1 // Copyright 2014 The Rust Project Developers. See the COPYRIGHT
2 // file at the top-level directory of this distribution and at
3 // http://rust-lang.org/COPYRIGHT.
5 // Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
6 // http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
7 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
8 // option. This file may not be copied, modified, or distributed
9 // except according to those terms.
11 //! Contains infrastructure for configuring the compiler, including parsing
12 //! command line options.
14 use std::str::FromStr;
16 use session::{early_error, early_warn, Session};
17 use session::search_paths::SearchPaths;
19 use rustc_target::spec::{LinkerFlavor, PanicStrategy, RelroLevel};
20 use rustc_target::spec::{Target, TargetTriple};
24 use syntax::ast::{self, IntTy, UintTy, MetaItemKind};
25 use syntax::source_map::{FileName, FilePathMapping};
26 use syntax::edition::{Edition, EDITION_NAME_LIST, DEFAULT_EDITION};
27 use syntax::parse::token;
29 use syntax::symbol::Symbol;
30 use syntax::feature_gate::UnstableFeatures;
32 use errors::{ColorConfig, FatalError, Handler};
35 use std::collections::{BTreeMap, BTreeSet};
36 use std::collections::btree_map::Iter as BTreeMapIter;
37 use std::collections::btree_map::Keys as BTreeMapKeysIter;
38 use std::collections::btree_map::Values as BTreeMapValuesIter;
40 use rustc_data_structures::fx::FxHashSet;
42 use std::hash::Hasher;
43 use std::collections::hash_map::DefaultHasher;
44 use std::iter::FromIterator;
45 use std::path::{Path, PathBuf};
53 #[derive(Clone, Hash, Debug)]
61 #[derive(Clone, Copy, Debug, PartialEq, Hash)]
71 /// This is what the `LtoCli` values get mapped to after resolving defaults and
72 /// and taking other command line options into account.
73 #[derive(Clone, Copy, PartialEq, Hash, Debug)]
75 /// Don't do any LTO whatsoever
78 /// Do a full crate graph LTO with ThinLTO
81 /// Do a local graph LTO with ThinLTO (only relevant for multiple codegen
85 /// Do a full crate graph LTO with "fat" LTO
89 /// The different settings that the `-C lto` flag can have.
90 #[derive(Clone, Copy, PartialEq, Hash, Debug)]
102 /// No `-C lto` flag passed
106 #[derive(Clone, PartialEq, Hash)]
107 pub enum CrossLangLto {
108 LinkerPlugin(PathBuf),
114 pub fn enabled(&self) -> bool {
116 CrossLangLto::LinkerPlugin(_) |
117 CrossLangLto::LinkerPluginAuto => true,
118 CrossLangLto::Disabled => false,
123 #[derive(Clone, Copy, PartialEq, Hash)]
130 #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, PartialOrd, Ord, RustcEncodable, RustcDecodable)]
131 pub enum OutputType {
142 impl_stable_hash_via_hash!(OutputType);
145 fn is_compatible_with_codegen_units_and_single_output_file(&self) -> bool {
147 OutputType::Exe | OutputType::DepInfo => true,
149 | OutputType::Assembly
150 | OutputType::LlvmAssembly
153 | OutputType::Metadata => false,
157 fn shorthand(&self) -> &'static str {
159 OutputType::Bitcode => "llvm-bc",
160 OutputType::Assembly => "asm",
161 OutputType::LlvmAssembly => "llvm-ir",
162 OutputType::Mir => "mir",
163 OutputType::Object => "obj",
164 OutputType::Metadata => "metadata",
165 OutputType::Exe => "link",
166 OutputType::DepInfo => "dep-info",
170 fn from_shorthand(shorthand: &str) -> Option<Self> {
171 Some(match shorthand {
172 "asm" => OutputType::Assembly,
173 "llvm-ir" => OutputType::LlvmAssembly,
174 "mir" => OutputType::Mir,
175 "llvm-bc" => OutputType::Bitcode,
176 "obj" => OutputType::Object,
177 "metadata" => OutputType::Metadata,
178 "link" => OutputType::Exe,
179 "dep-info" => OutputType::DepInfo,
184 fn shorthands_display() -> String {
186 "`{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`",
187 OutputType::Bitcode.shorthand(),
188 OutputType::Assembly.shorthand(),
189 OutputType::LlvmAssembly.shorthand(),
190 OutputType::Mir.shorthand(),
191 OutputType::Object.shorthand(),
192 OutputType::Metadata.shorthand(),
193 OutputType::Exe.shorthand(),
194 OutputType::DepInfo.shorthand(),
198 pub fn extension(&self) -> &'static str {
200 OutputType::Bitcode => "bc",
201 OutputType::Assembly => "s",
202 OutputType::LlvmAssembly => "ll",
203 OutputType::Mir => "mir",
204 OutputType::Object => "o",
205 OutputType::Metadata => "rmeta",
206 OutputType::DepInfo => "d",
207 OutputType::Exe => "",
212 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
213 pub enum ErrorOutputType {
214 HumanReadable(ColorConfig),
219 impl Default for ErrorOutputType {
220 fn default() -> ErrorOutputType {
221 ErrorOutputType::HumanReadable(ColorConfig::Auto)
225 // Use tree-based collections to cheaply get a deterministic Hash implementation.
226 // DO NOT switch BTreeMap out for an unsorted container type! That would break
227 // dependency tracking for command-line arguments.
228 #[derive(Clone, Hash)]
229 pub struct OutputTypes(BTreeMap<OutputType, Option<PathBuf>>);
231 impl_stable_hash_via_hash!(OutputTypes);
234 pub fn new(entries: &[(OutputType, Option<PathBuf>)]) -> OutputTypes {
235 OutputTypes(BTreeMap::from_iter(
236 entries.iter().map(|&(k, ref v)| (k, v.clone())),
240 pub fn get(&self, key: &OutputType) -> Option<&Option<PathBuf>> {
244 pub fn contains_key(&self, key: &OutputType) -> bool {
245 self.0.contains_key(key)
248 pub fn keys<'a>(&'a self) -> BTreeMapKeysIter<'a, OutputType, Option<PathBuf>> {
252 pub fn values<'a>(&'a self) -> BTreeMapValuesIter<'a, OutputType, Option<PathBuf>> {
256 pub fn len(&self) -> usize {
260 // True if any of the output types require codegen or linking.
261 pub fn should_codegen(&self) -> bool {
262 self.0.keys().any(|k| match *k {
264 | OutputType::Assembly
265 | OutputType::LlvmAssembly
268 | OutputType::Exe => true,
269 OutputType::Metadata | OutputType::DepInfo => false,
274 // Use tree-based collections to cheaply get a deterministic Hash implementation.
275 // DO NOT switch BTreeMap or BTreeSet out for an unsorted container type! That
276 // would break dependency tracking for command-line arguments.
277 #[derive(Clone, Hash)]
278 pub struct Externs(BTreeMap<String, BTreeSet<Option<String>>>);
281 pub fn new(data: BTreeMap<String, BTreeSet<Option<String>>>) -> Externs {
285 pub fn get(&self, key: &str) -> Option<&BTreeSet<Option<String>>> {
289 pub fn iter<'a>(&'a self) -> BTreeMapIter<'a, String, BTreeSet<Option<String>>> {
294 macro_rules! hash_option {
295 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [UNTRACKED]) => ({});
296 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [TRACKED]) => ({
297 if $sub_hashes.insert(stringify!($opt_name),
298 $opt_expr as &dyn dep_tracking::DepTrackingHash).is_some() {
299 bug!("Duplicate key in CLI DepTrackingHash: {}", stringify!($opt_name))
305 [UNTRACKED_WITH_WARNING $warn_val:expr, $warn_text:expr, $error_format:expr]) => ({
306 if *$opt_expr == $warn_val {
307 early_warn($error_format, $warn_text)
312 macro_rules! top_level_options {
313 (pub struct Options { $(
314 $opt:ident : $t:ty [$dep_tracking_marker:ident $($warn_val:expr, $warn_text:expr)*],
322 pub fn dep_tracking_hash(&self) -> u64 {
323 let mut sub_hashes = BTreeMap::new();
328 [$dep_tracking_marker $($warn_val,
330 self.error_format)*]);
332 let mut hasher = DefaultHasher::new();
333 dep_tracking::stable_hash(sub_hashes,
342 // The top-level command-line options struct
344 // For each option, one has to specify how it behaves with regard to the
345 // dependency tracking system of incremental compilation. This is done via the
346 // square-bracketed directive after the field type. The options are:
349 // A change in the given field will cause the compiler to completely clear the
350 // incremental compilation cache before proceeding.
353 // Incremental compilation is not influenced by this option.
355 // [UNTRACKED_WITH_WARNING(val, warning)]
356 // The option is incompatible with incremental compilation in some way. If it
357 // has the value `val`, the string `warning` is emitted as a warning.
359 // If you add a new option to this struct or one of the sub-structs like
360 // CodegenOptions, think about how it influences incremental compilation. If in
361 // doubt, specify [TRACKED], which is always "correct" but might lead to
362 // unnecessary re-compilation.
365 // The crate config requested for the session, which may be combined
366 // with additional crate configurations during the compile process
367 crate_types: Vec<CrateType> [TRACKED],
368 optimize: OptLevel [TRACKED],
369 // Include the debug_assertions flag into dependency tracking, since it
370 // can influence whether overflow checks are done or not.
371 debug_assertions: bool [TRACKED],
372 debuginfo: DebugInfo [TRACKED],
373 lint_opts: Vec<(String, lint::Level)> [TRACKED],
374 lint_cap: Option<lint::Level> [TRACKED],
375 describe_lints: bool [UNTRACKED],
376 output_types: OutputTypes [TRACKED],
377 search_paths: SearchPaths [UNTRACKED],
378 libs: Vec<(String, Option<String>, Option<cstore::NativeLibraryKind>)> [TRACKED],
379 maybe_sysroot: Option<PathBuf> [TRACKED],
381 target_triple: TargetTriple [TRACKED],
383 test: bool [TRACKED],
384 error_format: ErrorOutputType [UNTRACKED],
386 // if Some, enable incremental compilation, using the given
387 // directory to store intermediate results
388 incremental: Option<PathBuf> [UNTRACKED],
390 debugging_opts: DebuggingOptions [TRACKED],
391 prints: Vec<PrintRequest> [UNTRACKED],
392 // Determines which borrow checker(s) to run. This is the parsed, sanitized
393 // version of `debugging_opts.borrowck`, which is just a plain string.
394 borrowck_mode: BorrowckMode [UNTRACKED],
395 cg: CodegenOptions [TRACKED],
396 externs: Externs [UNTRACKED],
397 crate_name: Option<String> [TRACKED],
398 // An optional name to use as the crate for std during std injection,
399 // written `extern crate name as std`. Defaults to `std`. Used by
400 // out-of-tree drivers.
401 alt_std_name: Option<String> [TRACKED],
402 // Indicates how the compiler should treat unstable features
403 unstable_features: UnstableFeatures [TRACKED],
405 // Indicates whether this run of the compiler is actually rustdoc. This
406 // is currently just a hack and will be removed eventually, so please
407 // try to not rely on this too much.
408 actually_rustdoc: bool [TRACKED],
410 // Specifications of codegen units / ThinLTO which are forced as a
411 // result of parsing command line options. These are not necessarily
412 // what rustc was invoked with, but massaged a bit to agree with
413 // commands like `--emit llvm-ir` which they're often incompatible with
414 // if we otherwise use the defaults of rustc.
415 cli_forced_codegen_units: Option<usize> [UNTRACKED],
416 cli_forced_thinlto_off: bool [UNTRACKED],
418 // Remap source path prefixes in all output (messages, object files, debug, etc)
419 remap_path_prefix: Vec<(PathBuf, PathBuf)> [UNTRACKED],
421 edition: Edition [TRACKED],
425 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
426 pub enum PrintRequest {
441 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
442 pub enum BorrowckMode {
450 /// Should we run the MIR-based borrow check, but also fall back
451 /// on the AST borrow check if the MIR-based one errors.
452 pub fn migrate(self) -> bool {
454 BorrowckMode::Ast => false,
455 BorrowckMode::Compare => false,
456 BorrowckMode::Mir => false,
457 BorrowckMode::Migrate => true,
461 /// Should we emit the AST-based borrow checker errors?
462 pub fn use_ast(self) -> bool {
464 BorrowckMode::Ast => true,
465 BorrowckMode::Compare => true,
466 BorrowckMode::Mir => false,
467 BorrowckMode::Migrate => false,
470 /// Should we emit the MIR-based borrow checker errors?
471 pub fn use_mir(self) -> bool {
473 BorrowckMode::Ast => false,
474 BorrowckMode::Compare => true,
475 BorrowckMode::Mir => true,
476 BorrowckMode::Migrate => true,
482 /// Load source from file
485 /// String that is shown in place of a filename
487 /// Anonymous source string
493 pub fn filestem(&self) -> &str {
495 Input::File(ref ifile) => ifile.file_stem().unwrap().to_str().unwrap(),
496 Input::Str { .. } => "rust_out",
500 pub fn get_input(&mut self) -> Option<&mut String> {
502 Input::File(_) => None,
503 Input::Str { ref mut input, .. } => Some(input),
508 #[derive(Clone, Hash)]
509 pub struct OutputFilenames {
510 pub out_directory: PathBuf,
511 pub out_filestem: String,
512 pub single_output_file: Option<PathBuf>,
514 pub outputs: OutputTypes,
517 impl_stable_hash_via_hash!(OutputFilenames);
519 pub const RUST_CGU_EXT: &str = "rcgu";
521 impl OutputFilenames {
522 pub fn path(&self, flavor: OutputType) -> PathBuf {
525 .and_then(|p| p.to_owned())
526 .or_else(|| self.single_output_file.clone())
527 .unwrap_or_else(|| self.temp_path(flavor, None))
530 /// Get the path where a compilation artifact of the given type for the
531 /// given codegen unit should be placed on disk. If codegen_unit_name is
532 /// None, a path distinct from those of any codegen unit will be generated.
533 pub fn temp_path(&self, flavor: OutputType, codegen_unit_name: Option<&str>) -> PathBuf {
534 let extension = flavor.extension();
535 self.temp_path_ext(extension, codegen_unit_name)
538 /// Like temp_path, but also supports things where there is no corresponding
539 /// OutputType, like no-opt-bitcode or lto-bitcode.
540 pub fn temp_path_ext(&self, ext: &str, codegen_unit_name: Option<&str>) -> PathBuf {
541 let base = self.out_directory.join(&self.filestem());
543 let mut extension = String::new();
545 if let Some(codegen_unit_name) = codegen_unit_name {
546 extension.push_str(codegen_unit_name);
550 if !extension.is_empty() {
551 extension.push_str(".");
552 extension.push_str(RUST_CGU_EXT);
553 extension.push_str(".");
556 extension.push_str(ext);
559 let path = base.with_extension(&extension[..]);
563 pub fn with_extension(&self, extension: &str) -> PathBuf {
565 .join(&self.filestem())
566 .with_extension(extension)
569 pub fn filestem(&self) -> String {
570 format!("{}{}", self.out_filestem, self.extra)
574 pub fn host_triple() -> &'static str {
575 // Get the host triple out of the build environment. This ensures that our
576 // idea of the host triple is the same as for the set of libraries we've
577 // actually built. We can't just take LLVM's host triple because they
578 // normalize all ix86 architectures to i386.
580 // Instead of grabbing the host triple (for the current host), we grab (at
581 // compile time) the target triple that this rustc is built with and
582 // calling that (at runtime) the host triple.
583 (option_env!("CFG_COMPILER_HOST_TRIPLE")).expect("CFG_COMPILER_HOST_TRIPLE")
586 impl Default for Options {
587 fn default() -> Options {
589 crate_types: Vec::new(),
590 optimize: OptLevel::No,
591 debuginfo: DebugInfo::None,
592 lint_opts: Vec::new(),
594 describe_lints: false,
595 output_types: OutputTypes(BTreeMap::new()),
596 search_paths: SearchPaths::new(),
598 target_triple: TargetTriple::from_triple(host_triple()),
601 debugging_opts: basic_debugging_options(),
603 borrowck_mode: BorrowckMode::Ast,
604 cg: basic_codegen_options(),
605 error_format: ErrorOutputType::default(),
606 externs: Externs(BTreeMap::new()),
610 unstable_features: UnstableFeatures::Disallow,
611 debug_assertions: true,
612 actually_rustdoc: false,
613 cli_forced_codegen_units: None,
614 cli_forced_thinlto_off: false,
615 remap_path_prefix: Vec::new(),
616 edition: DEFAULT_EDITION,
622 /// True if there is a reason to build the dep graph.
623 pub fn build_dep_graph(&self) -> bool {
624 self.incremental.is_some() || self.debugging_opts.dump_dep_graph
625 || self.debugging_opts.query_dep_graph
629 pub fn enable_dep_node_debug_strs(&self) -> bool {
630 cfg!(debug_assertions)
631 && (self.debugging_opts.query_dep_graph || self.debugging_opts.incremental_info)
634 pub fn file_path_mapping(&self) -> FilePathMapping {
635 FilePathMapping::new(self.remap_path_prefix.clone())
638 /// True if there will be an output file generated
639 pub fn will_create_output_file(&self) -> bool {
640 !self.debugging_opts.parse_only && // The file is just being parsed
641 !self.debugging_opts.ls // The file is just being queried
645 pub fn share_generics(&self) -> bool {
646 match self.debugging_opts.share_generics {
647 Some(setting) => setting,
649 match self.optimize {
653 OptLevel::SizeMin => true,
655 OptLevel::Aggressive => false,
662 // The type of entry function, so
663 // users can have their own entry
665 #[derive(Copy, Clone, PartialEq)]
666 pub enum EntryFnType {
671 #[derive(Copy, PartialEq, PartialOrd, Clone, Ord, Eq, Hash, Debug)]
681 #[derive(Clone, Hash)]
688 pub fn is_empty(&self) -> bool {
690 Passes::Some(ref v) => v.is_empty(),
691 Passes::All => false,
696 /// Declare a macro that will define all CodegenOptions/DebuggingOptions fields and parsers all
697 /// at once. The goal of this macro is to define an interface that can be
698 /// programmatically used by the option parser in order to initialize the struct
699 /// without hardcoding field names all over the place.
701 /// The goal is to invoke this macro once with the correct fields, and then this
702 /// macro generates all necessary code. The main gotcha of this macro is the
703 /// cgsetters module which is a bunch of generated code to parse an option into
704 /// its respective field in the struct. There are a few hand-written parsers for
705 /// parsing specific types of values in this module.
706 macro_rules! options {
707 ($struct_name:ident, $setter_name:ident, $defaultfn:ident,
708 $buildfn:ident, $prefix:expr, $outputname:expr,
709 $stat:ident, $mod_desc:ident, $mod_set:ident,
710 $($opt:ident : $t:ty = (
713 [$dep_tracking_marker:ident $(($dep_warn_val:expr, $dep_warn_text:expr))*],
718 pub struct $struct_name { $(pub $opt: $t),* }
720 pub fn $defaultfn() -> $struct_name {
721 $struct_name { $($opt: $init),* }
724 pub fn $buildfn(matches: &getopts::Matches, error_format: ErrorOutputType) -> $struct_name
726 let mut op = $defaultfn();
727 for option in matches.opt_strs($prefix) {
728 let mut iter = option.splitn(2, '=');
729 let key = iter.next().unwrap();
730 let value = iter.next();
731 let option_to_lookup = key.replace("-", "_");
732 let mut found = false;
733 for &(candidate, setter, opt_type_desc, _) in $stat {
734 if option_to_lookup != candidate { continue }
735 if !setter(&mut op, value) {
736 match (value, opt_type_desc) {
737 (Some(..), None) => {
738 early_error(error_format, &format!("{} option `{}` takes no \
739 value", $outputname, key))
741 (None, Some(type_desc)) => {
742 early_error(error_format, &format!("{0} option `{1}` requires \
743 {2} ({3} {1}=<value>)",
747 (Some(value), Some(type_desc)) => {
748 early_error(error_format, &format!("incorrect value `{}` for {} \
749 option `{}` - {} was expected",
753 (None, None) => bug!()
760 early_error(error_format, &format!("unknown {} option: `{}`",
767 impl<'a> dep_tracking::DepTrackingHash for $struct_name {
768 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
769 let mut sub_hashes = BTreeMap::new();
774 [$dep_tracking_marker $($dep_warn_val,
778 dep_tracking::stable_hash(sub_hashes, hasher, error_format);
782 pub type $setter_name = fn(&mut $struct_name, v: Option<&str>) -> bool;
783 pub const $stat: &[(&str, $setter_name, Option<&str>, &str)] =
784 &[ $( (stringify!($opt), $mod_set::$opt, $mod_desc::$parse, $desc) ),* ];
786 #[allow(non_upper_case_globals, dead_code)]
788 pub const parse_bool: Option<&str> = None;
789 pub const parse_opt_bool: Option<&str> =
790 Some("one of: `y`, `yes`, `on`, `n`, `no`, or `off`");
791 pub const parse_string: Option<&str> = Some("a string");
792 pub const parse_string_push: Option<&str> = Some("a string");
793 pub const parse_pathbuf_push: Option<&str> = Some("a path");
794 pub const parse_opt_string: Option<&str> = Some("a string");
795 pub const parse_opt_pathbuf: Option<&str> = Some("a path");
796 pub const parse_list: Option<&str> = Some("a space-separated list of strings");
797 pub const parse_opt_list: Option<&str> = Some("a space-separated list of strings");
798 pub const parse_uint: Option<&str> = Some("a number");
799 pub const parse_passes: Option<&str> =
800 Some("a space-separated list of passes, or `all`");
801 pub const parse_opt_uint: Option<&str> =
803 pub const parse_panic_strategy: Option<&str> =
804 Some("either `unwind` or `abort`");
805 pub const parse_relro_level: Option<&str> =
806 Some("one of: `full`, `partial`, or `off`");
807 pub const parse_sanitizer: Option<&str> =
808 Some("one of: `address`, `leak`, `memory` or `thread`");
809 pub const parse_linker_flavor: Option<&str> =
810 Some(::rustc_target::spec::LinkerFlavor::one_of());
811 pub const parse_optimization_fuel: Option<&str> =
812 Some("crate=integer");
813 pub const parse_unpretty: Option<&str> =
814 Some("`string` or `string=string`");
815 pub const parse_lto: Option<&str> =
816 Some("either a boolean (`yes`, `no`, `on`, `off`, etc), `thin`, \
818 pub const parse_cross_lang_lto: Option<&str> =
819 Some("either a boolean (`yes`, `no`, `on`, `off`, etc), \
820 or the path to the linker plugin");
825 use super::{$struct_name, Passes, Sanitizer, LtoCli, CrossLangLto};
826 use rustc_target::spec::{LinkerFlavor, PanicStrategy, RelroLevel};
827 use std::path::PathBuf;
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)),
1062 options! {CodegenOptions, CodegenSetter, basic_codegen_options,
1063 build_codegen_options, "C", "codegen",
1064 CG_OPTIONS, cg_type_desc, cgsetters,
1065 ar: Option<String> = (None, parse_opt_string, [UNTRACKED],
1066 "this option is deprecated and does nothing"),
1067 linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1068 "system linker to link outputs with"),
1069 link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1070 "a single extra argument to append to the linker invocation (can be used several times)"),
1071 link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1072 "extra arguments to append to the linker invocation (space separated)"),
1073 link_dead_code: bool = (false, parse_bool, [UNTRACKED],
1074 "don't let linker strip dead code (turning it on can be used for code coverage)"),
1075 lto: LtoCli = (LtoCli::Unspecified, parse_lto, [TRACKED],
1076 "perform LLVM link-time optimizations"),
1077 target_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1078 "select target processor (rustc --print target-cpus for details)"),
1079 target_feature: String = (String::new(), parse_string, [TRACKED],
1080 "target specific attributes (rustc --print target-features for details)"),
1081 passes: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1082 "a list of extra LLVM passes to run (space separated)"),
1083 llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1084 "a list of arguments to pass to llvm (space separated)"),
1085 save_temps: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1086 "`-C save-temps` might not produce all requested temporary products \
1087 when incremental compilation is enabled.")],
1088 "save all temporary output files during compilation"),
1089 rpath: bool = (false, parse_bool, [UNTRACKED],
1090 "set rpath values in libs/exes"),
1091 overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1092 "use overflow checks for integer arithmetic"),
1093 no_prepopulate_passes: bool = (false, parse_bool, [TRACKED],
1094 "don't pre-populate the pass manager with a list of passes"),
1095 no_vectorize_loops: bool = (false, parse_bool, [TRACKED],
1096 "don't run the loop vectorization optimization passes"),
1097 no_vectorize_slp: bool = (false, parse_bool, [TRACKED],
1098 "don't run LLVM's SLP vectorization pass"),
1099 soft_float: bool = (false, parse_bool, [TRACKED],
1100 "use soft float ABI (*eabihf targets only)"),
1101 prefer_dynamic: bool = (false, parse_bool, [TRACKED],
1102 "prefer dynamic linking to static linking"),
1103 no_integrated_as: bool = (false, parse_bool, [TRACKED],
1104 "use an external assembler rather than LLVM's integrated one"),
1105 no_redzone: Option<bool> = (None, parse_opt_bool, [TRACKED],
1106 "disable the use of the redzone"),
1107 relocation_model: Option<String> = (None, parse_opt_string, [TRACKED],
1108 "choose the relocation model to use (rustc --print relocation-models for details)"),
1109 code_model: Option<String> = (None, parse_opt_string, [TRACKED],
1110 "choose the code model to use (rustc --print code-models for details)"),
1111 metadata: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1112 "metadata to mangle symbol names with"),
1113 extra_filename: String = (String::new(), parse_string, [UNTRACKED],
1114 "extra data to put in each output filename"),
1115 codegen_units: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1116 "divide crate into N units to optimize in parallel"),
1117 remark: Passes = (Passes::Some(Vec::new()), parse_passes, [UNTRACKED],
1118 "print remarks for these optimization passes (space separated, or \"all\")"),
1119 no_stack_check: bool = (false, parse_bool, [UNTRACKED],
1120 "the --no-stack-check flag is deprecated and does nothing"),
1121 debuginfo: Option<usize> = (None, parse_opt_uint, [TRACKED],
1122 "debug info emission level, 0 = no debug info, 1 = line tables only, \
1123 2 = full debug info with variable and type information"),
1124 opt_level: Option<String> = (None, parse_opt_string, [TRACKED],
1125 "optimize with possible levels 0-3, s, or z"),
1126 force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
1127 "force use of the frame pointers"),
1128 debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
1129 "explicitly enable the cfg(debug_assertions) directive"),
1130 inline_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
1131 "set the threshold for inlining a function (default: 225)"),
1132 panic: Option<PanicStrategy> = (None, parse_panic_strategy,
1133 [TRACKED], "panic strategy to compile crate with"),
1134 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1135 "enable incremental compilation"),
1136 default_linker_libraries: Option<bool> = (None, parse_opt_bool, [UNTRACKED],
1137 "allow the linker to link its default libraries"),
1140 options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
1141 build_debugging_options, "Z", "debugging",
1142 DB_OPTIONS, db_type_desc, dbsetters,
1143 codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
1144 "the backend to use"),
1145 verbose: bool = (false, parse_bool, [UNTRACKED],
1146 "in general, enable more debug printouts"),
1147 span_free_formats: bool = (false, parse_bool, [UNTRACKED],
1148 "when debug-printing compiler state, do not include spans"), // o/w tests have closure@path
1149 identify_regions: bool = (false, parse_bool, [UNTRACKED],
1150 "make unnamed regions display as '# (where # is some non-ident unique id)"),
1151 borrowck: Option<String> = (None, parse_opt_string, [UNTRACKED],
1152 "select which borrowck is used (`ast`, `mir`, `migrate`, or `compare`)"),
1153 two_phase_borrows: bool = (false, parse_bool, [UNTRACKED],
1154 "use two-phase reserved/active distinction for `&mut` borrows in MIR borrowck"),
1155 two_phase_beyond_autoref: bool = (false, parse_bool, [UNTRACKED],
1156 "when using two-phase-borrows, allow two phases even for non-autoref `&mut` borrows"),
1157 time_passes: bool = (false, parse_bool, [UNTRACKED],
1158 "measure time of each rustc pass"),
1159 count_llvm_insns: bool = (false, parse_bool,
1160 [UNTRACKED_WITH_WARNING(true,
1161 "The output generated by `-Z count_llvm_insns` might not be reliable \
1162 when used with incremental compilation")],
1163 "count where LLVM instrs originate"),
1164 time_llvm_passes: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1165 "The output of `-Z time-llvm-passes` will only reflect timings of \
1166 re-codegened modules when used with incremental compilation" )],
1167 "measure time of each LLVM pass"),
1168 input_stats: bool = (false, parse_bool, [UNTRACKED],
1169 "gather statistics about the input"),
1170 codegen_stats: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1171 "The output of `-Z codegen-stats` might not be accurate when incremental \
1172 compilation is enabled")],
1173 "gather codegen statistics"),
1174 asm_comments: bool = (false, parse_bool, [TRACKED],
1175 "generate comments into the assembly (may change behavior)"),
1176 verify_llvm_ir: bool = (false, parse_bool, [TRACKED],
1178 borrowck_stats: bool = (false, parse_bool, [UNTRACKED],
1179 "gather borrowck statistics"),
1180 no_landing_pads: bool = (false, parse_bool, [TRACKED],
1181 "omit landing pads for unwinding"),
1182 fewer_names: bool = (false, parse_bool, [TRACKED],
1183 "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR)"),
1184 meta_stats: bool = (false, parse_bool, [UNTRACKED],
1185 "gather metadata statistics"),
1186 print_link_args: bool = (false, parse_bool, [UNTRACKED],
1187 "print the arguments passed to the linker"),
1188 print_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1189 "prints the llvm optimization passes being run"),
1190 ast_json: bool = (false, parse_bool, [UNTRACKED],
1191 "print the AST as JSON and halt"),
1192 query_threads: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1193 "execute queries on a thread pool with N threads"),
1194 ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED],
1195 "print the pre-expansion AST as JSON and halt"),
1196 ls: bool = (false, parse_bool, [UNTRACKED],
1197 "list the symbols defined by a library crate"),
1198 save_analysis: bool = (false, parse_bool, [UNTRACKED],
1199 "write syntax and type analysis (in JSON format) information, in \
1200 addition to normal output"),
1201 flowgraph_print_loans: bool = (false, parse_bool, [UNTRACKED],
1202 "include loan analysis data in -Z unpretty flowgraph output"),
1203 flowgraph_print_moves: bool = (false, parse_bool, [UNTRACKED],
1204 "include move analysis data in -Z unpretty flowgraph output"),
1205 flowgraph_print_assigns: bool = (false, parse_bool, [UNTRACKED],
1206 "include assignment analysis data in -Z unpretty flowgraph output"),
1207 flowgraph_print_all: bool = (false, parse_bool, [UNTRACKED],
1208 "include all dataflow analysis data in -Z unpretty flowgraph output"),
1209 print_region_graph: bool = (false, parse_bool, [UNTRACKED],
1210 "prints region inference graph. \
1211 Use with RUST_REGION_GRAPH=help for more info"),
1212 parse_only: bool = (false, parse_bool, [UNTRACKED],
1213 "parse only; do not compile, assemble, or link"),
1214 no_codegen: bool = (false, parse_bool, [TRACKED],
1215 "run all passes except codegen; no output"),
1216 treat_err_as_bug: bool = (false, parse_bool, [TRACKED],
1217 "treat all errors that occur as bugs"),
1218 report_delayed_bugs: bool = (false, parse_bool, [TRACKED],
1219 "immediately print bugs registered with `delay_span_bug`"),
1220 external_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1221 "show macro backtraces even for non-local macros"),
1222 teach: bool = (false, parse_bool, [TRACKED],
1223 "show extended diagnostic help"),
1224 continue_parse_after_error: bool = (false, parse_bool, [TRACKED],
1225 "attempt to recover from parse errors (experimental)"),
1226 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1227 "enable incremental compilation (experimental)"),
1228 incremental_queries: bool = (true, parse_bool, [UNTRACKED],
1229 "enable incremental compilation support for queries (experimental)"),
1230 incremental_info: bool = (false, parse_bool, [UNTRACKED],
1231 "print high-level information about incremental reuse (or the lack thereof)"),
1232 incremental_dump_hash: bool = (false, parse_bool, [UNTRACKED],
1233 "dump hash information in textual format to stdout"),
1234 incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
1235 "verify incr. comp. hashes of green query instances"),
1236 incremental_ignore_spans: bool = (false, parse_bool, [UNTRACKED],
1237 "ignore spans during ICH computation -- used for testing"),
1238 dump_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1239 "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv)"),
1240 query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1241 "enable queries of the dependency graph for regression testing"),
1242 profile_queries: bool = (false, parse_bool, [UNTRACKED],
1243 "trace and profile the queries of the incremental compilation framework"),
1244 profile_queries_and_keys: bool = (false, parse_bool, [UNTRACKED],
1245 "trace and profile the queries and keys of the incremental compilation framework"),
1246 no_analysis: bool = (false, parse_bool, [UNTRACKED],
1247 "parse and expand the source, but run no analysis"),
1248 extra_plugins: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1249 "load extra plugins"),
1250 unstable_options: bool = (false, parse_bool, [UNTRACKED],
1251 "adds unstable command line options to rustc interface"),
1252 force_overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1253 "force overflow checks on or off"),
1254 trace_macros: bool = (false, parse_bool, [UNTRACKED],
1255 "for every macro invocation, print its name and arguments"),
1256 debug_macros: bool = (false, parse_bool, [TRACKED],
1257 "emit line numbers debug info inside macros"),
1258 keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED],
1259 "don't clear the hygiene data after analysis"),
1260 keep_ast: bool = (false, parse_bool, [UNTRACKED],
1261 "keep the AST after lowering it to HIR"),
1262 show_span: Option<String> = (None, parse_opt_string, [TRACKED],
1263 "show spans for compiler debugging (expr|pat|ty)"),
1264 print_type_sizes: bool = (false, parse_bool, [UNTRACKED],
1265 "print layout information for each type encountered"),
1266 print_mono_items: Option<String> = (None, parse_opt_string, [UNTRACKED],
1267 "print the result of the monomorphization collection pass"),
1268 mir_opt_level: usize = (1, parse_uint, [TRACKED],
1269 "set the MIR optimization level (0-3, default: 1)"),
1270 mutable_noalias: Option<bool> = (None, parse_opt_bool, [TRACKED],
1271 "emit noalias metadata for mutable references (default: yes on LLVM >= 6)"),
1272 arg_align_attributes: bool = (false, parse_bool, [TRACKED],
1273 "emit align metadata for reference arguments"),
1274 dump_mir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1275 "dump MIR state at various points in transforms"),
1276 dump_mir_dir: String = (String::from("mir_dump"), parse_string, [UNTRACKED],
1277 "the directory the MIR is dumped into"),
1278 dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED],
1279 "in addition to `.mir` files, create graphviz `.dot` files"),
1280 dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED],
1281 "if set, exclude the pass number when dumping MIR (used in tests)"),
1282 mir_emit_retag: bool = (false, parse_bool, [TRACKED],
1283 "emit Retagging MIR statements, interpreted e.g., by miri; implies -Zmir-opt-level=0"),
1284 perf_stats: bool = (false, parse_bool, [UNTRACKED],
1285 "print some performance-related statistics"),
1286 hir_stats: bool = (false, parse_bool, [UNTRACKED],
1287 "print some statistics about AST and HIR"),
1288 always_encode_mir: bool = (false, parse_bool, [TRACKED],
1289 "encode MIR of all functions into the crate metadata"),
1290 osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
1291 "pass `-install_name @rpath/...` to the macOS linker"),
1292 sanitizer: Option<Sanitizer> = (None, parse_sanitizer, [TRACKED],
1294 linker_flavor: Option<LinkerFlavor> = (None, parse_linker_flavor, [UNTRACKED],
1296 fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
1297 "set the optimization fuel quota for a crate"),
1298 print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
1299 "make Rustc print the total optimization fuel used by a crate"),
1300 force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
1301 "force all crates to be `rustc_private` unstable"),
1302 pre_link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1303 "a single extra argument to prepend the linker invocation (can be used several times)"),
1304 pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1305 "extra arguments to prepend to the linker invocation (space separated)"),
1306 profile: bool = (false, parse_bool, [TRACKED],
1307 "insert profiling code"),
1308 pgo_gen: Option<String> = (None, parse_opt_string, [TRACKED],
1309 "Generate PGO profile data, to a given file, or to the default location if it's empty."),
1310 pgo_use: String = (String::new(), parse_string, [TRACKED],
1311 "Use PGO profile data from the given profile file."),
1312 disable_instrumentation_preinliner: bool = (false, parse_bool, [TRACKED],
1313 "Disable the instrumentation pre-inliner, useful for profiling / PGO."),
1314 relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
1315 "choose which RELRO level to use"),
1316 nll_subminimal_causes: bool = (false, parse_bool, [UNTRACKED],
1317 "when tracking region error causes, accept subminimal results for faster execution."),
1318 nll_facts: bool = (false, parse_bool, [UNTRACKED],
1319 "dump facts from NLL analysis into side files"),
1320 disable_nll_user_type_assert: bool = (false, parse_bool, [UNTRACKED],
1321 "disable user provided type assertion in NLL"),
1322 nll_dont_emit_read_for_match: bool = (false, parse_bool, [UNTRACKED],
1323 "in match codegen, do not include FakeRead statements (used by mir-borrowck)"),
1324 dont_buffer_diagnostics: bool = (false, parse_bool, [UNTRACKED],
1325 "emit diagnostics rather than buffering (breaks NLL error downgrading, sorting)."),
1326 polonius: bool = (false, parse_bool, [UNTRACKED],
1327 "enable polonius-based borrow-checker"),
1328 codegen_time_graph: bool = (false, parse_bool, [UNTRACKED],
1329 "generate a graphical HTML report of time spent in codegen and LLVM"),
1330 thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
1331 "enable ThinLTO when possible"),
1332 inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
1333 "control whether #[inline] functions are in all cgus"),
1334 tls_model: Option<String> = (None, parse_opt_string, [TRACKED],
1335 "choose the TLS model to use (rustc --print tls-models for details)"),
1336 saturating_float_casts: bool = (false, parse_bool, [TRACKED],
1337 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1338 the max/min integer respectively, and NaN is mapped to 0"),
1339 lower_128bit_ops: Option<bool> = (None, parse_opt_bool, [TRACKED],
1340 "rewrite operators on i128 and u128 into lang item calls (typically provided \
1341 by compiler-builtins) so codegen doesn't need to support them,
1342 overriding the default for the current target"),
1343 human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
1344 "generate human-readable, predictable names for codegen units"),
1345 dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
1346 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
1348 unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
1349 "Present the input source, unstable (and less-pretty) variants;
1350 valid types are any of the types for `--pretty`, as well as:
1351 `flowgraph=<nodeid>` (graphviz formatted flowgraph for node),
1352 `everybody_loops` (all function bodies replaced with `loop {}`),
1353 `hir` (the HIR), `hir,identified`, or
1354 `hir,typed` (HIR with types for each node)."),
1355 run_dsymutil: Option<bool> = (None, parse_opt_bool, [TRACKED],
1356 "run `dsymutil` and delete intermediate object files"),
1357 ui_testing: bool = (false, parse_bool, [UNTRACKED],
1358 "format compiler diagnostics in a way that's better suitable for UI testing"),
1359 embed_bitcode: bool = (false, parse_bool, [TRACKED],
1360 "embed LLVM bitcode in object files"),
1361 strip_debuginfo_if_disabled: Option<bool> = (None, parse_opt_bool, [TRACKED],
1362 "tell the linker to strip debuginfo when building without debuginfo enabled."),
1363 share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
1364 "make the current crate share its generic instantiations"),
1365 chalk: bool = (false, parse_bool, [TRACKED],
1366 "enable the experimental Chalk-based trait solving engine"),
1367 cross_lang_lto: CrossLangLto = (CrossLangLto::Disabled, parse_cross_lang_lto, [TRACKED],
1368 "generate build artifacts that are compatible with linker-based LTO."),
1369 no_parallel_llvm: bool = (false, parse_bool, [UNTRACKED],
1370 "don't run LLVM in parallel (while keeping codegen-units and ThinLTO)"),
1371 no_leak_check: bool = (false, parse_bool, [UNTRACKED],
1372 "disables the 'leak check' for subtyping; unsound, but useful for tests"),
1373 crate_attr: Vec<String> = (Vec::new(), parse_string_push, [TRACKED],
1374 "inject the given attribute in the crate"),
1375 self_profile: bool = (false, parse_bool, [UNTRACKED],
1376 "run the self profiler"),
1377 profile_json: bool = (false, parse_bool, [UNTRACKED],
1378 "output a json file with profiler results"),
1379 emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
1380 "emits a section containing stack size metadata"),
1381 plt: Option<bool> = (None, parse_opt_bool, [TRACKED],
1382 "whether to use the PLT when calling into shared libraries;
1383 only has effect for PIC code on systems with ELF binaries
1384 (default: PLT is disabled if full relro is enabled)"),
1387 pub fn default_lib_output() -> CrateType {
1391 pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
1392 let end = &sess.target.target.target_endian;
1393 let arch = &sess.target.target.arch;
1394 let wordsz = &sess.target.target.target_pointer_width;
1395 let os = &sess.target.target.target_os;
1396 let env = &sess.target.target.target_env;
1397 let vendor = &sess.target.target.target_vendor;
1398 let min_atomic_width = sess.target.target.min_atomic_width();
1399 let max_atomic_width = sess.target.target.max_atomic_width();
1400 let atomic_cas = sess.target.target.options.atomic_cas;
1402 let mut ret = FxHashSet::default();
1403 ret.reserve(6); // the minimum number of insertions
1405 ret.insert((Symbol::intern("target_os"), Some(Symbol::intern(os))));
1406 if let Some(ref fam) = sess.target.target.options.target_family {
1407 ret.insert((Symbol::intern("target_family"), Some(Symbol::intern(fam))));
1408 if fam == "windows" || fam == "unix" {
1409 ret.insert((Symbol::intern(fam), None));
1412 ret.insert((Symbol::intern("target_arch"), Some(Symbol::intern(arch))));
1413 ret.insert((Symbol::intern("target_endian"), Some(Symbol::intern(end))));
1415 Symbol::intern("target_pointer_width"),
1416 Some(Symbol::intern(wordsz)),
1418 ret.insert((Symbol::intern("target_env"), Some(Symbol::intern(env))));
1420 Symbol::intern("target_vendor"),
1421 Some(Symbol::intern(vendor)),
1423 if sess.target.target.options.has_elf_tls {
1424 ret.insert((Symbol::intern("target_thread_local"), None));
1426 for &i in &[8, 16, 32, 64, 128] {
1427 if i >= min_atomic_width && i <= max_atomic_width {
1428 let s = i.to_string();
1430 Symbol::intern("target_has_atomic"),
1431 Some(Symbol::intern(&s)),
1435 Symbol::intern("target_has_atomic"),
1436 Some(Symbol::intern("ptr")),
1442 ret.insert((Symbol::intern("target_has_atomic"), Some(Symbol::intern("cas"))));
1444 if sess.opts.debug_assertions {
1445 ret.insert((Symbol::intern("debug_assertions"), None));
1447 if sess.opts.crate_types.contains(&CrateType::ProcMacro) {
1448 ret.insert((Symbol::intern("proc_macro"), None));
1453 pub fn build_configuration(sess: &Session, mut user_cfg: ast::CrateConfig) -> ast::CrateConfig {
1454 // Combine the configuration requested by the session (command line) with
1455 // some default and generated configuration items
1456 let default_cfg = default_configuration(sess);
1457 // If the user wants a test runner, then add the test cfg
1459 user_cfg.insert((Symbol::intern("test"), None));
1461 user_cfg.extend(default_cfg.iter().cloned());
1465 pub fn build_target_config(opts: &Options, sp: &Handler) -> Config {
1466 let target = Target::search(&opts.target_triple).unwrap_or_else(|e| {
1467 sp.struct_fatal(&format!("Error loading target specification: {}", e))
1468 .help("Use `--print target-list` for a list of built-in targets")
1473 let (isize_ty, usize_ty) = match &target.target_pointer_width[..] {
1474 "16" => (ast::IntTy::I16, ast::UintTy::U16),
1475 "32" => (ast::IntTy::I32, ast::UintTy::U32),
1476 "64" => (ast::IntTy::I64, ast::UintTy::U64),
1477 w => sp.fatal(&format!(
1478 "target specification was invalid: \
1479 unrecognized target-pointer-width {}",
1491 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
1492 pub enum OptionStability {
1497 pub struct RustcOptGroup {
1498 pub apply: Box<dyn Fn(&mut getopts::Options) -> &mut getopts::Options>,
1499 pub name: &'static str,
1500 pub stability: OptionStability,
1503 impl RustcOptGroup {
1504 pub fn is_stable(&self) -> bool {
1505 self.stability == OptionStability::Stable
1508 pub fn stable<F>(name: &'static str, f: F) -> RustcOptGroup
1510 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1515 stability: OptionStability::Stable,
1519 pub fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup
1521 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1526 stability: OptionStability::Unstable,
1531 // The `opt` local module holds wrappers around the `getopts` API that
1532 // adds extra rustc-specific metadata to each option; such metadata
1533 // is exposed by . The public
1534 // functions below ending with `_u` are the functions that return
1535 // *unstable* options, i.e., options that are only enabled when the
1536 // user also passes the `-Z unstable-options` debugging flag.
1538 // The `fn opt_u` etc below are written so that we can use them
1539 // in the future; do not warn about them not being used right now.
1540 #![allow(dead_code)]
1543 use super::RustcOptGroup;
1545 pub type R = RustcOptGroup;
1546 pub type S = &'static str;
1548 fn stable<F>(name: S, f: F) -> R
1550 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1552 RustcOptGroup::stable(name, f)
1555 fn unstable<F>(name: S, f: F) -> R
1557 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1559 RustcOptGroup::unstable(name, f)
1562 fn longer(a: S, b: S) -> S {
1563 if a.len() > b.len() {
1570 pub fn opt_s(a: S, b: S, c: S, d: S) -> R {
1571 stable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1573 pub fn multi_s(a: S, b: S, c: S, d: S) -> R {
1574 stable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1576 pub fn flag_s(a: S, b: S, c: S) -> R {
1577 stable(longer(a, b), move |opts| opts.optflag(a, b, c))
1579 pub fn flagopt_s(a: S, b: S, c: S, d: S) -> R {
1580 stable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1582 pub fn flagmulti_s(a: S, b: S, c: S) -> R {
1583 stable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1586 pub fn opt(a: S, b: S, c: S, d: S) -> R {
1587 unstable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1589 pub fn multi(a: S, b: S, c: S, d: S) -> R {
1590 unstable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1592 pub fn flag(a: S, b: S, c: S) -> R {
1593 unstable(longer(a, b), move |opts| opts.optflag(a, b, c))
1595 pub fn flagopt(a: S, b: S, c: S, d: S) -> R {
1596 unstable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1598 pub fn flagmulti(a: S, b: S, c: S) -> R {
1599 unstable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1603 /// Returns the "short" subset of the rustc command line options,
1604 /// including metadata for each option, such as whether the option is
1605 /// part of the stable long-term interface for rustc.
1606 pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
1608 opt::flag_s("h", "help", "Display this message"),
1609 opt::multi_s("", "cfg", "Configure the compilation environment", "SPEC"),
1613 "Add a directory to the library search path. The
1614 optional KIND can be one of dependency, crate, native,
1615 framework or all (the default).",
1621 "Link the generated crate(s) to the specified native
1622 library NAME. The optional KIND can be one of
1623 static, dylib, or framework. If omitted, dylib is
1630 "Comma separated list of types of crates
1631 for the compiler to emit",
1632 "[bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]",
1637 "Specify the name of the crate being built",
1643 "Comma separated list of types of output for \
1644 the compiler to emit",
1645 "[asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]",
1650 "Comma separated list of compiler information to \
1652 "[crate-name|file-names|sysroot|cfg|target-list|\
1653 target-cpus|target-features|relocation-models|\
1654 code-models|tls-models|target-spec-json|native-static-libs]",
1656 opt::flagmulti_s("g", "", "Equivalent to -C debuginfo=2"),
1657 opt::flagmulti_s("O", "", "Equivalent to -C opt-level=2"),
1658 opt::opt_s("o", "", "Write output to <filename>", "FILENAME"),
1662 "Write output to compiler-chosen filename \
1669 "Provide a detailed explanation of an error \
1673 opt::flag_s("", "test", "Build a test harness"),
1677 "Target triple for which the code is compiled",
1680 opt::multi_s("W", "warn", "Set lint warnings", "OPT"),
1681 opt::multi_s("A", "allow", "Set lint allowed", "OPT"),
1682 opt::multi_s("D", "deny", "Set lint denied", "OPT"),
1683 opt::multi_s("F", "forbid", "Set lint forbidden", "OPT"),
1687 "Set the most restrictive lint level. \
1688 More restrictive lints are capped at this \
1692 opt::multi_s("C", "codegen", "Set a codegen option", "OPT[=VALUE]"),
1693 opt::flag_s("V", "version", "Print version info and exit"),
1694 opt::flag_s("v", "verbose", "Use verbose output"),
1698 /// Returns all rustc command line options, including metadata for
1699 /// each option, such as whether the option is part of the stable
1700 /// long-term interface for rustc.
1701 pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
1702 let mut opts = rustc_short_optgroups();
1707 "Specify where an external rust library is located",
1710 opt::opt_s("", "sysroot", "Override the system root", "PATH"),
1711 opt::multi("Z", "", "Set internal debugging options", "FLAG"),
1715 "How errors and other messages are produced",
1721 "Configure coloring of output:
1722 auto = colorize, if output goes to a tty (default);
1723 always = always colorize output;
1724 never = never colorize output",
1725 "auto|always|never",
1730 "Pretty-print the input instead of compiling;
1731 valid types are: `normal` (un-annotated source),
1732 `expanded` (crates expanded), or
1733 `expanded,identified` (fully parenthesized, AST nodes with IDs).",
1739 "Specify which edition of the compiler to use when compiling code.",
1744 "remap-path-prefix",
1745 "Remap source names in all output (compiler messages and output files)",
1752 // Convert strings provided as --cfg [cfgspec] into a crate_cfg
1753 pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> ast::CrateConfig {
1757 let sess = parse::ParseSess::new(FilePathMapping::empty());
1758 let filename = FileName::cfg_spec_source_code(&s);
1759 let mut parser = parse::new_parser_from_source_str(&sess, filename, s.to_string());
1761 macro_rules! error {($reason: expr) => {
1762 early_error(ErrorOutputType::default(),
1763 &format!(concat!("invalid `--cfg` argument: `{}` (", $reason, ")"), s));
1766 match &mut parser.parse_meta_item() {
1767 Ok(meta_item) if parser.token == token::Eof => {
1768 if meta_item.ident.segments.len() != 1 {
1769 error!("argument key must be an identifier");
1771 match &meta_item.node {
1772 MetaItemKind::List(..) => {
1773 error!(r#"expected `key` or `key="value"`"#);
1775 MetaItemKind::NameValue(lit) if !lit.node.is_str() => {
1776 error!("argument value must be a string");
1778 MetaItemKind::NameValue(..) | MetaItemKind::Word => {
1779 return (meta_item.name(), meta_item.value_str());
1784 Err(err) => err.cancel(),
1787 error!(r#"expected `key` or `key="value"`"#);
1789 .collect::<ast::CrateConfig>()
1792 pub fn get_cmd_lint_options(matches: &getopts::Matches,
1793 error_format: ErrorOutputType)
1794 -> (Vec<(String, lint::Level)>, bool, Option<lint::Level>) {
1795 let mut lint_opts = vec![];
1796 let mut describe_lints = false;
1798 for &level in &[lint::Allow, lint::Warn, lint::Deny, lint::Forbid] {
1799 for lint_name in matches.opt_strs(level.as_str()) {
1800 if lint_name == "help" {
1801 describe_lints = true;
1803 lint_opts.push((lint_name.replace("-", "_"), level));
1808 let lint_cap = matches.opt_str("cap-lints").map(|cap| {
1809 lint::Level::from_str(&cap)
1810 .unwrap_or_else(|| early_error(error_format, &format!("unknown lint level: `{}`", cap)))
1812 (lint_opts, describe_lints, lint_cap)
1815 pub fn build_session_options_and_crate_config(
1816 matches: &getopts::Matches,
1817 ) -> (Options, ast::CrateConfig) {
1818 let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
1819 Some("auto") => ColorConfig::Auto,
1820 Some("always") => ColorConfig::Always,
1821 Some("never") => ColorConfig::Never,
1823 None => ColorConfig::Auto,
1825 Some(arg) => early_error(
1826 ErrorOutputType::default(),
1828 "argument for --color must be auto, \
1829 always or never (instead was `{}`)",
1835 let edition = match matches.opt_str("edition") {
1836 Some(arg) => Edition::from_str(&arg).unwrap_or_else(|_|
1838 ErrorOutputType::default(),
1840 "argument for --edition must be one of: \
1841 {}. (instead was `{}`)",
1847 None => DEFAULT_EDITION,
1850 if !edition.is_stable() && !nightly_options::is_nightly_build() {
1852 ErrorOutputType::default(),
1854 "Edition {} is unstable and only \
1855 available for nightly builds of rustc.",
1862 // We need the opts_present check because the driver will send us Matches
1863 // with only stable options if no unstable options are used. Since error-format
1864 // is unstable, it will not be present. We have to use opts_present not
1865 // opt_present because the latter will panic.
1866 let error_format = if matches.opts_present(&["error-format".to_owned()]) {
1867 match matches.opt_str("error-format").as_ref().map(|s| &s[..]) {
1868 Some("human") => ErrorOutputType::HumanReadable(color),
1869 Some("json") => ErrorOutputType::Json(false),
1870 Some("pretty-json") => ErrorOutputType::Json(true),
1871 Some("short") => ErrorOutputType::Short(color),
1872 None => ErrorOutputType::HumanReadable(color),
1874 Some(arg) => early_error(
1875 ErrorOutputType::HumanReadable(color),
1877 "argument for --error-format must be `human`, `json` or \
1878 `short` (instead was `{}`)",
1884 ErrorOutputType::HumanReadable(color)
1887 let unparsed_crate_types = matches.opt_strs("crate-type");
1888 let crate_types = parse_crate_types_from_list(unparsed_crate_types)
1889 .unwrap_or_else(|e| early_error(error_format, &e[..]));
1891 let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
1893 let mut debugging_opts = build_debugging_options(matches, error_format);
1895 if !debugging_opts.unstable_options && error_format == ErrorOutputType::Json(true) {
1897 ErrorOutputType::Json(false),
1898 "--error-format=pretty-json is unstable",
1902 if debugging_opts.pgo_gen.is_some() && !debugging_opts.pgo_use.is_empty() {
1905 "options `-Z pgo-gen` and `-Z pgo-use` are exclusive",
1909 let mut output_types = BTreeMap::new();
1910 if !debugging_opts.parse_only {
1911 for list in matches.opt_strs("emit") {
1912 for output_type in list.split(',') {
1913 let mut parts = output_type.splitn(2, '=');
1914 let shorthand = parts.next().unwrap();
1915 let output_type = OutputType::from_shorthand(shorthand).unwrap_or_else(||
1919 "unknown emission type: `{}` - expected one of: {}",
1921 OutputType::shorthands_display(),
1925 let path = parts.next().map(PathBuf::from);
1926 output_types.insert(output_type, path);
1930 if output_types.is_empty() {
1931 output_types.insert(OutputType::Exe, None);
1934 let mut cg = build_codegen_options(matches, error_format);
1935 let mut codegen_units = cg.codegen_units;
1936 let mut disable_thinlto = false;
1938 // Issue #30063: if user requests llvm-related output to one
1939 // particular path, disable codegen-units.
1940 let incompatible: Vec<_> = output_types
1942 .map(|ot_path| ot_path.0)
1943 .filter(|ot| !ot.is_compatible_with_codegen_units_and_single_output_file())
1944 .map(|ot| ot.shorthand())
1946 if !incompatible.is_empty() {
1947 match codegen_units {
1948 Some(n) if n > 1 => {
1949 if matches.opt_present("o") {
1950 for ot in &incompatible {
1954 "--emit={} with -o incompatible with \
1955 -C codegen-units=N for N > 1",
1960 early_warn(error_format, "resetting to default -C codegen-units=1");
1961 codegen_units = Some(1);
1962 disable_thinlto = true;
1966 codegen_units = Some(1);
1967 disable_thinlto = true;
1972 if debugging_opts.query_threads == Some(0) {
1975 "Value for query threads must be a positive nonzero integer",
1979 if debugging_opts.query_threads.unwrap_or(1) > 1 && debugging_opts.fuel.is_some() {
1982 "Optimization fuel is incompatible with multiple query threads",
1986 if codegen_units == Some(0) {
1989 "Value for codegen units must be a positive nonzero integer",
1993 let incremental = match (&debugging_opts.incremental, &cg.incremental) {
1994 (&Some(ref path1), &Some(ref path2)) => {
1999 "conflicting paths for `-Z incremental` and \
2000 `-C incremental` specified: {} versus {}",
2008 (&Some(ref path), &None) => Some(path),
2009 (&None, &Some(ref path)) => Some(path),
2010 (&None, &None) => None,
2011 }.map(|m| PathBuf::from(m));
2013 if debugging_opts.profile && incremental.is_some() {
2016 "can't instrument with gcov profiling when compiling incrementally",
2020 let mut prints = Vec::<PrintRequest>::new();
2021 if cg.target_cpu.as_ref().map_or(false, |s| s == "help") {
2022 prints.push(PrintRequest::TargetCPUs);
2023 cg.target_cpu = None;
2025 if cg.target_feature == "help" {
2026 prints.push(PrintRequest::TargetFeatures);
2027 cg.target_feature = String::new();
2029 if cg.relocation_model.as_ref().map_or(false, |s| s == "help") {
2030 prints.push(PrintRequest::RelocationModels);
2031 cg.relocation_model = None;
2033 if cg.code_model.as_ref().map_or(false, |s| s == "help") {
2034 prints.push(PrintRequest::CodeModels);
2035 cg.code_model = None;
2040 .map_or(false, |s| s == "help")
2042 prints.push(PrintRequest::TlsModels);
2043 debugging_opts.tls_model = None;
2048 let sysroot_opt = matches.opt_str("sysroot").map(|m| PathBuf::from(&m));
2049 let target_triple = if let Some(target) = matches.opt_str("target") {
2050 if target.ends_with(".json") {
2051 let path = Path::new(&target);
2052 TargetTriple::from_path(&path).unwrap_or_else(|_|
2053 early_error(error_format, &format!("target file {:?} does not exist", path)))
2055 TargetTriple::TargetTriple(target)
2058 TargetTriple::from_triple(host_triple())
2061 if matches.opt_present("O") {
2062 if cg.opt_level.is_some() {
2063 early_error(error_format, "-O and -C opt-level both provided");
2067 match cg.opt_level.as_ref().map(String::as_ref) {
2068 None => OptLevel::No,
2069 Some("0") => OptLevel::No,
2070 Some("1") => OptLevel::Less,
2071 Some("2") => OptLevel::Default,
2072 Some("3") => OptLevel::Aggressive,
2073 Some("s") => OptLevel::Size,
2074 Some("z") => OptLevel::SizeMin,
2079 "optimization level needs to be \
2080 between 0-3, s or z (instead was `{}`)",
2088 let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);
2089 let debuginfo = if matches.opt_present("g") {
2090 if cg.debuginfo.is_some() {
2091 early_error(error_format, "-g and -C debuginfo both provided");
2095 match cg.debuginfo {
2096 None | Some(0) => DebugInfo::None,
2097 Some(1) => DebugInfo::Limited,
2098 Some(2) => DebugInfo::Full,
2103 "debug info level needs to be between \
2104 0-2 (instead was `{}`)",
2112 let mut search_paths = SearchPaths::new();
2113 for s in &matches.opt_strs("L") {
2114 search_paths.add_path(&s[..], error_format);
2121 // Parse string of the form "[KIND=]lib[:new_name]",
2122 // where KIND is one of "dylib", "framework", "static".
2123 let mut parts = s.splitn(2, '=');
2124 let kind = parts.next().unwrap();
2125 let (name, kind) = match (parts.next(), kind) {
2126 (None, name) => (name, None),
2127 (Some(name), "dylib") => (name, Some(cstore::NativeUnknown)),
2128 (Some(name), "framework") => (name, Some(cstore::NativeFramework)),
2129 (Some(name), "static") => (name, Some(cstore::NativeStatic)),
2130 (Some(name), "static-nobundle") => (name, Some(cstore::NativeStaticNobundle)),
2135 "unknown library kind `{}`, expected \
2136 one of dylib, framework, or static",
2142 if kind == Some(cstore::NativeStaticNobundle) && !nightly_options::is_nightly_build() {
2146 "the library kind 'static-nobundle' is only \
2147 accepted on the nightly compiler"
2151 let mut name_parts = name.splitn(2, ':');
2152 let name = name_parts.next().unwrap();
2153 let new_name = name_parts.next();
2154 (name.to_owned(), new_name.map(|n| n.to_owned()), kind)
2158 let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
2159 let test = matches.opt_present("test");
2161 let is_unstable_enabled = nightly_options::is_unstable_enabled(matches);
2163 prints.extend(matches.opt_strs("print").into_iter().map(|s| match &*s {
2164 "crate-name" => PrintRequest::CrateName,
2165 "file-names" => PrintRequest::FileNames,
2166 "sysroot" => PrintRequest::Sysroot,
2167 "cfg" => PrintRequest::Cfg,
2168 "target-list" => PrintRequest::TargetList,
2169 "target-cpus" => PrintRequest::TargetCPUs,
2170 "target-features" => PrintRequest::TargetFeatures,
2171 "relocation-models" => PrintRequest::RelocationModels,
2172 "code-models" => PrintRequest::CodeModels,
2173 "tls-models" => PrintRequest::TlsModels,
2174 "native-static-libs" => PrintRequest::NativeStaticLibs,
2175 "target-spec-json" => {
2176 if is_unstable_enabled {
2177 PrintRequest::TargetSpec
2181 "the `-Z unstable-options` flag must also be passed to \
2182 enable the target-spec-json print option",
2186 req => early_error(error_format, &format!("unknown print request `{}`", req)),
2189 let borrowck_mode = match debugging_opts.borrowck.as_ref().map(|s| &s[..]) {
2190 None | Some("ast") => BorrowckMode::Ast,
2191 Some("mir") => BorrowckMode::Mir,
2192 Some("compare") => BorrowckMode::Compare,
2193 Some("migrate") => BorrowckMode::Migrate,
2194 Some(m) => early_error(error_format, &format!("unknown borrowck mode `{}`", m)),
2197 if !cg.remark.is_empty() && debuginfo == DebugInfo::None {
2200 "-C remark requires \"-C debuginfo=n\" to show source locations",
2204 let mut externs: BTreeMap<_, BTreeSet<_>> = BTreeMap::new();
2205 for arg in &matches.opt_strs("extern") {
2206 let mut parts = arg.splitn(2, '=');
2207 let name = parts.next().unwrap_or_else(||
2208 early_error(error_format, "--extern value must not be empty"));
2209 let location = parts.next().map(|s| s.to_string());
2210 if location.is_none() && !is_unstable_enabled {
2213 "the `-Z unstable-options` flag must also be passed to \
2214 enable `--extern crate_name` without `=path`",
2219 .entry(name.to_owned())
2224 let crate_name = matches.opt_str("crate-name");
2226 let remap_path_prefix = matches
2227 .opt_strs("remap-path-prefix")
2230 let mut parts = remap.rsplitn(2, '='); // reverse iterator
2231 let to = parts.next();
2232 let from = parts.next();
2234 (Some(from), Some(to)) => (PathBuf::from(from), PathBuf::from(to)),
2237 "--remap-path-prefix must contain '=' between FROM and TO",
2246 optimize: opt_level,
2251 output_types: OutputTypes(output_types),
2253 maybe_sysroot: sysroot_opt,
2262 externs: Externs(externs),
2266 unstable_features: UnstableFeatures::from_environment(),
2268 actually_rustdoc: false,
2269 cli_forced_codegen_units: codegen_units,
2270 cli_forced_thinlto_off: disable_thinlto,
2278 pub fn parse_crate_types_from_list(list_list: Vec<String>) -> Result<Vec<CrateType>, String> {
2279 let mut crate_types: Vec<CrateType> = Vec::new();
2280 for unparsed_crate_type in &list_list {
2281 for part in unparsed_crate_type.split(',') {
2282 let new_part = match part {
2283 "lib" => default_lib_output(),
2284 "rlib" => CrateType::Rlib,
2285 "staticlib" => CrateType::Staticlib,
2286 "dylib" => CrateType::Dylib,
2287 "cdylib" => CrateType::Cdylib,
2288 "bin" => CrateType::Executable,
2289 "proc-macro" => CrateType::ProcMacro,
2290 _ => return Err(format!("unknown crate type: `{}`", part))
2292 if !crate_types.contains(&new_part) {
2293 crate_types.push(new_part)
2301 pub mod nightly_options {
2303 use syntax::feature_gate::UnstableFeatures;
2304 use super::{ErrorOutputType, OptionStability, RustcOptGroup};
2305 use session::early_error;
2307 pub fn is_unstable_enabled(matches: &getopts::Matches) -> bool {
2312 .any(|x| *x == "unstable-options")
2315 pub fn is_nightly_build() -> bool {
2316 UnstableFeatures::from_environment().is_nightly_build()
2319 pub fn check_nightly_options(matches: &getopts::Matches, flags: &[RustcOptGroup]) {
2320 let has_z_unstable_option = matches
2323 .any(|x| *x == "unstable-options");
2324 let really_allows_unstable_options =
2325 UnstableFeatures::from_environment().is_nightly_build();
2327 for opt in flags.iter() {
2328 if opt.stability == OptionStability::Stable {
2331 if !matches.opt_present(opt.name) {
2334 if opt.name != "Z" && !has_z_unstable_option {
2336 ErrorOutputType::default(),
2338 "the `-Z unstable-options` flag must also be passed to enable \
2344 if really_allows_unstable_options {
2347 match opt.stability {
2348 OptionStability::Unstable => {
2350 "the option `{}` is only accepted on the \
2354 early_error(ErrorOutputType::default(), &msg);
2356 OptionStability::Stable => {}
2362 impl fmt::Display for CrateType {
2363 fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
2365 CrateType::Executable => "bin".fmt(f),
2366 CrateType::Dylib => "dylib".fmt(f),
2367 CrateType::Rlib => "rlib".fmt(f),
2368 CrateType::Staticlib => "staticlib".fmt(f),
2369 CrateType::Cdylib => "cdylib".fmt(f),
2370 CrateType::ProcMacro => "proc-macro".fmt(f),
2375 /// Command-line arguments passed to the compiler have to be incorporated with
2376 /// the dependency tracking system for incremental compilation. This module
2377 /// provides some utilities to make this more convenient.
2379 /// The values of all command-line arguments that are relevant for dependency
2380 /// tracking are hashed into a single value that determines whether the
2381 /// incremental compilation cache can be re-used or not. This hashing is done
2382 /// via the DepTrackingHash trait defined below, since the standard Hash
2383 /// implementation might not be suitable (e.g., arguments are stored in a Vec,
2384 /// the hash of which is order dependent, but we might not want the order of
2385 /// arguments to make a difference for the hash).
2387 /// However, since the value provided by Hash::hash often *is* suitable,
2388 /// especially for primitive types, there is the
2389 /// impl_dep_tracking_hash_via_hash!() macro that allows to simply reuse the
2390 /// Hash implementation for DepTrackingHash. It's important though that
2391 /// we have an opt-in scheme here, so one is hopefully forced to think about
2392 /// how the hash should be calculated when adding a new command-line argument.
2396 use std::collections::BTreeMap;
2397 use std::hash::Hash;
2398 use std::path::PathBuf;
2399 use std::collections::hash_map::DefaultHasher;
2400 use super::{CrateType, DebugInfo, ErrorOutputType, OptLevel, OutputTypes,
2401 Passes, Sanitizer, LtoCli, CrossLangLto};
2402 use syntax::feature_gate::UnstableFeatures;
2403 use rustc_target::spec::{PanicStrategy, RelroLevel, TargetTriple};
2404 use syntax::edition::Edition;
2406 pub trait DepTrackingHash {
2407 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType);
2410 macro_rules! impl_dep_tracking_hash_via_hash {
2412 impl DepTrackingHash for $t {
2413 fn hash(&self, hasher: &mut DefaultHasher, _: ErrorOutputType) {
2414 Hash::hash(self, hasher);
2420 macro_rules! impl_dep_tracking_hash_for_sortable_vec_of {
2422 impl DepTrackingHash for Vec<$t> {
2423 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2424 let mut elems: Vec<&$t> = self.iter().collect();
2426 Hash::hash(&elems.len(), hasher);
2427 for (index, elem) in elems.iter().enumerate() {
2428 Hash::hash(&index, hasher);
2429 DepTrackingHash::hash(*elem, hasher, error_format);
2436 impl_dep_tracking_hash_via_hash!(bool);
2437 impl_dep_tracking_hash_via_hash!(usize);
2438 impl_dep_tracking_hash_via_hash!(u64);
2439 impl_dep_tracking_hash_via_hash!(String);
2440 impl_dep_tracking_hash_via_hash!(PathBuf);
2441 impl_dep_tracking_hash_via_hash!(lint::Level);
2442 impl_dep_tracking_hash_via_hash!(Option<bool>);
2443 impl_dep_tracking_hash_via_hash!(Option<usize>);
2444 impl_dep_tracking_hash_via_hash!(Option<String>);
2445 impl_dep_tracking_hash_via_hash!(Option<(String, u64)>);
2446 impl_dep_tracking_hash_via_hash!(Option<PanicStrategy>);
2447 impl_dep_tracking_hash_via_hash!(Option<RelroLevel>);
2448 impl_dep_tracking_hash_via_hash!(Option<lint::Level>);
2449 impl_dep_tracking_hash_via_hash!(Option<PathBuf>);
2450 impl_dep_tracking_hash_via_hash!(Option<cstore::NativeLibraryKind>);
2451 impl_dep_tracking_hash_via_hash!(CrateType);
2452 impl_dep_tracking_hash_via_hash!(PanicStrategy);
2453 impl_dep_tracking_hash_via_hash!(RelroLevel);
2454 impl_dep_tracking_hash_via_hash!(Passes);
2455 impl_dep_tracking_hash_via_hash!(OptLevel);
2456 impl_dep_tracking_hash_via_hash!(LtoCli);
2457 impl_dep_tracking_hash_via_hash!(DebugInfo);
2458 impl_dep_tracking_hash_via_hash!(UnstableFeatures);
2459 impl_dep_tracking_hash_via_hash!(OutputTypes);
2460 impl_dep_tracking_hash_via_hash!(cstore::NativeLibraryKind);
2461 impl_dep_tracking_hash_via_hash!(Sanitizer);
2462 impl_dep_tracking_hash_via_hash!(Option<Sanitizer>);
2463 impl_dep_tracking_hash_via_hash!(TargetTriple);
2464 impl_dep_tracking_hash_via_hash!(Edition);
2465 impl_dep_tracking_hash_via_hash!(CrossLangLto);
2467 impl_dep_tracking_hash_for_sortable_vec_of!(String);
2468 impl_dep_tracking_hash_for_sortable_vec_of!(PathBuf);
2469 impl_dep_tracking_hash_for_sortable_vec_of!(CrateType);
2470 impl_dep_tracking_hash_for_sortable_vec_of!((String, lint::Level));
2471 impl_dep_tracking_hash_for_sortable_vec_of!((
2474 Option<cstore::NativeLibraryKind>
2476 impl_dep_tracking_hash_for_sortable_vec_of!((String, u64));
2478 impl<T1, T2> DepTrackingHash for (T1, T2)
2480 T1: DepTrackingHash,
2481 T2: DepTrackingHash,
2483 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2484 Hash::hash(&0, hasher);
2485 DepTrackingHash::hash(&self.0, hasher, error_format);
2486 Hash::hash(&1, hasher);
2487 DepTrackingHash::hash(&self.1, hasher, error_format);
2491 impl<T1, T2, T3> DepTrackingHash for (T1, T2, T3)
2493 T1: DepTrackingHash,
2494 T2: DepTrackingHash,
2495 T3: DepTrackingHash,
2497 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2498 Hash::hash(&0, hasher);
2499 DepTrackingHash::hash(&self.0, hasher, error_format);
2500 Hash::hash(&1, hasher);
2501 DepTrackingHash::hash(&self.1, hasher, error_format);
2502 Hash::hash(&2, hasher);
2503 DepTrackingHash::hash(&self.2, hasher, error_format);
2507 // This is a stable hash because BTreeMap is a sorted container
2509 sub_hashes: BTreeMap<&'static str, &dyn DepTrackingHash>,
2510 hasher: &mut DefaultHasher,
2511 error_format: ErrorOutputType,
2513 for (key, sub_hash) in sub_hashes {
2514 // Using Hash::hash() instead of DepTrackingHash::hash() is fine for
2515 // the keys, as they are just plain strings
2516 Hash::hash(&key.len(), hasher);
2517 Hash::hash(key, hasher);
2518 sub_hash.hash(hasher, error_format);
2529 use session::config::{build_configuration, build_session_options_and_crate_config};
2530 use session::config::{LtoCli, CrossLangLto};
2531 use session::build_session;
2532 use std::collections::{BTreeMap, BTreeSet};
2533 use std::iter::FromIterator;
2534 use std::path::PathBuf;
2535 use super::{Externs, OutputType, OutputTypes};
2536 use rustc_target::spec::{PanicStrategy, RelroLevel};
2537 use syntax::symbol::Symbol;
2538 use syntax::edition::{Edition, DEFAULT_EDITION};
2542 fn optgroups() -> getopts::Options {
2543 let mut opts = getopts::Options::new();
2544 for group in super::rustc_optgroups() {
2545 (group.apply)(&mut opts);
2550 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
2551 BTreeMap::from_iter(entries.into_iter())
2554 fn mk_set<V: Ord>(entries: Vec<V>) -> BTreeSet<V> {
2555 BTreeSet::from_iter(entries.into_iter())
2558 // When the user supplies --test we should implicitly supply --cfg test
2560 fn test_switch_implies_cfg_test() {
2561 syntax::with_globals(|| {
2562 let matches = &match optgroups().parse(&["--test".to_string()]) {
2564 Err(f) => panic!("test_switch_implies_cfg_test: {}", f),
2566 let registry = errors::registry::Registry::new(&[]);
2567 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2568 let sess = build_session(sessopts, None, registry);
2569 let cfg = build_configuration(&sess, cfg);
2570 assert!(cfg.contains(&(Symbol::intern("test"), None)));
2574 // When the user supplies --test and --cfg test, don't implicitly add
2575 // another --cfg test
2577 fn test_switch_implies_cfg_test_unless_cfg_test() {
2578 syntax::with_globals(|| {
2579 let matches = &match optgroups().parse(&["--test".to_string(),
2580 "--cfg=test".to_string()]) {
2582 Err(f) => panic!("test_switch_implies_cfg_test_unless_cfg_test: {}", f),
2584 let registry = errors::registry::Registry::new(&[]);
2585 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2586 let sess = build_session(sessopts, None, registry);
2587 let cfg = build_configuration(&sess, cfg);
2588 let mut test_items = cfg.iter().filter(|&&(name, _)| name == "test");
2589 assert!(test_items.next().is_some());
2590 assert!(test_items.next().is_none());
2595 fn test_can_print_warnings() {
2596 syntax::with_globals(|| {
2597 let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
2598 let registry = errors::registry::Registry::new(&[]);
2599 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2600 let sess = build_session(sessopts, None, registry);
2601 assert!(!sess.diagnostic().flags.can_emit_warnings);
2604 syntax::with_globals(|| {
2605 let matches = optgroups()
2606 .parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()])
2608 let registry = errors::registry::Registry::new(&[]);
2609 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2610 let sess = build_session(sessopts, None, registry);
2611 assert!(sess.diagnostic().flags.can_emit_warnings);
2614 syntax::with_globals(|| {
2615 let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
2616 let registry = errors::registry::Registry::new(&[]);
2617 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2618 let sess = build_session(sessopts, None, registry);
2619 assert!(sess.diagnostic().flags.can_emit_warnings);
2624 fn test_output_types_tracking_hash_different_paths() {
2625 let mut v1 = Options::default();
2626 let mut v2 = Options::default();
2627 let mut v3 = Options::default();
2630 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("./some/thing")))]);
2632 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("/some/thing")))]);
2633 v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
2635 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2636 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2637 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2640 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2641 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2642 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2646 fn test_output_types_tracking_hash_different_construction_order() {
2647 let mut v1 = Options::default();
2648 let mut v2 = Options::default();
2650 v1.output_types = OutputTypes::new(&[
2651 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2652 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2655 v2.output_types = OutputTypes::new(&[
2656 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2657 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2660 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2663 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2667 fn test_externs_tracking_hash_different_construction_order() {
2668 let mut v1 = Options::default();
2669 let mut v2 = Options::default();
2670 let mut v3 = Options::default();
2672 v1.externs = Externs::new(mk_map(vec![
2675 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2679 mk_set(vec![Some(String::from("e")), Some(String::from("f"))]),
2683 v2.externs = Externs::new(mk_map(vec![
2686 mk_set(vec![Some(String::from("e")), Some(String::from("f"))]),
2690 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2694 v3.externs = Externs::new(mk_map(vec![
2697 mk_set(vec![Some(String::from("b")), Some(String::from("c"))]),
2701 mk_set(vec![Some(String::from("f")), Some(String::from("e"))]),
2705 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2706 assert_eq!(v1.dep_tracking_hash(), v3.dep_tracking_hash());
2707 assert_eq!(v2.dep_tracking_hash(), v3.dep_tracking_hash());
2710 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2711 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2712 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2716 fn test_lints_tracking_hash_different_values() {
2717 let mut v1 = Options::default();
2718 let mut v2 = Options::default();
2719 let mut v3 = Options::default();
2721 v1.lint_opts = vec![
2722 (String::from("a"), lint::Allow),
2723 (String::from("b"), lint::Warn),
2724 (String::from("c"), lint::Deny),
2725 (String::from("d"), lint::Forbid),
2728 v2.lint_opts = vec![
2729 (String::from("a"), lint::Allow),
2730 (String::from("b"), lint::Warn),
2731 (String::from("X"), lint::Deny),
2732 (String::from("d"), lint::Forbid),
2735 v3.lint_opts = vec![
2736 (String::from("a"), lint::Allow),
2737 (String::from("b"), lint::Warn),
2738 (String::from("c"), lint::Forbid),
2739 (String::from("d"), lint::Deny),
2742 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2743 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2744 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2747 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2748 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2749 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2753 fn test_lints_tracking_hash_different_construction_order() {
2754 let mut v1 = Options::default();
2755 let mut v2 = Options::default();
2757 v1.lint_opts = vec![
2758 (String::from("a"), lint::Allow),
2759 (String::from("b"), lint::Warn),
2760 (String::from("c"), lint::Deny),
2761 (String::from("d"), lint::Forbid),
2764 v2.lint_opts = vec![
2765 (String::from("a"), lint::Allow),
2766 (String::from("c"), lint::Deny),
2767 (String::from("b"), lint::Warn),
2768 (String::from("d"), lint::Forbid),
2771 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2774 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2775 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2779 fn test_search_paths_tracking_hash_different_order() {
2780 let mut v1 = Options::default();
2781 let mut v2 = Options::default();
2782 let mut v3 = Options::default();
2783 let mut v4 = Options::default();
2787 .add_path("native=abc", super::ErrorOutputType::Json(false));
2789 .add_path("crate=def", super::ErrorOutputType::Json(false));
2791 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2793 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2795 .add_path("all=mno", super::ErrorOutputType::Json(false));
2798 .add_path("native=abc", super::ErrorOutputType::Json(false));
2800 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2802 .add_path("crate=def", super::ErrorOutputType::Json(false));
2804 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2806 .add_path("all=mno", super::ErrorOutputType::Json(false));
2809 .add_path("crate=def", super::ErrorOutputType::Json(false));
2811 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2813 .add_path("native=abc", super::ErrorOutputType::Json(false));
2815 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2817 .add_path("all=mno", super::ErrorOutputType::Json(false));
2820 .add_path("all=mno", super::ErrorOutputType::Json(false));
2822 .add_path("native=abc", super::ErrorOutputType::Json(false));
2824 .add_path("crate=def", super::ErrorOutputType::Json(false));
2826 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2828 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2830 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2831 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2832 assert!(v1.dep_tracking_hash() == v4.dep_tracking_hash());
2835 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2836 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2837 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2838 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2842 fn test_native_libs_tracking_hash_different_values() {
2843 let mut v1 = Options::default();
2844 let mut v2 = Options::default();
2845 let mut v3 = Options::default();
2846 let mut v4 = Options::default();
2850 (String::from("a"), None, Some(cstore::NativeStatic)),
2851 (String::from("b"), None, Some(cstore::NativeFramework)),
2852 (String::from("c"), None, Some(cstore::NativeUnknown)),
2857 (String::from("a"), None, Some(cstore::NativeStatic)),
2858 (String::from("X"), None, Some(cstore::NativeFramework)),
2859 (String::from("c"), None, Some(cstore::NativeUnknown)),
2864 (String::from("a"), None, Some(cstore::NativeStatic)),
2865 (String::from("b"), None, Some(cstore::NativeStatic)),
2866 (String::from("c"), None, Some(cstore::NativeUnknown)),
2871 (String::from("a"), None, Some(cstore::NativeStatic)),
2874 Some(String::from("X")),
2875 Some(cstore::NativeFramework),
2877 (String::from("c"), None, Some(cstore::NativeUnknown)),
2880 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2881 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2882 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
2885 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2886 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2887 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2888 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2892 fn test_native_libs_tracking_hash_different_order() {
2893 let mut v1 = Options::default();
2894 let mut v2 = Options::default();
2895 let mut v3 = Options::default();
2899 (String::from("a"), None, Some(cstore::NativeStatic)),
2900 (String::from("b"), None, Some(cstore::NativeFramework)),
2901 (String::from("c"), None, Some(cstore::NativeUnknown)),
2905 (String::from("b"), None, Some(cstore::NativeFramework)),
2906 (String::from("a"), None, Some(cstore::NativeStatic)),
2907 (String::from("c"), None, Some(cstore::NativeUnknown)),
2911 (String::from("c"), None, Some(cstore::NativeUnknown)),
2912 (String::from("a"), None, Some(cstore::NativeStatic)),
2913 (String::from("b"), None, Some(cstore::NativeFramework)),
2916 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2917 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2918 assert!(v2.dep_tracking_hash() == v3.dep_tracking_hash());
2921 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2922 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2923 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2927 fn test_codegen_options_tracking_hash() {
2928 let reference = Options::default();
2929 let mut opts = Options::default();
2931 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
2932 opts.cg.ar = Some(String::from("abc"));
2933 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2935 opts.cg.linker = Some(PathBuf::from("linker"));
2936 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2938 opts.cg.link_args = Some(vec![String::from("abc"), String::from("def")]);
2939 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2941 opts.cg.link_dead_code = true;
2942 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2944 opts.cg.rpath = true;
2945 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2947 opts.cg.extra_filename = String::from("extra-filename");
2948 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2950 opts.cg.codegen_units = Some(42);
2951 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2953 opts.cg.remark = super::Passes::Some(vec![String::from("pass1"), String::from("pass2")]);
2954 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2956 opts.cg.save_temps = true;
2957 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2959 opts.cg.incremental = Some(String::from("abc"));
2960 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2962 // Make sure changing a [TRACKED] option changes the hash
2963 opts = reference.clone();
2964 opts.cg.lto = LtoCli::Fat;
2965 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2967 opts = reference.clone();
2968 opts.cg.target_cpu = Some(String::from("abc"));
2969 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2971 opts = reference.clone();
2972 opts.cg.target_feature = String::from("all the features, all of them");
2973 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2975 opts = reference.clone();
2976 opts.cg.passes = vec![String::from("1"), String::from("2")];
2977 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2979 opts = reference.clone();
2980 opts.cg.llvm_args = vec![String::from("1"), String::from("2")];
2981 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2983 opts = reference.clone();
2984 opts.cg.overflow_checks = Some(true);
2985 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2987 opts = reference.clone();
2988 opts.cg.no_prepopulate_passes = true;
2989 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2991 opts = reference.clone();
2992 opts.cg.no_vectorize_loops = true;
2993 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2995 opts = reference.clone();
2996 opts.cg.no_vectorize_slp = true;
2997 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2999 opts = reference.clone();
3000 opts.cg.soft_float = true;
3001 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3003 opts = reference.clone();
3004 opts.cg.prefer_dynamic = true;
3005 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3007 opts = reference.clone();
3008 opts.cg.no_integrated_as = true;
3009 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3011 opts = reference.clone();
3012 opts.cg.no_redzone = Some(true);
3013 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3015 opts = reference.clone();
3016 opts.cg.relocation_model = Some(String::from("relocation model"));
3017 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3019 opts = reference.clone();
3020 opts.cg.code_model = Some(String::from("code model"));
3021 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3023 opts = reference.clone();
3024 opts.debugging_opts.tls_model = Some(String::from("tls model"));
3025 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3027 opts = reference.clone();
3028 opts.debugging_opts.pgo_gen = Some(String::from("abc"));
3029 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3031 opts = reference.clone();
3032 opts.debugging_opts.pgo_use = String::from("abc");
3033 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3035 opts = reference.clone();
3036 opts.cg.metadata = vec![String::from("A"), String::from("B")];
3037 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3039 opts = reference.clone();
3040 opts.cg.debuginfo = Some(0xdeadbeef);
3041 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3043 opts = reference.clone();
3044 opts.cg.debuginfo = Some(0xba5eba11);
3045 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3047 opts = reference.clone();
3048 opts.cg.force_frame_pointers = Some(false);
3049 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3051 opts = reference.clone();
3052 opts.cg.debug_assertions = Some(true);
3053 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3055 opts = reference.clone();
3056 opts.cg.inline_threshold = Some(0xf007ba11);
3057 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3059 opts = reference.clone();
3060 opts.cg.panic = Some(PanicStrategy::Abort);
3061 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3065 fn test_debugging_options_tracking_hash() {
3066 let reference = Options::default();
3067 let mut opts = Options::default();
3069 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
3070 opts.debugging_opts.verbose = true;
3071 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3072 opts.debugging_opts.time_passes = true;
3073 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3074 opts.debugging_opts.count_llvm_insns = true;
3075 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3076 opts.debugging_opts.time_llvm_passes = true;
3077 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3078 opts.debugging_opts.input_stats = true;
3079 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3080 opts.debugging_opts.codegen_stats = true;
3081 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3082 opts.debugging_opts.borrowck_stats = true;
3083 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3084 opts.debugging_opts.meta_stats = true;
3085 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3086 opts.debugging_opts.print_link_args = true;
3087 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3088 opts.debugging_opts.print_llvm_passes = true;
3089 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3090 opts.debugging_opts.ast_json = true;
3091 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3092 opts.debugging_opts.ast_json_noexpand = true;
3093 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3094 opts.debugging_opts.ls = true;
3095 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3096 opts.debugging_opts.save_analysis = true;
3097 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3098 opts.debugging_opts.flowgraph_print_loans = true;
3099 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3100 opts.debugging_opts.flowgraph_print_moves = true;
3101 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3102 opts.debugging_opts.flowgraph_print_assigns = true;
3103 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3104 opts.debugging_opts.flowgraph_print_all = true;
3105 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3106 opts.debugging_opts.print_region_graph = true;
3107 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3108 opts.debugging_opts.parse_only = true;
3109 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3110 opts.debugging_opts.incremental = Some(String::from("abc"));
3111 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3112 opts.debugging_opts.dump_dep_graph = true;
3113 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3114 opts.debugging_opts.query_dep_graph = true;
3115 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3116 opts.debugging_opts.no_analysis = true;
3117 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3118 opts.debugging_opts.unstable_options = true;
3119 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3120 opts.debugging_opts.trace_macros = true;
3121 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3122 opts.debugging_opts.keep_hygiene_data = true;
3123 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3124 opts.debugging_opts.keep_ast = true;
3125 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3126 opts.debugging_opts.print_mono_items = Some(String::from("abc"));
3127 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3128 opts.debugging_opts.dump_mir = Some(String::from("abc"));
3129 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3130 opts.debugging_opts.dump_mir_dir = String::from("abc");
3131 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3132 opts.debugging_opts.dump_mir_graphviz = true;
3133 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3135 // Make sure changing a [TRACKED] option changes the hash
3136 opts = reference.clone();
3137 opts.debugging_opts.asm_comments = true;
3138 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3140 opts = reference.clone();
3141 opts.debugging_opts.verify_llvm_ir = true;
3142 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3144 opts = reference.clone();
3145 opts.debugging_opts.no_landing_pads = true;
3146 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3148 opts = reference.clone();
3149 opts.debugging_opts.fewer_names = true;
3150 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3152 opts = reference.clone();
3153 opts.debugging_opts.no_codegen = true;
3154 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3156 opts = reference.clone();
3157 opts.debugging_opts.treat_err_as_bug = true;
3158 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3160 opts = reference.clone();
3161 opts.debugging_opts.report_delayed_bugs = true;
3162 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3164 opts = reference.clone();
3165 opts.debugging_opts.continue_parse_after_error = true;
3166 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3168 opts = reference.clone();
3169 opts.debugging_opts.extra_plugins = vec![String::from("plugin1"), String::from("plugin2")];
3170 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3172 opts = reference.clone();
3173 opts.debugging_opts.force_overflow_checks = Some(true);
3174 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3176 opts = reference.clone();
3177 opts.debugging_opts.show_span = Some(String::from("abc"));
3178 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3180 opts = reference.clone();
3181 opts.debugging_opts.mir_opt_level = 3;
3182 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3184 opts = reference.clone();
3185 opts.debugging_opts.relro_level = Some(RelroLevel::Full);
3186 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3188 opts = reference.clone();
3189 opts.debugging_opts.cross_lang_lto = CrossLangLto::LinkerPluginAuto;
3190 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3194 fn test_edition_parsing() {
3195 // test default edition
3196 let options = Options::default();
3197 assert!(options.edition == DEFAULT_EDITION);
3199 let matches = optgroups()
3200 .parse(&["--edition=2018".to_string()])
3202 let (sessopts, _) = build_session_options_and_crate_config(&matches);
3203 assert!(sessopts.edition == Edition::Edition2018)