are: `normal` (un-annotated source),
1760 `expanded` (crates expanded), or
1761 `expanded,identified` (fully parenthesized, AST nodes with IDs).",
1767 "Specify which edition of the compiler to use when compiling code.",
1772 "remap-path-prefix",
1773 "Remap source names in all output (compiler messages and output files)",
1780 // Convert strings provided as --cfg [cfgspec] into a crate_cfg
1781 pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> ast::CrateConfig {
1785 let sess = parse::ParseSess::new(FilePathMapping::empty());
1786 let filename = FileName::cfg_spec_source_code(&s);
1787 let mut parser = parse::new_parser_from_source_str(&sess, filename, s.to_string());
1789 macro_rules! error {($reason: expr) => {
1790 early_error(ErrorOutputType::default(),
1791 &format!(concat!("invalid `--cfg` argument: `{}` (", $reason, ")"), s));
1794 match &mut parser.parse_meta_item() {
1795 Ok(meta_item) if parser.token == token::Eof => {
1796 if meta_item.ident.segments.len() != 1 {
1797 error!("argument key must be an identifier");
1799 match &meta_item.node {
1800 MetaItemKind::List(..) => {
1801 error!(r#"expected `key` or `key="value"`"#);
1803 MetaItemKind::NameValue(lit) if !lit.node.is_str() => {
1804 error!("argument value must be a string");
1806 MetaItemKind::NameValue(..) | MetaItemKind::Word => {
1807 return (meta_item.name(), meta_item.value_str());
1812 Err(err) => err.cancel(),
1815 error!(r#"expected `key` or `key="value"`"#);
1817 .collect::<ast::CrateConfig>()
1820 pub fn get_cmd_lint_options(matches: &getopts::Matches,
1821 error_format: ErrorOutputType)
1822 -> (Vec<(String, lint::Level)>, bool, Option<lint::Level>) {
1823 let mut lint_opts = vec![];
1824 let mut describe_lints = false;
1826 for &level in &[lint::Allow, lint::Warn, lint::Deny, lint::Forbid] {
1827 for lint_name in matches.opt_strs(level.as_str()) {
1828 if lint_name == "help" {
1829 describe_lints = true;
1831 lint_opts.push((lint_name.replace("-", "_"), level));
1836 let lint_cap = matches.opt_str("cap-lints").map(|cap| {
1837 lint::Level::from_str(&cap)
1838 .unwrap_or_else(|| early_error(error_format, &format!("unknown lint level: `{}`", cap)))
1840 (lint_opts, describe_lints, lint_cap)
1843 pub fn build_session_options_and_crate_config(
1844 matches: &getopts::Matches,
1845 ) -> (Options, ast::CrateConfig) {
1846 let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
1847 Some("auto") => ColorConfig::Auto,
1848 Some("always") => ColorConfig::Always,
1849 Some("never") => ColorConfig::Never,
1851 None => ColorConfig::Auto,
1853 Some(arg) => early_error(
1854 ErrorOutputType::default(),
1856 "argument for --color must be auto, \
1857 always or never (instead was `{}`)",
1863 let edition = match matches.opt_str("edition") {
1864 Some(arg) => Edition::from_str(&arg).unwrap_or_else(|_|
1866 ErrorOutputType::default(),
1868 "argument for --edition must be one of: \
1869 {}. (instead was `{}`)",
1875 None => DEFAULT_EDITION,
1878 if !edition.is_stable() && !nightly_options::is_nightly_build() {
1880 ErrorOutputType::default(),
1882 "Edition {} is unstable and only \
1883 available for nightly builds of rustc.",
1890 // We need the opts_present check because the driver will send us Matches
1891 // with only stable options if no unstable options are used. Since error-format
1892 // is unstable, it will not be present. We have to use opts_present not
1893 // opt_present because the latter will panic.
1894 let error_format = if matches.opts_present(&["error-format".to_owned()]) {
1895 match matches.opt_str("error-format").as_ref().map(|s| &s[..]) {
1896 Some("human") => ErrorOutputType::HumanReadable(color),
1897 Some("json") => ErrorOutputType::Json(false),
1898 Some("pretty-json") => ErrorOutputType::Json(true),
1899 Some("short") => ErrorOutputType::Short(color),
1900 None => ErrorOutputType::HumanReadable(color),
1902 Some(arg) => early_error(
1903 ErrorOutputType::HumanReadable(color),
1905 "argument for --error-format must be `human`, `json` or \
1906 `short` (instead was `{}`)",
1912 ErrorOutputType::HumanReadable(color)
1915 let unparsed_crate_types = matches.opt_strs("crate-type");
1916 let crate_types = parse_crate_types_from_list(unparsed_crate_types)
1917 .unwrap_or_else(|e| early_error(error_format, &e[..]));
1920 let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
1922 let mut debugging_opts = build_debugging_options(matches, error_format);
1924 if !debugging_opts.unstable_options && error_format == ErrorOutputType::Json(true) {
1926 ErrorOutputType::Json(false),
1927 "--error-format=pretty-json is unstable",
1931 if debugging_opts.pgo_gen.is_some() && !debugging_opts.pgo_use.is_empty() {
1934 "options `-Z pgo-gen` and `-Z pgo-use` are exclusive",
1938 let mut output_types = BTreeMap::new();
1939 if !debugging_opts.parse_only {
1940 for list in matches.opt_strs("emit") {
1941 for output_type in list.split(',') {
1942 let mut parts = output_type.splitn(2, '=');
1943 let shorthand = parts.next().unwrap();
1944 let output_type = OutputType::from_shorthand(shorthand).unwrap_or_else(||
1948 "unknown emission type: `{}` - expected one of: {}",
1950 OutputType::shorthands_display(),
1954 let path = parts.next().map(PathBuf::from);
1955 output_types.insert(output_type, path);
1959 if output_types.is_empty() {
1960 output_types.insert(OutputType::Exe, None);
1963 let mut cg = build_codegen_options(matches, error_format);
1964 let mut codegen_units = cg.codegen_units;
1965 let mut disable_thinlto = false;
1967 // Issue #30063: if user requests llvm-related output to one
1968 // particular path, disable codegen-units.
1969 let incompatible: Vec<_> = output_types
1971 .map(|ot_path| ot_path.0)
1972 .filter(|ot| !ot.is_compatible_with_codegen_units_and_single_output_file())
1973 .map(|ot| ot.shorthand())
1975 if !incompatible.is_empty() {
1976 match codegen_units {
1977 Some(n) if n > 1 => {
1978 if matches.opt_present("o") {
1979 for ot in &incompatible {
1983 "--emit={} with -o incompatible with \
1984 -C codegen-units=N for N > 1",
1989 early_warn(error_format, "resetting to default -C codegen-units=1");
1990 codegen_units = Some(1);
1991 disable_thinlto = true;
1995 codegen_units = Some(1);
1996 disable_thinlto = true;
2001 if debugging_opts.threads == Some(0) {
2004 "Value for threads must be a positive nonzero integer",
2008 if debugging_opts.threads.unwrap_or(1) > 1 && debugging_opts.fuel.is_some() {
2011 "Optimization fuel is incompatible with multiple threads",
2015 if codegen_units == Some(0) {
2018 "Value for codegen units must be a positive nonzero integer",
2022 let incremental = match (&debugging_opts.incremental, &cg.incremental) {
2023 (&Some(ref path1), &Some(ref path2)) => {
2028 "conflicting paths for `-Z incremental` and \
2029 `-C incremental` specified: {} versus {}",
2037 (&Some(ref path), &None) => Some(path),
2038 (&None, &Some(ref path)) => Some(path),
2039 (&None, &None) => None,
2040 }.map(|m| PathBuf::from(m));
2042 if debugging_opts.profile && incremental.is_some() {
2045 "can't instrument with gcov profiling when compiling incrementally",
2049 let mut prints = Vec::<PrintRequest>::new();
2050 if cg.target_cpu.as_ref().map_or(false, |s| s == "help") {
2051 prints.push(PrintRequest::TargetCPUs);
2052 cg.target_cpu = None;
2054 if cg.target_feature == "help" {
2055 prints.push(PrintRequest::TargetFeatures);
2056 cg.target_feature = String::new();
2058 if cg.relocation_model.as_ref().map_or(false, |s| s == "help") {
2059 prints.push(PrintRequest::RelocationModels);
2060 cg.relocation_model = None;
2062 if cg.code_model.as_ref().map_or(false, |s| s == "help") {
2063 prints.push(PrintRequest::CodeModels);
2064 cg.code_model = None;
2069 .map_or(false, |s| s == "help")
2071 prints.push(PrintRequest::TlsModels);
2072 debugging_opts.tls_model = None;
2077 let sysroot_opt = matches.opt_str("sysroot").map(|m| PathBuf::from(&m));
2078 let target_triple = if let Some(target) = matches.opt_str("target") {
2079 if target.ends_with(".json") {
2080 let path = Path::new(&target);
2081 TargetTriple::from_path(&path).unwrap_or_else(|_|
2082 early_error(error_format, &format!("target file {:?} does not exist", path)))
2084 TargetTriple::TargetTriple(target)
2087 TargetTriple::from_triple(host_triple())
2090 if matches.opt_present("O") {
2091 if cg.opt_level.is_some() {
2092 early_error(error_format, "-O and -C opt-level both provided");
2096 match cg.opt_level.as_ref().map(String::as_ref) {
2097 None => OptLevel::No,
2098 Some("0") => OptLevel::No,
2099 Some("1") => OptLevel::Less,
2100 Some("2") => OptLevel::Default,
2101 Some("3") => OptLevel::Aggressive,
2102 Some("s") => OptLevel::Size,
2103 Some("z") => OptLevel::SizeMin,
2108 "optimization level needs to be \
2109 between 0-3, s or z (instead was `{}`)",
2117 let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);
2118 let debuginfo = if matches.opt_present("g") {
2119 if cg.debuginfo.is_some() {
2120 early_error(error_format, "-g and -C debuginfo both provided");
2124 match cg.debuginfo {
2125 None | Some(0) => DebugInfo::None,
2126 Some(1) => DebugInfo::Limited,
2127 Some(2) => DebugInfo::Full,
2132 "debug info level needs to be between \
2133 0-2 (instead was `{}`)",
2141 let mut search_paths = vec![];
2142 for s in &matches.opt_strs("L") {
2143 search_paths.push(SearchPath::from_cli_opt(&s[..], error_format));
2150 // Parse string of the form "[KIND=]lib[:new_name]",
2151 // where KIND is one of "dylib", "framework", "static".
2152 let mut parts = s.splitn(2, '=');
2153 let kind = parts.next().unwrap();
2154 let (name, kind) = match (parts.next(), kind) {
2155 (None, name) => (name, None),
2156 (Some(name), "dylib") => (name, Some(cstore::NativeUnknown)),
2157 (Some(name), "framework") => (name, Some(cstore::NativeFramework)),
2158 (Some(name), "static") => (name, Some(cstore::NativeStatic)),
2159 (Some(name), "static-nobundle") => (name, Some(cstore::NativeStaticNobundle)),
2164 "unknown library kind `{}`, expected \
2165 one of dylib, framework, or static",
2171 if kind == Some(cstore::NativeStaticNobundle) && !nightly_options::is_nightly_build() {
2175 "the library kind 'static-nobundle' is only \
2176 accepted on the nightly compiler"
2180 let mut name_parts = name.splitn(2, ':');
2181 let name = name_parts.next().unwrap();
2182 let new_name = name_parts.next();
2183 (name.to_owned(), new_name.map(|n| n.to_owned()), kind)
2187 let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
2188 let test = matches.opt_present("test");
2190 let is_unstable_enabled = nightly_options::is_unstable_enabled(matches);
2192 prints.extend(matches.opt_strs("print").into_iter().map(|s| match &*s {
2193 "crate-name" => PrintRequest::CrateName,
2194 "file-names" => PrintRequest::FileNames,
2195 "sysroot" => PrintRequest::Sysroot,
2196 "cfg" => PrintRequest::Cfg,
2197 "target-list" => PrintRequest::TargetList,
2198 "target-cpus" => PrintRequest::TargetCPUs,
2199 "target-features" => PrintRequest::TargetFeatures,
2200 "relocation-models" => PrintRequest::RelocationModels,
2201 "code-models" => PrintRequest::CodeModels,
2202 "tls-models" => PrintRequest::TlsModels,
2203 "native-static-libs" => PrintRequest::NativeStaticLibs,
2204 "target-spec-json" => {
2205 if is_unstable_enabled {
2206 PrintRequest::TargetSpec
2210 "the `-Z unstable-options` flag must also be passed to \
2211 enable the target-spec-json print option",
2215 req => early_error(error_format, &format!("unknown print request `{}`", req)),
2218 let borrowck_mode = match debugging_opts.borrowck.as_ref().map(|s| &s[..]) {
2219 None | Some("ast") => BorrowckMode::Ast,
2220 Some("mir") => BorrowckMode::Mir,
2221 Some("compare") => BorrowckMode::Compare,
2222 Some("migrate") => BorrowckMode::Migrate,
2223 Some(m) => early_error(error_format, &format!("unknown borrowck mode `{}`", m)),
2226 if !cg.remark.is_empty() && debuginfo == DebugInfo::None {
2229 "-C remark requires \"-C debuginfo=n\" to show source locations",
2233 if matches.opt_present("extern-private") && !debugging_opts.unstable_options {
2235 ErrorOutputType::default(),
2236 "'--extern-private' is unstable and only \
2237 available for nightly builds of rustc."
2241 let extern_private = matches.opt_strs("extern-private");
2243 let mut externs: BTreeMap<_, BTreeSet<_>> = BTreeMap::new();
2244 for arg in matches.opt_strs("extern").into_iter().chain(matches.opt_strs("extern-private")) {
2245 let mut parts = arg.splitn(2, '=');
2246 let name = parts.next().unwrap_or_else(||
2247 early_error(error_format, "--extern value must not be empty"));
2248 let location = parts.next().map(|s| s.to_string());
2249 if location.is_none() && !is_unstable_enabled {
2252 "the `-Z unstable-options` flag must also be passed to \
2253 enable `--extern crate_name` without `=path`",
2258 .entry(name.to_owned())
2263 let crate_name = matches.opt_str("crate-name");
2265 let remap_path_prefix = matches
2266 .opt_strs("remap-path-prefix")
2269 let mut parts = remap.rsplitn(2, '='); // reverse iterator
2270 let to = parts.next();
2271 let from = parts.next();
2273 (Some(from), Some(to)) => (PathBuf::from(from), PathBuf::from(to)),
2276 "--remap-path-prefix must contain '=' between FROM and TO",
2285 optimize: opt_level,
2290 output_types: OutputTypes(output_types),
2292 maybe_sysroot: sysroot_opt,
2301 externs: Externs(externs),
2305 unstable_features: UnstableFeatures::from_environment(),
2307 actually_rustdoc: false,
2308 cli_forced_codegen_units: codegen_units,
2309 cli_forced_thinlto_off: disable_thinlto,
2318 pub fn parse_crate_types_from_list(list_list: Vec<String>) -> Result<Vec<CrateType>, String> {
2319 let mut crate_types: Vec<CrateType> = Vec::new();
2320 for unparsed_crate_type in &list_list {
2321 for part in unparsed_crate_type.split(',') {
2322 let new_part = match part {
2323 "lib" => default_lib_output(),
2324 "rlib" => CrateType::Rlib,
2325 "staticlib" => CrateType::Staticlib,
2326 "dylib" => CrateType::Dylib,
2327 "cdylib" => CrateType::Cdylib,
2328 "bin" => CrateType::Executable,
2329 "proc-macro" => CrateType::ProcMacro,
2330 _ => return Err(format!("unknown crate type: `{}`", part))
2332 if !crate_types.contains(&new_part) {
2333 crate_types.push(new_part)
2341 pub mod nightly_options {
2343 use syntax::feature_gate::UnstableFeatures;
2344 use super::{ErrorOutputType, OptionStability, RustcOptGroup};
2345 use session::early_error;
2347 pub fn is_unstable_enabled(matches: &getopts::Matches) -> bool {
2352 .any(|x| *x == "unstable-options")
2355 pub fn is_nightly_build() -> bool {
2356 UnstableFeatures::from_environment().is_nightly_build()
2359 pub fn check_nightly_options(matches: &getopts::Matches, flags: &[RustcOptGroup]) {
2360 let has_z_unstable_option = matches
2363 .any(|x| *x == "unstable-options");
2364 let really_allows_unstable_options =
2365 UnstableFeatures::from_environment().is_nightly_build();
2367 for opt in flags.iter() {
2368 if opt.stability == OptionStability::Stable {
2371 if !matches.opt_present(opt.name) {
2374 if opt.name != "Z" && !has_z_unstable_option {
2376 ErrorOutputType::default(),
2378 "the `-Z unstable-options` flag must also be passed to enable \
2384 if really_allows_unstable_options {
2387 match opt.stability {
2388 OptionStability::Unstable => {
2390 "the option `{}` is only accepted on the \
2394 early_error(ErrorOutputType::default(), &msg);
2396 OptionStability::Stable => {}
2402 impl fmt::Display for CrateType {
2403 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
2405 CrateType::Executable => "bin".fmt(f),
2406 CrateType::Dylib => "dylib".fmt(f),
2407 CrateType::Rlib => "rlib".fmt(f),
2408 CrateType::Staticlib => "staticlib".fmt(f),
2409 CrateType::Cdylib => "cdylib".fmt(f),
2410 CrateType::ProcMacro => "proc-macro".fmt(f),
2415 /// Command-line arguments passed to the compiler have to be incorporated with
2416 /// the dependency tracking system for incremental compilation. This module
2417 /// provides some utilities to make this more convenient.
2419 /// The values of all command-line arguments that are relevant for dependency
2420 /// tracking are hashed into a single value that determines whether the
2421 /// incremental compilation cache can be re-used or not. This hashing is done
2422 /// via the DepTrackingHash trait defined below, since the standard Hash
2423 /// implementation might not be suitable (e.g., arguments are stored in a Vec,
2424 /// the hash of which is order dependent, but we might not want the order of
2425 /// arguments to make a difference for the hash).
2427 /// However, since the value provided by Hash::hash often *is* suitable,
2428 /// especially for primitive types, there is the
2429 /// impl_dep_tracking_hash_via_hash!() macro that allows to simply reuse the
2430 /// Hash implementation for DepTrackingHash. It's important though that
2431 /// we have an opt-in scheme here, so one is hopefully forced to think about
2432 /// how the hash should be calculated when adding a new command-line argument.
2436 use std::collections::BTreeMap;
2437 use std::hash::Hash;
2438 use std::path::PathBuf;
2439 use std::collections::hash_map::DefaultHasher;
2440 use super::{CrateType, DebugInfo, ErrorOutputType, OptLevel, OutputTypes,
2441 Passes, Sanitizer, LtoCli, CrossLangLto};
2442 use syntax::feature_gate::UnstableFeatures;
2443 use rustc_target::spec::{MergeFunctions, PanicStrategy, RelroLevel, TargetTriple};
2444 use syntax::edition::Edition;
2446 pub trait DepTrackingHash {
2447 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType);
2450 macro_rules! impl_dep_tracking_hash_via_hash {
2452 impl DepTrackingHash for $t {
2453 fn hash(&self, hasher: &mut DefaultHasher, _: ErrorOutputType) {
2454 Hash::hash(self, hasher);
2460 macro_rules! impl_dep_tracking_hash_for_sortable_vec_of {
2462 impl DepTrackingHash for Vec<$t> {
2463 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2464 let mut elems: Vec<&$t> = self.iter().collect();
2466 Hash::hash(&elems.len(), hasher);
2467 for (index, elem) in elems.iter().enumerate() {
2468 Hash::hash(&index, hasher);
2469 DepTrackingHash::hash(*elem, hasher, error_format);
2476 impl_dep_tracking_hash_via_hash!(bool);
2477 impl_dep_tracking_hash_via_hash!(usize);
2478 impl_dep_tracking_hash_via_hash!(u64);
2479 impl_dep_tracking_hash_via_hash!(String);
2480 impl_dep_tracking_hash_via_hash!(PathBuf);
2481 impl_dep_tracking_hash_via_hash!(lint::Level);
2482 impl_dep_tracking_hash_via_hash!(Option<bool>);
2483 impl_dep_tracking_hash_via_hash!(Option<usize>);
2484 impl_dep_tracking_hash_via_hash!(Option<String>);
2485 impl_dep_tracking_hash_via_hash!(Option<(String, u64)>);
2486 impl_dep_tracking_hash_via_hash!(Option<Vec<String>>);
2487 impl_dep_tracking_hash_via_hash!(Option<MergeFunctions>);
2488 impl_dep_tracking_hash_via_hash!(Option<PanicStrategy>);
2489 impl_dep_tracking_hash_via_hash!(Option<RelroLevel>);
2490 impl_dep_tracking_hash_via_hash!(Option<lint::Level>);
2491 impl_dep_tracking_hash_via_hash!(Option<PathBuf>);
2492 impl_dep_tracking_hash_via_hash!(Option<cstore::NativeLibraryKind>);
2493 impl_dep_tracking_hash_via_hash!(CrateType);
2494 impl_dep_tracking_hash_via_hash!(MergeFunctions);
2495 impl_dep_tracking_hash_via_hash!(PanicStrategy);
2496 impl_dep_tracking_hash_via_hash!(RelroLevel);
2497 impl_dep_tracking_hash_via_hash!(Passes);
2498 impl_dep_tracking_hash_via_hash!(OptLevel);
2499 impl_dep_tracking_hash_via_hash!(LtoCli);
2500 impl_dep_tracking_hash_via_hash!(DebugInfo);
2501 impl_dep_tracking_hash_via_hash!(UnstableFeatures);
2502 impl_dep_tracking_hash_via_hash!(OutputTypes);
2503 impl_dep_tracking_hash_via_hash!(cstore::NativeLibraryKind);
2504 impl_dep_tracking_hash_via_hash!(Sanitizer);
2505 impl_dep_tracking_hash_via_hash!(Option<Sanitizer>);
2506 impl_dep_tracking_hash_via_hash!(TargetTriple);
2507 impl_dep_tracking_hash_via_hash!(Edition);
2508 impl_dep_tracking_hash_via_hash!(CrossLangLto);
2510 impl_dep_tracking_hash_for_sortable_vec_of!(String);
2511 impl_dep_tracking_hash_for_sortable_vec_of!(PathBuf);
2512 impl_dep_tracking_hash_for_sortable_vec_of!(CrateType);
2513 impl_dep_tracking_hash_for_sortable_vec_of!((String, lint::Level));
2514 impl_dep_tracking_hash_for_sortable_vec_of!((
2517 Option<cstore::NativeLibraryKind>
2519 impl_dep_tracking_hash_for_sortable_vec_of!((String, u64));
2521 impl<T1, T2> DepTrackingHash for (T1, T2)
2523 T1: DepTrackingHash,
2524 T2: DepTrackingHash,
2526 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2527 Hash::hash(&0, hasher);
2528 DepTrackingHash::hash(&self.0, hasher, error_format);
2529 Hash::hash(&1, hasher);
2530 DepTrackingHash::hash(&self.1, hasher, error_format);
2534 impl<T1, T2, T3> DepTrackingHash for (T1, T2, T3)
2536 T1: DepTrackingHash,
2537 T2: DepTrackingHash,
2538 T3: DepTrackingHash,
2540 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2541 Hash::hash(&0, hasher);
2542 DepTrackingHash::hash(&self.0, hasher, error_format);
2543 Hash::hash(&1, hasher);
2544 DepTrackingHash::hash(&self.1, hasher, error_format);
2545 Hash::hash(&2, hasher);
2546 DepTrackingHash::hash(&self.2, hasher, error_format);
2550 // This is a stable hash because BTreeMap is a sorted container
2552 sub_hashes: BTreeMap<&'static str, &dyn DepTrackingHash>,
2553 hasher: &mut DefaultHasher,
2554 error_format: ErrorOutputType,
2556 for (key, sub_hash) in sub_hashes {
2557 // Using Hash::hash() instead of DepTrackingHash::hash() is fine for
2558 // the keys, as they are just plain strings
2559 Hash::hash(&key.len(), hasher);
2560 Hash::hash(key, hasher);
2561 sub_hash.hash(hasher, error_format);
2572 use session::config::{build_configuration, build_session_options_and_crate_config};
2573 use session::config::{LtoCli, CrossLangLto};
2574 use session::build_session;
2575 use session::search_paths::SearchPath;
2576 use std::collections::{BTreeMap, BTreeSet};
2577 use std::iter::FromIterator;
2578 use std::path::PathBuf;
2579 use super::{Externs, OutputType, OutputTypes};
2580 use rustc_target::spec::{MergeFunctions, PanicStrategy, RelroLevel};
2581 use syntax::symbol::Symbol;
2582 use syntax::edition::{Edition, DEFAULT_EDITION};
2586 fn optgroups() -> getopts::Options {
2587 let mut opts = getopts::Options::new();
2588 for group in super::rustc_optgroups() {
2589 (group.apply)(&mut opts);
2594 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
2595 BTreeMap::from_iter(entries.into_iter())
2598 fn mk_set<V: Ord>(entries: Vec<V>) -> BTreeSet<V> {
2599 BTreeSet::from_iter(entries.into_iter())
2602 // When the user supplies --test we should implicitly supply --cfg test
2604 fn test_switch_implies_cfg_test() {
2605 syntax::with_globals(|| {
2606 let matches = &match optgroups().parse(&["--test".to_string()]) {
2608 Err(f) => panic!("test_switch_implies_cfg_test: {}", f),
2610 let registry = errors::registry::Registry::new(&[]);
2611 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2612 let sess = build_session(sessopts, None, registry);
2613 let cfg = build_configuration(&sess, cfg);
2614 assert!(cfg.contains(&(Symbol::intern("test"), None)));
2618 // When the user supplies --test and --cfg test, don't implicitly add
2619 // another --cfg test
2621 fn test_switch_implies_cfg_test_unless_cfg_test() {
2622 syntax::with_globals(|| {
2623 let matches = &match optgroups().parse(&["--test".to_string(),
2624 "--cfg=test".to_string()]) {
2626 Err(f) => panic!("test_switch_implies_cfg_test_unless_cfg_test: {}", f),
2628 let registry = errors::registry::Registry::new(&[]);
2629 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2630 let sess = build_session(sessopts, None, registry);
2631 let cfg = build_configuration(&sess, cfg);
2632 let mut test_items = cfg.iter().filter(|&&(name, _)| name == "test");
2633 assert!(test_items.next().is_some());
2634 assert!(test_items.next().is_none());
2639 fn test_can_print_warnings() {
2640 syntax::with_globals(|| {
2641 let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
2642 let registry = errors::registry::Registry::new(&[]);
2643 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2644 let sess = build_session(sessopts, None, registry);
2645 assert!(!sess.diagnostic().flags.can_emit_warnings);
2648 syntax::with_globals(|| {
2649 let matches = optgroups()
2650 .parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()])
2652 let registry = errors::registry::Registry::new(&[]);
2653 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2654 let sess = build_session(sessopts, None, registry);
2655 assert!(sess.diagnostic().flags.can_emit_warnings);
2658 syntax::with_globals(|| {
2659 let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
2660 let registry = errors::registry::Registry::new(&[]);
2661 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2662 let sess = build_session(sessopts, None, registry);
2663 assert!(sess.diagnostic().flags.can_emit_warnings);
2668 fn test_output_types_tracking_hash_different_paths() {
2669 let mut v1 = Options::default();
2670 let mut v2 = Options::default();
2671 let mut v3 = Options::default();
2674 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("./some/thing")))]);
2676 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("/some/thing")))]);
2677 v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
2679 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2680 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2681 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2684 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2685 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2686 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2690 fn test_output_types_tracking_hash_different_construction_order() {
2691 let mut v1 = Options::default();
2692 let mut v2 = Options::default();
2694 v1.output_types = OutputTypes::new(&[
2695 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2696 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2699 v2.output_types = OutputTypes::new(&[
2700 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2701 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2704 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2707 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2711 fn test_externs_tracking_hash_different_construction_order() {
2712 let mut v1 = Options::default();
2713 let mut v2 = Options::default();
2714 let mut v3 = Options::default();
2716 v1.externs = Externs::new(mk_map(vec![
2719 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2723 mk_set(vec![Some(String::from("e")), Some(String::from("f"))]),
2727 v2.externs = Externs::new(mk_map(vec![
2730 mk_set(vec![Some(String::from("e")), Some(String::from("f"))]),
2734 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2738 v3.externs = Externs::new(mk_map(vec![
2741 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2745 mk_set(vec![Some(String::from("f")), Some(String::from("e"))]),
2749 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2750 assert_eq!(v1.dep_tracking_hash(), v3.dep_tracking_hash());
2751 assert_eq!(v2.dep_tracking_hash(), v3.dep_tracking_hash());
2754 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2755 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2756 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2760 fn test_lints_tracking_hash_different_values() {
2761 let mut v1 = Options::default();
2762 let mut v2 = Options::default();
2763 let mut v3 = Options::default();
2765 v1.lint_opts = vec![
2766 (String::from("a"), lint::Allow),
2767 (String::from("b"), lint::Warn),
2768 (String::from("c"), lint::Deny),
2769 (String::from("d"), lint::Forbid),
2772 v2.lint_opts = vec![
2773 (String::from("a"), lint::Allow),
2774 (String::from("b"), lint::Warn),
2775 (String::from("X"), lint::Deny),
2776 (String::from("d"), lint::Forbid),
2779 v3.lint_opts = vec![
2780 (String::from("a"), lint::Allow),
2781 (String::from("b"), lint::Warn),
2782 (String::from("c"), lint::Forbid),
2783 (String::from("d"), lint::Deny),
2786 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2787 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2788 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2791 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2792 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2793 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2797 fn test_lints_tracking_hash_different_construction_order() {
2798 let mut v1 = Options::default();
2799 let mut v2 = Options::default();
2801 v1.lint_opts = vec![
2802 (String::from("a"), lint::Allow),
2803 (String::from("b"), lint::Warn),
2804 (String::from("c"), lint::Deny),
2805 (String::from("d"), lint::Forbid),
2808 v2.lint_opts = vec![
2809 (String::from("a"), lint::Allow),
2810 (String::from("c"), lint::Deny),
2811 (String::from("b"), lint::Warn),
2812 (String::from("d"), lint::Forbid),
2815 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2818 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2819 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2823 fn test_search_paths_tracking_hash_different_order() {
2824 let mut v1 = Options::default();
2825 let mut v2 = Options::default();
2826 let mut v3 = Options::default();
2827 let mut v4 = Options::default();
2831 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2833 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2835 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2837 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2839 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2842 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2844 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2846 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2848 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2850 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2853 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2855 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2857 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2859 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2861 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2864 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2866 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2868 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2870 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2872 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2874 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2875 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2876 assert!(v1.dep_tracking_hash() == v4.dep_tracking_hash());
2879 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2880 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2881 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2882 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2886 fn test_native_libs_tracking_hash_different_values() {
2887 let mut v1 = Options::default();
2888 let mut v2 = Options::default();
2889 let mut v3 = Options::default();
2890 let mut v4 = Options::default();
2894 (String::from("a"), None, Some(cstore::NativeStatic)),
2895 (String::from("b"), None, Some(cstore::NativeFramework)),
2896 (String::from("c"), None, Some(cstore::NativeUnknown)),
2901 (String::from("a"), None, Some(cstore::NativeStatic)),
2902 (String::from("X"), None, Some(cstore::NativeFramework)),
2903 (String::from("c"), None, Some(cstore::NativeUnknown)),
2908 (String::from("a"), None, Some(cstore::NativeStatic)),
2909 (String::from("b"), None, Some(cstore::NativeStatic)),
2910 (String::from("c"), None, Some(cstore::NativeUnknown)),
2915 (String::from("a"), None, Some(cstore::NativeStatic)),
2918 Some(String::from("X")),
2919 Some(cstore::NativeFramework),
2921 (String::from("c"), None, Some(cstore::NativeUnknown)),
2924 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2925 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2926 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
2929 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2930 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2931 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2932 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2936 fn test_native_libs_tracking_hash_different_order() {
2937 let mut v1 = Options::default();
2938 let mut v2 = Options::default();
2939 let mut v3 = Options::default();
2943 (String::from("a"), None, Some(cstore::NativeStatic)),
2944 (String::from("b"), None, Some(cstore::NativeFramework)),
2945 (String::from("c"), None, Some(cstore::NativeUnknown)),
2949 (String::from("b"), None, Some(cstore::NativeFramework)),
2950 (String::from("a"), None, Some(cstore::NativeStatic)),
2951 (String::from("c"), None, Some(cstore::NativeUnknown)),
2955 (String::from("c"), None, Some(cstore::NativeUnknown)),
2956 (String::from("a"), None, Some(cstore::NativeStatic)),
2957 (String::from("b"), None, Some(cstore::NativeFramework)),
2960 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2961 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2962 assert!(v2.dep_tracking_hash() == v3.dep_tracking_hash());
2965 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2966 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2967 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2971 fn test_codegen_options_tracking_hash() {
2972 let reference = Options::default();
2973 let mut opts = Options::default();
2975 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
2976 opts.cg.ar = Some(String::from("abc"));
2977 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2979 opts.cg.linker = Some(PathBuf::from("linker"));
2980 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2982 opts.cg.link_args = Some(vec![String::from("abc"), String::from("def")]);
2983 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2985 opts.cg.link_dead_code = true;
2986 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2988 opts.cg.rpath = true;
2989 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2991 opts.cg.extra_filename = String::from("extra-filename");
2992 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2994 opts.cg.codegen_units = Some(42);
2995 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2997 opts.cg.remark = super::Passes::Some(vec![String::from("pass1"), String::from("pass2")]);
2998 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3000 opts.cg.save_temps = true;
3001 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3003 opts.cg.incremental = Some(String::from("abc"));
3004 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3006 // Make sure changing a [TRACKED] option changes the hash
3007 opts = reference.clone();
3008 opts.cg.lto = LtoCli::Fat;
3009 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3011 opts = reference.clone();
3012 opts.cg.target_cpu = Some(String::from("abc"));
3013 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3015 opts = reference.clone();
3016 opts.cg.target_feature = String::from("all the features, all of them");
3017 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3019 opts = reference.clone();
3020 opts.cg.passes = vec![String::from("1"), String::from("2")];
3021 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3023 opts = reference.clone();
3024 opts.cg.llvm_args = vec![String::from("1"), String::from("2")];
3025 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3027 opts = reference.clone();
3028 opts.cg.overflow_checks = Some(true);
3029 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3031 opts = reference.clone();
3032 opts.cg.no_prepopulate_passes = true;
3033 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3035 opts = reference.clone();
3036 opts.cg.no_vectorize_loops = true;
3037 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3039 opts = reference.clone();
3040 opts.cg.no_vectorize_slp = true;
3041 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3043 opts = reference.clone();
3044 opts.cg.soft_float = true;
3045 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3047 opts = reference.clone();
3048 opts.cg.prefer_dynamic = true;
3049 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3051 opts = reference.clone();
3052 opts.cg.no_integrated_as = true;
3053 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3055 opts = reference.clone();
3056 opts.cg.no_redzone = Some(true);
3057 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3059 opts = reference.clone();
3060 opts.cg.relocation_model = Some(String::from("relocation model"));
3061 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3063 opts = reference.clone();
3064 opts.cg.code_model = Some(String::from("code model"));
3065 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3067 opts = reference.clone();
3068 opts.debugging_opts.tls_model = Some(String::from("tls model"));
3069 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3071 opts = reference.clone();
3072 opts.debugging_opts.pgo_gen = Some(String::from("abc"));
3073 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3075 opts = reference.clone();
3076 opts.debugging_opts.pgo_use = String::from("abc");
3077 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3079 opts = reference.clone();
3080 opts.cg.metadata = vec![String::from("A"), String::from("B")];
3081 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3083 opts = reference.clone();
3084 opts.cg.debuginfo = Some(0xdeadbeef);
3085 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3087 opts = reference.clone();
3088 opts.cg.debuginfo = Some(0xba5eba11);
3089 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3091 opts = reference.clone();
3092 opts.cg.force_frame_pointers = Some(false);
3093 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3095 opts = reference.clone();
3096 opts.cg.debug_assertions = Some(true);
3097 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3099 opts = reference.clone();
3100 opts.cg.inline_threshold = Some(0xf007ba11);
3101 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3103 opts = reference.clone();
3104 opts.cg.panic = Some(PanicStrategy::Abort);
3105 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3109 fn test_debugging_options_tracking_hash() {
3110 let reference = Options::default();
3111 let mut opts = Options::default();
3113 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
3114 opts.debugging_opts.verbose = true;
3115 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3116 opts.debugging_opts.time_passes = true;
3117 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3118 opts.debugging_opts.count_llvm_insns = true;
3119 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3120 opts.debugging_opts.time_llvm_passes = true;
3121 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3122 opts.debugging_opts.input_stats = true;
3123 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3124 opts.debugging_opts.codegen_stats = true;
3125 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3126 opts.debugging_opts.borrowck_stats = true;
3127 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3128 opts.debugging_opts.meta_stats = true;
3129 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3130 opts.debugging_opts.print_link_args = true;
3131 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3132 opts.debugging_opts.print_llvm_passes = true;
3133 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3134 opts.debugging_opts.ast_json = true;
3135 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3136 opts.debugging_opts.ast_json_noexpand = true;
3137 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3138 opts.debugging_opts.ls = true;
3139 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3140 opts.debugging_opts.save_analysis = true;
3141 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3142 opts.debugging_opts.flowgraph_print_loans = true;
3143 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3144 opts.debugging_opts.flowgraph_print_moves = true;
3145 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3146 opts.debugging_opts.flowgraph_print_assigns = true;
3147 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3148 opts.debugging_opts.flowgraph_print_all = true;
3149 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3150 opts.debugging_opts.print_region_graph = true;
3151 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3152 opts.debugging_opts.parse_only = true;
3153 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3154 opts.debugging_opts.incremental = Some(String::from("abc"));
3155 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3156 opts.debugging_opts.dump_dep_graph = true;
3157 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3158 opts.debugging_opts.query_dep_graph = true;
3159 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3160 opts.debugging_opts.no_analysis = true;
3161 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3162 opts.debugging_opts.unstable_options = true;
3163 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3164 opts.debugging_opts.trace_macros = true;
3165 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3166 opts.debugging_opts.keep_hygiene_data = true;
3167 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3168 opts.debugging_opts.keep_ast = true;
3169 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3170 opts.debugging_opts.print_mono_items = Some(String::from("abc"));
3171 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3172 opts.debugging_opts.dump_mir = Some(String::from("abc"));
3173 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3174 opts.debugging_opts.dump_mir_dir = String::from("abc");
3175 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3176 opts.debugging_opts.dump_mir_graphviz = true;
3177 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3179 // Make sure changing a [TRACKED] option changes the hash
3180 opts = reference.clone();
3181 opts.debugging_opts.asm_comments = true;
3182 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3184 opts = reference.clone();
3185 opts.debugging_opts.verify_llvm_ir = true;
3186 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3188 opts = reference.clone();
3189 opts.debugging_opts.no_landing_pads = true;
3190 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3192 opts = reference.clone();
3193 opts.debugging_opts.fewer_names = true;
3194 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3196 opts = reference.clone();
3197 opts.debugging_opts.no_codegen = true;
3198 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3200 opts = reference.clone();
3201 opts.debugging_opts.treat_err_as_bug = true;
3202 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3204 opts = reference.clone();
3205 opts.debugging_opts.report_delayed_bugs = true;
3206 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3208 opts = reference.clone();
3209 opts.debugging_opts.continue_parse_after_error = true;
3210 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3212 opts = reference.clone();
3213 opts.debugging_opts.extra_plugins = vec![String::from("plugin1"), String::from("plugin2")];
3214 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3216 opts = reference.clone();
3217 opts.debugging_opts.force_overflow_checks = Some(true);
3218 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3220 opts = reference.clone();
3221 opts.debugging_opts.show_span = Some(String::from("abc"));
3222 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3224 opts = reference.clone();
3225 opts.debugging_opts.mir_opt_level = 3;
3226 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3228 opts = reference.clone();
3229 opts.debugging_opts.relro_level = Some(RelroLevel::Full);
3230 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3232 opts = reference.clone();
3233 opts.debugging_opts.cross_lang_lto = CrossLangLto::LinkerPluginAuto;
3234 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3236 opts = reference.clone();
3237 opts.debugging_opts.merge_functions = Some(MergeFunctions::Disabled);
3238 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3242 fn test_edition_parsing() {
3243 // test default edition
3244 let options = Options::default();
3245 assert!(options.edition == DEFAULT_EDITION);
3247 let matches = optgroups()
3248 .parse(&["--edition=2018".to_string()])
3250 let (sessopts, _) = build_session_options_and_crate_config(&matches);
3251 assert!(sessopts.edition == Edition::Edition2018)