1 //! Contains infrastructure for configuring the compiler, including parsing
2 //! command line options.
6 use crate::session::{early_error, early_warn, Session};
7 use crate::session::search_paths::SearchPath;
9 use rustc_target::spec::{LinkerFlavor, MergeFunctions, PanicStrategy, RelroLevel};
10 use rustc_target::spec::{Target, TargetTriple};
12 use crate::middle::cstore;
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 crate::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 /// Loads 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 /// Gets 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 noopt-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 /// Returns `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 /// Returns `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 unleash_the_miri_inside_of_you: bool = (false, parse_bool, [TRACKED],
1309 "take the breaks off const evaluation. NOTE: this is unsound"),
1310 osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
1311 "pass `-install_name @rpath/...` to the macOS linker"),
1312 sanitizer: Option<Sanitizer> = (None, parse_sanitizer, [TRACKED],
1314 fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
1315 "set the optimization fuel quota for a crate"),
1316 print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
1317 "make Rustc print the total optimization fuel used by a crate"),
1318 force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
1319 "force all crates to be `rustc_private` unstable"),
1320 pre_link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1321 "a single extra argument to prepend the linker invocation (can be used several times)"),
1322 pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1323 "extra arguments to prepend to the linker invocation (space separated)"),
1324 profile: bool = (false, parse_bool, [TRACKED],
1325 "insert profiling code"),
1326 pgo_gen: Option<String> = (None, parse_opt_string, [TRACKED],
1327 "Generate PGO profile data, to a given file, or to the default location if it's empty."),
1328 pgo_use: String = (String::new(), parse_string, [TRACKED],
1329 "Use PGO profile data from the given profile file."),
1330 disable_instrumentation_preinliner: bool = (false, parse_bool, [TRACKED],
1331 "Disable the instrumentation pre-inliner, useful for profiling / PGO."),
1332 relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
1333 "choose which RELRO level to use"),
1334 nll_facts: bool = (false, parse_bool, [UNTRACKED],
1335 "dump facts from NLL analysis into side files"),
1336 nll_dont_emit_read_for_match: bool = (false, parse_bool, [UNTRACKED],
1337 "in match codegen, do not include FakeRead statements (used by mir-borrowck)"),
1338 dont_buffer_diagnostics: bool = (false, parse_bool, [UNTRACKED],
1339 "emit diagnostics rather than buffering (breaks NLL error downgrading, sorting)."),
1340 polonius: bool = (false, parse_bool, [UNTRACKED],
1341 "enable polonius-based borrow-checker"),
1342 codegen_time_graph: bool = (false, parse_bool, [UNTRACKED],
1343 "generate a graphical HTML report of time spent in codegen and LLVM"),
1344 thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
1345 "enable ThinLTO when possible"),
1346 inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
1347 "control whether #[inline] functions are in all cgus"),
1348 tls_model: Option<String> = (None, parse_opt_string, [TRACKED],
1349 "choose the TLS model to use (rustc --print tls-models for details)"),
1350 saturating_float_casts: bool = (false, parse_bool, [TRACKED],
1351 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1352 the max/min integer respectively, and NaN is mapped to 0"),
1353 lower_128bit_ops: Option<bool> = (None, parse_opt_bool, [TRACKED],
1354 "rewrite operators on i128 and u128 into lang item calls (typically provided \
1355 by compiler-builtins) so codegen doesn't need to support them,
1356 overriding the default for the current target"),
1357 human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
1358 "generate human-readable, predictable names for codegen units"),
1359 dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
1360 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
1362 unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
1363 "Present the input source, unstable (and less-pretty) variants;
1364 valid types are any of the types for `--pretty`, as well as:
1365 `expanded`, `expanded,identified`,
1366 `expanded,hygiene` (with internal representations),
1367 `flowgraph=<nodeid>` (graphviz formatted flowgraph for node),
1368 `flowgraph,unlabelled=<nodeid>` (unlabelled graphviz formatted flowgraph for node),
1369 `everybody_loops` (all function bodies replaced with `loop {}`),
1370 `hir` (the HIR), `hir,identified`,
1371 `hir,typed` (HIR with types for each node),
1372 `hir-tree` (dump the raw HIR),
1373 `mir` (the MIR), or `mir-cfg` (graphviz formatted MIR)"),
1374 run_dsymutil: Option<bool> = (None, parse_opt_bool, [TRACKED],
1375 "run `dsymutil` and delete intermediate object files"),
1376 ui_testing: bool = (false, parse_bool, [UNTRACKED],
1377 "format compiler diagnostics in a way that's better suitable for UI testing"),
1378 embed_bitcode: bool = (false, parse_bool, [TRACKED],
1379 "embed LLVM bitcode in object files"),
1380 strip_debuginfo_if_disabled: Option<bool> = (None, parse_opt_bool, [TRACKED],
1381 "tell the linker to strip debuginfo when building without debuginfo enabled."),
1382 share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
1383 "make the current crate share its generic instantiations"),
1384 chalk: bool = (false, parse_bool, [TRACKED],
1385 "enable the experimental Chalk-based trait solving engine"),
1386 cross_lang_lto: CrossLangLto = (CrossLangLto::Disabled, parse_cross_lang_lto, [TRACKED],
1387 "generate build artifacts that are compatible with linker-based LTO."),
1388 no_parallel_llvm: bool = (false, parse_bool, [UNTRACKED],
1389 "don't run LLVM in parallel (while keeping codegen-units and ThinLTO)"),
1390 no_leak_check: bool = (false, parse_bool, [UNTRACKED],
1391 "disables the 'leak check' for subtyping; unsound, but useful for tests"),
1392 no_interleave_lints: bool = (false, parse_bool, [UNTRACKED],
1393 "don't interleave execution of lints; allows benchmarking individual lints"),
1394 crate_attr: Vec<String> = (Vec::new(), parse_string_push, [TRACKED],
1395 "inject the given attribute in the crate"),
1396 self_profile: bool = (false, parse_bool, [UNTRACKED],
1397 "run the self profiler"),
1398 profile_json: bool = (false, parse_bool, [UNTRACKED],
1399 "output a json file with profiler results"),
1400 emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
1401 "emits a section containing stack size metadata"),
1402 plt: Option<bool> = (None, parse_opt_bool, [TRACKED],
1403 "whether to use the PLT when calling into shared libraries;
1404 only has effect for PIC code on systems with ELF binaries
1405 (default: PLT is disabled if full relro is enabled)"),
1406 merge_functions: Option<MergeFunctions> = (None, parse_merge_functions, [TRACKED],
1407 "control the operation of the MergeFunctions LLVM pass, taking
1408 the same values as the target option of the same name"),
1411 pub fn default_lib_output() -> CrateType {
1415 pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
1416 let end = &sess.target.target.target_endian;
1417 let arch = &sess.target.target.arch;
1418 let wordsz = &sess.target.target.target_pointer_width;
1419 let os = &sess.target.target.target_os;
1420 let env = &sess.target.target.target_env;
1421 let vendor = &sess.target.target.target_vendor;
1422 let min_atomic_width = sess.target.target.min_atomic_width();
1423 let max_atomic_width = sess.target.target.max_atomic_width();
1424 let atomic_cas = sess.target.target.options.atomic_cas;
1426 let mut ret = FxHashSet::default();
1427 ret.reserve(6); // the minimum number of insertions
1429 ret.insert((Symbol::intern("target_os"), Some(Symbol::intern(os))));
1430 if let Some(ref fam) = sess.target.target.options.target_family {
1431 ret.insert((Symbol::intern("target_family"), Some(Symbol::intern(fam))));
1432 if fam == "windows" || fam == "unix" {
1433 ret.insert((Symbol::intern(fam), None));
1436 ret.insert((Symbol::intern("target_arch"), Some(Symbol::intern(arch))));
1437 ret.insert((Symbol::intern("target_endian"), Some(Symbol::intern(end))));
1439 Symbol::intern("target_pointer_width"),
1440 Some(Symbol::intern(wordsz)),
1442 ret.insert((Symbol::intern("target_env"), Some(Symbol::intern(env))));
1444 Symbol::intern("target_vendor"),
1445 Some(Symbol::intern(vendor)),
1447 if sess.target.target.options.has_elf_tls {
1448 ret.insert((Symbol::intern("target_thread_local"), None));
1450 for &i in &[8, 16, 32, 64, 128] {
1451 if i >= min_atomic_width && i <= max_atomic_width {
1452 let s = i.to_string();
1454 Symbol::intern("target_has_atomic"),
1455 Some(Symbol::intern(&s)),
1459 Symbol::intern("target_has_atomic"),
1460 Some(Symbol::intern("ptr")),
1466 ret.insert((Symbol::intern("target_has_atomic"), Some(Symbol::intern("cas"))));
1468 if sess.opts.debug_assertions {
1469 ret.insert((Symbol::intern("debug_assertions"), None));
1471 if sess.opts.crate_types.contains(&CrateType::ProcMacro) {
1472 ret.insert((Symbol::intern("proc_macro"), None));
1477 pub fn build_configuration(sess: &Session, mut user_cfg: ast::CrateConfig) -> ast::CrateConfig {
1478 // Combine the configuration requested by the session (command line) with
1479 // some default and generated configuration items
1480 let default_cfg = default_configuration(sess);
1481 // If the user wants a test runner, then add the test cfg
1483 user_cfg.insert((Symbol::intern("test"), None));
1485 user_cfg.extend(default_cfg.iter().cloned());
1489 pub fn build_target_config(opts: &Options, sp: &Handler) -> Config {
1490 let target = Target::search(&opts.target_triple).unwrap_or_else(|e| {
1491 sp.struct_fatal(&format!("Error loading target specification: {}", e))
1492 .help("Use `--print target-list` for a list of built-in targets")
1497 let (isize_ty, usize_ty) = match &target.target_pointer_width[..] {
1498 "16" => (ast::IntTy::I16, ast::UintTy::U16),
1499 "32" => (ast::IntTy::I32, ast::UintTy::U32),
1500 "64" => (ast::IntTy::I64, ast::UintTy::U64),
1501 w => sp.fatal(&format!(
1502 "target specification was invalid: \
1503 unrecognized target-pointer-width {}",
1515 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
1516 pub enum OptionStability {
1521 pub struct RustcOptGroup {
1522 pub apply: Box<dyn Fn(&mut getopts::Options) -> &mut getopts::Options>,
1523 pub name: &'static str,
1524 pub stability: OptionStability,
1527 impl RustcOptGroup {
1528 pub fn is_stable(&self) -> bool {
1529 self.stability == OptionStability::Stable
1532 pub fn stable<F>(name: &'static str, f: F) -> RustcOptGroup
1534 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1539 stability: OptionStability::Stable,
1543 pub fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup
1545 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1550 stability: OptionStability::Unstable,
1555 // The `opt` local module holds wrappers around the `getopts` API that
1556 // adds extra rustc-specific metadata to each option; such metadata
1557 // is exposed by . The public
1558 // functions below ending with `_u` are the functions that return
1559 // *unstable* options, i.e., options that are only enabled when the
1560 // user also passes the `-Z unstable-options` debugging flag.
1562 // The `fn opt_u` etc below are written so that we can use them
1563 // in the future; do not warn about them not being used right now.
1564 #![allow(dead_code)]
1567 use super::RustcOptGroup;
1569 pub type R = RustcOptGroup;
1570 pub type S = &'static str;
1572 fn stable<F>(name: S, f: F) -> R
1574 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1576 RustcOptGroup::stable(name, f)
1579 fn unstable<F>(name: S, f: F) -> R
1581 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1583 RustcOptGroup::unstable(name, f)
1586 fn longer(a: S, b: S) -> S {
1587 if a.len() > b.len() {
1594 pub fn opt_s(a: S, b: S, c: S, d: S) -> R {
1595 stable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1597 pub fn multi_s(a: S, b: S, c: S, d: S) -> R {
1598 stable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1600 pub fn flag_s(a: S, b: S, c: S) -> R {
1601 stable(longer(a, b), move |opts| opts.optflag(a, b, c))
1603 pub fn flagopt_s(a: S, b: S, c: S, d: S) -> R {
1604 stable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1606 pub fn flagmulti_s(a: S, b: S, c: S) -> R {
1607 stable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1610 pub fn opt(a: S, b: S, c: S, d: S) -> R {
1611 unstable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1613 pub fn multi(a: S, b: S, c: S, d: S) -> R {
1614 unstable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1616 pub fn flag(a: S, b: S, c: S) -> R {
1617 unstable(longer(a, b), move |opts| opts.optflag(a, b, c))
1619 pub fn flagopt(a: S, b: S, c: S, d: S) -> R {
1620 unstable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1622 pub fn flagmulti(a: S, b: S, c: S) -> R {
1623 unstable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1627 /// Returns the "short" subset of the rustc command line options,
1628 /// including metadata for each option, such as whether the option is
1629 /// part of the stable long-term interface for rustc.
1630 pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
1632 opt::flag_s("h", "help", "Display this message"),
1633 opt::multi_s("", "cfg", "Configure the compilation environment", "SPEC"),
1637 "Add a directory to the library search path. The
1638 optional KIND can be one of dependency, crate, native,
1639 framework or all (the default).",
1645 "Link the generated crate(s) to the specified native
1646 library NAME. The optional KIND can be one of
1647 static, dylib, or framework. If omitted, dylib is
1654 "Comma separated list of types of crates
1655 for the compiler to emit",
1656 "[bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]",
1661 "Specify the name of the crate being built",
1667 "Comma separated list of types of output for \
1668 the compiler to emit",
1669 "[asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]",
1674 "Comma separated list of compiler information to \
1676 "[crate-name|file-names|sysroot|cfg|target-list|\
1677 target-cpus|target-features|relocation-models|\
1678 code-models|tls-models|target-spec-json|native-static-libs]",
1680 opt::flagmulti_s("g", "", "Equivalent to -C debuginfo=2"),
1681 opt::flagmulti_s("O", "", "Equivalent to -C opt-level=2"),
1682 opt::opt_s("o", "", "Write output to <filename>", "FILENAME"),
1686 "Write output to compiler-chosen filename \
1693 "Provide a detailed explanation of an error \
1697 opt::flag_s("", "test", "Build a test harness"),
1701 "Target triple for which the code is compiled",
1704 opt::multi_s("W", "warn", "Set lint warnings", "OPT"),
1705 opt::multi_s("A", "allow", "Set lint allowed", "OPT"),
1706 opt::multi_s("D", "deny", "Set lint denied", "OPT"),
1707 opt::multi_s("F", "forbid", "Set lint forbidden", "OPT"),
1711 "Set the most restrictive lint level. \
1712 More restrictive lints are capped at this \
1716 opt::multi_s("C", "codegen", "Set a codegen option", "OPT[=VALUE]"),
1717 opt::flag_s("V", "version", "Print version info and exit"),
1718 opt::flag_s("v", "verbose", "Use verbose output"),
1722 /// Returns all rustc command line options, including metadata for
1723 /// each option, such as whether the option is part of the stable
1724 /// long-term interface for rustc.
1725 pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
1726 let mut opts = rustc_short_optgroups();
1731 "Specify where an external rust library is located",
1737 "Specify where an extern rust library is located, marking it as a private dependency",
1740 opt::opt_s("", "sysroot", "Override the system root", "PATH"),
1741 opt::multi("Z", "", "Set internal debugging options", "FLAG"),
1745 "How errors and other messages are produced",
1751 "Configure coloring of output:
1752 auto = colorize, if output goes to a tty (default);
1753 always = always colorize output;
1754 never = never colorize output",
1755 "auto|always|never",
1760 "Pretty-print the input instead of compiling;
1761 valid types are: `normal` (un-annotated source),
1762 `expanded` (crates expanded), or
1763 `expanded,identified` (fully parenthesized, AST nodes with IDs).",
1769 "Specify which edition of the compiler to use when compiling code.",
1774 "remap-path-prefix",
1775 "Remap source names in all output (compiler messages and output files)",
1782 // Convert strings provided as --cfg [cfgspec] into a crate_cfg
1783 pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> ast::CrateConfig {
1787 let sess = parse::ParseSess::new(FilePathMapping::empty());
1788 let filename = FileName::cfg_spec_source_code(&s);
1789 let mut parser = parse::new_parser_from_source_str(&sess, filename, s.to_string());
1791 macro_rules! error {($reason: expr) => {
1792 early_error(ErrorOutputType::default(),
1793 &format!(concat!("invalid `--cfg` argument: `{}` (", $reason, ")"), s));
1796 match &mut parser.parse_meta_item() {
1797 Ok(meta_item) if parser.token == token::Eof => {
1798 if meta_item.ident.segments.len() != 1 {
1799 error!("argument key must be an identifier");
1801 match &meta_item.node {
1802 MetaItemKind::List(..) => {
1803 error!(r#"expected `key` or `key="value"`"#);
1805 MetaItemKind::NameValue(lit) if !lit.node.is_str() => {
1806 error!("argument value must be a string");
1808 MetaItemKind::NameValue(..) | MetaItemKind::Word => {
1809 return (meta_item.name(), meta_item.value_str());
1814 Err(err) => err.cancel(),
1817 error!(r#"expected `key` or `key="value"`"#);
1819 .collect::<ast::CrateConfig>()
1822 pub fn get_cmd_lint_options(matches: &getopts::Matches,
1823 error_format: ErrorOutputType)
1824 -> (Vec<(String, lint::Level)>, bool, Option<lint::Level>) {
1825 let mut lint_opts = vec![];
1826 let mut describe_lints = false;
1828 for &level in &[lint::Allow, lint::Warn, lint::Deny, lint::Forbid] {
1829 for lint_name in matches.opt_strs(level.as_str()) {
1830 if lint_name == "help" {
1831 describe_lints = true;
1833 lint_opts.push((lint_name.replace("-", "_"), level));
1838 let lint_cap = matches.opt_str("cap-lints").map(|cap| {
1839 lint::Level::from_str(&cap)
1840 .unwrap_or_else(|| early_error(error_format, &format!("unknown lint level: `{}`", cap)))
1842 (lint_opts, describe_lints, lint_cap)
1845 pub fn build_session_options_and_crate_config(
1846 matches: &getopts::Matches,
1847 ) -> (Options, ast::CrateConfig) {
1848 let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
1849 Some("auto") => ColorConfig::Auto,
1850 Some("always") => ColorConfig::Always,
1851 Some("never") => ColorConfig::Never,
1853 None => ColorConfig::Auto,
1855 Some(arg) => early_error(
1856 ErrorOutputType::default(),
1858 "argument for --color must be auto, \
1859 always or never (instead was `{}`)",
1865 let edition = match matches.opt_str("edition") {
1866 Some(arg) => Edition::from_str(&arg).unwrap_or_else(|_|
1868 ErrorOutputType::default(),
1870 "argument for --edition must be one of: \
1871 {}. (instead was `{}`)",
1877 None => DEFAULT_EDITION,
1880 if !edition.is_stable() && !nightly_options::is_nightly_build() {
1882 ErrorOutputType::default(),
1884 "Edition {} is unstable and only \
1885 available for nightly builds of rustc.",
1892 // We need the opts_present check because the driver will send us Matches
1893 // with only stable options if no unstable options are used. Since error-format
1894 // is unstable, it will not be present. We have to use opts_present not
1895 // opt_present because the latter will panic.
1896 let error_format = if matches.opts_present(&["error-format".to_owned()]) {
1897 match matches.opt_str("error-format").as_ref().map(|s| &s[..]) {
1898 Some("human") => ErrorOutputType::HumanReadable(color),
1899 Some("json") => ErrorOutputType::Json(false),
1900 Some("pretty-json") => ErrorOutputType::Json(true),
1901 Some("short") => ErrorOutputType::Short(color),
1902 None => ErrorOutputType::HumanReadable(color),
1904 Some(arg) => early_error(
1905 ErrorOutputType::HumanReadable(color),
1907 "argument for --error-format must be `human`, `json` or \
1908 `short` (instead was `{}`)",
1914 ErrorOutputType::HumanReadable(color)
1917 let unparsed_crate_types = matches.opt_strs("crate-type");
1918 let crate_types = parse_crate_types_from_list(unparsed_crate_types)
1919 .unwrap_or_else(|e| early_error(error_format, &e[..]));
1922 let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
1924 let mut debugging_opts = build_debugging_options(matches, error_format);
1926 if !debugging_opts.unstable_options && error_format == ErrorOutputType::Json(true) {
1928 ErrorOutputType::Json(false),
1929 "--error-format=pretty-json is unstable",
1933 if debugging_opts.pgo_gen.is_some() && !debugging_opts.pgo_use.is_empty() {
1936 "options `-Z pgo-gen` and `-Z pgo-use` are exclusive",
1940 let mut output_types = BTreeMap::new();
1941 if !debugging_opts.parse_only {
1942 for list in matches.opt_strs("emit") {
1943 for output_type in list.split(',') {
1944 let mut parts = output_type.splitn(2, '=');
1945 let shorthand = parts.next().unwrap();
1946 let output_type = OutputType::from_shorthand(shorthand).unwrap_or_else(||
1950 "unknown emission type: `{}` - expected one of: {}",
1952 OutputType::shorthands_display(),
1956 let path = parts.next().map(PathBuf::from);
1957 output_types.insert(output_type, path);
1961 if output_types.is_empty() {
1962 output_types.insert(OutputType::Exe, None);
1965 let mut cg = build_codegen_options(matches, error_format);
1966 let mut codegen_units = cg.codegen_units;
1967 let mut disable_thinlto = false;
1969 // Issue #30063: if user requests llvm-related output to one
1970 // particular path, disable codegen-units.
1971 let incompatible: Vec<_> = output_types
1973 .map(|ot_path| ot_path.0)
1974 .filter(|ot| !ot.is_compatible_with_codegen_units_and_single_output_file())
1975 .map(|ot| ot.shorthand())
1977 if !incompatible.is_empty() {
1978 match codegen_units {
1979 Some(n) if n > 1 => {
1980 if matches.opt_present("o") {
1981 for ot in &incompatible {
1985 "--emit={} with -o incompatible with \
1986 -C codegen-units=N for N > 1",
1991 early_warn(error_format, "resetting to default -C codegen-units=1");
1992 codegen_units = Some(1);
1993 disable_thinlto = true;
1997 codegen_units = Some(1);
1998 disable_thinlto = true;
2003 if debugging_opts.threads == Some(0) {
2006 "Value for threads must be a positive nonzero integer",
2010 if debugging_opts.threads.unwrap_or(1) > 1 && debugging_opts.fuel.is_some() {
2013 "Optimization fuel is incompatible with multiple threads",
2017 if codegen_units == Some(0) {
2020 "Value for codegen units must be a positive nonzero integer",
2024 let incremental = match (&debugging_opts.incremental, &cg.incremental) {
2025 (&Some(ref path1), &Some(ref path2)) => {
2030 "conflicting paths for `-Z incremental` and \
2031 `-C incremental` specified: {} versus {}",
2039 (&Some(ref path), &None) => Some(path),
2040 (&None, &Some(ref path)) => Some(path),
2041 (&None, &None) => None,
2042 }.map(|m| PathBuf::from(m));
2044 if debugging_opts.profile && incremental.is_some() {
2047 "can't instrument with gcov profiling when compiling incrementally",
2051 let mut prints = Vec::<PrintRequest>::new();
2052 if cg.target_cpu.as_ref().map_or(false, |s| s == "help") {
2053 prints.push(PrintRequest::TargetCPUs);
2054 cg.target_cpu = None;
2056 if cg.target_feature == "help" {
2057 prints.push(PrintRequest::TargetFeatures);
2058 cg.target_feature = String::new();
2060 if cg.relocation_model.as_ref().map_or(false, |s| s == "help") {
2061 prints.push(PrintRequest::RelocationModels);
2062 cg.relocation_model = None;
2064 if cg.code_model.as_ref().map_or(false, |s| s == "help") {
2065 prints.push(PrintRequest::CodeModels);
2066 cg.code_model = None;
2071 .map_or(false, |s| s == "help")
2073 prints.push(PrintRequest::TlsModels);
2074 debugging_opts.tls_model = None;
2079 let sysroot_opt = matches.opt_str("sysroot").map(|m| PathBuf::from(&m));
2080 let target_triple = if let Some(target) = matches.opt_str("target") {
2081 if target.ends_with(".json") {
2082 let path = Path::new(&target);
2083 TargetTriple::from_path(&path).unwrap_or_else(|_|
2084 early_error(error_format, &format!("target file {:?} does not exist", path)))
2086 TargetTriple::TargetTriple(target)
2089 TargetTriple::from_triple(host_triple())
2092 if matches.opt_present("O") {
2093 if cg.opt_level.is_some() {
2094 early_error(error_format, "-O and -C opt-level both provided");
2098 match cg.opt_level.as_ref().map(String::as_ref) {
2099 None => OptLevel::No,
2100 Some("0") => OptLevel::No,
2101 Some("1") => OptLevel::Less,
2102 Some("2") => OptLevel::Default,
2103 Some("3") => OptLevel::Aggressive,
2104 Some("s") => OptLevel::Size,
2105 Some("z") => OptLevel::SizeMin,
2110 "optimization level needs to be \
2111 between 0-3, s or z (instead was `{}`)",
2119 let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);
2120 let debuginfo = if matches.opt_present("g") {
2121 if cg.debuginfo.is_some() {
2122 early_error(error_format, "-g and -C debuginfo both provided");
2126 match cg.debuginfo {
2127 None | Some(0) => DebugInfo::None,
2128 Some(1) => DebugInfo::Limited,
2129 Some(2) => DebugInfo::Full,
2134 "debug info level needs to be between \
2135 0-2 (instead was `{}`)",
2143 let mut search_paths = vec![];
2144 for s in &matches.opt_strs("L") {
2145 search_paths.push(SearchPath::from_cli_opt(&s[..], error_format));
2152 // Parse string of the form "[KIND=]lib[:new_name]",
2153 // where KIND is one of "dylib", "framework", "static".
2154 let mut parts = s.splitn(2, '=');
2155 let kind = parts.next().unwrap();
2156 let (name, kind) = match (parts.next(), kind) {
2157 (None, name) => (name, None),
2158 (Some(name), "dylib") => (name, Some(cstore::NativeUnknown)),
2159 (Some(name), "framework") => (name, Some(cstore::NativeFramework)),
2160 (Some(name), "static") => (name, Some(cstore::NativeStatic)),
2161 (Some(name), "static-nobundle") => (name, Some(cstore::NativeStaticNobundle)),
2166 "unknown library kind `{}`, expected \
2167 one of dylib, framework, or static",
2173 if kind == Some(cstore::NativeStaticNobundle) && !nightly_options::is_nightly_build() {
2177 "the library kind 'static-nobundle' is only \
2178 accepted on the nightly compiler"
2182 let mut name_parts = name.splitn(2, ':');
2183 let name = name_parts.next().unwrap();
2184 let new_name = name_parts.next();
2185 (name.to_owned(), new_name.map(|n| n.to_owned()), kind)
2189 let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
2190 let test = matches.opt_present("test");
2192 let is_unstable_enabled = nightly_options::is_unstable_enabled(matches);
2194 prints.extend(matches.opt_strs("print").into_iter().map(|s| match &*s {
2195 "crate-name" => PrintRequest::CrateName,
2196 "file-names" => PrintRequest::FileNames,
2197 "sysroot" => PrintRequest::Sysroot,
2198 "cfg" => PrintRequest::Cfg,
2199 "target-list" => PrintRequest::TargetList,
2200 "target-cpus" => PrintRequest::TargetCPUs,
2201 "target-features" => PrintRequest::TargetFeatures,
2202 "relocation-models" => PrintRequest::RelocationModels,
2203 "code-models" => PrintRequest::CodeModels,
2204 "tls-models" => PrintRequest::TlsModels,
2205 "native-static-libs" => PrintRequest::NativeStaticLibs,
2206 "target-spec-json" => {
2207 if is_unstable_enabled {
2208 PrintRequest::TargetSpec
2212 "the `-Z unstable-options` flag must also be passed to \
2213 enable the target-spec-json print option",
2217 req => early_error(error_format, &format!("unknown print request `{}`", req)),
2220 let borrowck_mode = match debugging_opts.borrowck.as_ref().map(|s| &s[..]) {
2221 None | Some("ast") => BorrowckMode::Ast,
2222 Some("mir") => BorrowckMode::Mir,
2223 Some("compare") => BorrowckMode::Compare,
2224 Some("migrate") => BorrowckMode::Migrate,
2225 Some(m) => early_error(error_format, &format!("unknown borrowck mode `{}`", m)),
2228 if !cg.remark.is_empty() && debuginfo == DebugInfo::None {
2231 "-C remark requires \"-C debuginfo=n\" to show source locations",
2235 if matches.opt_present("extern-private") && !debugging_opts.unstable_options {
2237 ErrorOutputType::default(),
2238 "'--extern-private' is unstable and only \
2239 available for nightly builds of rustc."
2243 let extern_private = matches.opt_strs("extern-private");
2245 let mut externs: BTreeMap<_, BTreeSet<_>> = BTreeMap::new();
2246 for arg in matches.opt_strs("extern").into_iter().chain(matches.opt_strs("extern-private")) {
2247 let mut parts = arg.splitn(2, '=');
2248 let name = parts.next().unwrap_or_else(||
2249 early_error(error_format, "--extern value must not be empty"));
2250 let location = parts.next().map(|s| s.to_string());
2251 if location.is_none() && !is_unstable_enabled {
2254 "the `-Z unstable-options` flag must also be passed to \
2255 enable `--extern crate_name` without `=path`",
2260 .entry(name.to_owned())
2265 let crate_name = matches.opt_str("crate-name");
2267 let remap_path_prefix = matches
2268 .opt_strs("remap-path-prefix")
2271 let mut parts = remap.rsplitn(2, '='); // reverse iterator
2272 let to = parts.next();
2273 let from = parts.next();
2275 (Some(from), Some(to)) => (PathBuf::from(from), PathBuf::from(to)),
2278 "--remap-path-prefix must contain '=' between FROM and TO",
2287 optimize: opt_level,
2292 output_types: OutputTypes(output_types),
2294 maybe_sysroot: sysroot_opt,
2303 externs: Externs(externs),
2307 unstable_features: UnstableFeatures::from_environment(),
2309 actually_rustdoc: false,
2310 cli_forced_codegen_units: codegen_units,
2311 cli_forced_thinlto_off: disable_thinlto,
2320 pub fn parse_crate_types_from_list(list_list: Vec<String>) -> Result<Vec<CrateType>, String> {
2321 let mut crate_types: Vec<CrateType> = Vec::new();
2322 for unparsed_crate_type in &list_list {
2323 for part in unparsed_crate_type.split(',') {
2324 let new_part = match part {
2325 "lib" => default_lib_output(),
2326 "rlib" => CrateType::Rlib,
2327 "staticlib" => CrateType::Staticlib,
2328 "dylib" => CrateType::Dylib,
2329 "cdylib" => CrateType::Cdylib,
2330 "bin" => CrateType::Executable,
2331 "proc-macro" => CrateType::ProcMacro,
2332 _ => return Err(format!("unknown crate type: `{}`", part))
2334 if !crate_types.contains(&new_part) {
2335 crate_types.push(new_part)
2343 pub mod nightly_options {
2345 use syntax::feature_gate::UnstableFeatures;
2346 use super::{ErrorOutputType, OptionStability, RustcOptGroup};
2347 use crate::session::early_error;
2349 pub fn is_unstable_enabled(matches: &getopts::Matches) -> bool {
2354 .any(|x| *x == "unstable-options")
2357 pub fn is_nightly_build() -> bool {
2358 UnstableFeatures::from_environment().is_nightly_build()
2361 pub fn check_nightly_options(matches: &getopts::Matches, flags: &[RustcOptGroup]) {
2362 let has_z_unstable_option = matches
2365 .any(|x| *x == "unstable-options");
2366 let really_allows_unstable_options =
2367 UnstableFeatures::from_environment().is_nightly_build();
2369 for opt in flags.iter() {
2370 if opt.stability == OptionStability::Stable {
2373 if !matches.opt_present(opt.name) {
2376 if opt.name != "Z" && !has_z_unstable_option {
2378 ErrorOutputType::default(),
2380 "the `-Z unstable-options` flag must also be passed to enable \
2386 if really_allows_unstable_options {
2389 match opt.stability {
2390 OptionStability::Unstable => {
2392 "the option `{}` is only accepted on the \
2396 early_error(ErrorOutputType::default(), &msg);
2398 OptionStability::Stable => {}
2404 impl fmt::Display for CrateType {
2405 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
2407 CrateType::Executable => "bin".fmt(f),
2408 CrateType::Dylib => "dylib".fmt(f),
2409 CrateType::Rlib => "rlib".fmt(f),
2410 CrateType::Staticlib => "staticlib".fmt(f),
2411 CrateType::Cdylib => "cdylib".fmt(f),
2412 CrateType::ProcMacro => "proc-macro".fmt(f),
2417 /// Command-line arguments passed to the compiler have to be incorporated with
2418 /// the dependency tracking system for incremental compilation. This module
2419 /// provides some utilities to make this more convenient.
2421 /// The values of all command-line arguments that are relevant for dependency
2422 /// tracking are hashed into a single value that determines whether the
2423 /// incremental compilation cache can be re-used or not. This hashing is done
2424 /// via the DepTrackingHash trait defined below, since the standard Hash
2425 /// implementation might not be suitable (e.g., arguments are stored in a Vec,
2426 /// the hash of which is order dependent, but we might not want the order of
2427 /// arguments to make a difference for the hash).
2429 /// However, since the value provided by Hash::hash often *is* suitable,
2430 /// especially for primitive types, there is the
2431 /// impl_dep_tracking_hash_via_hash!() macro that allows to simply reuse the
2432 /// Hash implementation for DepTrackingHash. It's important though that
2433 /// we have an opt-in scheme here, so one is hopefully forced to think about
2434 /// how the hash should be calculated when adding a new command-line argument.
2437 use crate::middle::cstore;
2438 use std::collections::BTreeMap;
2439 use std::hash::Hash;
2440 use std::path::PathBuf;
2441 use std::collections::hash_map::DefaultHasher;
2442 use super::{CrateType, DebugInfo, ErrorOutputType, OptLevel, OutputTypes,
2443 Passes, Sanitizer, LtoCli, CrossLangLto};
2444 use syntax::feature_gate::UnstableFeatures;
2445 use rustc_target::spec::{MergeFunctions, PanicStrategy, RelroLevel, TargetTriple};
2446 use syntax::edition::Edition;
2448 pub trait DepTrackingHash {
2449 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType);
2452 macro_rules! impl_dep_tracking_hash_via_hash {
2454 impl DepTrackingHash for $t {
2455 fn hash(&self, hasher: &mut DefaultHasher, _: ErrorOutputType) {
2456 Hash::hash(self, hasher);
2462 macro_rules! impl_dep_tracking_hash_for_sortable_vec_of {
2464 impl DepTrackingHash for Vec<$t> {
2465 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2466 let mut elems: Vec<&$t> = self.iter().collect();
2468 Hash::hash(&elems.len(), hasher);
2469 for (index, elem) in elems.iter().enumerate() {
2470 Hash::hash(&index, hasher);
2471 DepTrackingHash::hash(*elem, hasher, error_format);
2478 impl_dep_tracking_hash_via_hash!(bool);
2479 impl_dep_tracking_hash_via_hash!(usize);
2480 impl_dep_tracking_hash_via_hash!(u64);
2481 impl_dep_tracking_hash_via_hash!(String);
2482 impl_dep_tracking_hash_via_hash!(PathBuf);
2483 impl_dep_tracking_hash_via_hash!(lint::Level);
2484 impl_dep_tracking_hash_via_hash!(Option<bool>);
2485 impl_dep_tracking_hash_via_hash!(Option<usize>);
2486 impl_dep_tracking_hash_via_hash!(Option<String>);
2487 impl_dep_tracking_hash_via_hash!(Option<(String, u64)>);
2488 impl_dep_tracking_hash_via_hash!(Option<Vec<String>>);
2489 impl_dep_tracking_hash_via_hash!(Option<MergeFunctions>);
2490 impl_dep_tracking_hash_via_hash!(Option<PanicStrategy>);
2491 impl_dep_tracking_hash_via_hash!(Option<RelroLevel>);
2492 impl_dep_tracking_hash_via_hash!(Option<lint::Level>);
2493 impl_dep_tracking_hash_via_hash!(Option<PathBuf>);
2494 impl_dep_tracking_hash_via_hash!(Option<cstore::NativeLibraryKind>);
2495 impl_dep_tracking_hash_via_hash!(CrateType);
2496 impl_dep_tracking_hash_via_hash!(MergeFunctions);
2497 impl_dep_tracking_hash_via_hash!(PanicStrategy);
2498 impl_dep_tracking_hash_via_hash!(RelroLevel);
2499 impl_dep_tracking_hash_via_hash!(Passes);
2500 impl_dep_tracking_hash_via_hash!(OptLevel);
2501 impl_dep_tracking_hash_via_hash!(LtoCli);
2502 impl_dep_tracking_hash_via_hash!(DebugInfo);
2503 impl_dep_tracking_hash_via_hash!(UnstableFeatures);
2504 impl_dep_tracking_hash_via_hash!(OutputTypes);
2505 impl_dep_tracking_hash_via_hash!(cstore::NativeLibraryKind);
2506 impl_dep_tracking_hash_via_hash!(Sanitizer);
2507 impl_dep_tracking_hash_via_hash!(Option<Sanitizer>);
2508 impl_dep_tracking_hash_via_hash!(TargetTriple);
2509 impl_dep_tracking_hash_via_hash!(Edition);
2510 impl_dep_tracking_hash_via_hash!(CrossLangLto);
2512 impl_dep_tracking_hash_for_sortable_vec_of!(String);
2513 impl_dep_tracking_hash_for_sortable_vec_of!(PathBuf);
2514 impl_dep_tracking_hash_for_sortable_vec_of!(CrateType);
2515 impl_dep_tracking_hash_for_sortable_vec_of!((String, lint::Level));
2516 impl_dep_tracking_hash_for_sortable_vec_of!((
2519 Option<cstore::NativeLibraryKind>
2521 impl_dep_tracking_hash_for_sortable_vec_of!((String, u64));
2523 impl<T1, T2> DepTrackingHash for (T1, T2)
2525 T1: DepTrackingHash,
2526 T2: DepTrackingHash,
2528 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2529 Hash::hash(&0, hasher);
2530 DepTrackingHash::hash(&self.0, hasher, error_format);
2531 Hash::hash(&1, hasher);
2532 DepTrackingHash::hash(&self.1, hasher, error_format);
2536 impl<T1, T2, T3> DepTrackingHash for (T1, T2, T3)
2538 T1: DepTrackingHash,
2539 T2: DepTrackingHash,
2540 T3: DepTrackingHash,
2542 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2543 Hash::hash(&0, hasher);
2544 DepTrackingHash::hash(&self.0, hasher, error_format);
2545 Hash::hash(&1, hasher);
2546 DepTrackingHash::hash(&self.1, hasher, error_format);
2547 Hash::hash(&2, hasher);
2548 DepTrackingHash::hash(&self.2, hasher, error_format);
2552 // This is a stable hash because BTreeMap is a sorted container
2554 sub_hashes: BTreeMap<&'static str, &dyn DepTrackingHash>,
2555 hasher: &mut DefaultHasher,
2556 error_format: ErrorOutputType,
2558 for (key, sub_hash) in sub_hashes {
2559 // Using Hash::hash() instead of DepTrackingHash::hash() is fine for
2560 // the keys, as they are just plain strings
2561 Hash::hash(&key.len(), hasher);
2562 Hash::hash(key, hasher);
2563 sub_hash.hash(hasher, error_format);
2573 use crate::middle::cstore;
2574 use crate::session::config::{build_configuration, build_session_options_and_crate_config};
2575 use crate::session::config::{LtoCli, CrossLangLto};
2576 use crate::session::build_session;
2577 use crate::session::search_paths::SearchPath;
2578 use std::collections::{BTreeMap, BTreeSet};
2579 use std::iter::FromIterator;
2580 use std::path::PathBuf;
2581 use super::{Externs, OutputType, OutputTypes};
2582 use rustc_target::spec::{MergeFunctions, PanicStrategy, RelroLevel};
2583 use syntax::symbol::Symbol;
2584 use syntax::edition::{Edition, DEFAULT_EDITION};
2588 fn optgroups() -> getopts::Options {
2589 let mut opts = getopts::Options::new();
2590 for group in super::rustc_optgroups() {
2591 (group.apply)(&mut opts);
2596 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
2597 BTreeMap::from_iter(entries.into_iter())
2600 fn mk_set<V: Ord>(entries: Vec<V>) -> BTreeSet<V> {
2601 BTreeSet::from_iter(entries.into_iter())
2604 // When the user supplies --test we should implicitly supply --cfg test
2606 fn test_switch_implies_cfg_test() {
2607 syntax::with_globals(|| {
2608 let matches = &match optgroups().parse(&["--test".to_string()]) {
2610 Err(f) => panic!("test_switch_implies_cfg_test: {}", f),
2612 let registry = errors::registry::Registry::new(&[]);
2613 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2614 let sess = build_session(sessopts, None, registry);
2615 let cfg = build_configuration(&sess, cfg);
2616 assert!(cfg.contains(&(Symbol::intern("test"), None)));
2620 // When the user supplies --test and --cfg test, don't implicitly add
2621 // another --cfg test
2623 fn test_switch_implies_cfg_test_unless_cfg_test() {
2624 syntax::with_globals(|| {
2625 let matches = &match optgroups().parse(&["--test".to_string(),
2626 "--cfg=test".to_string()]) {
2628 Err(f) => panic!("test_switch_implies_cfg_test_unless_cfg_test: {}", f),
2630 let registry = errors::registry::Registry::new(&[]);
2631 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2632 let sess = build_session(sessopts, None, registry);
2633 let cfg = build_configuration(&sess, cfg);
2634 let mut test_items = cfg.iter().filter(|&&(name, _)| name == "test");
2635 assert!(test_items.next().is_some());
2636 assert!(test_items.next().is_none());
2641 fn test_can_print_warnings() {
2642 syntax::with_globals(|| {
2643 let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
2644 let registry = errors::registry::Registry::new(&[]);
2645 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2646 let sess = build_session(sessopts, None, registry);
2647 assert!(!sess.diagnostic().flags.can_emit_warnings);
2650 syntax::with_globals(|| {
2651 let matches = optgroups()
2652 .parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()])
2654 let registry = errors::registry::Registry::new(&[]);
2655 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2656 let sess = build_session(sessopts, None, registry);
2657 assert!(sess.diagnostic().flags.can_emit_warnings);
2660 syntax::with_globals(|| {
2661 let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
2662 let registry = errors::registry::Registry::new(&[]);
2663 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2664 let sess = build_session(sessopts, None, registry);
2665 assert!(sess.diagnostic().flags.can_emit_warnings);
2670 fn test_output_types_tracking_hash_different_paths() {
2671 let mut v1 = Options::default();
2672 let mut v2 = Options::default();
2673 let mut v3 = Options::default();
2676 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("./some/thing")))]);
2678 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("/some/thing")))]);
2679 v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
2681 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2682 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2683 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2686 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2687 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2688 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2692 fn test_output_types_tracking_hash_different_construction_order() {
2693 let mut v1 = Options::default();
2694 let mut v2 = Options::default();
2696 v1.output_types = OutputTypes::new(&[
2697 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2698 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2701 v2.output_types = OutputTypes::new(&[
2702 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2703 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2706 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2709 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2713 fn test_externs_tracking_hash_different_construction_order() {
2714 let mut v1 = Options::default();
2715 let mut v2 = Options::default();
2716 let mut v3 = Options::default();
2718 v1.externs = Externs::new(mk_map(vec![
2721 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2725 mk_set(vec![Some(String::from("e")), Some(String::from("f"))]),
2729 v2.externs = Externs::new(mk_map(vec![
2732 mk_set(vec![Some(String::from("e")), Some(String::from("f"))]),
2736 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2740 v3.externs = Externs::new(mk_map(vec![
2743 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2747 mk_set(vec![Some(String::from("f")), Some(String::from("e"))]),
2751 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2752 assert_eq!(v1.dep_tracking_hash(), v3.dep_tracking_hash());
2753 assert_eq!(v2.dep_tracking_hash(), v3.dep_tracking_hash());
2756 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2757 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2758 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2762 fn test_lints_tracking_hash_different_values() {
2763 let mut v1 = Options::default();
2764 let mut v2 = Options::default();
2765 let mut v3 = Options::default();
2767 v1.lint_opts = vec![
2768 (String::from("a"), lint::Allow),
2769 (String::from("b"), lint::Warn),
2770 (String::from("c"), lint::Deny),
2771 (String::from("d"), lint::Forbid),
2774 v2.lint_opts = vec![
2775 (String::from("a"), lint::Allow),
2776 (String::from("b"), lint::Warn),
2777 (String::from("X"), lint::Deny),
2778 (String::from("d"), lint::Forbid),
2781 v3.lint_opts = vec![
2782 (String::from("a"), lint::Allow),
2783 (String::from("b"), lint::Warn),
2784 (String::from("c"), lint::Forbid),
2785 (String::from("d"), lint::Deny),
2788 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2789 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2790 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2793 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2794 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2795 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2799 fn test_lints_tracking_hash_different_construction_order() {
2800 let mut v1 = Options::default();
2801 let mut v2 = Options::default();
2803 v1.lint_opts = vec![
2804 (String::from("a"), lint::Allow),
2805 (String::from("b"), lint::Warn),
2806 (String::from("c"), lint::Deny),
2807 (String::from("d"), lint::Forbid),
2810 v2.lint_opts = vec![
2811 (String::from("a"), lint::Allow),
2812 (String::from("c"), lint::Deny),
2813 (String::from("b"), lint::Warn),
2814 (String::from("d"), lint::Forbid),
2817 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2820 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2821 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2825 fn test_search_paths_tracking_hash_different_order() {
2826 let mut v1 = Options::default();
2827 let mut v2 = Options::default();
2828 let mut v3 = Options::default();
2829 let mut v4 = Options::default();
2833 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2835 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2837 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2839 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2841 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2844 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2846 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2848 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2850 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2852 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2855 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2857 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2859 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2861 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2863 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2866 .push(SearchPath::from_cli_opt("all=mno", super::ErrorOutputType::Json(false)));
2868 .push(SearchPath::from_cli_opt("native=abc", super::ErrorOutputType::Json(false)));
2870 .push(SearchPath::from_cli_opt("crate=def", super::ErrorOutputType::Json(false)));
2872 .push(SearchPath::from_cli_opt("dependency=ghi", super::ErrorOutputType::Json(false)));
2874 .push(SearchPath::from_cli_opt("framework=jkl", super::ErrorOutputType::Json(false)));
2876 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2877 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2878 assert!(v1.dep_tracking_hash() == v4.dep_tracking_hash());
2881 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2882 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2883 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2884 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2888 fn test_native_libs_tracking_hash_different_values() {
2889 let mut v1 = Options::default();
2890 let mut v2 = Options::default();
2891 let mut v3 = Options::default();
2892 let mut v4 = Options::default();
2896 (String::from("a"), None, Some(cstore::NativeStatic)),
2897 (String::from("b"), None, Some(cstore::NativeFramework)),
2898 (String::from("c"), None, Some(cstore::NativeUnknown)),
2903 (String::from("a"), None, Some(cstore::NativeStatic)),
2904 (String::from("X"), None, Some(cstore::NativeFramework)),
2905 (String::from("c"), None, Some(cstore::NativeUnknown)),
2910 (String::from("a"), None, Some(cstore::NativeStatic)),
2911 (String::from("b"), None, Some(cstore::NativeStatic)),
2912 (String::from("c"), None, Some(cstore::NativeUnknown)),
2917 (String::from("a"), None, Some(cstore::NativeStatic)),
2920 Some(String::from("X")),
2921 Some(cstore::NativeFramework),
2923 (String::from("c"), None, Some(cstore::NativeUnknown)),
2926 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2927 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2928 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
2931 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2932 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2933 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2934 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2938 fn test_native_libs_tracking_hash_different_order() {
2939 let mut v1 = Options::default();
2940 let mut v2 = Options::default();
2941 let mut v3 = Options::default();
2945 (String::from("a"), None, Some(cstore::NativeStatic)),
2946 (String::from("b"), None, Some(cstore::NativeFramework)),
2947 (String::from("c"), None, Some(cstore::NativeUnknown)),
2951 (String::from("b"), None, Some(cstore::NativeFramework)),
2952 (String::from("a"), None, Some(cstore::NativeStatic)),
2953 (String::from("c"), None, Some(cstore::NativeUnknown)),
2957 (String::from("c"), None, Some(cstore::NativeUnknown)),
2958 (String::from("a"), None, Some(cstore::NativeStatic)),
2959 (String::from("b"), None, Some(cstore::NativeFramework)),
2962 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2963 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2964 assert!(v2.dep_tracking_hash() == v3.dep_tracking_hash());
2967 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2968 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2969 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2973 fn test_codegen_options_tracking_hash() {
2974 let reference = Options::default();
2975 let mut opts = Options::default();
2977 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
2978 opts.cg.ar = Some(String::from("abc"));
2979 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2981 opts.cg.linker = Some(PathBuf::from("linker"));
2982 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2984 opts.cg.link_args = Some(vec![String::from("abc"), String::from("def")]);
2985 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2987 opts.cg.link_dead_code = true;
2988 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2990 opts.cg.rpath = true;
2991 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2993 opts.cg.extra_filename = String::from("extra-filename");
2994 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2996 opts.cg.codegen_units = Some(42);
2997 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2999 opts.cg.remark = super::Passes::Some(vec![String::from("pass1"), String::from("pass2")]);
3000 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3002 opts.cg.save_temps = true;
3003 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3005 opts.cg.incremental = Some(String::from("abc"));
3006 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3008 // Make sure changing a [TRACKED] option changes the hash
3009 opts = reference.clone();
3010 opts.cg.lto = LtoCli::Fat;
3011 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3013 opts = reference.clone();
3014 opts.cg.target_cpu = Some(String::from("abc"));
3015 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3017 opts = reference.clone();
3018 opts.cg.target_feature = String::from("all the features, all of them");
3019 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3021 opts = reference.clone();
3022 opts.cg.passes = vec![String::from("1"), String::from("2")];
3023 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3025 opts = reference.clone();
3026 opts.cg.llvm_args = vec![String::from("1"), String::from("2")];
3027 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3029 opts = reference.clone();
3030 opts.cg.overflow_checks = Some(true);
3031 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3033 opts = reference.clone();
3034 opts.cg.no_prepopulate_passes = true;
3035 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3037 opts = reference.clone();
3038 opts.cg.no_vectorize_loops = true;
3039 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3041 opts = reference.clone();
3042 opts.cg.no_vectorize_slp = true;
3043 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3045 opts = reference.clone();
3046 opts.cg.soft_float = true;
3047 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3049 opts = reference.clone();
3050 opts.cg.prefer_dynamic = true;
3051 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3053 opts = reference.clone();
3054 opts.cg.no_integrated_as = true;
3055 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3057 opts = reference.clone();
3058 opts.cg.no_redzone = Some(true);
3059 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3061 opts = reference.clone();
3062 opts.cg.relocation_model = Some(String::from("relocation model"));
3063 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3065 opts = reference.clone();
3066 opts.cg.code_model = Some(String::from("code model"));
3067 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3069 opts = reference.clone();
3070 opts.debugging_opts.tls_model = Some(String::from("tls model"));
3071 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3073 opts = reference.clone();
3074 opts.debugging_opts.pgo_gen = Some(String::from("abc"));
3075 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3077 opts = reference.clone();
3078 opts.debugging_opts.pgo_use = String::from("abc");
3079 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3081 opts = reference.clone();
3082 opts.cg.metadata = vec![String::from("A"), String::from("B")];
3083 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3085 opts = reference.clone();
3086 opts.cg.debuginfo = Some(0xdeadbeef);
3087 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3089 opts = reference.clone();
3090 opts.cg.debuginfo = Some(0xba5eba11);
3091 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3093 opts = reference.clone();
3094 opts.cg.force_frame_pointers = Some(false);
3095 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3097 opts = reference.clone();
3098 opts.cg.debug_assertions = Some(true);
3099 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3101 opts = reference.clone();
3102 opts.cg.inline_threshold = Some(0xf007ba11);
3103 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3105 opts = reference.clone();
3106 opts.cg.panic = Some(PanicStrategy::Abort);
3107 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3111 fn test_debugging_options_tracking_hash() {
3112 let reference = Options::default();
3113 let mut opts = Options::default();
3115 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
3116 opts.debugging_opts.verbose = true;
3117 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3118 opts.debugging_opts.time_passes = true;
3119 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3120 opts.debugging_opts.count_llvm_insns = true;
3121 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3122 opts.debugging_opts.time_llvm_passes = true;
3123 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3124 opts.debugging_opts.input_stats = true;
3125 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3126 opts.debugging_opts.codegen_stats = true;
3127 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3128 opts.debugging_opts.borrowck_stats = true;
3129 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3130 opts.debugging_opts.meta_stats = true;
3131 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3132 opts.debugging_opts.print_link_args = true;
3133 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3134 opts.debugging_opts.print_llvm_passes = true;
3135 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3136 opts.debugging_opts.ast_json = true;
3137 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3138 opts.debugging_opts.ast_json_noexpand = true;
3139 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3140 opts.debugging_opts.ls = true;
3141 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3142 opts.debugging_opts.save_analysis = true;
3143 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3144 opts.debugging_opts.flowgraph_print_loans = true;
3145 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3146 opts.debugging_opts.flowgraph_print_moves = true;
3147 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3148 opts.debugging_opts.flowgraph_print_assigns = true;
3149 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3150 opts.debugging_opts.flowgraph_print_all = true;
3151 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3152 opts.debugging_opts.print_region_graph = true;
3153 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3154 opts.debugging_opts.parse_only = true;
3155 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3156 opts.debugging_opts.incremental = Some(String::from("abc"));
3157 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3158 opts.debugging_opts.dump_dep_graph = true;
3159 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3160 opts.debugging_opts.query_dep_graph = true;
3161 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3162 opts.debugging_opts.no_analysis = true;
3163 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3164 opts.debugging_opts.unstable_options = true;
3165 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3166 opts.debugging_opts.trace_macros = true;
3167 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3168 opts.debugging_opts.keep_hygiene_data = true;
3169 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3170 opts.debugging_opts.keep_ast = true;
3171 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3172 opts.debugging_opts.print_mono_items = Some(String::from("abc"));
3173 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3174 opts.debugging_opts.dump_mir = Some(String::from("abc"));
3175 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3176 opts.debugging_opts.dump_mir_dir = String::from("abc");
3177 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3178 opts.debugging_opts.dump_mir_graphviz = true;
3179 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3181 // Make sure changing a [TRACKED] option changes the hash
3182 opts = reference.clone();
3183 opts.debugging_opts.asm_comments = true;
3184 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3186 opts = reference.clone();
3187 opts.debugging_opts.verify_llvm_ir = true;
3188 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3190 opts = reference.clone();
3191 opts.debugging_opts.no_landing_pads = true;
3192 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3194 opts = reference.clone();
3195 opts.debugging_opts.fewer_names = true;
3196 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3198 opts = reference.clone();
3199 opts.debugging_opts.no_codegen = true;
3200 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3202 opts = reference.clone();
3203 opts.debugging_opts.treat_err_as_bug = true;
3204 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3206 opts = reference.clone();
3207 opts.debugging_opts.report_delayed_bugs = true;
3208 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3210 opts = reference.clone();
3211 opts.debugging_opts.continue_parse_after_error = true;
3212 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3214 opts = reference.clone();
3215 opts.debugging_opts.extra_plugins = vec![String::from("plugin1"), String::from("plugin2")];
3216 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3218 opts = reference.clone();
3219 opts.debugging_opts.force_overflow_checks = Some(true);
3220 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3222 opts = reference.clone();
3223 opts.debugging_opts.show_span = Some(String::from("abc"));
3224 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3226 opts = reference.clone();
3227 opts.debugging_opts.mir_opt_level = 3;
3228 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3230 opts = reference.clone();
3231 opts.debugging_opts.relro_level = Some(RelroLevel::Full);
3232 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3234 opts = reference.clone();
3235 opts.debugging_opts.cross_lang_lto = CrossLangLto::LinkerPluginAuto;
3236 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3238 opts = reference.clone();
3239 opts.debugging_opts.merge_functions = Some(MergeFunctions::Disabled);
3240 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3244 fn test_edition_parsing() {
3245 // test default edition
3246 let options = Options::default();
3247 assert!(options.edition == DEFAULT_EDITION);
3249 let matches = optgroups()
3250 .parse(&["--edition=2018".to_string()])
3252 let (sessopts, _) = build_session_options_and_crate_config(&matches);
3253 assert!(sessopts.edition == Edition::Edition2018)