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 commandline 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 commandline arguments.
277 #[derive(Clone, Hash)]
278 pub struct Externs(BTreeMap<String, BTreeSet<String>>);
281 pub fn new(data: BTreeMap<String, BTreeSet<String>>) -> Externs {
285 pub fn get(&self, key: &str) -> Option<&BTreeSet<String>> {
289 pub fn iter<'a>(&'a self) -> BTreeMapIter<'a, String, BTreeSet<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 commandline 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) -> String {
495 Input::File(ref ifile) => ifile.file_stem().unwrap().to_str().unwrap().to_string(),
496 Input::Str { .. } => "rust_out".to_string(),
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 self.incremental.is_some() ||
650 match self.optimize {
654 OptLevel::SizeMin => true,
656 OptLevel::Aggressive => false,
663 // The type of entry function, so
664 // users can have their own entry
666 #[derive(Copy, Clone, PartialEq)]
667 pub enum EntryFnType {
672 #[derive(Copy, PartialEq, PartialOrd, Clone, Ord, Eq, Hash, Debug)]
682 #[derive(Clone, Hash)]
689 pub fn is_empty(&self) -> bool {
691 Passes::Some(ref v) => v.is_empty(),
692 Passes::All => false,
697 /// Declare a macro that will define all CodegenOptions/DebuggingOptions fields and parsers all
698 /// at once. The goal of this macro is to define an interface that can be
699 /// programmatically used by the option parser in order to initialize the struct
700 /// without hardcoding field names all over the place.
702 /// The goal is to invoke this macro once with the correct fields, and then this
703 /// macro generates all necessary code. The main gotcha of this macro is the
704 /// cgsetters module which is a bunch of generated code to parse an option into
705 /// its respective field in the struct. There are a few hand-written parsers for
706 /// parsing specific types of values in this module.
707 macro_rules! options {
708 ($struct_name:ident, $setter_name:ident, $defaultfn:ident,
709 $buildfn:ident, $prefix:expr, $outputname:expr,
710 $stat:ident, $mod_desc:ident, $mod_set:ident,
711 $($opt:ident : $t:ty = (
714 [$dep_tracking_marker:ident $(($dep_warn_val:expr, $dep_warn_text:expr))*],
719 pub struct $struct_name { $(pub $opt: $t),* }
721 pub fn $defaultfn() -> $struct_name {
722 $struct_name { $($opt: $init),* }
725 pub fn $buildfn(matches: &getopts::Matches, error_format: ErrorOutputType) -> $struct_name
727 let mut op = $defaultfn();
728 for option in matches.opt_strs($prefix) {
729 let mut iter = option.splitn(2, '=');
730 let key = iter.next().unwrap();
731 let value = iter.next();
732 let option_to_lookup = key.replace("-", "_");
733 let mut found = false;
734 for &(candidate, setter, opt_type_desc, _) in $stat {
735 if option_to_lookup != candidate { continue }
736 if !setter(&mut op, value) {
737 match (value, opt_type_desc) {
738 (Some(..), None) => {
739 early_error(error_format, &format!("{} option `{}` takes no \
740 value", $outputname, key))
742 (None, Some(type_desc)) => {
743 early_error(error_format, &format!("{0} option `{1}` requires \
744 {2} ({3} {1}=<value>)",
748 (Some(value), Some(type_desc)) => {
749 early_error(error_format, &format!("incorrect value `{}` for {} \
750 option `{}` - {} was expected",
754 (None, None) => bug!()
761 early_error(error_format, &format!("unknown {} option: `{}`",
768 impl<'a> dep_tracking::DepTrackingHash for $struct_name {
770 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
771 let mut sub_hashes = BTreeMap::new();
776 [$dep_tracking_marker $($dep_warn_val,
780 dep_tracking::stable_hash(sub_hashes, hasher, error_format);
784 pub type $setter_name = fn(&mut $struct_name, v: Option<&str>) -> bool;
785 pub const $stat: &'static [(&'static str, $setter_name,
786 Option<&'static str>, &'static str)] =
787 &[ $( (stringify!($opt), $mod_set::$opt, $mod_desc::$parse, $desc) ),* ];
789 #[allow(non_upper_case_globals, dead_code)]
791 pub const parse_bool: Option<&'static str> = None;
792 pub const parse_opt_bool: Option<&'static str> =
793 Some("one of: `y`, `yes`, `on`, `n`, `no`, or `off`");
794 pub const parse_string: Option<&'static str> = Some("a string");
795 pub const parse_string_push: Option<&'static str> = Some("a string");
796 pub const parse_pathbuf_push: Option<&'static str> = Some("a path");
797 pub const parse_opt_string: Option<&'static str> = Some("a string");
798 pub const parse_opt_pathbuf: Option<&'static str> = Some("a path");
799 pub const parse_list: Option<&'static str> = Some("a space-separated list of strings");
800 pub const parse_opt_list: Option<&'static str> = Some("a space-separated list of strings");
801 pub const parse_uint: Option<&'static str> = Some("a number");
802 pub const parse_passes: Option<&'static str> =
803 Some("a space-separated list of passes, or `all`");
804 pub const parse_opt_uint: Option<&'static str> =
806 pub const parse_panic_strategy: Option<&'static str> =
807 Some("either `panic` or `abort`");
808 pub const parse_relro_level: Option<&'static str> =
809 Some("one of: `full`, `partial`, or `off`");
810 pub const parse_sanitizer: Option<&'static str> =
811 Some("one of: `address`, `leak`, `memory` or `thread`");
812 pub const parse_linker_flavor: Option<&'static str> =
813 Some(::rustc_target::spec::LinkerFlavor::one_of());
814 pub const parse_optimization_fuel: Option<&'static str> =
815 Some("crate=integer");
816 pub const parse_unpretty: Option<&'static str> =
817 Some("`string` or `string=string`");
818 pub const parse_lto: Option<&'static str> =
819 Some("either a boolean (`yes`, `no`, `on`, `off`, etc), `thin`, \
821 pub const parse_cross_lang_lto: Option<&'static str> =
822 Some("either a boolean (`yes`, `no`, `on`, `off`, etc), \
823 or the path to the linker plugin");
828 use super::{$struct_name, Passes, Sanitizer, LtoCli, CrossLangLto};
829 use rustc_target::spec::{LinkerFlavor, PanicStrategy, RelroLevel};
830 use std::path::PathBuf;
833 pub fn $opt(cg: &mut $struct_name, v: Option<&str>) -> bool {
834 $parse(&mut cg.$opt, v)
838 fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool {
841 None => { *slot = true; true }
845 fn parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool {
849 "n" | "no" | "off" => {
852 "y" | "yes" | "on" => {
855 _ => { return false; }
860 None => { *slot = Some(true); true }
864 fn parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool {
866 Some(s) => { *slot = Some(s.to_string()); true },
871 fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, v: Option<&str>) -> bool {
873 Some(s) => { *slot = Some(PathBuf::from(s)); true },
878 fn parse_string(slot: &mut String, v: Option<&str>) -> bool {
880 Some(s) => { *slot = s.to_string(); true },
885 fn parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool {
887 Some(s) => { slot.push(s.to_string()); true },
892 fn parse_pathbuf_push(slot: &mut Vec<PathBuf>, v: Option<&str>) -> bool {
894 Some(s) => { slot.push(PathBuf::from(s)); true },
899 fn parse_list(slot: &mut Vec<String>, v: Option<&str>)
903 slot.extend(s.split_whitespace().map(|s| s.to_string()));
910 fn parse_opt_list(slot: &mut Option<Vec<String>>, v: Option<&str>)
914 let v = s.split_whitespace().map(|s| s.to_string()).collect();
922 fn parse_uint(slot: &mut usize, v: Option<&str>) -> bool {
923 match v.and_then(|s| s.parse().ok()) {
924 Some(i) => { *slot = i; true },
929 fn parse_opt_uint(slot: &mut Option<usize>, v: Option<&str>) -> bool {
931 Some(s) => { *slot = s.parse().ok(); slot.is_some() }
932 None => { *slot = None; false }
936 fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
943 let mut passes = vec![];
944 if parse_list(&mut passes, v) {
945 *slot = Passes::Some(passes);
954 fn parse_panic_strategy(slot: &mut Option<PanicStrategy>, v: Option<&str>) -> bool {
956 Some("unwind") => *slot = Some(PanicStrategy::Unwind),
957 Some("abort") => *slot = Some(PanicStrategy::Abort),
963 fn parse_relro_level(slot: &mut Option<RelroLevel>, v: Option<&str>) -> bool {
966 match s.parse::<RelroLevel>() {
967 Ok(level) => *slot = Some(level),
976 fn parse_sanitizer(slote: &mut Option<Sanitizer>, v: Option<&str>) -> bool {
978 Some("address") => *slote = Some(Sanitizer::Address),
979 Some("leak") => *slote = Some(Sanitizer::Leak),
980 Some("memory") => *slote = Some(Sanitizer::Memory),
981 Some("thread") => *slote = Some(Sanitizer::Thread),
987 fn parse_linker_flavor(slote: &mut Option<LinkerFlavor>, v: Option<&str>) -> bool {
988 match v.and_then(LinkerFlavor::from_str) {
989 Some(lf) => *slote = Some(lf),
995 fn parse_optimization_fuel(slot: &mut Option<(String, u64)>, v: Option<&str>) -> bool {
999 let parts = s.split('=').collect::<Vec<_>>();
1000 if parts.len() != 2 { return false; }
1001 let crate_name = parts[0].to_string();
1002 let fuel = parts[1].parse::<u64>();
1003 if fuel.is_err() { return false; }
1004 *slot = Some((crate_name, fuel.unwrap()));
1010 fn parse_unpretty(slot: &mut Option<String>, v: Option<&str>) -> bool {
1013 Some(s) if s.split('=').count() <= 2 => {
1014 *slot = Some(s.to_string());
1021 fn parse_lto(slot: &mut LtoCli, v: Option<&str>) -> bool {
1023 let mut bool_arg = None;
1024 if parse_opt_bool(&mut bool_arg, v) {
1025 *slot = if bool_arg.unwrap() {
1035 None => LtoCli::NoParam,
1036 Some("thin") => LtoCli::Thin,
1037 Some("fat") => LtoCli::Fat,
1038 Some(_) => return false,
1043 fn parse_cross_lang_lto(slot: &mut CrossLangLto, v: Option<&str>) -> bool {
1045 let mut bool_arg = None;
1046 if parse_opt_bool(&mut bool_arg, v) {
1047 *slot = if bool_arg.unwrap() {
1048 CrossLangLto::LinkerPluginAuto
1050 CrossLangLto::Disabled
1057 None => CrossLangLto::LinkerPluginAuto,
1058 Some(path) => CrossLangLto::LinkerPlugin(PathBuf::from(path)),
1065 options! {CodegenOptions, CodegenSetter, basic_codegen_options,
1066 build_codegen_options, "C", "codegen",
1067 CG_OPTIONS, cg_type_desc, cgsetters,
1068 ar: Option<String> = (None, parse_opt_string, [UNTRACKED],
1069 "this option is deprecated and does nothing"),
1070 linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1071 "system linker to link outputs with"),
1072 link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1073 "a single extra argument to append to the linker invocation (can be used several times)"),
1074 link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1075 "extra arguments to append to the linker invocation (space separated)"),
1076 link_dead_code: bool = (false, parse_bool, [UNTRACKED],
1077 "don't let linker strip dead code (turning it on can be used for code coverage)"),
1078 lto: LtoCli = (LtoCli::Unspecified, parse_lto, [TRACKED],
1079 "perform LLVM link-time optimizations"),
1080 target_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1081 "select target processor (rustc --print target-cpus for details)"),
1082 target_feature: String = (String::new(), parse_string, [TRACKED],
1083 "target specific attributes (rustc --print target-features for details)"),
1084 passes: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1085 "a list of extra LLVM passes to run (space separated)"),
1086 llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1087 "a list of arguments to pass to llvm (space separated)"),
1088 save_temps: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1089 "`-C save-temps` might not produce all requested temporary products \
1090 when incremental compilation is enabled.")],
1091 "save all temporary output files during compilation"),
1092 rpath: bool = (false, parse_bool, [UNTRACKED],
1093 "set rpath values in libs/exes"),
1094 overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1095 "use overflow checks for integer arithmetic"),
1096 no_prepopulate_passes: bool = (false, parse_bool, [TRACKED],
1097 "don't pre-populate the pass manager with a list of passes"),
1098 no_vectorize_loops: bool = (false, parse_bool, [TRACKED],
1099 "don't run the loop vectorization optimization passes"),
1100 no_vectorize_slp: bool = (false, parse_bool, [TRACKED],
1101 "don't run LLVM's SLP vectorization pass"),
1102 soft_float: bool = (false, parse_bool, [TRACKED],
1103 "use soft float ABI (*eabihf targets only)"),
1104 prefer_dynamic: bool = (false, parse_bool, [TRACKED],
1105 "prefer dynamic linking to static linking"),
1106 no_integrated_as: bool = (false, parse_bool, [TRACKED],
1107 "use an external assembler rather than LLVM's integrated one"),
1108 no_redzone: Option<bool> = (None, parse_opt_bool, [TRACKED],
1109 "disable the use of the redzone"),
1110 relocation_model: Option<String> = (None, parse_opt_string, [TRACKED],
1111 "choose the relocation model to use (rustc --print relocation-models for details)"),
1112 code_model: Option<String> = (None, parse_opt_string, [TRACKED],
1113 "choose the code model to use (rustc --print code-models for details)"),
1114 metadata: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1115 "metadata to mangle symbol names with"),
1116 extra_filename: String = (String::new(), parse_string, [UNTRACKED],
1117 "extra data to put in each output filename"),
1118 codegen_units: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1119 "divide crate into N units to optimize in parallel"),
1120 remark: Passes = (Passes::Some(Vec::new()), parse_passes, [UNTRACKED],
1121 "print remarks for these optimization passes (space separated, or \"all\")"),
1122 no_stack_check: bool = (false, parse_bool, [UNTRACKED],
1123 "the --no-stack-check flag is deprecated and does nothing"),
1124 debuginfo: Option<usize> = (None, parse_opt_uint, [TRACKED],
1125 "debug info emission level, 0 = no debug info, 1 = line tables only, \
1126 2 = full debug info with variable and type information"),
1127 opt_level: Option<String> = (None, parse_opt_string, [TRACKED],
1128 "optimize with possible levels 0-3, s, or z"),
1129 force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
1130 "force use of the frame pointers"),
1131 debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
1132 "explicitly enable the cfg(debug_assertions) directive"),
1133 inline_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
1134 "set the threshold for inlining a function (default: 225)"),
1135 panic: Option<PanicStrategy> = (None, parse_panic_strategy,
1136 [TRACKED], "panic strategy to compile crate with"),
1137 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1138 "enable incremental compilation"),
1141 options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
1142 build_debugging_options, "Z", "debugging",
1143 DB_OPTIONS, db_type_desc, dbsetters,
1144 codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
1145 "the backend to use"),
1146 verbose: bool = (false, parse_bool, [UNTRACKED],
1147 "in general, enable more debug printouts"),
1148 span_free_formats: bool = (false, parse_bool, [UNTRACKED],
1149 "when debug-printing compiler state, do not include spans"), // o/w tests have closure@path
1150 identify_regions: bool = (false, parse_bool, [UNTRACKED],
1151 "make unnamed regions display as '# (where # is some non-ident unique id)"),
1152 emit_end_regions: bool = (false, parse_bool, [UNTRACKED],
1153 "emit EndRegion as part of MIR; enable transforms that solely process EndRegion"),
1154 borrowck: Option<String> = (None, parse_opt_string, [UNTRACKED],
1155 "select which borrowck is used (`ast`, `mir`, `migrate`, or `compare`)"),
1156 two_phase_borrows: bool = (false, parse_bool, [UNTRACKED],
1157 "use two-phase reserved/active distinction for `&mut` borrows in MIR borrowck"),
1158 two_phase_beyond_autoref: bool = (false, parse_bool, [UNTRACKED],
1159 "when using two-phase-borrows, allow two phases even for non-autoref `&mut` borrows"),
1160 time_passes: bool = (false, parse_bool, [UNTRACKED],
1161 "measure time of each rustc pass"),
1162 count_llvm_insns: bool = (false, parse_bool,
1163 [UNTRACKED_WITH_WARNING(true,
1164 "The output generated by `-Z count_llvm_insns` might not be reliable \
1165 when used with incremental compilation")],
1166 "count where LLVM instrs originate"),
1167 time_llvm_passes: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1168 "The output of `-Z time-llvm-passes` will only reflect timings of \
1169 re-codegened modules when used with incremental compilation" )],
1170 "measure time of each LLVM pass"),
1171 input_stats: bool = (false, parse_bool, [UNTRACKED],
1172 "gather statistics about the input"),
1173 codegen_stats: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1174 "The output of `-Z codegen-stats` might not be accurate when incremental \
1175 compilation is enabled")],
1176 "gather codegen statistics"),
1177 asm_comments: bool = (false, parse_bool, [TRACKED],
1178 "generate comments into the assembly (may change behavior)"),
1179 verify_llvm_ir: bool = (false, parse_bool, [TRACKED],
1181 borrowck_stats: bool = (false, parse_bool, [UNTRACKED],
1182 "gather borrowck statistics"),
1183 no_landing_pads: bool = (false, parse_bool, [TRACKED],
1184 "omit landing pads for unwinding"),
1185 fewer_names: bool = (false, parse_bool, [TRACKED],
1186 "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR)"),
1187 meta_stats: bool = (false, parse_bool, [UNTRACKED],
1188 "gather metadata statistics"),
1189 print_link_args: bool = (false, parse_bool, [UNTRACKED],
1190 "print the arguments passed to the linker"),
1191 print_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1192 "prints the llvm optimization passes being run"),
1193 ast_json: bool = (false, parse_bool, [UNTRACKED],
1194 "print the AST as JSON and halt"),
1195 query_threads: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1196 "execute queries on a thread pool with N threads"),
1197 ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED],
1198 "print the pre-expansion AST as JSON and halt"),
1199 ls: bool = (false, parse_bool, [UNTRACKED],
1200 "list the symbols defined by a library crate"),
1201 save_analysis: bool = (false, parse_bool, [UNTRACKED],
1202 "write syntax and type analysis (in JSON format) information, in \
1203 addition to normal output"),
1204 flowgraph_print_loans: bool = (false, parse_bool, [UNTRACKED],
1205 "include loan analysis data in -Z unpretty flowgraph output"),
1206 flowgraph_print_moves: bool = (false, parse_bool, [UNTRACKED],
1207 "include move analysis data in -Z unpretty flowgraph output"),
1208 flowgraph_print_assigns: bool = (false, parse_bool, [UNTRACKED],
1209 "include assignment analysis data in -Z unpretty flowgraph output"),
1210 flowgraph_print_all: bool = (false, parse_bool, [UNTRACKED],
1211 "include all dataflow analysis data in -Z unpretty flowgraph output"),
1212 print_region_graph: bool = (false, parse_bool, [UNTRACKED],
1213 "prints region inference graph. \
1214 Use with RUST_REGION_GRAPH=help for more info"),
1215 parse_only: bool = (false, parse_bool, [UNTRACKED],
1216 "parse only; do not compile, assemble, or link"),
1217 no_codegen: bool = (false, parse_bool, [TRACKED],
1218 "run all passes except codegen; no output"),
1219 treat_err_as_bug: bool = (false, parse_bool, [TRACKED],
1220 "treat all errors that occur as bugs"),
1221 report_delayed_bugs: bool = (false, parse_bool, [TRACKED],
1222 "immediately print bugs registered with `delay_span_bug`"),
1223 external_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1224 "show macro backtraces even for non-local macros"),
1225 teach: bool = (false, parse_bool, [TRACKED],
1226 "show extended diagnostic help"),
1227 continue_parse_after_error: bool = (false, parse_bool, [TRACKED],
1228 "attempt to recover from parse errors (experimental)"),
1229 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1230 "enable incremental compilation (experimental)"),
1231 incremental_queries: bool = (true, parse_bool, [UNTRACKED],
1232 "enable incremental compilation support for queries (experimental)"),
1233 incremental_info: bool = (false, parse_bool, [UNTRACKED],
1234 "print high-level information about incremental reuse (or the lack thereof)"),
1235 incremental_dump_hash: bool = (false, parse_bool, [UNTRACKED],
1236 "dump hash information in textual format to stdout"),
1237 incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
1238 "verify incr. comp. hashes of green query instances"),
1239 incremental_ignore_spans: bool = (false, parse_bool, [UNTRACKED],
1240 "ignore spans during ICH computation -- used for testing"),
1241 dump_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1242 "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv)"),
1243 query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1244 "enable queries of the dependency graph for regression testing"),
1245 profile_queries: bool = (false, parse_bool, [UNTRACKED],
1246 "trace and profile the queries of the incremental compilation framework"),
1247 profile_queries_and_keys: bool = (false, parse_bool, [UNTRACKED],
1248 "trace and profile the queries and keys of the incremental compilation framework"),
1249 no_analysis: bool = (false, parse_bool, [UNTRACKED],
1250 "parse and expand the source, but run no analysis"),
1251 extra_plugins: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1252 "load extra plugins"),
1253 unstable_options: bool = (false, parse_bool, [UNTRACKED],
1254 "adds unstable command line options to rustc interface"),
1255 force_overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1256 "force overflow checks on or off"),
1257 trace_macros: bool = (false, parse_bool, [UNTRACKED],
1258 "for every macro invocation, print its name and arguments"),
1259 debug_macros: bool = (false, parse_bool, [TRACKED],
1260 "emit line numbers debug info inside macros"),
1261 keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED],
1262 "don't clear the hygiene data after analysis"),
1263 keep_ast: bool = (false, parse_bool, [UNTRACKED],
1264 "keep the AST after lowering it to HIR"),
1265 show_span: Option<String> = (None, parse_opt_string, [TRACKED],
1266 "show spans for compiler debugging (expr|pat|ty)"),
1267 print_type_sizes: bool = (false, parse_bool, [UNTRACKED],
1268 "print layout information for each type encountered"),
1269 print_mono_items: Option<String> = (None, parse_opt_string, [UNTRACKED],
1270 "print the result of the monomorphization collection pass"),
1271 mir_opt_level: usize = (1, parse_uint, [TRACKED],
1272 "set the MIR optimization level (0-3, default: 1)"),
1273 mutable_noalias: Option<bool> = (None, parse_opt_bool, [TRACKED],
1274 "emit noalias metadata for mutable references (default: yes on LLVM >= 6)"),
1275 arg_align_attributes: bool = (false, parse_bool, [TRACKED],
1276 "emit align metadata for reference arguments"),
1277 dump_mir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1278 "dump MIR state at various points in transforms"),
1279 dump_mir_dir: String = (String::from("mir_dump"), parse_string, [UNTRACKED],
1280 "the directory the MIR is dumped into"),
1281 dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED],
1282 "in addition to `.mir` files, create graphviz `.dot` files"),
1283 dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED],
1284 "if set, exclude the pass number when dumping MIR (used in tests)"),
1285 mir_emit_validate: usize = (0, parse_uint, [TRACKED],
1286 "emit Validate MIR statements, interpreted e.g. by miri (0: do not emit; 1: if function \
1287 contains unsafe block, only validate arguments; 2: always emit full validation)"),
1288 perf_stats: bool = (false, parse_bool, [UNTRACKED],
1289 "print some performance-related statistics"),
1290 hir_stats: bool = (false, parse_bool, [UNTRACKED],
1291 "print some statistics about AST and HIR"),
1292 mir_stats: bool = (false, parse_bool, [UNTRACKED],
1293 "print some statistics about MIR"),
1294 always_encode_mir: bool = (false, parse_bool, [TRACKED],
1295 "encode MIR of all functions into the crate metadata"),
1296 osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
1297 "pass `-install_name @rpath/...` to the macOS linker"),
1298 sanitizer: Option<Sanitizer> = (None, parse_sanitizer, [TRACKED],
1300 linker_flavor: Option<LinkerFlavor> = (None, parse_linker_flavor, [UNTRACKED],
1302 fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
1303 "set the optimization fuel quota for a crate"),
1304 print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
1305 "make Rustc print the total optimization fuel used by a crate"),
1306 force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
1307 "force all crates to be `rustc_private` unstable"),
1308 pre_link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1309 "a single extra argument to prepend the linker invocation (can be used several times)"),
1310 pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1311 "extra arguments to prepend to the linker invocation (space separated)"),
1312 profile: bool = (false, parse_bool, [TRACKED],
1313 "insert profiling code"),
1314 pgo_gen: Option<String> = (None, parse_opt_string, [TRACKED],
1315 "Generate PGO profile data, to a given file, or to the default \
1316 location if it's empty."),
1317 pgo_use: String = (String::new(), parse_string, [TRACKED],
1318 "Use PGO profile data from the given profile file."),
1319 disable_instrumentation_preinliner: bool =
1320 (false, parse_bool, [TRACKED], "Disable the instrumentation pre-inliner, \
1321 useful for profiling / PGO."),
1322 relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
1323 "choose which RELRO level to use"),
1324 disable_ast_check_for_mutation_in_guard: bool = (false, parse_bool, [UNTRACKED],
1325 "skip AST-based mutation-in-guard check (mir-borrowck provides more precise check)"),
1326 nll_subminimal_causes: bool = (false, parse_bool, [UNTRACKED],
1327 "when tracking region error causes, accept subminimal results for faster execution."),
1328 nll_facts: bool = (false, parse_bool, [UNTRACKED],
1329 "dump facts from NLL analysis into side files"),
1330 disable_nll_user_type_assert: bool = (false, parse_bool, [UNTRACKED],
1331 "disable user provided type assertion in NLL"),
1332 nll_dont_emit_read_for_match: bool = (false, parse_bool, [UNTRACKED],
1333 "in match codegen, do not include ReadForMatch statements (used by mir-borrowck)"),
1334 polonius: bool = (false, parse_bool, [UNTRACKED],
1335 "enable polonius-based borrow-checker"),
1336 codegen_time_graph: bool = (false, parse_bool, [UNTRACKED],
1337 "generate a graphical HTML report of time spent in codegen and LLVM"),
1338 thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
1339 "enable ThinLTO when possible"),
1340 inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
1341 "control whether #[inline] functions are in all cgus"),
1342 tls_model: Option<String> = (None, parse_opt_string, [TRACKED],
1343 "choose the TLS model to use (rustc --print tls-models for details)"),
1344 saturating_float_casts: bool = (false, parse_bool, [TRACKED],
1345 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1346 the max/min integer respectively, and NaN is mapped to 0"),
1347 lower_128bit_ops: Option<bool> = (None, parse_opt_bool, [TRACKED],
1348 "rewrite operators on i128 and u128 into lang item calls (typically provided \
1349 by compiler-builtins) so codegen doesn't need to support them,
1350 overriding the default for the current target"),
1351 human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
1352 "generate human-readable, predictable names for codegen units"),
1353 dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
1354 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
1356 unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
1357 "Present the input source, unstable (and less-pretty) variants;
1358 valid types are any of the types for `--pretty`, as well as:
1359 `flowgraph=<nodeid>` (graphviz formatted flowgraph for node),
1360 `everybody_loops` (all function bodies replaced with `loop {}`),
1361 `hir` (the HIR), `hir,identified`, or
1362 `hir,typed` (HIR with types for each node)."),
1363 run_dsymutil: Option<bool> = (None, parse_opt_bool, [TRACKED],
1364 "run `dsymutil` and delete intermediate object files"),
1365 ui_testing: bool = (false, parse_bool, [UNTRACKED],
1366 "format compiler diagnostics in a way that's better suitable for UI testing"),
1367 embed_bitcode: bool = (false, parse_bool, [TRACKED],
1368 "embed LLVM bitcode in object files"),
1369 strip_debuginfo_if_disabled: Option<bool> = (None, parse_opt_bool, [TRACKED],
1370 "tell the linker to strip debuginfo when building without debuginfo enabled."),
1371 share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
1372 "make the current crate share its generic instantiations"),
1373 chalk: bool = (false, parse_bool, [TRACKED],
1374 "enable the experimental Chalk-based trait solving engine"),
1375 cross_lang_lto: CrossLangLto = (CrossLangLto::Disabled, parse_cross_lang_lto, [TRACKED],
1376 "generate build artifacts that are compatible with linker-based LTO."),
1377 no_parallel_llvm: bool = (false, parse_bool, [UNTRACKED],
1378 "don't run LLVM in parallel (while keeping codegen-units and ThinLTO)"),
1379 no_leak_check: bool = (false, parse_bool, [UNTRACKED],
1380 "disables the 'leak check' for subtyping; unsound, but useful for tests"),
1381 crate_attr: Vec<String> = (Vec::new(), parse_string_push, [TRACKED],
1382 "inject the given attribute in the crate"),
1383 self_profile: bool = (false, parse_bool, [UNTRACKED],
1384 "run the self profiler"),
1385 profile_json: bool = (false, parse_bool, [UNTRACKED],
1386 "output a json file with profiler results"),
1389 pub fn default_lib_output() -> CrateType {
1393 pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
1394 let end = &sess.target.target.target_endian;
1395 let arch = &sess.target.target.arch;
1396 let wordsz = &sess.target.target.target_pointer_width;
1397 let os = &sess.target.target.target_os;
1398 let env = &sess.target.target.target_env;
1399 let vendor = &sess.target.target.target_vendor;
1400 let min_atomic_width = sess.target.target.min_atomic_width();
1401 let max_atomic_width = sess.target.target.max_atomic_width();
1402 let atomic_cas = sess.target.target.options.atomic_cas;
1404 let mut ret = FxHashSet::default();
1406 ret.insert((Symbol::intern("target_os"), Some(Symbol::intern(os))));
1407 if let Some(ref fam) = sess.target.target.options.target_family {
1408 ret.insert((Symbol::intern("target_family"), Some(Symbol::intern(fam))));
1409 if fam == "windows" || fam == "unix" {
1410 ret.insert((Symbol::intern(fam), None));
1413 ret.insert((Symbol::intern("target_arch"), Some(Symbol::intern(arch))));
1414 ret.insert((Symbol::intern("target_endian"), Some(Symbol::intern(end))));
1416 Symbol::intern("target_pointer_width"),
1417 Some(Symbol::intern(wordsz)),
1419 ret.insert((Symbol::intern("target_env"), Some(Symbol::intern(env))));
1421 Symbol::intern("target_vendor"),
1422 Some(Symbol::intern(vendor)),
1424 if sess.target.target.options.has_elf_tls {
1425 ret.insert((Symbol::intern("target_thread_local"), None));
1427 for &i in &[8, 16, 32, 64, 128] {
1428 if i >= min_atomic_width && i <= max_atomic_width {
1429 let s = i.to_string();
1431 Symbol::intern("target_has_atomic"),
1432 Some(Symbol::intern(&s)),
1436 Symbol::intern("target_has_atomic"),
1437 Some(Symbol::intern("ptr")),
1443 ret.insert((Symbol::intern("target_has_atomic"), Some(Symbol::intern("cas"))));
1445 if sess.opts.debug_assertions {
1446 ret.insert((Symbol::intern("debug_assertions"), None));
1448 if sess.opts.crate_types.contains(&CrateType::ProcMacro) {
1449 ret.insert((Symbol::intern("proc_macro"), None));
1454 pub fn build_configuration(sess: &Session, mut user_cfg: ast::CrateConfig) -> ast::CrateConfig {
1455 // Combine the configuration requested by the session (command line) with
1456 // some default and generated configuration items
1457 let default_cfg = default_configuration(sess);
1458 // If the user wants a test runner, then add the test cfg
1460 user_cfg.insert((Symbol::intern("test"), None));
1462 user_cfg.extend(default_cfg.iter().cloned());
1466 pub fn build_target_config(opts: &Options, sp: &Handler) -> Config {
1467 let target = match Target::search(&opts.target_triple) {
1470 sp.struct_fatal(&format!("Error loading target specification: {}", e))
1471 .help("Use `--print target-list` for a list of built-in targets")
1477 let (isize_ty, usize_ty) = match &target.target_pointer_width[..] {
1478 "16" => (ast::IntTy::I16, ast::UintTy::U16),
1479 "32" => (ast::IntTy::I32, ast::UintTy::U32),
1480 "64" => (ast::IntTy::I64, ast::UintTy::U64),
1481 w => sp.fatal(&format!(
1482 "target specification was invalid: \
1483 unrecognized target-pointer-width {}",
1495 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
1496 pub enum OptionStability {
1502 pub struct RustcOptGroup {
1503 pub apply: Box<dyn Fn(&mut getopts::Options) -> &mut getopts::Options>,
1504 pub name: &'static str,
1505 pub stability: OptionStability,
1508 impl RustcOptGroup {
1509 pub fn is_stable(&self) -> bool {
1510 self.stability == OptionStability::Stable
1513 pub fn stable<F>(name: &'static str, f: F) -> RustcOptGroup
1515 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1520 stability: OptionStability::Stable,
1524 pub fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup
1526 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1531 stability: OptionStability::Unstable,
1536 // The `opt` local module holds wrappers around the `getopts` API that
1537 // adds extra rustc-specific metadata to each option; such metadata
1538 // is exposed by . The public
1539 // functions below ending with `_u` are the functions that return
1540 // *unstable* options, i.e. options that are only enabled when the
1541 // user also passes the `-Z unstable-options` debugging flag.
1543 // The `fn opt_u` etc below are written so that we can use them
1544 // in the future; do not warn about them not being used right now.
1545 #![allow(dead_code)]
1548 use super::RustcOptGroup;
1550 pub type R = RustcOptGroup;
1551 pub type S = &'static str;
1553 fn stable<F>(name: S, f: F) -> R
1555 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1557 RustcOptGroup::stable(name, f)
1560 fn unstable<F>(name: S, f: F) -> R
1562 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1564 RustcOptGroup::unstable(name, f)
1567 fn longer(a: S, b: S) -> S {
1568 if a.len() > b.len() {
1575 pub fn opt_s(a: S, b: S, c: S, d: S) -> R {
1576 stable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1578 pub fn multi_s(a: S, b: S, c: S, d: S) -> R {
1579 stable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1581 pub fn flag_s(a: S, b: S, c: S) -> R {
1582 stable(longer(a, b), move |opts| opts.optflag(a, b, c))
1584 pub fn flagopt_s(a: S, b: S, c: S, d: S) -> R {
1585 stable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1587 pub fn flagmulti_s(a: S, b: S, c: S) -> R {
1588 stable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1591 pub fn opt(a: S, b: S, c: S, d: S) -> R {
1592 unstable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1594 pub fn multi(a: S, b: S, c: S, d: S) -> R {
1595 unstable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1597 pub fn flag(a: S, b: S, c: S) -> R {
1598 unstable(longer(a, b), move |opts| opts.optflag(a, b, c))
1600 pub fn flagopt(a: S, b: S, c: S, d: S) -> R {
1601 unstable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1603 pub fn flagmulti(a: S, b: S, c: S) -> R {
1604 unstable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1608 /// Returns the "short" subset of the rustc command line options,
1609 /// including metadata for each option, such as whether the option is
1610 /// part of the stable long-term interface for rustc.
1611 pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
1613 opt::flag_s("h", "help", "Display this message"),
1614 opt::multi_s("", "cfg", "Configure the compilation environment", "SPEC"),
1618 "Add a directory to the library search path. The
1619 optional KIND can be one of dependency, crate, native,
1620 framework or all (the default).",
1626 "Link the generated crate(s) to the specified native
1627 library NAME. The optional KIND can be one of
1628 static, dylib, or framework. If omitted, dylib is
1635 "Comma separated list of types of crates
1636 for the compiler to emit",
1637 "[bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]",
1642 "Specify the name of the crate being built",
1648 "Comma separated list of types of output for \
1649 the compiler to emit",
1650 "[asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]",
1655 "Comma separated list of compiler information to \
1657 "[crate-name|file-names|sysroot|cfg|target-list|\
1658 target-cpus|target-features|relocation-models|\
1659 code-models|tls-models|target-spec-json|native-static-libs]",
1661 opt::flagmulti_s("g", "", "Equivalent to -C debuginfo=2"),
1662 opt::flagmulti_s("O", "", "Equivalent to -C opt-level=2"),
1663 opt::opt_s("o", "", "Write output to <filename>", "FILENAME"),
1667 "Write output to compiler-chosen filename \
1674 "Provide a detailed explanation of an error \
1678 opt::flag_s("", "test", "Build a test harness"),
1682 "Target triple for which the code is compiled",
1685 opt::multi_s("W", "warn", "Set lint warnings", "OPT"),
1686 opt::multi_s("A", "allow", "Set lint allowed", "OPT"),
1687 opt::multi_s("D", "deny", "Set lint denied", "OPT"),
1688 opt::multi_s("F", "forbid", "Set lint forbidden", "OPT"),
1692 "Set the most restrictive lint level. \
1693 More restrictive lints are capped at this \
1697 opt::multi_s("C", "codegen", "Set a codegen option", "OPT[=VALUE]"),
1698 opt::flag_s("V", "version", "Print version info and exit"),
1699 opt::flag_s("v", "verbose", "Use verbose output"),
1703 /// Returns all rustc command line options, including metadata for
1704 /// each option, such as whether the option is part of the stable
1705 /// long-term interface for rustc.
1706 pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
1707 let mut opts = rustc_short_optgroups();
1712 "Specify where an external rust library is located",
1715 opt::opt_s("", "sysroot", "Override the system root", "PATH"),
1716 opt::multi("Z", "", "Set internal debugging options", "FLAG"),
1720 "How errors and other messages are produced",
1726 "Configure coloring of output:
1727 auto = colorize, if output goes to a tty (default);
1728 always = always colorize output;
1729 never = never colorize output",
1730 "auto|always|never",
1735 "Pretty-print the input instead of compiling;
1736 valid types are: `normal` (un-annotated source),
1737 `expanded` (crates expanded), or
1738 `expanded,identified` (fully parenthesized, AST nodes with IDs).",
1744 "Specify which edition of the compiler to use when compiling code.",
1749 "remap-path-prefix",
1750 "Remap source names in all output (compiler messages and output files)",
1757 // Convert strings provided as --cfg [cfgspec] into a crate_cfg
1758 pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> ast::CrateConfig {
1762 let sess = parse::ParseSess::new(FilePathMapping::empty());
1764 parse::new_parser_from_source_str(&sess, FileName::CfgSpec, s.to_string());
1766 macro_rules! error {($reason: expr) => {
1767 early_error(ErrorOutputType::default(),
1768 &format!(concat!("invalid `--cfg` argument: `{}` (", $reason, ")"), s));
1771 match &mut parser.parse_meta_item() {
1772 Ok(meta_item) if parser.token == token::Eof => {
1773 if meta_item.ident.segments.len() != 1 {
1774 error!("argument key must be an identifier");
1776 match &meta_item.node {
1777 MetaItemKind::List(..) => {
1778 error!(r#"expected `key` or `key="value"`"#);
1780 MetaItemKind::NameValue(lit) if !lit.node.is_str() => {
1781 error!("argument value must be a string");
1783 MetaItemKind::NameValue(..) | MetaItemKind::Word => {
1784 return (meta_item.name(), meta_item.value_str());
1789 Err(err) => err.cancel(),
1792 error!(r#"expected `key` or `key="value"`"#);
1794 .collect::<ast::CrateConfig>()
1797 pub fn get_cmd_lint_options(matches: &getopts::Matches,
1798 error_format: ErrorOutputType)
1799 -> (Vec<(String, lint::Level)>, bool, Option<lint::Level>) {
1800 let mut lint_opts = vec![];
1801 let mut describe_lints = false;
1803 for &level in &[lint::Allow, lint::Warn, lint::Deny, lint::Forbid] {
1804 for lint_name in matches.opt_strs(level.as_str()) {
1805 if lint_name == "help" {
1806 describe_lints = true;
1808 lint_opts.push((lint_name.replace("-", "_"), level));
1813 let lint_cap = matches.opt_str("cap-lints").map(|cap| {
1814 lint::Level::from_str(&cap)
1815 .unwrap_or_else(|| early_error(error_format, &format!("unknown lint level: `{}`", cap)))
1817 (lint_opts, describe_lints, lint_cap)
1820 pub fn build_session_options_and_crate_config(
1821 matches: &getopts::Matches,
1822 ) -> (Options, ast::CrateConfig) {
1823 let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
1824 Some("auto") => ColorConfig::Auto,
1825 Some("always") => ColorConfig::Always,
1826 Some("never") => ColorConfig::Never,
1828 None => ColorConfig::Auto,
1830 Some(arg) => early_error(
1831 ErrorOutputType::default(),
1833 "argument for --color must be auto, \
1834 always or never (instead was `{}`)",
1840 let edition = match matches.opt_str("edition") {
1841 Some(arg) => match Edition::from_str(&arg){
1842 Ok(edition) => edition,
1843 Err(_) => early_error(
1844 ErrorOutputType::default(),
1846 "argument for --edition must be one of: \
1847 {}. (instead was `{}`)",
1853 None => DEFAULT_EDITION,
1856 if !edition.is_stable() && !nightly_options::is_nightly_build() {
1858 ErrorOutputType::default(),
1860 "Edition {} is unstable and only \
1861 available for nightly builds of rustc.",
1868 // We need the opts_present check because the driver will send us Matches
1869 // with only stable options if no unstable options are used. Since error-format
1870 // is unstable, it will not be present. We have to use opts_present not
1871 // opt_present because the latter will panic.
1872 let error_format = if matches.opts_present(&["error-format".to_owned()]) {
1873 match matches.opt_str("error-format").as_ref().map(|s| &s[..]) {
1874 Some("human") => ErrorOutputType::HumanReadable(color),
1875 Some("json") => ErrorOutputType::Json(false),
1876 Some("pretty-json") => ErrorOutputType::Json(true),
1877 Some("short") => ErrorOutputType::Short(color),
1878 None => ErrorOutputType::HumanReadable(color),
1880 Some(arg) => early_error(
1881 ErrorOutputType::HumanReadable(color),
1883 "argument for --error-format must be `human`, `json` or \
1884 `short` (instead was `{}`)",
1890 ErrorOutputType::HumanReadable(color)
1893 let unparsed_crate_types = matches.opt_strs("crate-type");
1894 let crate_types = parse_crate_types_from_list(unparsed_crate_types)
1895 .unwrap_or_else(|e| early_error(error_format, &e[..]));
1897 let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
1899 let mut debugging_opts = build_debugging_options(matches, error_format);
1901 if !debugging_opts.unstable_options && error_format == ErrorOutputType::Json(true) {
1903 ErrorOutputType::Json(false),
1904 "--error-format=pretty-json is unstable",
1908 if debugging_opts.pgo_gen.is_some() && !debugging_opts.pgo_use.is_empty() {
1911 "options `-Z pgo-gen` and `-Z pgo-use` are exclusive",
1915 let mut output_types = BTreeMap::new();
1916 if !debugging_opts.parse_only {
1917 for list in matches.opt_strs("emit") {
1918 for output_type in list.split(',') {
1919 let mut parts = output_type.splitn(2, '=');
1920 let shorthand = parts.next().unwrap();
1921 let output_type = match OutputType::from_shorthand(shorthand) {
1922 Some(output_type) => output_type,
1923 None => early_error(
1926 "unknown emission type: `{}` - expected one of: {}",
1928 OutputType::shorthands_display(),
1932 let path = parts.next().map(PathBuf::from);
1933 output_types.insert(output_type, path);
1937 if output_types.is_empty() {
1938 output_types.insert(OutputType::Exe, None);
1941 let mut cg = build_codegen_options(matches, error_format);
1942 let mut codegen_units = cg.codegen_units;
1943 let mut disable_thinlto = false;
1945 // Issue #30063: if user requests llvm-related output to one
1946 // particular path, disable codegen-units.
1947 let incompatible: Vec<_> = output_types
1949 .map(|ot_path| ot_path.0)
1950 .filter(|ot| !ot.is_compatible_with_codegen_units_and_single_output_file())
1951 .map(|ot| ot.shorthand())
1953 if !incompatible.is_empty() {
1954 match codegen_units {
1955 Some(n) if n > 1 => {
1956 if matches.opt_present("o") {
1957 for ot in &incompatible {
1961 "--emit={} with -o incompatible with \
1962 -C codegen-units=N for N > 1",
1967 early_warn(error_format, "resetting to default -C codegen-units=1");
1968 codegen_units = Some(1);
1969 disable_thinlto = true;
1973 codegen_units = Some(1);
1974 disable_thinlto = true;
1979 if debugging_opts.query_threads == Some(0) {
1982 "Value for query threads must be a positive nonzero integer",
1986 if debugging_opts.query_threads.unwrap_or(1) > 1 && debugging_opts.fuel.is_some() {
1989 "Optimization fuel is incompatible with multiple query threads",
1993 if codegen_units == Some(0) {
1996 "Value for codegen units must be a positive nonzero integer",
2000 let incremental = match (&debugging_opts.incremental, &cg.incremental) {
2001 (&Some(ref path1), &Some(ref path2)) => {
2006 "conflicting paths for `-Z incremental` and \
2007 `-C incremental` specified: {} versus {}",
2015 (&Some(ref path), &None) => Some(path),
2016 (&None, &Some(ref path)) => Some(path),
2017 (&None, &None) => None,
2018 }.map(|m| PathBuf::from(m));
2020 if debugging_opts.profile && incremental.is_some() {
2023 "can't instrument with gcov profiling when compiling incrementally",
2027 let mut prints = Vec::<PrintRequest>::new();
2028 if cg.target_cpu.as_ref().map_or(false, |s| s == "help") {
2029 prints.push(PrintRequest::TargetCPUs);
2030 cg.target_cpu = None;
2032 if cg.target_feature == "help" {
2033 prints.push(PrintRequest::TargetFeatures);
2034 cg.target_feature = String::new();
2036 if cg.relocation_model.as_ref().map_or(false, |s| s == "help") {
2037 prints.push(PrintRequest::RelocationModels);
2038 cg.relocation_model = None;
2040 if cg.code_model.as_ref().map_or(false, |s| s == "help") {
2041 prints.push(PrintRequest::CodeModels);
2042 cg.code_model = None;
2047 .map_or(false, |s| s == "help")
2049 prints.push(PrintRequest::TlsModels);
2050 debugging_opts.tls_model = None;
2055 let sysroot_opt = matches.opt_str("sysroot").map(|m| PathBuf::from(&m));
2056 let target_triple = if let Some(target) = matches.opt_str("target") {
2057 if target.ends_with(".json") {
2058 let path = Path::new(&target);
2059 match TargetTriple::from_path(&path) {
2060 Ok(triple) => triple,
2062 early_error(error_format, &format!("target file {:?} does not exist", path))
2066 TargetTriple::TargetTriple(target)
2069 TargetTriple::from_triple(host_triple())
2072 if matches.opt_present("O") {
2073 if cg.opt_level.is_some() {
2074 early_error(error_format, "-O and -C opt-level both provided");
2078 match cg.opt_level.as_ref().map(String::as_ref) {
2079 None => OptLevel::No,
2080 Some("0") => OptLevel::No,
2081 Some("1") => OptLevel::Less,
2082 Some("2") => OptLevel::Default,
2083 Some("3") => OptLevel::Aggressive,
2084 Some("s") => OptLevel::Size,
2085 Some("z") => OptLevel::SizeMin,
2090 "optimization level needs to be \
2091 between 0-3 (instead was `{}`)",
2099 let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);
2100 let debuginfo = if matches.opt_present("g") {
2101 if cg.debuginfo.is_some() {
2102 early_error(error_format, "-g and -C debuginfo both provided");
2106 match cg.debuginfo {
2107 None | Some(0) => DebugInfo::None,
2108 Some(1) => DebugInfo::Limited,
2109 Some(2) => DebugInfo::Full,
2114 "debug info level needs to be between \
2115 0-2 (instead was `{}`)",
2123 let mut search_paths = SearchPaths::new();
2124 for s in &matches.opt_strs("L") {
2125 search_paths.add_path(&s[..], error_format);
2132 // Parse string of the form "[KIND=]lib[:new_name]",
2133 // where KIND is one of "dylib", "framework", "static".
2134 let mut parts = s.splitn(2, '=');
2135 let kind = parts.next().unwrap();
2136 let (name, kind) = match (parts.next(), kind) {
2137 (None, name) => (name, None),
2138 (Some(name), "dylib") => (name, Some(cstore::NativeUnknown)),
2139 (Some(name), "framework") => (name, Some(cstore::NativeFramework)),
2140 (Some(name), "static") => (name, Some(cstore::NativeStatic)),
2141 (Some(name), "static-nobundle") => (name, Some(cstore::NativeStaticNobundle)),
2146 "unknown library kind `{}`, expected \
2147 one of dylib, framework, or static",
2153 if kind == Some(cstore::NativeStaticNobundle) && !nightly_options::is_nightly_build() {
2157 "the library kind 'static-nobundle' is only \
2158 accepted on the nightly compiler"
2162 let mut name_parts = name.splitn(2, ':');
2163 let name = name_parts.next().unwrap();
2164 let new_name = name_parts.next();
2165 (name.to_string(), new_name.map(|n| n.to_string()), kind)
2169 let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
2170 let test = matches.opt_present("test");
2172 prints.extend(matches.opt_strs("print").into_iter().map(|s| match &*s {
2173 "crate-name" => PrintRequest::CrateName,
2174 "file-names" => PrintRequest::FileNames,
2175 "sysroot" => PrintRequest::Sysroot,
2176 "cfg" => PrintRequest::Cfg,
2177 "target-list" => PrintRequest::TargetList,
2178 "target-cpus" => PrintRequest::TargetCPUs,
2179 "target-features" => PrintRequest::TargetFeatures,
2180 "relocation-models" => PrintRequest::RelocationModels,
2181 "code-models" => PrintRequest::CodeModels,
2182 "tls-models" => PrintRequest::TlsModels,
2183 "native-static-libs" => PrintRequest::NativeStaticLibs,
2184 "target-spec-json" => {
2185 if nightly_options::is_unstable_enabled(matches) {
2186 PrintRequest::TargetSpec
2191 "the `-Z unstable-options` flag must also be passed to \
2192 enable the target-spec-json print option"
2197 req => early_error(error_format, &format!("unknown print request `{}`", req)),
2200 let borrowck_mode = match debugging_opts.borrowck.as_ref().map(|s| &s[..]) {
2201 None | Some("ast") => BorrowckMode::Ast,
2202 Some("mir") => BorrowckMode::Mir,
2203 Some("compare") => BorrowckMode::Compare,
2204 Some("migrate") => BorrowckMode::Migrate,
2205 Some(m) => early_error(error_format, &format!("unknown borrowck mode `{}`", m)),
2208 if !cg.remark.is_empty() && debuginfo == DebugInfo::None {
2211 "-C remark will not show source locations without \
2216 let mut externs: BTreeMap<_, BTreeSet<_>> = BTreeMap::new();
2217 for arg in &matches.opt_strs("extern") {
2218 let mut parts = arg.splitn(2, '=');
2219 let name = match parts.next() {
2221 None => early_error(error_format, "--extern value must not be empty"),
2223 let location = match parts.next() {
2225 None => early_error(
2227 "--extern value must be of the format `foo=bar`",
2232 .entry(name.to_string())
2234 .insert(location.to_string());
2237 let crate_name = matches.opt_str("crate-name");
2239 let remap_path_prefix = matches
2240 .opt_strs("remap-path-prefix")
2243 let mut parts = remap.rsplitn(2, '='); // reverse iterator
2244 let to = parts.next();
2245 let from = parts.next();
2247 (Some(from), Some(to)) => (PathBuf::from(from), PathBuf::from(to)),
2250 "--remap-path-prefix must contain '=' between FROM and TO",
2259 optimize: opt_level,
2264 output_types: OutputTypes(output_types),
2266 maybe_sysroot: sysroot_opt,
2275 externs: Externs(externs),
2279 unstable_features: UnstableFeatures::from_environment(),
2281 actually_rustdoc: false,
2282 cli_forced_codegen_units: codegen_units,
2283 cli_forced_thinlto_off: disable_thinlto,
2291 pub fn parse_crate_types_from_list(list_list: Vec<String>) -> Result<Vec<CrateType>, String> {
2292 let mut crate_types: Vec<CrateType> = Vec::new();
2293 for unparsed_crate_type in &list_list {
2294 for part in unparsed_crate_type.split(',') {
2295 let new_part = match part {
2296 "lib" => default_lib_output(),
2297 "rlib" => CrateType::Rlib,
2298 "staticlib" => CrateType::Staticlib,
2299 "dylib" => CrateType::Dylib,
2300 "cdylib" => CrateType::Cdylib,
2301 "bin" => CrateType::Executable,
2302 "proc-macro" => CrateType::ProcMacro,
2304 return Err(format!("unknown crate type: `{}`", part));
2307 if !crate_types.contains(&new_part) {
2308 crate_types.push(new_part)
2316 pub mod nightly_options {
2318 use syntax::feature_gate::UnstableFeatures;
2319 use super::{ErrorOutputType, OptionStability, RustcOptGroup};
2320 use session::early_error;
2322 pub fn is_unstable_enabled(matches: &getopts::Matches) -> bool {
2327 .any(|x| *x == "unstable-options")
2330 pub fn is_nightly_build() -> bool {
2331 UnstableFeatures::from_environment().is_nightly_build()
2334 pub fn check_nightly_options(matches: &getopts::Matches, flags: &[RustcOptGroup]) {
2335 let has_z_unstable_option = matches
2338 .any(|x| *x == "unstable-options");
2339 let really_allows_unstable_options =
2340 UnstableFeatures::from_environment().is_nightly_build();
2342 for opt in flags.iter() {
2343 if opt.stability == OptionStability::Stable {
2346 if !matches.opt_present(opt.name) {
2349 if opt.name != "Z" && !has_z_unstable_option {
2351 ErrorOutputType::default(),
2353 "the `-Z unstable-options` flag must also be passed to enable \
2359 if really_allows_unstable_options {
2362 match opt.stability {
2363 OptionStability::Unstable => {
2365 "the option `{}` is only accepted on the \
2369 early_error(ErrorOutputType::default(), &msg);
2371 OptionStability::Stable => {}
2377 impl fmt::Display for CrateType {
2378 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
2380 CrateType::Executable => "bin".fmt(f),
2381 CrateType::Dylib => "dylib".fmt(f),
2382 CrateType::Rlib => "rlib".fmt(f),
2383 CrateType::Staticlib => "staticlib".fmt(f),
2384 CrateType::Cdylib => "cdylib".fmt(f),
2385 CrateType::ProcMacro => "proc-macro".fmt(f),
2390 /// Commandline arguments passed to the compiler have to be incorporated with
2391 /// the dependency tracking system for incremental compilation. This module
2392 /// provides some utilities to make this more convenient.
2394 /// The values of all commandline arguments that are relevant for dependency
2395 /// tracking are hashed into a single value that determines whether the
2396 /// incremental compilation cache can be re-used or not. This hashing is done
2397 /// via the DepTrackingHash trait defined below, since the standard Hash
2398 /// implementation might not be suitable (e.g. arguments are stored in a Vec,
2399 /// the hash of which is order dependent, but we might not want the order of
2400 /// arguments to make a difference for the hash).
2402 /// However, since the value provided by Hash::hash often *is* suitable,
2403 /// especially for primitive types, there is the
2404 /// impl_dep_tracking_hash_via_hash!() macro that allows to simply reuse the
2405 /// Hash implementation for DepTrackingHash. It's important though that
2406 /// we have an opt-in scheme here, so one is hopefully forced to think about
2407 /// how the hash should be calculated when adding a new commandline argument.
2411 use std::collections::BTreeMap;
2412 use std::hash::Hash;
2413 use std::path::PathBuf;
2414 use std::collections::hash_map::DefaultHasher;
2415 use super::{CrateType, DebugInfo, ErrorOutputType, OptLevel, OutputTypes,
2416 Passes, Sanitizer, LtoCli, CrossLangLto};
2417 use syntax::feature_gate::UnstableFeatures;
2418 use rustc_target::spec::{PanicStrategy, RelroLevel, TargetTriple};
2419 use syntax::edition::Edition;
2421 pub trait DepTrackingHash {
2422 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType);
2425 macro_rules! impl_dep_tracking_hash_via_hash {
2427 impl DepTrackingHash for $t {
2428 fn hash(&self, hasher: &mut DefaultHasher, _: ErrorOutputType) {
2429 Hash::hash(self, hasher);
2435 macro_rules! impl_dep_tracking_hash_for_sortable_vec_of {
2437 impl DepTrackingHash for Vec<$t> {
2438 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2439 let mut elems: Vec<&$t> = self.iter().collect();
2441 Hash::hash(&elems.len(), hasher);
2442 for (index, elem) in elems.iter().enumerate() {
2443 Hash::hash(&index, hasher);
2444 DepTrackingHash::hash(*elem, hasher, error_format);
2451 impl_dep_tracking_hash_via_hash!(bool);
2452 impl_dep_tracking_hash_via_hash!(usize);
2453 impl_dep_tracking_hash_via_hash!(u64);
2454 impl_dep_tracking_hash_via_hash!(String);
2455 impl_dep_tracking_hash_via_hash!(PathBuf);
2456 impl_dep_tracking_hash_via_hash!(lint::Level);
2457 impl_dep_tracking_hash_via_hash!(Option<bool>);
2458 impl_dep_tracking_hash_via_hash!(Option<usize>);
2459 impl_dep_tracking_hash_via_hash!(Option<String>);
2460 impl_dep_tracking_hash_via_hash!(Option<(String, u64)>);
2461 impl_dep_tracking_hash_via_hash!(Option<PanicStrategy>);
2462 impl_dep_tracking_hash_via_hash!(Option<RelroLevel>);
2463 impl_dep_tracking_hash_via_hash!(Option<lint::Level>);
2464 impl_dep_tracking_hash_via_hash!(Option<PathBuf>);
2465 impl_dep_tracking_hash_via_hash!(Option<cstore::NativeLibraryKind>);
2466 impl_dep_tracking_hash_via_hash!(CrateType);
2467 impl_dep_tracking_hash_via_hash!(PanicStrategy);
2468 impl_dep_tracking_hash_via_hash!(RelroLevel);
2469 impl_dep_tracking_hash_via_hash!(Passes);
2470 impl_dep_tracking_hash_via_hash!(OptLevel);
2471 impl_dep_tracking_hash_via_hash!(LtoCli);
2472 impl_dep_tracking_hash_via_hash!(DebugInfo);
2473 impl_dep_tracking_hash_via_hash!(UnstableFeatures);
2474 impl_dep_tracking_hash_via_hash!(OutputTypes);
2475 impl_dep_tracking_hash_via_hash!(cstore::NativeLibraryKind);
2476 impl_dep_tracking_hash_via_hash!(Sanitizer);
2477 impl_dep_tracking_hash_via_hash!(Option<Sanitizer>);
2478 impl_dep_tracking_hash_via_hash!(TargetTriple);
2479 impl_dep_tracking_hash_via_hash!(Edition);
2480 impl_dep_tracking_hash_via_hash!(CrossLangLto);
2482 impl_dep_tracking_hash_for_sortable_vec_of!(String);
2483 impl_dep_tracking_hash_for_sortable_vec_of!(PathBuf);
2484 impl_dep_tracking_hash_for_sortable_vec_of!(CrateType);
2485 impl_dep_tracking_hash_for_sortable_vec_of!((String, lint::Level));
2486 impl_dep_tracking_hash_for_sortable_vec_of!((
2489 Option<cstore::NativeLibraryKind>
2491 impl_dep_tracking_hash_for_sortable_vec_of!((String, u64));
2493 impl<T1, T2> DepTrackingHash for (T1, T2)
2495 T1: DepTrackingHash,
2496 T2: DepTrackingHash,
2498 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2499 Hash::hash(&0, hasher);
2500 DepTrackingHash::hash(&self.0, hasher, error_format);
2501 Hash::hash(&1, hasher);
2502 DepTrackingHash::hash(&self.1, hasher, error_format);
2506 impl<T1, T2, T3> DepTrackingHash for (T1, T2, T3)
2508 T1: DepTrackingHash,
2509 T2: DepTrackingHash,
2510 T3: DepTrackingHash,
2512 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2513 Hash::hash(&0, hasher);
2514 DepTrackingHash::hash(&self.0, hasher, error_format);
2515 Hash::hash(&1, hasher);
2516 DepTrackingHash::hash(&self.1, hasher, error_format);
2517 Hash::hash(&2, hasher);
2518 DepTrackingHash::hash(&self.2, hasher, error_format);
2522 // This is a stable hash because BTreeMap is a sorted container
2524 sub_hashes: BTreeMap<&'static str, &dyn DepTrackingHash>,
2525 hasher: &mut DefaultHasher,
2526 error_format: ErrorOutputType,
2528 for (key, sub_hash) in sub_hashes {
2529 // Using Hash::hash() instead of DepTrackingHash::hash() is fine for
2530 // the keys, as they are just plain strings
2531 Hash::hash(&key.len(), hasher);
2532 Hash::hash(key, hasher);
2533 sub_hash.hash(hasher, error_format);
2544 use session::config::{build_configuration, build_session_options_and_crate_config};
2545 use session::config::{LtoCli, CrossLangLto};
2546 use session::build_session;
2547 use std::collections::{BTreeMap, BTreeSet};
2548 use std::iter::FromIterator;
2549 use std::path::PathBuf;
2550 use super::{Externs, OutputType, OutputTypes};
2551 use rustc_target::spec::{PanicStrategy, RelroLevel};
2552 use syntax::symbol::Symbol;
2553 use syntax::edition::{Edition, DEFAULT_EDITION};
2557 fn optgroups() -> getopts::Options {
2558 let mut opts = getopts::Options::new();
2559 for group in super::rustc_optgroups() {
2560 (group.apply)(&mut opts);
2565 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
2566 BTreeMap::from_iter(entries.into_iter())
2569 fn mk_set<V: Ord>(entries: Vec<V>) -> BTreeSet<V> {
2570 BTreeSet::from_iter(entries.into_iter())
2573 // When the user supplies --test we should implicitly supply --cfg test
2575 fn test_switch_implies_cfg_test() {
2576 syntax::with_globals(|| {
2577 let matches = &match optgroups().parse(&["--test".to_string()]) {
2579 Err(f) => panic!("test_switch_implies_cfg_test: {}", f),
2581 let registry = errors::registry::Registry::new(&[]);
2582 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2583 let sess = build_session(sessopts, None, registry);
2584 let cfg = build_configuration(&sess, cfg);
2585 assert!(cfg.contains(&(Symbol::intern("test"), None)));
2589 // When the user supplies --test and --cfg test, don't implicitly add
2590 // another --cfg test
2592 fn test_switch_implies_cfg_test_unless_cfg_test() {
2593 syntax::with_globals(|| {
2594 let matches = &match optgroups().parse(&["--test".to_string(),
2595 "--cfg=test".to_string()]) {
2597 Err(f) => panic!("test_switch_implies_cfg_test_unless_cfg_test: {}", f),
2599 let registry = errors::registry::Registry::new(&[]);
2600 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2601 let sess = build_session(sessopts, None, registry);
2602 let cfg = build_configuration(&sess, cfg);
2603 let mut test_items = cfg.iter().filter(|&&(name, _)| name == "test");
2604 assert!(test_items.next().is_some());
2605 assert!(test_items.next().is_none());
2610 fn test_can_print_warnings() {
2611 syntax::with_globals(|| {
2612 let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
2613 let registry = errors::registry::Registry::new(&[]);
2614 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2615 let sess = build_session(sessopts, None, registry);
2616 assert!(!sess.diagnostic().flags.can_emit_warnings);
2619 syntax::with_globals(|| {
2620 let matches = optgroups()
2621 .parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()])
2623 let registry = errors::registry::Registry::new(&[]);
2624 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2625 let sess = build_session(sessopts, None, registry);
2626 assert!(sess.diagnostic().flags.can_emit_warnings);
2629 syntax::with_globals(|| {
2630 let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
2631 let registry = errors::registry::Registry::new(&[]);
2632 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2633 let sess = build_session(sessopts, None, registry);
2634 assert!(sess.diagnostic().flags.can_emit_warnings);
2639 fn test_output_types_tracking_hash_different_paths() {
2640 let mut v1 = Options::default();
2641 let mut v2 = Options::default();
2642 let mut v3 = Options::default();
2645 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("./some/thing")))]);
2647 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("/some/thing")))]);
2648 v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
2650 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2651 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2652 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2655 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2656 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2657 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2661 fn test_output_types_tracking_hash_different_construction_order() {
2662 let mut v1 = Options::default();
2663 let mut v2 = Options::default();
2665 v1.output_types = OutputTypes::new(&[
2666 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2667 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2670 v2.output_types = OutputTypes::new(&[
2671 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2672 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2675 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2678 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2682 fn test_externs_tracking_hash_different_construction_order() {
2683 let mut v1 = Options::default();
2684 let mut v2 = Options::default();
2685 let mut v3 = Options::default();
2687 v1.externs = Externs::new(mk_map(vec![
2690 mk_set(vec![String::from("b"), String::from("c")]),
2694 mk_set(vec![String::from("e"), String::from("f")]),
2698 v2.externs = Externs::new(mk_map(vec![
2701 mk_set(vec![String::from("e"), String::from("f")]),
2705 mk_set(vec![String::from("b"), String::from("c")]),
2709 v3.externs = Externs::new(mk_map(vec![
2712 mk_set(vec![String::from("b"), String::from("c")]),
2716 mk_set(vec![String::from("f"), String::from("e")]),
2720 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2721 assert_eq!(v1.dep_tracking_hash(), v3.dep_tracking_hash());
2722 assert_eq!(v2.dep_tracking_hash(), v3.dep_tracking_hash());
2725 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2726 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2727 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2731 fn test_lints_tracking_hash_different_values() {
2732 let mut v1 = Options::default();
2733 let mut v2 = Options::default();
2734 let mut v3 = Options::default();
2736 v1.lint_opts = vec![
2737 (String::from("a"), lint::Allow),
2738 (String::from("b"), lint::Warn),
2739 (String::from("c"), lint::Deny),
2740 (String::from("d"), lint::Forbid),
2743 v2.lint_opts = vec![
2744 (String::from("a"), lint::Allow),
2745 (String::from("b"), lint::Warn),
2746 (String::from("X"), lint::Deny),
2747 (String::from("d"), lint::Forbid),
2750 v3.lint_opts = vec![
2751 (String::from("a"), lint::Allow),
2752 (String::from("b"), lint::Warn),
2753 (String::from("c"), lint::Forbid),
2754 (String::from("d"), lint::Deny),
2757 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2758 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2759 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2762 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2763 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2764 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2768 fn test_lints_tracking_hash_different_construction_order() {
2769 let mut v1 = Options::default();
2770 let mut v2 = Options::default();
2772 v1.lint_opts = vec![
2773 (String::from("a"), lint::Allow),
2774 (String::from("b"), lint::Warn),
2775 (String::from("c"), lint::Deny),
2776 (String::from("d"), lint::Forbid),
2779 v2.lint_opts = vec![
2780 (String::from("a"), lint::Allow),
2781 (String::from("c"), lint::Deny),
2782 (String::from("b"), lint::Warn),
2783 (String::from("d"), lint::Forbid),
2786 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2789 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2790 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2794 fn test_search_paths_tracking_hash_different_order() {
2795 let mut v1 = Options::default();
2796 let mut v2 = Options::default();
2797 let mut v3 = Options::default();
2798 let mut v4 = Options::default();
2802 .add_path("native=abc", super::ErrorOutputType::Json(false));
2804 .add_path("crate=def", super::ErrorOutputType::Json(false));
2806 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2808 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2810 .add_path("all=mno", 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("crate=def", super::ErrorOutputType::Json(false));
2819 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2821 .add_path("all=mno", super::ErrorOutputType::Json(false));
2824 .add_path("crate=def", super::ErrorOutputType::Json(false));
2826 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2828 .add_path("native=abc", super::ErrorOutputType::Json(false));
2830 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2832 .add_path("all=mno", super::ErrorOutputType::Json(false));
2835 .add_path("all=mno", super::ErrorOutputType::Json(false));
2837 .add_path("native=abc", super::ErrorOutputType::Json(false));
2839 .add_path("crate=def", super::ErrorOutputType::Json(false));
2841 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2843 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2845 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2846 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2847 assert!(v1.dep_tracking_hash() == v4.dep_tracking_hash());
2850 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2851 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2852 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2853 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2857 fn test_native_libs_tracking_hash_different_values() {
2858 let mut v1 = Options::default();
2859 let mut v2 = Options::default();
2860 let mut v3 = Options::default();
2861 let mut v4 = Options::default();
2865 (String::from("a"), None, Some(cstore::NativeStatic)),
2866 (String::from("b"), None, Some(cstore::NativeFramework)),
2867 (String::from("c"), None, Some(cstore::NativeUnknown)),
2872 (String::from("a"), None, Some(cstore::NativeStatic)),
2873 (String::from("X"), None, Some(cstore::NativeFramework)),
2874 (String::from("c"), None, Some(cstore::NativeUnknown)),
2879 (String::from("a"), None, Some(cstore::NativeStatic)),
2880 (String::from("b"), None, Some(cstore::NativeStatic)),
2881 (String::from("c"), None, Some(cstore::NativeUnknown)),
2886 (String::from("a"), None, Some(cstore::NativeStatic)),
2889 Some(String::from("X")),
2890 Some(cstore::NativeFramework),
2892 (String::from("c"), None, Some(cstore::NativeUnknown)),
2895 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2896 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2897 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
2900 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2901 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2902 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2903 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2907 fn test_native_libs_tracking_hash_different_order() {
2908 let mut v1 = Options::default();
2909 let mut v2 = Options::default();
2910 let mut v3 = Options::default();
2914 (String::from("a"), None, Some(cstore::NativeStatic)),
2915 (String::from("b"), None, Some(cstore::NativeFramework)),
2916 (String::from("c"), None, Some(cstore::NativeUnknown)),
2920 (String::from("b"), None, Some(cstore::NativeFramework)),
2921 (String::from("a"), None, Some(cstore::NativeStatic)),
2922 (String::from("c"), None, Some(cstore::NativeUnknown)),
2926 (String::from("c"), None, Some(cstore::NativeUnknown)),
2927 (String::from("a"), None, Some(cstore::NativeStatic)),
2928 (String::from("b"), None, Some(cstore::NativeFramework)),
2931 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2932 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2933 assert!(v2.dep_tracking_hash() == v3.dep_tracking_hash());
2936 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2937 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2938 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2942 fn test_codegen_options_tracking_hash() {
2943 let reference = Options::default();
2944 let mut opts = Options::default();
2946 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
2947 opts.cg.ar = Some(String::from("abc"));
2948 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2950 opts.cg.linker = Some(PathBuf::from("linker"));
2951 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2953 opts.cg.link_args = Some(vec![String::from("abc"), String::from("def")]);
2954 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2956 opts.cg.link_dead_code = true;
2957 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2959 opts.cg.rpath = true;
2960 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2962 opts.cg.extra_filename = String::from("extra-filename");
2963 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2965 opts.cg.codegen_units = Some(42);
2966 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2968 opts.cg.remark = super::Passes::Some(vec![String::from("pass1"), String::from("pass2")]);
2969 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2971 opts.cg.save_temps = true;
2972 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2974 opts.cg.incremental = Some(String::from("abc"));
2975 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2977 // Make sure changing a [TRACKED] option changes the hash
2978 opts = reference.clone();
2979 opts.cg.lto = LtoCli::Fat;
2980 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2982 opts = reference.clone();
2983 opts.cg.target_cpu = Some(String::from("abc"));
2984 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2986 opts = reference.clone();
2987 opts.cg.target_feature = String::from("all the features, all of them");
2988 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2990 opts = reference.clone();
2991 opts.cg.passes = vec![String::from("1"), String::from("2")];
2992 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2994 opts = reference.clone();
2995 opts.cg.llvm_args = vec![String::from("1"), String::from("2")];
2996 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2998 opts = reference.clone();
2999 opts.cg.overflow_checks = Some(true);
3000 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3002 opts = reference.clone();
3003 opts.cg.no_prepopulate_passes = true;
3004 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3006 opts = reference.clone();
3007 opts.cg.no_vectorize_loops = true;
3008 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3010 opts = reference.clone();
3011 opts.cg.no_vectorize_slp = true;
3012 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3014 opts = reference.clone();
3015 opts.cg.soft_float = true;
3016 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3018 opts = reference.clone();
3019 opts.cg.prefer_dynamic = true;
3020 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3022 opts = reference.clone();
3023 opts.cg.no_integrated_as = true;
3024 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3026 opts = reference.clone();
3027 opts.cg.no_redzone = Some(true);
3028 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3030 opts = reference.clone();
3031 opts.cg.relocation_model = Some(String::from("relocation model"));
3032 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3034 opts = reference.clone();
3035 opts.cg.code_model = Some(String::from("code model"));
3036 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3038 opts = reference.clone();
3039 opts.debugging_opts.tls_model = Some(String::from("tls model"));
3040 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3042 opts = reference.clone();
3043 opts.debugging_opts.pgo_gen = Some(String::from("abc"));
3044 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3046 opts = reference.clone();
3047 opts.debugging_opts.pgo_use = String::from("abc");
3048 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3050 opts = reference.clone();
3051 opts.cg.metadata = vec![String::from("A"), String::from("B")];
3052 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3054 opts = reference.clone();
3055 opts.cg.debuginfo = Some(0xdeadbeef);
3056 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3058 opts = reference.clone();
3059 opts.cg.debuginfo = Some(0xba5eba11);
3060 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3062 opts = reference.clone();
3063 opts.cg.force_frame_pointers = Some(false);
3064 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3066 opts = reference.clone();
3067 opts.cg.debug_assertions = Some(true);
3068 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3070 opts = reference.clone();
3071 opts.cg.inline_threshold = Some(0xf007ba11);
3072 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3074 opts = reference.clone();
3075 opts.cg.panic = Some(PanicStrategy::Abort);
3076 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3080 fn test_debugging_options_tracking_hash() {
3081 let reference = Options::default();
3082 let mut opts = Options::default();
3084 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
3085 opts.debugging_opts.verbose = true;
3086 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3087 opts.debugging_opts.time_passes = true;
3088 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3089 opts.debugging_opts.count_llvm_insns = true;
3090 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3091 opts.debugging_opts.time_llvm_passes = true;
3092 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3093 opts.debugging_opts.input_stats = true;
3094 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3095 opts.debugging_opts.codegen_stats = true;
3096 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3097 opts.debugging_opts.borrowck_stats = true;
3098 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3099 opts.debugging_opts.meta_stats = true;
3100 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3101 opts.debugging_opts.print_link_args = true;
3102 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3103 opts.debugging_opts.print_llvm_passes = true;
3104 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3105 opts.debugging_opts.ast_json = true;
3106 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3107 opts.debugging_opts.ast_json_noexpand = true;
3108 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3109 opts.debugging_opts.ls = true;
3110 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3111 opts.debugging_opts.save_analysis = true;
3112 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3113 opts.debugging_opts.flowgraph_print_loans = true;
3114 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3115 opts.debugging_opts.flowgraph_print_moves = true;
3116 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3117 opts.debugging_opts.flowgraph_print_assigns = true;
3118 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3119 opts.debugging_opts.flowgraph_print_all = true;
3120 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3121 opts.debugging_opts.print_region_graph = true;
3122 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3123 opts.debugging_opts.parse_only = true;
3124 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3125 opts.debugging_opts.incremental = Some(String::from("abc"));
3126 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3127 opts.debugging_opts.dump_dep_graph = true;
3128 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3129 opts.debugging_opts.query_dep_graph = true;
3130 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3131 opts.debugging_opts.no_analysis = true;
3132 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3133 opts.debugging_opts.unstable_options = true;
3134 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3135 opts.debugging_opts.trace_macros = true;
3136 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3137 opts.debugging_opts.keep_hygiene_data = true;
3138 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3139 opts.debugging_opts.keep_ast = true;
3140 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3141 opts.debugging_opts.print_mono_items = Some(String::from("abc"));
3142 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3143 opts.debugging_opts.dump_mir = Some(String::from("abc"));
3144 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3145 opts.debugging_opts.dump_mir_dir = String::from("abc");
3146 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3147 opts.debugging_opts.dump_mir_graphviz = true;
3148 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3150 // Make sure changing a [TRACKED] option changes the hash
3151 opts = reference.clone();
3152 opts.debugging_opts.asm_comments = true;
3153 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3155 opts = reference.clone();
3156 opts.debugging_opts.verify_llvm_ir = true;
3157 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3159 opts = reference.clone();
3160 opts.debugging_opts.no_landing_pads = true;
3161 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3163 opts = reference.clone();
3164 opts.debugging_opts.fewer_names = true;
3165 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3167 opts = reference.clone();
3168 opts.debugging_opts.no_codegen = true;
3169 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3171 opts = reference.clone();
3172 opts.debugging_opts.treat_err_as_bug = true;
3173 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3175 opts = reference.clone();
3176 opts.debugging_opts.report_delayed_bugs = true;
3177 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3179 opts = reference.clone();
3180 opts.debugging_opts.continue_parse_after_error = true;
3181 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3183 opts = reference.clone();
3184 opts.debugging_opts.extra_plugins = vec![String::from("plugin1"), String::from("plugin2")];
3185 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3187 opts = reference.clone();
3188 opts.debugging_opts.force_overflow_checks = Some(true);
3189 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3191 opts = reference.clone();
3192 opts.debugging_opts.show_span = Some(String::from("abc"));
3193 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3195 opts = reference.clone();
3196 opts.debugging_opts.mir_opt_level = 3;
3197 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3199 opts = reference.clone();
3200 opts.debugging_opts.relro_level = Some(RelroLevel::Full);
3201 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3203 opts = reference.clone();
3204 opts.debugging_opts.cross_lang_lto = CrossLangLto::LinkerPluginAuto;
3205 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3209 fn test_edition_parsing() {
3210 // test default edition
3211 let options = Options::default();
3212 assert!(options.edition == DEFAULT_EDITION);
3214 let matches = optgroups()
3215 .parse(&["--edition=2018".to_string()])
3217 let (sessopts, _) = build_session_options_and_crate_config(&matches);
3218 assert!(sessopts.edition == Edition::Edition2018)