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};
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 #[derive(Clone, Copy, PartialEq, Hash)]
73 /// Don't do any LTO whatsoever
76 /// Do a full crate graph LTO. The flavor is determined by the compiler
77 /// (currently the default is "fat").
80 /// Do a full crate graph LTO with ThinLTO
83 /// Do a local graph LTO with ThinLTO (only relevant for multiple codegen
87 /// Do a full crate graph LTO with "fat" LTO
91 #[derive(Clone, PartialEq, Hash)]
92 pub enum CrossLangLto {
93 LinkerPlugin(PathBuf),
99 pub fn enabled(&self) -> bool {
101 CrossLangLto::LinkerPlugin(_) |
102 CrossLangLto::LinkerPluginAuto => true,
103 CrossLangLto::Disabled => false,
108 #[derive(Clone, Copy, PartialEq, Hash)]
115 #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, PartialOrd, Ord, RustcEncodable, RustcDecodable)]
116 pub enum OutputType {
127 impl_stable_hash_via_hash!(OutputType);
130 fn is_compatible_with_codegen_units_and_single_output_file(&self) -> bool {
132 OutputType::Exe | OutputType::DepInfo => true,
134 | OutputType::Assembly
135 | OutputType::LlvmAssembly
138 | OutputType::Metadata => false,
142 fn shorthand(&self) -> &'static str {
144 OutputType::Bitcode => "llvm-bc",
145 OutputType::Assembly => "asm",
146 OutputType::LlvmAssembly => "llvm-ir",
147 OutputType::Mir => "mir",
148 OutputType::Object => "obj",
149 OutputType::Metadata => "metadata",
150 OutputType::Exe => "link",
151 OutputType::DepInfo => "dep-info",
155 fn from_shorthand(shorthand: &str) -> Option<Self> {
156 Some(match shorthand {
157 "asm" => OutputType::Assembly,
158 "llvm-ir" => OutputType::LlvmAssembly,
159 "mir" => OutputType::Mir,
160 "llvm-bc" => OutputType::Bitcode,
161 "obj" => OutputType::Object,
162 "metadata" => OutputType::Metadata,
163 "link" => OutputType::Exe,
164 "dep-info" => OutputType::DepInfo,
169 fn shorthands_display() -> String {
171 "`{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`",
172 OutputType::Bitcode.shorthand(),
173 OutputType::Assembly.shorthand(),
174 OutputType::LlvmAssembly.shorthand(),
175 OutputType::Mir.shorthand(),
176 OutputType::Object.shorthand(),
177 OutputType::Metadata.shorthand(),
178 OutputType::Exe.shorthand(),
179 OutputType::DepInfo.shorthand(),
183 pub fn extension(&self) -> &'static str {
185 OutputType::Bitcode => "bc",
186 OutputType::Assembly => "s",
187 OutputType::LlvmAssembly => "ll",
188 OutputType::Mir => "mir",
189 OutputType::Object => "o",
190 OutputType::Metadata => "rmeta",
191 OutputType::DepInfo => "d",
192 OutputType::Exe => "",
197 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
198 pub enum ErrorOutputType {
199 HumanReadable(ColorConfig),
204 impl Default for ErrorOutputType {
205 fn default() -> ErrorOutputType {
206 ErrorOutputType::HumanReadable(ColorConfig::Auto)
210 // Use tree-based collections to cheaply get a deterministic Hash implementation.
211 // DO NOT switch BTreeMap out for an unsorted container type! That would break
212 // dependency tracking for commandline arguments.
213 #[derive(Clone, Hash)]
214 pub struct OutputTypes(BTreeMap<OutputType, Option<PathBuf>>);
216 impl_stable_hash_via_hash!(OutputTypes);
219 pub fn new(entries: &[(OutputType, Option<PathBuf>)]) -> OutputTypes {
220 OutputTypes(BTreeMap::from_iter(
221 entries.iter().map(|&(k, ref v)| (k, v.clone())),
225 pub fn get(&self, key: &OutputType) -> Option<&Option<PathBuf>> {
229 pub fn contains_key(&self, key: &OutputType) -> bool {
230 self.0.contains_key(key)
233 pub fn keys<'a>(&'a self) -> BTreeMapKeysIter<'a, OutputType, Option<PathBuf>> {
237 pub fn values<'a>(&'a self) -> BTreeMapValuesIter<'a, OutputType, Option<PathBuf>> {
241 pub fn len(&self) -> usize {
245 // True if any of the output types require codegen or linking.
246 pub fn should_codegen(&self) -> bool {
247 self.0.keys().any(|k| match *k {
249 | OutputType::Assembly
250 | OutputType::LlvmAssembly
253 | OutputType::Exe => true,
254 OutputType::Metadata | OutputType::DepInfo => false,
259 // Use tree-based collections to cheaply get a deterministic Hash implementation.
260 // DO NOT switch BTreeMap or BTreeSet out for an unsorted container type! That
261 // would break dependency tracking for commandline arguments.
262 #[derive(Clone, Hash)]
263 pub struct Externs(BTreeMap<String, BTreeSet<String>>);
266 pub fn new(data: BTreeMap<String, BTreeSet<String>>) -> Externs {
270 pub fn get(&self, key: &str) -> Option<&BTreeSet<String>> {
274 pub fn iter<'a>(&'a self) -> BTreeMapIter<'a, String, BTreeSet<String>> {
279 macro_rules! hash_option {
280 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [UNTRACKED]) => ({});
281 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [TRACKED]) => ({
282 if $sub_hashes.insert(stringify!($opt_name),
283 $opt_expr as &dyn dep_tracking::DepTrackingHash).is_some() {
284 bug!("Duplicate key in CLI DepTrackingHash: {}", stringify!($opt_name))
290 [UNTRACKED_WITH_WARNING $warn_val:expr, $warn_text:expr, $error_format:expr]) => ({
291 if *$opt_expr == $warn_val {
292 early_warn($error_format, $warn_text)
297 macro_rules! top_level_options {
298 (pub struct Options { $(
299 $opt:ident : $t:ty [$dep_tracking_marker:ident $($warn_val:expr, $warn_text:expr)*],
307 pub fn dep_tracking_hash(&self) -> u64 {
308 let mut sub_hashes = BTreeMap::new();
313 [$dep_tracking_marker $($warn_val,
315 self.error_format)*]);
317 let mut hasher = DefaultHasher::new();
318 dep_tracking::stable_hash(sub_hashes,
327 // The top-level commandline options struct
329 // For each option, one has to specify how it behaves with regard to the
330 // dependency tracking system of incremental compilation. This is done via the
331 // square-bracketed directive after the field type. The options are:
334 // A change in the given field will cause the compiler to completely clear the
335 // incremental compilation cache before proceeding.
338 // Incremental compilation is not influenced by this option.
340 // [UNTRACKED_WITH_WARNING(val, warning)]
341 // The option is incompatible with incremental compilation in some way. If it
342 // has the value `val`, the string `warning` is emitted as a warning.
344 // If you add a new option to this struct or one of the sub-structs like
345 // CodegenOptions, think about how it influences incremental compilation. If in
346 // doubt, specify [TRACKED], which is always "correct" but might lead to
347 // unnecessary re-compilation.
350 // The crate config requested for the session, which may be combined
351 // with additional crate configurations during the compile process
352 crate_types: Vec<CrateType> [TRACKED],
353 optimize: OptLevel [TRACKED],
354 // Include the debug_assertions flag into dependency tracking, since it
355 // can influence whether overflow checks are done or not.
356 debug_assertions: bool [TRACKED],
357 debuginfo: DebugInfo [TRACKED],
358 lint_opts: Vec<(String, lint::Level)> [TRACKED],
359 lint_cap: Option<lint::Level> [TRACKED],
360 describe_lints: bool [UNTRACKED],
361 output_types: OutputTypes [TRACKED],
362 search_paths: SearchPaths [UNTRACKED],
363 libs: Vec<(String, Option<String>, Option<cstore::NativeLibraryKind>)> [TRACKED],
364 maybe_sysroot: Option<PathBuf> [TRACKED],
366 target_triple: TargetTriple [TRACKED],
368 test: bool [TRACKED],
369 error_format: ErrorOutputType [UNTRACKED],
371 // if Some, enable incremental compilation, using the given
372 // directory to store intermediate results
373 incremental: Option<PathBuf> [UNTRACKED],
375 debugging_opts: DebuggingOptions [TRACKED],
376 prints: Vec<PrintRequest> [UNTRACKED],
377 // Determines which borrow checker(s) to run. This is the parsed, sanitized
378 // version of `debugging_opts.borrowck`, which is just a plain string.
379 borrowck_mode: BorrowckMode [UNTRACKED],
380 cg: CodegenOptions [TRACKED],
381 externs: Externs [UNTRACKED],
382 crate_name: Option<String> [TRACKED],
383 // An optional name to use as the crate for std during std injection,
384 // written `extern crate name as std`. Defaults to `std`. Used by
385 // out-of-tree drivers.
386 alt_std_name: Option<String> [TRACKED],
387 // Indicates how the compiler should treat unstable features
388 unstable_features: UnstableFeatures [TRACKED],
390 // Indicates whether this run of the compiler is actually rustdoc. This
391 // is currently just a hack and will be removed eventually, so please
392 // try to not rely on this too much.
393 actually_rustdoc: bool [TRACKED],
395 // Specifications of codegen units / ThinLTO which are forced as a
396 // result of parsing command line options. These are not necessarily
397 // what rustc was invoked with, but massaged a bit to agree with
398 // commands like `--emit llvm-ir` which they're often incompatible with
399 // if we otherwise use the defaults of rustc.
400 cli_forced_codegen_units: Option<usize> [UNTRACKED],
401 cli_forced_thinlto_off: bool [UNTRACKED],
403 // Remap source path prefixes in all output (messages, object files, debug, etc)
404 remap_path_prefix: Vec<(PathBuf, PathBuf)> [UNTRACKED],
406 edition: Edition [TRACKED],
410 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
411 pub enum PrintRequest {
426 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
427 pub enum BorrowckMode {
435 /// Should we run the MIR-based borrow check, but also fall back
436 /// on the AST borrow check if the MIR-based one errors.
437 pub fn migrate(self) -> bool {
439 BorrowckMode::Ast => false,
440 BorrowckMode::Compare => false,
441 BorrowckMode::Mir => false,
442 BorrowckMode::Migrate => true,
446 /// Should we emit the AST-based borrow checker errors?
447 pub fn use_ast(self) -> bool {
449 BorrowckMode::Ast => true,
450 BorrowckMode::Compare => true,
451 BorrowckMode::Mir => false,
452 BorrowckMode::Migrate => false,
455 /// Should we emit the MIR-based borrow checker errors?
456 pub fn use_mir(self) -> bool {
458 BorrowckMode::Ast => false,
459 BorrowckMode::Compare => true,
460 BorrowckMode::Mir => true,
461 BorrowckMode::Migrate => true,
467 /// Load source from file
470 /// String that is shown in place of a filename
472 /// Anonymous source string
478 pub fn filestem(&self) -> String {
480 Input::File(ref ifile) => ifile.file_stem().unwrap().to_str().unwrap().to_string(),
481 Input::Str { .. } => "rust_out".to_string(),
485 pub fn get_input(&mut self) -> Option<&mut String> {
487 Input::File(_) => None,
488 Input::Str { ref mut input, .. } => Some(input),
493 #[derive(Clone, Hash)]
494 pub struct OutputFilenames {
495 pub out_directory: PathBuf,
496 pub out_filestem: String,
497 pub single_output_file: Option<PathBuf>,
499 pub outputs: OutputTypes,
502 impl_stable_hash_via_hash!(OutputFilenames);
504 pub const RUST_CGU_EXT: &str = "rcgu";
506 impl OutputFilenames {
507 pub fn path(&self, flavor: OutputType) -> PathBuf {
510 .and_then(|p| p.to_owned())
511 .or_else(|| self.single_output_file.clone())
512 .unwrap_or_else(|| self.temp_path(flavor, None))
515 /// Get the path where a compilation artifact of the given type for the
516 /// given codegen unit should be placed on disk. If codegen_unit_name is
517 /// None, a path distinct from those of any codegen unit will be generated.
518 pub fn temp_path(&self, flavor: OutputType, codegen_unit_name: Option<&str>) -> PathBuf {
519 let extension = flavor.extension();
520 self.temp_path_ext(extension, codegen_unit_name)
523 /// Like temp_path, but also supports things where there is no corresponding
524 /// OutputType, like no-opt-bitcode or lto-bitcode.
525 pub fn temp_path_ext(&self, ext: &str, codegen_unit_name: Option<&str>) -> PathBuf {
526 let base = self.out_directory.join(&self.filestem());
528 let mut extension = String::new();
530 if let Some(codegen_unit_name) = codegen_unit_name {
531 extension.push_str(codegen_unit_name);
535 if !extension.is_empty() {
536 extension.push_str(".");
537 extension.push_str(RUST_CGU_EXT);
538 extension.push_str(".");
541 extension.push_str(ext);
544 let path = base.with_extension(&extension[..]);
548 pub fn with_extension(&self, extension: &str) -> PathBuf {
550 .join(&self.filestem())
551 .with_extension(extension)
554 pub fn filestem(&self) -> String {
555 format!("{}{}", self.out_filestem, self.extra)
559 pub fn host_triple() -> &'static str {
560 // Get the host triple out of the build environment. This ensures that our
561 // idea of the host triple is the same as for the set of libraries we've
562 // actually built. We can't just take LLVM's host triple because they
563 // normalize all ix86 architectures to i386.
565 // Instead of grabbing the host triple (for the current host), we grab (at
566 // compile time) the target triple that this rustc is built with and
567 // calling that (at runtime) the host triple.
568 (option_env!("CFG_COMPILER_HOST_TRIPLE")).expect("CFG_COMPILER_HOST_TRIPLE")
571 impl Default for Options {
572 fn default() -> Options {
574 crate_types: Vec::new(),
575 optimize: OptLevel::No,
576 debuginfo: DebugInfo::None,
577 lint_opts: Vec::new(),
579 describe_lints: false,
580 output_types: OutputTypes(BTreeMap::new()),
581 search_paths: SearchPaths::new(),
583 target_triple: TargetTriple::from_triple(host_triple()),
586 debugging_opts: basic_debugging_options(),
588 borrowck_mode: BorrowckMode::Ast,
589 cg: basic_codegen_options(),
590 error_format: ErrorOutputType::default(),
591 externs: Externs(BTreeMap::new()),
595 unstable_features: UnstableFeatures::Disallow,
596 debug_assertions: true,
597 actually_rustdoc: false,
598 cli_forced_codegen_units: None,
599 cli_forced_thinlto_off: false,
600 remap_path_prefix: Vec::new(),
601 edition: DEFAULT_EDITION,
607 /// True if there is a reason to build the dep graph.
608 pub fn build_dep_graph(&self) -> bool {
609 self.incremental.is_some() || self.debugging_opts.dump_dep_graph
610 || self.debugging_opts.query_dep_graph
614 pub fn enable_dep_node_debug_strs(&self) -> bool {
615 cfg!(debug_assertions)
616 && (self.debugging_opts.query_dep_graph || self.debugging_opts.incremental_info)
619 pub fn file_path_mapping(&self) -> FilePathMapping {
620 FilePathMapping::new(self.remap_path_prefix.clone())
623 /// True if there will be an output file generated
624 pub fn will_create_output_file(&self) -> bool {
625 !self.debugging_opts.parse_only && // The file is just being parsed
626 !self.debugging_opts.ls // The file is just being queried
630 pub fn share_generics(&self) -> bool {
631 match self.debugging_opts.share_generics {
632 Some(setting) => setting,
634 self.incremental.is_some() ||
635 match self.optimize {
639 OptLevel::SizeMin => true,
641 OptLevel::Aggressive => false,
648 // The type of entry function, so
649 // users can have their own entry
651 #[derive(Copy, Clone, PartialEq)]
652 pub enum EntryFnType {
657 #[derive(Copy, PartialEq, PartialOrd, Clone, Ord, Eq, Hash, Debug)]
667 #[derive(Clone, Hash)]
674 pub fn is_empty(&self) -> bool {
676 Passes::Some(ref v) => v.is_empty(),
677 Passes::All => false,
682 /// Declare a macro that will define all CodegenOptions/DebuggingOptions fields and parsers all
683 /// at once. The goal of this macro is to define an interface that can be
684 /// programmatically used by the option parser in order to initialize the struct
685 /// without hardcoding field names all over the place.
687 /// The goal is to invoke this macro once with the correct fields, and then this
688 /// macro generates all necessary code. The main gotcha of this macro is the
689 /// cgsetters module which is a bunch of generated code to parse an option into
690 /// its respective field in the struct. There are a few hand-written parsers for
691 /// parsing specific types of values in this module.
692 macro_rules! options {
693 ($struct_name:ident, $setter_name:ident, $defaultfn:ident,
694 $buildfn:ident, $prefix:expr, $outputname:expr,
695 $stat:ident, $mod_desc:ident, $mod_set:ident,
696 $($opt:ident : $t:ty = (
699 [$dep_tracking_marker:ident $(($dep_warn_val:expr, $dep_warn_text:expr))*],
704 pub struct $struct_name { $(pub $opt: $t),* }
706 pub fn $defaultfn() -> $struct_name {
707 $struct_name { $($opt: $init),* }
710 pub fn $buildfn(matches: &getopts::Matches, error_format: ErrorOutputType) -> $struct_name
712 let mut op = $defaultfn();
713 for option in matches.opt_strs($prefix) {
714 let mut iter = option.splitn(2, '=');
715 let key = iter.next().unwrap();
716 let value = iter.next();
717 let option_to_lookup = key.replace("-", "_");
718 let mut found = false;
719 for &(candidate, setter, opt_type_desc, _) in $stat {
720 if option_to_lookup != candidate { continue }
721 if !setter(&mut op, value) {
722 match (value, opt_type_desc) {
723 (Some(..), None) => {
724 early_error(error_format, &format!("{} option `{}` takes no \
725 value", $outputname, key))
727 (None, Some(type_desc)) => {
728 early_error(error_format, &format!("{0} option `{1}` requires \
729 {2} ({3} {1}=<value>)",
733 (Some(value), Some(type_desc)) => {
734 early_error(error_format, &format!("incorrect value `{}` for {} \
735 option `{}` - {} was expected",
739 (None, None) => bug!()
746 early_error(error_format, &format!("unknown {} option: `{}`",
753 impl<'a> dep_tracking::DepTrackingHash for $struct_name {
755 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
756 let mut sub_hashes = BTreeMap::new();
761 [$dep_tracking_marker $($dep_warn_val,
765 dep_tracking::stable_hash(sub_hashes, hasher, error_format);
769 pub type $setter_name = fn(&mut $struct_name, v: Option<&str>) -> bool;
770 pub const $stat: &'static [(&'static str, $setter_name,
771 Option<&'static str>, &'static str)] =
772 &[ $( (stringify!($opt), $mod_set::$opt, $mod_desc::$parse, $desc) ),* ];
774 #[allow(non_upper_case_globals, dead_code)]
776 pub const parse_bool: Option<&'static str> = None;
777 pub const parse_opt_bool: Option<&'static str> =
778 Some("one of: `y`, `yes`, `on`, `n`, `no`, or `off`");
779 pub const parse_string: Option<&'static str> = Some("a string");
780 pub const parse_string_push: Option<&'static str> = Some("a string");
781 pub const parse_pathbuf_push: Option<&'static str> = Some("a path");
782 pub const parse_opt_string: Option<&'static str> = Some("a string");
783 pub const parse_opt_pathbuf: Option<&'static str> = Some("a path");
784 pub const parse_list: Option<&'static str> = Some("a space-separated list of strings");
785 pub const parse_opt_list: Option<&'static str> = Some("a space-separated list of strings");
786 pub const parse_uint: Option<&'static str> = Some("a number");
787 pub const parse_passes: Option<&'static str> =
788 Some("a space-separated list of passes, or `all`");
789 pub const parse_opt_uint: Option<&'static str> =
791 pub const parse_panic_strategy: Option<&'static str> =
792 Some("either `panic` or `abort`");
793 pub const parse_relro_level: Option<&'static str> =
794 Some("one of: `full`, `partial`, or `off`");
795 pub const parse_sanitizer: Option<&'static str> =
796 Some("one of: `address`, `leak`, `memory` or `thread`");
797 pub const parse_linker_flavor: Option<&'static str> =
798 Some(::rustc_target::spec::LinkerFlavor::one_of());
799 pub const parse_optimization_fuel: Option<&'static str> =
800 Some("crate=integer");
801 pub const parse_unpretty: Option<&'static str> =
802 Some("`string` or `string=string`");
803 pub const parse_lto: Option<&'static str> =
804 Some("one of `thin`, `fat`, or omitted");
805 pub const parse_cross_lang_lto: Option<&'static str> =
806 Some("either a boolean (`yes`, `no`, `on`, `off`, etc), \
807 or the path to the linker plugin");
812 use super::{$struct_name, Passes, Sanitizer, Lto, CrossLangLto};
813 use rustc_target::spec::{LinkerFlavor, PanicStrategy, RelroLevel};
814 use std::path::PathBuf;
817 pub fn $opt(cg: &mut $struct_name, v: Option<&str>) -> bool {
818 $parse(&mut cg.$opt, v)
822 fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool {
825 None => { *slot = true; true }
829 fn parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool {
833 "n" | "no" | "off" => {
836 "y" | "yes" | "on" => {
839 _ => { return false; }
844 None => { *slot = Some(true); true }
848 fn parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool {
850 Some(s) => { *slot = Some(s.to_string()); true },
855 fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, v: Option<&str>) -> bool {
857 Some(s) => { *slot = Some(PathBuf::from(s)); true },
862 fn parse_string(slot: &mut String, v: Option<&str>) -> bool {
864 Some(s) => { *slot = s.to_string(); true },
869 fn parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool {
871 Some(s) => { slot.push(s.to_string()); true },
876 fn parse_pathbuf_push(slot: &mut Vec<PathBuf>, v: Option<&str>) -> bool {
878 Some(s) => { slot.push(PathBuf::from(s)); true },
883 fn parse_list(slot: &mut Vec<String>, v: Option<&str>)
887 slot.extend(s.split_whitespace().map(|s| s.to_string()));
894 fn parse_opt_list(slot: &mut Option<Vec<String>>, v: Option<&str>)
898 let v = s.split_whitespace().map(|s| s.to_string()).collect();
906 fn parse_uint(slot: &mut usize, v: Option<&str>) -> bool {
907 match v.and_then(|s| s.parse().ok()) {
908 Some(i) => { *slot = i; true },
913 fn parse_opt_uint(slot: &mut Option<usize>, v: Option<&str>) -> bool {
915 Some(s) => { *slot = s.parse().ok(); slot.is_some() }
916 None => { *slot = None; false }
920 fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
927 let mut passes = vec![];
928 if parse_list(&mut passes, v) {
929 *slot = Passes::Some(passes);
938 fn parse_panic_strategy(slot: &mut Option<PanicStrategy>, v: Option<&str>) -> bool {
940 Some("unwind") => *slot = Some(PanicStrategy::Unwind),
941 Some("abort") => *slot = Some(PanicStrategy::Abort),
947 fn parse_relro_level(slot: &mut Option<RelroLevel>, v: Option<&str>) -> bool {
950 match s.parse::<RelroLevel>() {
951 Ok(level) => *slot = Some(level),
960 fn parse_sanitizer(slote: &mut Option<Sanitizer>, v: Option<&str>) -> bool {
962 Some("address") => *slote = Some(Sanitizer::Address),
963 Some("leak") => *slote = Some(Sanitizer::Leak),
964 Some("memory") => *slote = Some(Sanitizer::Memory),
965 Some("thread") => *slote = Some(Sanitizer::Thread),
971 fn parse_linker_flavor(slote: &mut Option<LinkerFlavor>, v: Option<&str>) -> bool {
972 match v.and_then(LinkerFlavor::from_str) {
973 Some(lf) => *slote = Some(lf),
979 fn parse_optimization_fuel(slot: &mut Option<(String, u64)>, v: Option<&str>) -> bool {
983 let parts = s.split('=').collect::<Vec<_>>();
984 if parts.len() != 2 { return false; }
985 let crate_name = parts[0].to_string();
986 let fuel = parts[1].parse::<u64>();
987 if fuel.is_err() { return false; }
988 *slot = Some((crate_name, fuel.unwrap()));
994 fn parse_unpretty(slot: &mut Option<String>, v: Option<&str>) -> bool {
997 Some(s) if s.split('=').count() <= 2 => {
998 *slot = Some(s.to_string());
1005 fn parse_lto(slot: &mut Lto, v: Option<&str>) -> bool {
1008 Some("thin") => Lto::Thin,
1009 Some("fat") => Lto::Fat,
1010 Some(_) => return false,
1015 fn parse_cross_lang_lto(slot: &mut CrossLangLto, v: Option<&str>) -> bool {
1017 let mut bool_arg = None;
1018 if parse_opt_bool(&mut bool_arg, v) {
1019 *slot = if bool_arg.unwrap() {
1020 CrossLangLto::LinkerPluginAuto
1022 CrossLangLto::Disabled
1029 None => CrossLangLto::LinkerPluginAuto,
1030 Some(path) => CrossLangLto::LinkerPlugin(PathBuf::from(path)),
1037 options! {CodegenOptions, CodegenSetter, basic_codegen_options,
1038 build_codegen_options, "C", "codegen",
1039 CG_OPTIONS, cg_type_desc, cgsetters,
1040 ar: Option<String> = (None, parse_opt_string, [UNTRACKED],
1041 "this option is deprecated and does nothing"),
1042 linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1043 "system linker to link outputs with"),
1044 link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1045 "a single extra argument to append to the linker invocation (can be used several times)"),
1046 link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1047 "extra arguments to append to the linker invocation (space separated)"),
1048 link_dead_code: bool = (false, parse_bool, [UNTRACKED],
1049 "don't let linker strip dead code (turning it on can be used for code coverage)"),
1050 lto: Lto = (Lto::No, parse_lto, [TRACKED],
1051 "perform LLVM link-time optimizations"),
1052 target_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1053 "select target processor (rustc --print target-cpus for details)"),
1054 target_feature: String = (String::new(), parse_string, [TRACKED],
1055 "target specific attributes (rustc --print target-features for details)"),
1056 passes: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1057 "a list of extra LLVM passes to run (space separated)"),
1058 llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1059 "a list of arguments to pass to llvm (space separated)"),
1060 save_temps: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1061 "`-C save-temps` might not produce all requested temporary products \
1062 when incremental compilation is enabled.")],
1063 "save all temporary output files during compilation"),
1064 rpath: bool = (false, parse_bool, [UNTRACKED],
1065 "set rpath values in libs/exes"),
1066 overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1067 "use overflow checks for integer arithmetic"),
1068 no_prepopulate_passes: bool = (false, parse_bool, [TRACKED],
1069 "don't pre-populate the pass manager with a list of passes"),
1070 no_vectorize_loops: bool = (false, parse_bool, [TRACKED],
1071 "don't run the loop vectorization optimization passes"),
1072 no_vectorize_slp: bool = (false, parse_bool, [TRACKED],
1073 "don't run LLVM's SLP vectorization pass"),
1074 soft_float: bool = (false, parse_bool, [TRACKED],
1075 "use soft float ABI (*eabihf targets only)"),
1076 prefer_dynamic: bool = (false, parse_bool, [TRACKED],
1077 "prefer dynamic linking to static linking"),
1078 no_integrated_as: bool = (false, parse_bool, [TRACKED],
1079 "use an external assembler rather than LLVM's integrated one"),
1080 no_redzone: Option<bool> = (None, parse_opt_bool, [TRACKED],
1081 "disable the use of the redzone"),
1082 relocation_model: Option<String> = (None, parse_opt_string, [TRACKED],
1083 "choose the relocation model to use (rustc --print relocation-models for details)"),
1084 code_model: Option<String> = (None, parse_opt_string, [TRACKED],
1085 "choose the code model to use (rustc --print code-models for details)"),
1086 metadata: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1087 "metadata to mangle symbol names with"),
1088 extra_filename: String = (String::new(), parse_string, [UNTRACKED],
1089 "extra data to put in each output filename"),
1090 codegen_units: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1091 "divide crate into N units to optimize in parallel"),
1092 remark: Passes = (Passes::Some(Vec::new()), parse_passes, [UNTRACKED],
1093 "print remarks for these optimization passes (space separated, or \"all\")"),
1094 no_stack_check: bool = (false, parse_bool, [UNTRACKED],
1095 "the --no-stack-check flag is deprecated and does nothing"),
1096 debuginfo: Option<usize> = (None, parse_opt_uint, [TRACKED],
1097 "debug info emission level, 0 = no debug info, 1 = line tables only, \
1098 2 = full debug info with variable and type information"),
1099 opt_level: Option<String> = (None, parse_opt_string, [TRACKED],
1100 "optimize with possible levels 0-3, s, or z"),
1101 force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
1102 "force use of the frame pointers"),
1103 debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
1104 "explicitly enable the cfg(debug_assertions) directive"),
1105 inline_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
1106 "set the threshold for inlining a function (default: 225)"),
1107 panic: Option<PanicStrategy> = (None, parse_panic_strategy,
1108 [TRACKED], "panic strategy to compile crate with"),
1109 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1110 "enable incremental compilation"),
1113 options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
1114 build_debugging_options, "Z", "debugging",
1115 DB_OPTIONS, db_type_desc, dbsetters,
1116 codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
1117 "the backend to use"),
1118 verbose: bool = (false, parse_bool, [UNTRACKED],
1119 "in general, enable more debug printouts"),
1120 span_free_formats: bool = (false, parse_bool, [UNTRACKED],
1121 "when debug-printing compiler state, do not include spans"), // o/w tests have closure@path
1122 identify_regions: bool = (false, parse_bool, [UNTRACKED],
1123 "make unnamed regions display as '# (where # is some non-ident unique id)"),
1124 emit_end_regions: bool = (false, parse_bool, [UNTRACKED],
1125 "emit EndRegion as part of MIR; enable transforms that solely process EndRegion"),
1126 borrowck: Option<String> = (None, parse_opt_string, [UNTRACKED],
1127 "select which borrowck is used (`ast`, `mir`, `migrate`, or `compare`)"),
1128 two_phase_borrows: bool = (false, parse_bool, [UNTRACKED],
1129 "use two-phase reserved/active distinction for `&mut` borrows in MIR borrowck"),
1130 two_phase_beyond_autoref: bool = (false, parse_bool, [UNTRACKED],
1131 "when using two-phase-borrows, allow two phases even for non-autoref `&mut` borrows"),
1132 time_passes: bool = (false, parse_bool, [UNTRACKED],
1133 "measure time of each rustc pass"),
1134 count_llvm_insns: bool = (false, parse_bool,
1135 [UNTRACKED_WITH_WARNING(true,
1136 "The output generated by `-Z count_llvm_insns` might not be reliable \
1137 when used with incremental compilation")],
1138 "count where LLVM instrs originate"),
1139 time_llvm_passes: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1140 "The output of `-Z time-llvm-passes` will only reflect timings of \
1141 re-codegened modules when used with incremental compilation" )],
1142 "measure time of each LLVM pass"),
1143 input_stats: bool = (false, parse_bool, [UNTRACKED],
1144 "gather statistics about the input"),
1145 codegen_stats: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1146 "The output of `-Z codegen-stats` might not be accurate when incremental \
1147 compilation is enabled")],
1148 "gather codegen statistics"),
1149 asm_comments: bool = (false, parse_bool, [TRACKED],
1150 "generate comments into the assembly (may change behavior)"),
1151 verify_llvm_ir: bool = (false, parse_bool, [TRACKED],
1153 borrowck_stats: bool = (false, parse_bool, [UNTRACKED],
1154 "gather borrowck statistics"),
1155 no_landing_pads: bool = (false, parse_bool, [TRACKED],
1156 "omit landing pads for unwinding"),
1157 fewer_names: bool = (false, parse_bool, [TRACKED],
1158 "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR)"),
1159 meta_stats: bool = (false, parse_bool, [UNTRACKED],
1160 "gather metadata statistics"),
1161 print_link_args: bool = (false, parse_bool, [UNTRACKED],
1162 "print the arguments passed to the linker"),
1163 print_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1164 "prints the llvm optimization passes being run"),
1165 ast_json: bool = (false, parse_bool, [UNTRACKED],
1166 "print the AST as JSON and halt"),
1167 query_threads: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1168 "execute queries on a thread pool with N threads"),
1169 ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED],
1170 "print the pre-expansion AST as JSON and halt"),
1171 ls: bool = (false, parse_bool, [UNTRACKED],
1172 "list the symbols defined by a library crate"),
1173 save_analysis: bool = (false, parse_bool, [UNTRACKED],
1174 "write syntax and type analysis (in JSON format) information, in \
1175 addition to normal output"),
1176 flowgraph_print_loans: bool = (false, parse_bool, [UNTRACKED],
1177 "include loan analysis data in -Z unpretty flowgraph output"),
1178 flowgraph_print_moves: bool = (false, parse_bool, [UNTRACKED],
1179 "include move analysis data in -Z unpretty flowgraph output"),
1180 flowgraph_print_assigns: bool = (false, parse_bool, [UNTRACKED],
1181 "include assignment analysis data in -Z unpretty flowgraph output"),
1182 flowgraph_print_all: bool = (false, parse_bool, [UNTRACKED],
1183 "include all dataflow analysis data in -Z unpretty flowgraph output"),
1184 print_region_graph: bool = (false, parse_bool, [UNTRACKED],
1185 "prints region inference graph. \
1186 Use with RUST_REGION_GRAPH=help for more info"),
1187 parse_only: bool = (false, parse_bool, [UNTRACKED],
1188 "parse only; do not compile, assemble, or link"),
1189 no_codegen: bool = (false, parse_bool, [TRACKED],
1190 "run all passes except codegen; no output"),
1191 treat_err_as_bug: bool = (false, parse_bool, [TRACKED],
1192 "treat all errors that occur as bugs"),
1193 report_delayed_bugs: bool = (false, parse_bool, [TRACKED],
1194 "immediately print bugs registered with `delay_span_bug`"),
1195 external_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1196 "show macro backtraces even for non-local macros"),
1197 teach: bool = (false, parse_bool, [TRACKED],
1198 "show extended diagnostic help"),
1199 continue_parse_after_error: bool = (false, parse_bool, [TRACKED],
1200 "attempt to recover from parse errors (experimental)"),
1201 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1202 "enable incremental compilation (experimental)"),
1203 incremental_queries: bool = (true, parse_bool, [UNTRACKED],
1204 "enable incremental compilation support for queries (experimental)"),
1205 incremental_info: bool = (false, parse_bool, [UNTRACKED],
1206 "print high-level information about incremental reuse (or the lack thereof)"),
1207 incremental_dump_hash: bool = (false, parse_bool, [UNTRACKED],
1208 "dump hash information in textual format to stdout"),
1209 incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
1210 "verify incr. comp. hashes of green query instances"),
1211 incremental_ignore_spans: bool = (false, parse_bool, [UNTRACKED],
1212 "ignore spans during ICH computation -- used for testing"),
1213 dump_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1214 "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv)"),
1215 query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1216 "enable queries of the dependency graph for regression testing"),
1217 profile_queries: bool = (false, parse_bool, [UNTRACKED],
1218 "trace and profile the queries of the incremental compilation framework"),
1219 profile_queries_and_keys: bool = (false, parse_bool, [UNTRACKED],
1220 "trace and profile the queries and keys of the incremental compilation framework"),
1221 no_analysis: bool = (false, parse_bool, [UNTRACKED],
1222 "parse and expand the source, but run no analysis"),
1223 extra_plugins: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1224 "load extra plugins"),
1225 unstable_options: bool = (false, parse_bool, [UNTRACKED],
1226 "adds unstable command line options to rustc interface"),
1227 force_overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1228 "force overflow checks on or off"),
1229 trace_macros: bool = (false, parse_bool, [UNTRACKED],
1230 "for every macro invocation, print its name and arguments"),
1231 debug_macros: bool = (false, parse_bool, [TRACKED],
1232 "emit line numbers debug info inside macros"),
1233 keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED],
1234 "don't clear the hygiene data after analysis"),
1235 keep_ast: bool = (false, parse_bool, [UNTRACKED],
1236 "keep the AST after lowering it to HIR"),
1237 show_span: Option<String> = (None, parse_opt_string, [TRACKED],
1238 "show spans for compiler debugging (expr|pat|ty)"),
1239 print_type_sizes: bool = (false, parse_bool, [UNTRACKED],
1240 "print layout information for each type encountered"),
1241 print_mono_items: Option<String> = (None, parse_opt_string, [UNTRACKED],
1242 "print the result of the monomorphization collection pass"),
1243 mir_opt_level: usize = (1, parse_uint, [TRACKED],
1244 "set the MIR optimization level (0-3, default: 1)"),
1245 mutable_noalias: Option<bool> = (None, parse_opt_bool, [TRACKED],
1246 "emit noalias metadata for mutable references (default: yes on LLVM >= 6)"),
1247 arg_align_attributes: bool = (false, parse_bool, [TRACKED],
1248 "emit align metadata for reference arguments"),
1249 dump_mir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1250 "dump MIR state at various points in transforms"),
1251 dump_mir_dir: String = (String::from("mir_dump"), parse_string, [UNTRACKED],
1252 "the directory the MIR is dumped into"),
1253 dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED],
1254 "in addition to `.mir` files, create graphviz `.dot` files"),
1255 dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED],
1256 "if set, exclude the pass number when dumping MIR (used in tests)"),
1257 mir_emit_validate: usize = (0, parse_uint, [TRACKED],
1258 "emit Validate MIR statements, interpreted e.g. by miri (0: do not emit; 1: if function \
1259 contains unsafe block, only validate arguments; 2: always emit full validation)"),
1260 perf_stats: bool = (false, parse_bool, [UNTRACKED],
1261 "print some performance-related statistics"),
1262 hir_stats: bool = (false, parse_bool, [UNTRACKED],
1263 "print some statistics about AST and HIR"),
1264 mir_stats: bool = (false, parse_bool, [UNTRACKED],
1265 "print some statistics about MIR"),
1266 always_encode_mir: bool = (false, parse_bool, [TRACKED],
1267 "encode MIR of all functions into the crate metadata"),
1268 osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
1269 "pass `-install_name @rpath/...` to the macOS linker"),
1270 sanitizer: Option<Sanitizer> = (None, parse_sanitizer, [TRACKED],
1272 linker_flavor: Option<LinkerFlavor> = (None, parse_linker_flavor, [UNTRACKED],
1274 fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
1275 "set the optimization fuel quota for a crate"),
1276 print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
1277 "make Rustc print the total optimization fuel used by a crate"),
1278 force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
1279 "force all crates to be `rustc_private` unstable"),
1280 pre_link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1281 "a single extra argument to prepend the linker invocation (can be used several times)"),
1282 pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1283 "extra arguments to prepend to the linker invocation (space separated)"),
1284 profile: bool = (false, parse_bool, [TRACKED],
1285 "insert profiling code"),
1286 pgo_gen: Option<String> = (None, parse_opt_string, [TRACKED],
1287 "Generate PGO profile data, to a given file, or to the default \
1288 location if it's empty."),
1289 pgo_use: String = (String::new(), parse_string, [TRACKED],
1290 "Use PGO profile data from the given profile file."),
1291 disable_instrumentation_preinliner: bool =
1292 (false, parse_bool, [TRACKED], "Disable the instrumentation pre-inliner, \
1293 useful for profiling / PGO."),
1294 relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
1295 "choose which RELRO level to use"),
1296 disable_ast_check_for_mutation_in_guard: bool = (false, parse_bool, [UNTRACKED],
1297 "skip AST-based mutation-in-guard check (mir-borrowck provides more precise check)"),
1298 nll_subminimal_causes: bool = (false, parse_bool, [UNTRACKED],
1299 "when tracking region error causes, accept subminimal results for faster execution."),
1300 nll_facts: bool = (false, parse_bool, [UNTRACKED],
1301 "dump facts from NLL analysis into side files"),
1302 disable_nll_user_type_assert: bool = (false, parse_bool, [UNTRACKED],
1303 "disable user provided type assertion in NLL"),
1304 nll_dont_emit_read_for_match: bool = (false, parse_bool, [UNTRACKED],
1305 "in match codegen, do not include ReadForMatch statements (used by mir-borrowck)"),
1306 polonius: bool = (false, parse_bool, [UNTRACKED],
1307 "enable polonius-based borrow-checker"),
1308 codegen_time_graph: bool = (false, parse_bool, [UNTRACKED],
1309 "generate a graphical HTML report of time spent in codegen and LLVM"),
1310 thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
1311 "enable ThinLTO when possible"),
1312 inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
1313 "control whether #[inline] functions are in all cgus"),
1314 tls_model: Option<String> = (None, parse_opt_string, [TRACKED],
1315 "choose the TLS model to use (rustc --print tls-models for details)"),
1316 saturating_float_casts: bool = (false, parse_bool, [TRACKED],
1317 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1318 the max/min integer respectively, and NaN is mapped to 0"),
1319 lower_128bit_ops: Option<bool> = (None, parse_opt_bool, [TRACKED],
1320 "rewrite operators on i128 and u128 into lang item calls (typically provided \
1321 by compiler-builtins) so codegen doesn't need to support them,
1322 overriding the default for the current target"),
1323 human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
1324 "generate human-readable, predictable names for codegen units"),
1325 dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
1326 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
1328 unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
1329 "Present the input source, unstable (and less-pretty) variants;
1330 valid types are any of the types for `--pretty`, as well as:
1331 `flowgraph=<nodeid>` (graphviz formatted flowgraph for node),
1332 `everybody_loops` (all function bodies replaced with `loop {}`),
1333 `hir` (the HIR), `hir,identified`, or
1334 `hir,typed` (HIR with types for each node)."),
1335 run_dsymutil: Option<bool> = (None, parse_opt_bool, [TRACKED],
1336 "run `dsymutil` and delete intermediate object files"),
1337 ui_testing: bool = (false, parse_bool, [UNTRACKED],
1338 "format compiler diagnostics in a way that's better suitable for UI testing"),
1339 embed_bitcode: bool = (false, parse_bool, [TRACKED],
1340 "embed LLVM bitcode in object files"),
1341 strip_debuginfo_if_disabled: Option<bool> = (None, parse_opt_bool, [TRACKED],
1342 "tell the linker to strip debuginfo when building without debuginfo enabled."),
1343 share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
1344 "make the current crate share its generic instantiations"),
1345 chalk: bool = (false, parse_bool, [TRACKED],
1346 "enable the experimental Chalk-based trait solving engine"),
1347 cross_lang_lto: CrossLangLto = (CrossLangLto::Disabled, parse_cross_lang_lto, [TRACKED],
1348 "generate build artifacts that are compatible with linker-based LTO."),
1349 no_parallel_llvm: bool = (false, parse_bool, [UNTRACKED],
1350 "don't run LLVM in parallel (while keeping codegen-units and ThinLTO)"),
1351 no_leak_check: bool = (false, parse_bool, [UNTRACKED],
1352 "disables the 'leak check' for subtyping; unsound, but useful for tests"),
1353 crate_attr: Vec<String> = (Vec::new(), parse_string_push, [TRACKED],
1354 "inject the given attribute in the crate"),
1355 self_profile: bool = (false, parse_bool, [UNTRACKED],
1356 "run the self profiler"),
1357 profile_json: bool = (false, parse_bool, [UNTRACKED],
1358 "output a json file with profiler results"),
1361 pub fn default_lib_output() -> CrateType {
1365 pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
1366 let end = &sess.target.target.target_endian;
1367 let arch = &sess.target.target.arch;
1368 let wordsz = &sess.target.target.target_pointer_width;
1369 let os = &sess.target.target.target_os;
1370 let env = &sess.target.target.target_env;
1371 let vendor = &sess.target.target.target_vendor;
1372 let min_atomic_width = sess.target.target.min_atomic_width();
1373 let max_atomic_width = sess.target.target.max_atomic_width();
1374 let atomic_cas = sess.target.target.options.atomic_cas;
1376 let mut ret = FxHashSet::default();
1378 ret.insert((Symbol::intern("target_os"), Some(Symbol::intern(os))));
1379 if let Some(ref fam) = sess.target.target.options.target_family {
1380 ret.insert((Symbol::intern("target_family"), Some(Symbol::intern(fam))));
1381 if fam == "windows" || fam == "unix" {
1382 ret.insert((Symbol::intern(fam), None));
1385 ret.insert((Symbol::intern("target_arch"), Some(Symbol::intern(arch))));
1386 ret.insert((Symbol::intern("target_endian"), Some(Symbol::intern(end))));
1388 Symbol::intern("target_pointer_width"),
1389 Some(Symbol::intern(wordsz)),
1391 ret.insert((Symbol::intern("target_env"), Some(Symbol::intern(env))));
1393 Symbol::intern("target_vendor"),
1394 Some(Symbol::intern(vendor)),
1396 if sess.target.target.options.has_elf_tls {
1397 ret.insert((Symbol::intern("target_thread_local"), None));
1399 for &i in &[8, 16, 32, 64, 128] {
1400 if i >= min_atomic_width && i <= max_atomic_width {
1401 let s = i.to_string();
1403 Symbol::intern("target_has_atomic"),
1404 Some(Symbol::intern(&s)),
1408 Symbol::intern("target_has_atomic"),
1409 Some(Symbol::intern("ptr")),
1415 ret.insert((Symbol::intern("target_has_atomic"), Some(Symbol::intern("cas"))));
1417 if sess.opts.debug_assertions {
1418 ret.insert((Symbol::intern("debug_assertions"), None));
1420 if sess.opts.crate_types.contains(&CrateType::ProcMacro) {
1421 ret.insert((Symbol::intern("proc_macro"), None));
1426 pub fn build_configuration(sess: &Session, mut user_cfg: ast::CrateConfig) -> ast::CrateConfig {
1427 // Combine the configuration requested by the session (command line) with
1428 // some default and generated configuration items
1429 let default_cfg = default_configuration(sess);
1430 // If the user wants a test runner, then add the test cfg
1432 user_cfg.insert((Symbol::intern("test"), None));
1434 user_cfg.extend(default_cfg.iter().cloned());
1438 pub fn build_target_config(opts: &Options, sp: &Handler) -> Config {
1439 let target = match Target::search(&opts.target_triple) {
1442 sp.struct_fatal(&format!("Error loading target specification: {}", e))
1443 .help("Use `--print target-list` for a list of built-in targets")
1449 let (isize_ty, usize_ty) = match &target.target_pointer_width[..] {
1450 "16" => (ast::IntTy::I16, ast::UintTy::U16),
1451 "32" => (ast::IntTy::I32, ast::UintTy::U32),
1452 "64" => (ast::IntTy::I64, ast::UintTy::U64),
1453 w => sp.fatal(&format!(
1454 "target specification was invalid: \
1455 unrecognized target-pointer-width {}",
1467 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
1468 pub enum OptionStability {
1474 pub struct RustcOptGroup {
1475 pub apply: Box<dyn Fn(&mut getopts::Options) -> &mut getopts::Options>,
1476 pub name: &'static str,
1477 pub stability: OptionStability,
1480 impl RustcOptGroup {
1481 pub fn is_stable(&self) -> bool {
1482 self.stability == OptionStability::Stable
1485 pub fn stable<F>(name: &'static str, f: F) -> RustcOptGroup
1487 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1492 stability: OptionStability::Stable,
1496 pub fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup
1498 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1503 stability: OptionStability::Unstable,
1508 // The `opt` local module holds wrappers around the `getopts` API that
1509 // adds extra rustc-specific metadata to each option; such metadata
1510 // is exposed by . The public
1511 // functions below ending with `_u` are the functions that return
1512 // *unstable* options, i.e. options that are only enabled when the
1513 // user also passes the `-Z unstable-options` debugging flag.
1515 // The `fn opt_u` etc below are written so that we can use them
1516 // in the future; do not warn about them not being used right now.
1517 #![allow(dead_code)]
1520 use super::RustcOptGroup;
1522 pub type R = RustcOptGroup;
1523 pub type S = &'static str;
1525 fn stable<F>(name: S, f: F) -> R
1527 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1529 RustcOptGroup::stable(name, f)
1532 fn unstable<F>(name: S, f: F) -> R
1534 F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1536 RustcOptGroup::unstable(name, f)
1539 fn longer(a: S, b: S) -> S {
1540 if a.len() > b.len() {
1547 pub fn opt_s(a: S, b: S, c: S, d: S) -> R {
1548 stable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1550 pub fn multi_s(a: S, b: S, c: S, d: S) -> R {
1551 stable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1553 pub fn flag_s(a: S, b: S, c: S) -> R {
1554 stable(longer(a, b), move |opts| opts.optflag(a, b, c))
1556 pub fn flagopt_s(a: S, b: S, c: S, d: S) -> R {
1557 stable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1559 pub fn flagmulti_s(a: S, b: S, c: S) -> R {
1560 stable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1563 pub fn opt(a: S, b: S, c: S, d: S) -> R {
1564 unstable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1566 pub fn multi(a: S, b: S, c: S, d: S) -> R {
1567 unstable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1569 pub fn flag(a: S, b: S, c: S) -> R {
1570 unstable(longer(a, b), move |opts| opts.optflag(a, b, c))
1572 pub fn flagopt(a: S, b: S, c: S, d: S) -> R {
1573 unstable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1575 pub fn flagmulti(a: S, b: S, c: S) -> R {
1576 unstable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1580 /// Returns the "short" subset of the rustc command line options,
1581 /// including metadata for each option, such as whether the option is
1582 /// part of the stable long-term interface for rustc.
1583 pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
1585 opt::flag_s("h", "help", "Display this message"),
1586 opt::multi_s("", "cfg", "Configure the compilation environment", "SPEC"),
1590 "Add a directory to the library search path. The
1591 optional KIND can be one of dependency, crate, native,
1592 framework or all (the default).",
1598 "Link the generated crate(s) to the specified native
1599 library NAME. The optional KIND can be one of
1600 static, dylib, or framework. If omitted, dylib is
1607 "Comma separated list of types of crates
1608 for the compiler to emit",
1609 "[bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]",
1614 "Specify the name of the crate being built",
1620 "Comma separated list of types of output for \
1621 the compiler to emit",
1622 "[asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]",
1627 "Comma separated list of compiler information to \
1629 "[crate-name|file-names|sysroot|cfg|target-list|\
1630 target-cpus|target-features|relocation-models|\
1631 code-models|tls-models|target-spec-json|native-static-libs]",
1633 opt::flagmulti_s("g", "", "Equivalent to -C debuginfo=2"),
1634 opt::flagmulti_s("O", "", "Equivalent to -C opt-level=2"),
1635 opt::opt_s("o", "", "Write output to <filename>", "FILENAME"),
1639 "Write output to compiler-chosen filename \
1646 "Provide a detailed explanation of an error \
1650 opt::flag_s("", "test", "Build a test harness"),
1654 "Target triple for which the code is compiled",
1657 opt::multi_s("W", "warn", "Set lint warnings", "OPT"),
1658 opt::multi_s("A", "allow", "Set lint allowed", "OPT"),
1659 opt::multi_s("D", "deny", "Set lint denied", "OPT"),
1660 opt::multi_s("F", "forbid", "Set lint forbidden", "OPT"),
1664 "Set the most restrictive lint level. \
1665 More restrictive lints are capped at this \
1669 opt::multi_s("C", "codegen", "Set a codegen option", "OPT[=VALUE]"),
1670 opt::flag_s("V", "version", "Print version info and exit"),
1671 opt::flag_s("v", "verbose", "Use verbose output"),
1675 /// Returns all rustc command line options, including metadata for
1676 /// each option, such as whether the option is part of the stable
1677 /// long-term interface for rustc.
1678 pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
1679 let mut opts = rustc_short_optgroups();
1684 "Specify where an external rust library is located",
1687 opt::opt_s("", "sysroot", "Override the system root", "PATH"),
1688 opt::multi("Z", "", "Set internal debugging options", "FLAG"),
1692 "How errors and other messages are produced",
1698 "Configure coloring of output:
1699 auto = colorize, if output goes to a tty (default);
1700 always = always colorize output;
1701 never = never colorize output",
1702 "auto|always|never",
1707 "Pretty-print the input instead of compiling;
1708 valid types are: `normal` (un-annotated source),
1709 `expanded` (crates expanded), or
1710 `expanded,identified` (fully parenthesized, AST nodes with IDs).",
1716 "Specify which edition of the compiler to use when compiling code.",
1721 "remap-path-prefix",
1722 "Remap source names in all output (compiler messages and output files)",
1729 // Convert strings provided as --cfg [cfgspec] into a crate_cfg
1730 pub fn parse_cfgspecs(cfgspecs: Vec<String>) -> ast::CrateConfig {
1734 let sess = parse::ParseSess::new(FilePathMapping::empty());
1736 parse::new_parser_from_source_str(&sess, FileName::CfgSpec, s.to_string());
1738 let meta_item = panictry!(parser.parse_meta_item());
1740 if parser.token != token::Eof {
1742 ErrorOutputType::default(),
1743 &format!("invalid --cfg argument: {}", s),
1745 } else if meta_item.is_meta_item_list() {
1747 "invalid predicate in --cfg command line argument: `{}`",
1750 early_error(ErrorOutputType::default(), &msg)
1753 (meta_item.name(), meta_item.value_str())
1755 .collect::<ast::CrateConfig>()
1758 pub fn get_cmd_lint_options(matches: &getopts::Matches,
1759 error_format: ErrorOutputType)
1760 -> (Vec<(String, lint::Level)>, bool, Option<lint::Level>) {
1761 let mut lint_opts = vec![];
1762 let mut describe_lints = false;
1764 for &level in &[lint::Allow, lint::Warn, lint::Deny, lint::Forbid] {
1765 for lint_name in matches.opt_strs(level.as_str()) {
1766 if lint_name == "help" {
1767 describe_lints = true;
1769 lint_opts.push((lint_name.replace("-", "_"), level));
1774 let lint_cap = matches.opt_str("cap-lints").map(|cap| {
1775 lint::Level::from_str(&cap)
1776 .unwrap_or_else(|| early_error(error_format, &format!("unknown lint level: `{}`", cap)))
1778 (lint_opts, describe_lints, lint_cap)
1781 pub fn build_session_options_and_crate_config(
1782 matches: &getopts::Matches,
1783 ) -> (Options, ast::CrateConfig) {
1784 let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
1785 Some("auto") => ColorConfig::Auto,
1786 Some("always") => ColorConfig::Always,
1787 Some("never") => ColorConfig::Never,
1789 None => ColorConfig::Auto,
1791 Some(arg) => early_error(
1792 ErrorOutputType::default(),
1794 "argument for --color must be auto, \
1795 always or never (instead was `{}`)",
1801 let edition = match matches.opt_str("edition") {
1802 Some(arg) => match Edition::from_str(&arg){
1803 Ok(edition) => edition,
1804 Err(_) => early_error(
1805 ErrorOutputType::default(),
1807 "argument for --edition must be one of: \
1808 {}. (instead was `{}`)",
1814 None => DEFAULT_EDITION,
1817 if !edition.is_stable() && !nightly_options::is_nightly_build() {
1819 ErrorOutputType::default(),
1821 "Edition {} is unstable and only \
1822 available for nightly builds of rustc.",
1829 // We need the opts_present check because the driver will send us Matches
1830 // with only stable options if no unstable options are used. Since error-format
1831 // is unstable, it will not be present. We have to use opts_present not
1832 // opt_present because the latter will panic.
1833 let error_format = if matches.opts_present(&["error-format".to_owned()]) {
1834 match matches.opt_str("error-format").as_ref().map(|s| &s[..]) {
1835 Some("human") => ErrorOutputType::HumanReadable(color),
1836 Some("json") => ErrorOutputType::Json(false),
1837 Some("pretty-json") => ErrorOutputType::Json(true),
1838 Some("short") => ErrorOutputType::Short(color),
1839 None => ErrorOutputType::HumanReadable(color),
1841 Some(arg) => early_error(
1842 ErrorOutputType::HumanReadable(color),
1844 "argument for --error-format must be `human`, `json` or \
1845 `short` (instead was `{}`)",
1851 ErrorOutputType::HumanReadable(color)
1854 let unparsed_crate_types = matches.opt_strs("crate-type");
1855 let crate_types = parse_crate_types_from_list(unparsed_crate_types)
1856 .unwrap_or_else(|e| early_error(error_format, &e[..]));
1858 let (lint_opts, describe_lints, lint_cap) = get_cmd_lint_options(matches, error_format);
1860 let mut debugging_opts = build_debugging_options(matches, error_format);
1862 if !debugging_opts.unstable_options && error_format == ErrorOutputType::Json(true) {
1864 ErrorOutputType::Json(false),
1865 "--error-format=pretty-json is unstable",
1869 if debugging_opts.pgo_gen.is_some() && !debugging_opts.pgo_use.is_empty() {
1872 "options `-Z pgo-gen` and `-Z pgo-use` are exclusive",
1876 let mut output_types = BTreeMap::new();
1877 if !debugging_opts.parse_only {
1878 for list in matches.opt_strs("emit") {
1879 for output_type in list.split(',') {
1880 let mut parts = output_type.splitn(2, '=');
1881 let shorthand = parts.next().unwrap();
1882 let output_type = match OutputType::from_shorthand(shorthand) {
1883 Some(output_type) => output_type,
1884 None => early_error(
1887 "unknown emission type: `{}` - expected one of: {}",
1889 OutputType::shorthands_display(),
1893 let path = parts.next().map(PathBuf::from);
1894 output_types.insert(output_type, path);
1898 if output_types.is_empty() {
1899 output_types.insert(OutputType::Exe, None);
1902 let mut cg = build_codegen_options(matches, error_format);
1903 let mut codegen_units = cg.codegen_units;
1904 let mut disable_thinlto = false;
1906 // Issue #30063: if user requests llvm-related output to one
1907 // particular path, disable codegen-units.
1908 let incompatible: Vec<_> = output_types
1910 .map(|ot_path| ot_path.0)
1911 .filter(|ot| !ot.is_compatible_with_codegen_units_and_single_output_file())
1912 .map(|ot| ot.shorthand())
1914 if !incompatible.is_empty() {
1915 match codegen_units {
1916 Some(n) if n > 1 => {
1917 if matches.opt_present("o") {
1918 for ot in &incompatible {
1922 "--emit={} with -o incompatible with \
1923 -C codegen-units=N for N > 1",
1928 early_warn(error_format, "resetting to default -C codegen-units=1");
1929 codegen_units = Some(1);
1930 disable_thinlto = true;
1934 codegen_units = Some(1);
1935 disable_thinlto = true;
1940 if debugging_opts.query_threads == Some(0) {
1943 "Value for query threads must be a positive nonzero integer",
1947 if debugging_opts.query_threads.unwrap_or(1) > 1 && debugging_opts.fuel.is_some() {
1950 "Optimization fuel is incompatible with multiple query threads",
1954 if codegen_units == Some(0) {
1957 "Value for codegen units must be a positive nonzero integer",
1961 let incremental = match (&debugging_opts.incremental, &cg.incremental) {
1962 (&Some(ref path1), &Some(ref path2)) => {
1967 "conflicting paths for `-Z incremental` and \
1968 `-C incremental` specified: {} versus {}",
1976 (&Some(ref path), &None) => Some(path),
1977 (&None, &Some(ref path)) => Some(path),
1978 (&None, &None) => None,
1979 }.map(|m| PathBuf::from(m));
1981 if debugging_opts.profile && incremental.is_some() {
1984 "can't instrument with gcov profiling when compiling incrementally",
1988 let mut prints = Vec::<PrintRequest>::new();
1989 if cg.target_cpu.as_ref().map_or(false, |s| s == "help") {
1990 prints.push(PrintRequest::TargetCPUs);
1991 cg.target_cpu = None;
1993 if cg.target_feature == "help" {
1994 prints.push(PrintRequest::TargetFeatures);
1995 cg.target_feature = String::new();
1997 if cg.relocation_model.as_ref().map_or(false, |s| s == "help") {
1998 prints.push(PrintRequest::RelocationModels);
1999 cg.relocation_model = None;
2001 if cg.code_model.as_ref().map_or(false, |s| s == "help") {
2002 prints.push(PrintRequest::CodeModels);
2003 cg.code_model = None;
2008 .map_or(false, |s| s == "help")
2010 prints.push(PrintRequest::TlsModels);
2011 debugging_opts.tls_model = None;
2016 let sysroot_opt = matches.opt_str("sysroot").map(|m| PathBuf::from(&m));
2017 let target_triple = if let Some(target) = matches.opt_str("target") {
2018 if target.ends_with(".json") {
2019 let path = Path::new(&target);
2020 match TargetTriple::from_path(&path) {
2021 Ok(triple) => triple,
2023 early_error(error_format, &format!("target file {:?} does not exist", path))
2027 TargetTriple::TargetTriple(target)
2030 TargetTriple::from_triple(host_triple())
2033 if matches.opt_present("O") {
2034 if cg.opt_level.is_some() {
2035 early_error(error_format, "-O and -C opt-level both provided");
2039 match cg.opt_level.as_ref().map(String::as_ref) {
2040 None => OptLevel::No,
2041 Some("0") => OptLevel::No,
2042 Some("1") => OptLevel::Less,
2043 Some("2") => OptLevel::Default,
2044 Some("3") => OptLevel::Aggressive,
2045 Some("s") => OptLevel::Size,
2046 Some("z") => OptLevel::SizeMin,
2051 "optimization level needs to be \
2052 between 0-3 (instead was `{}`)",
2060 let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);
2061 let debuginfo = if matches.opt_present("g") {
2062 if cg.debuginfo.is_some() {
2063 early_error(error_format, "-g and -C debuginfo both provided");
2067 match cg.debuginfo {
2068 None | Some(0) => DebugInfo::None,
2069 Some(1) => DebugInfo::Limited,
2070 Some(2) => DebugInfo::Full,
2075 "debug info level needs to be between \
2076 0-2 (instead was `{}`)",
2084 let mut search_paths = SearchPaths::new();
2085 for s in &matches.opt_strs("L") {
2086 search_paths.add_path(&s[..], error_format);
2093 // Parse string of the form "[KIND=]lib[:new_name]",
2094 // where KIND is one of "dylib", "framework", "static".
2095 let mut parts = s.splitn(2, '=');
2096 let kind = parts.next().unwrap();
2097 let (name, kind) = match (parts.next(), kind) {
2098 (None, name) => (name, None),
2099 (Some(name), "dylib") => (name, Some(cstore::NativeUnknown)),
2100 (Some(name), "framework") => (name, Some(cstore::NativeFramework)),
2101 (Some(name), "static") => (name, Some(cstore::NativeStatic)),
2102 (Some(name), "static-nobundle") => (name, Some(cstore::NativeStaticNobundle)),
2107 "unknown library kind `{}`, expected \
2108 one of dylib, framework, or static",
2114 if kind == Some(cstore::NativeStaticNobundle) && !nightly_options::is_nightly_build() {
2118 "the library kind 'static-nobundle' is only \
2119 accepted on the nightly compiler"
2123 let mut name_parts = name.splitn(2, ':');
2124 let name = name_parts.next().unwrap();
2125 let new_name = name_parts.next();
2126 (name.to_string(), new_name.map(|n| n.to_string()), kind)
2130 let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
2131 let test = matches.opt_present("test");
2133 prints.extend(matches.opt_strs("print").into_iter().map(|s| match &*s {
2134 "crate-name" => PrintRequest::CrateName,
2135 "file-names" => PrintRequest::FileNames,
2136 "sysroot" => PrintRequest::Sysroot,
2137 "cfg" => PrintRequest::Cfg,
2138 "target-list" => PrintRequest::TargetList,
2139 "target-cpus" => PrintRequest::TargetCPUs,
2140 "target-features" => PrintRequest::TargetFeatures,
2141 "relocation-models" => PrintRequest::RelocationModels,
2142 "code-models" => PrintRequest::CodeModels,
2143 "tls-models" => PrintRequest::TlsModels,
2144 "native-static-libs" => PrintRequest::NativeStaticLibs,
2145 "target-spec-json" => {
2146 if nightly_options::is_unstable_enabled(matches) {
2147 PrintRequest::TargetSpec
2152 "the `-Z unstable-options` flag must also be passed to \
2153 enable the target-spec-json print option"
2158 req => early_error(error_format, &format!("unknown print request `{}`", req)),
2161 let borrowck_mode = match debugging_opts.borrowck.as_ref().map(|s| &s[..]) {
2162 None | Some("ast") => BorrowckMode::Ast,
2163 Some("mir") => BorrowckMode::Mir,
2164 Some("compare") => BorrowckMode::Compare,
2165 Some("migrate") => BorrowckMode::Migrate,
2166 Some(m) => early_error(error_format, &format!("unknown borrowck mode `{}`", m)),
2169 if !cg.remark.is_empty() && debuginfo == DebugInfo::None {
2172 "-C remark will not show source locations without \
2177 let mut externs: BTreeMap<_, BTreeSet<_>> = BTreeMap::new();
2178 for arg in &matches.opt_strs("extern") {
2179 let mut parts = arg.splitn(2, '=');
2180 let name = match parts.next() {
2182 None => early_error(error_format, "--extern value must not be empty"),
2184 let location = match parts.next() {
2186 None => early_error(
2188 "--extern value must be of the format `foo=bar`",
2193 .entry(name.to_string())
2195 .insert(location.to_string());
2198 let crate_name = matches.opt_str("crate-name");
2200 let remap_path_prefix = matches
2201 .opt_strs("remap-path-prefix")
2204 let mut parts = remap.rsplitn(2, '='); // reverse iterator
2205 let to = parts.next();
2206 let from = parts.next();
2208 (Some(from), Some(to)) => (PathBuf::from(from), PathBuf::from(to)),
2211 "--remap-path-prefix must contain '=' between FROM and TO",
2220 optimize: opt_level,
2225 output_types: OutputTypes(output_types),
2227 maybe_sysroot: sysroot_opt,
2236 externs: Externs(externs),
2240 unstable_features: UnstableFeatures::from_environment(),
2242 actually_rustdoc: false,
2243 cli_forced_codegen_units: codegen_units,
2244 cli_forced_thinlto_off: disable_thinlto,
2252 pub fn parse_crate_types_from_list(list_list: Vec<String>) -> Result<Vec<CrateType>, String> {
2253 let mut crate_types: Vec<CrateType> = Vec::new();
2254 for unparsed_crate_type in &list_list {
2255 for part in unparsed_crate_type.split(',') {
2256 let new_part = match part {
2257 "lib" => default_lib_output(),
2258 "rlib" => CrateType::Rlib,
2259 "staticlib" => CrateType::Staticlib,
2260 "dylib" => CrateType::Dylib,
2261 "cdylib" => CrateType::Cdylib,
2262 "bin" => CrateType::Executable,
2263 "proc-macro" => CrateType::ProcMacro,
2265 return Err(format!("unknown crate type: `{}`", part));
2268 if !crate_types.contains(&new_part) {
2269 crate_types.push(new_part)
2277 pub mod nightly_options {
2279 use syntax::feature_gate::UnstableFeatures;
2280 use super::{ErrorOutputType, OptionStability, RustcOptGroup};
2281 use session::early_error;
2283 pub fn is_unstable_enabled(matches: &getopts::Matches) -> bool {
2288 .any(|x| *x == "unstable-options")
2291 pub fn is_nightly_build() -> bool {
2292 UnstableFeatures::from_environment().is_nightly_build()
2295 pub fn check_nightly_options(matches: &getopts::Matches, flags: &[RustcOptGroup]) {
2296 let has_z_unstable_option = matches
2299 .any(|x| *x == "unstable-options");
2300 let really_allows_unstable_options =
2301 UnstableFeatures::from_environment().is_nightly_build();
2303 for opt in flags.iter() {
2304 if opt.stability == OptionStability::Stable {
2307 if !matches.opt_present(opt.name) {
2310 if opt.name != "Z" && !has_z_unstable_option {
2312 ErrorOutputType::default(),
2314 "the `-Z unstable-options` flag must also be passed to enable \
2320 if really_allows_unstable_options {
2323 match opt.stability {
2324 OptionStability::Unstable => {
2326 "the option `{}` is only accepted on the \
2330 early_error(ErrorOutputType::default(), &msg);
2332 OptionStability::Stable => {}
2338 impl fmt::Display for CrateType {
2339 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
2341 CrateType::Executable => "bin".fmt(f),
2342 CrateType::Dylib => "dylib".fmt(f),
2343 CrateType::Rlib => "rlib".fmt(f),
2344 CrateType::Staticlib => "staticlib".fmt(f),
2345 CrateType::Cdylib => "cdylib".fmt(f),
2346 CrateType::ProcMacro => "proc-macro".fmt(f),
2351 /// Commandline arguments passed to the compiler have to be incorporated with
2352 /// the dependency tracking system for incremental compilation. This module
2353 /// provides some utilities to make this more convenient.
2355 /// The values of all commandline arguments that are relevant for dependency
2356 /// tracking are hashed into a single value that determines whether the
2357 /// incremental compilation cache can be re-used or not. This hashing is done
2358 /// via the DepTrackingHash trait defined below, since the standard Hash
2359 /// implementation might not be suitable (e.g. arguments are stored in a Vec,
2360 /// the hash of which is order dependent, but we might not want the order of
2361 /// arguments to make a difference for the hash).
2363 /// However, since the value provided by Hash::hash often *is* suitable,
2364 /// especially for primitive types, there is the
2365 /// impl_dep_tracking_hash_via_hash!() macro that allows to simply reuse the
2366 /// Hash implementation for DepTrackingHash. It's important though that
2367 /// we have an opt-in scheme here, so one is hopefully forced to think about
2368 /// how the hash should be calculated when adding a new commandline argument.
2372 use std::collections::BTreeMap;
2373 use std::hash::Hash;
2374 use std::path::PathBuf;
2375 use std::collections::hash_map::DefaultHasher;
2376 use super::{CrateType, DebugInfo, ErrorOutputType, Lto, OptLevel, OutputTypes,
2377 Passes, Sanitizer, CrossLangLto};
2378 use syntax::feature_gate::UnstableFeatures;
2379 use rustc_target::spec::{PanicStrategy, RelroLevel, TargetTriple};
2380 use syntax::edition::Edition;
2382 pub trait DepTrackingHash {
2383 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType);
2386 macro_rules! impl_dep_tracking_hash_via_hash {
2388 impl DepTrackingHash for $t {
2389 fn hash(&self, hasher: &mut DefaultHasher, _: ErrorOutputType) {
2390 Hash::hash(self, hasher);
2396 macro_rules! impl_dep_tracking_hash_for_sortable_vec_of {
2398 impl DepTrackingHash for Vec<$t> {
2399 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2400 let mut elems: Vec<&$t> = self.iter().collect();
2402 Hash::hash(&elems.len(), hasher);
2403 for (index, elem) in elems.iter().enumerate() {
2404 Hash::hash(&index, hasher);
2405 DepTrackingHash::hash(*elem, hasher, error_format);
2412 impl_dep_tracking_hash_via_hash!(bool);
2413 impl_dep_tracking_hash_via_hash!(usize);
2414 impl_dep_tracking_hash_via_hash!(u64);
2415 impl_dep_tracking_hash_via_hash!(String);
2416 impl_dep_tracking_hash_via_hash!(PathBuf);
2417 impl_dep_tracking_hash_via_hash!(lint::Level);
2418 impl_dep_tracking_hash_via_hash!(Option<bool>);
2419 impl_dep_tracking_hash_via_hash!(Option<usize>);
2420 impl_dep_tracking_hash_via_hash!(Option<String>);
2421 impl_dep_tracking_hash_via_hash!(Option<(String, u64)>);
2422 impl_dep_tracking_hash_via_hash!(Option<PanicStrategy>);
2423 impl_dep_tracking_hash_via_hash!(Option<RelroLevel>);
2424 impl_dep_tracking_hash_via_hash!(Option<lint::Level>);
2425 impl_dep_tracking_hash_via_hash!(Option<PathBuf>);
2426 impl_dep_tracking_hash_via_hash!(Option<cstore::NativeLibraryKind>);
2427 impl_dep_tracking_hash_via_hash!(CrateType);
2428 impl_dep_tracking_hash_via_hash!(PanicStrategy);
2429 impl_dep_tracking_hash_via_hash!(RelroLevel);
2430 impl_dep_tracking_hash_via_hash!(Passes);
2431 impl_dep_tracking_hash_via_hash!(OptLevel);
2432 impl_dep_tracking_hash_via_hash!(Lto);
2433 impl_dep_tracking_hash_via_hash!(DebugInfo);
2434 impl_dep_tracking_hash_via_hash!(UnstableFeatures);
2435 impl_dep_tracking_hash_via_hash!(OutputTypes);
2436 impl_dep_tracking_hash_via_hash!(cstore::NativeLibraryKind);
2437 impl_dep_tracking_hash_via_hash!(Sanitizer);
2438 impl_dep_tracking_hash_via_hash!(Option<Sanitizer>);
2439 impl_dep_tracking_hash_via_hash!(TargetTriple);
2440 impl_dep_tracking_hash_via_hash!(Edition);
2441 impl_dep_tracking_hash_via_hash!(CrossLangLto);
2443 impl_dep_tracking_hash_for_sortable_vec_of!(String);
2444 impl_dep_tracking_hash_for_sortable_vec_of!(PathBuf);
2445 impl_dep_tracking_hash_for_sortable_vec_of!(CrateType);
2446 impl_dep_tracking_hash_for_sortable_vec_of!((String, lint::Level));
2447 impl_dep_tracking_hash_for_sortable_vec_of!((
2450 Option<cstore::NativeLibraryKind>
2452 impl_dep_tracking_hash_for_sortable_vec_of!((String, u64));
2454 impl<T1, T2> DepTrackingHash for (T1, T2)
2456 T1: DepTrackingHash,
2457 T2: DepTrackingHash,
2459 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2460 Hash::hash(&0, hasher);
2461 DepTrackingHash::hash(&self.0, hasher, error_format);
2462 Hash::hash(&1, hasher);
2463 DepTrackingHash::hash(&self.1, hasher, error_format);
2467 impl<T1, T2, T3> DepTrackingHash for (T1, T2, T3)
2469 T1: DepTrackingHash,
2470 T2: DepTrackingHash,
2471 T3: DepTrackingHash,
2473 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2474 Hash::hash(&0, hasher);
2475 DepTrackingHash::hash(&self.0, hasher, error_format);
2476 Hash::hash(&1, hasher);
2477 DepTrackingHash::hash(&self.1, hasher, error_format);
2478 Hash::hash(&2, hasher);
2479 DepTrackingHash::hash(&self.2, hasher, error_format);
2483 // This is a stable hash because BTreeMap is a sorted container
2485 sub_hashes: BTreeMap<&'static str, &dyn DepTrackingHash>,
2486 hasher: &mut DefaultHasher,
2487 error_format: ErrorOutputType,
2489 for (key, sub_hash) in sub_hashes {
2490 // Using Hash::hash() instead of DepTrackingHash::hash() is fine for
2491 // the keys, as they are just plain strings
2492 Hash::hash(&key.len(), hasher);
2493 Hash::hash(key, hasher);
2494 sub_hash.hash(hasher, error_format);
2505 use session::config::{build_configuration, build_session_options_and_crate_config};
2506 use session::config::{Lto, CrossLangLto};
2507 use session::build_session;
2508 use std::collections::{BTreeMap, BTreeSet};
2509 use std::iter::FromIterator;
2510 use std::path::PathBuf;
2511 use super::{Externs, OutputType, OutputTypes};
2512 use rustc_target::spec::{PanicStrategy, RelroLevel};
2513 use syntax::symbol::Symbol;
2514 use syntax::edition::{Edition, DEFAULT_EDITION};
2518 fn optgroups() -> getopts::Options {
2519 let mut opts = getopts::Options::new();
2520 for group in super::rustc_optgroups() {
2521 (group.apply)(&mut opts);
2526 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
2527 BTreeMap::from_iter(entries.into_iter())
2530 fn mk_set<V: Ord>(entries: Vec<V>) -> BTreeSet<V> {
2531 BTreeSet::from_iter(entries.into_iter())
2534 // When the user supplies --test we should implicitly supply --cfg test
2536 fn test_switch_implies_cfg_test() {
2537 syntax::with_globals(|| {
2538 let matches = &match optgroups().parse(&["--test".to_string()]) {
2540 Err(f) => panic!("test_switch_implies_cfg_test: {}", f),
2542 let registry = errors::registry::Registry::new(&[]);
2543 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2544 let sess = build_session(sessopts, None, registry);
2545 let cfg = build_configuration(&sess, cfg);
2546 assert!(cfg.contains(&(Symbol::intern("test"), None)));
2550 // When the user supplies --test and --cfg test, don't implicitly add
2551 // another --cfg test
2553 fn test_switch_implies_cfg_test_unless_cfg_test() {
2554 syntax::with_globals(|| {
2555 let matches = &match optgroups().parse(&["--test".to_string(),
2556 "--cfg=test".to_string()]) {
2558 Err(f) => panic!("test_switch_implies_cfg_test_unless_cfg_test: {}", f),
2560 let registry = errors::registry::Registry::new(&[]);
2561 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2562 let sess = build_session(sessopts, None, registry);
2563 let cfg = build_configuration(&sess, cfg);
2564 let mut test_items = cfg.iter().filter(|&&(name, _)| name == "test");
2565 assert!(test_items.next().is_some());
2566 assert!(test_items.next().is_none());
2571 fn test_can_print_warnings() {
2572 syntax::with_globals(|| {
2573 let matches = optgroups().parse(&["-Awarnings".to_string()]).unwrap();
2574 let registry = errors::registry::Registry::new(&[]);
2575 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2576 let sess = build_session(sessopts, None, registry);
2577 assert!(!sess.diagnostic().flags.can_emit_warnings);
2580 syntax::with_globals(|| {
2581 let matches = optgroups()
2582 .parse(&["-Awarnings".to_string(), "-Dwarnings".to_string()])
2584 let registry = errors::registry::Registry::new(&[]);
2585 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2586 let sess = build_session(sessopts, None, registry);
2587 assert!(sess.diagnostic().flags.can_emit_warnings);
2590 syntax::with_globals(|| {
2591 let matches = optgroups().parse(&["-Adead_code".to_string()]).unwrap();
2592 let registry = errors::registry::Registry::new(&[]);
2593 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2594 let sess = build_session(sessopts, None, registry);
2595 assert!(sess.diagnostic().flags.can_emit_warnings);
2600 fn test_output_types_tracking_hash_different_paths() {
2601 let mut v1 = Options::default();
2602 let mut v2 = Options::default();
2603 let mut v3 = Options::default();
2606 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("./some/thing")))]);
2608 OutputTypes::new(&[(OutputType::Exe, Some(PathBuf::from("/some/thing")))]);
2609 v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
2611 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2612 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2613 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2616 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2617 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2618 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2622 fn test_output_types_tracking_hash_different_construction_order() {
2623 let mut v1 = Options::default();
2624 let mut v2 = Options::default();
2626 v1.output_types = OutputTypes::new(&[
2627 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2628 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2631 v2.output_types = OutputTypes::new(&[
2632 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2633 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2636 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2639 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2643 fn test_externs_tracking_hash_different_construction_order() {
2644 let mut v1 = Options::default();
2645 let mut v2 = Options::default();
2646 let mut v3 = Options::default();
2648 v1.externs = Externs::new(mk_map(vec![
2651 mk_set(vec![String::from("b"), String::from("c")]),
2655 mk_set(vec![String::from("e"), String::from("f")]),
2659 v2.externs = Externs::new(mk_map(vec![
2662 mk_set(vec![String::from("e"), String::from("f")]),
2666 mk_set(vec![String::from("b"), String::from("c")]),
2670 v3.externs = Externs::new(mk_map(vec![
2673 mk_set(vec![String::from("b"), String::from("c")]),
2677 mk_set(vec![String::from("f"), String::from("e")]),
2681 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2682 assert_eq!(v1.dep_tracking_hash(), v3.dep_tracking_hash());
2683 assert_eq!(v2.dep_tracking_hash(), v3.dep_tracking_hash());
2686 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2687 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2688 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2692 fn test_lints_tracking_hash_different_values() {
2693 let mut v1 = Options::default();
2694 let mut v2 = Options::default();
2695 let mut v3 = Options::default();
2697 v1.lint_opts = vec![
2698 (String::from("a"), lint::Allow),
2699 (String::from("b"), lint::Warn),
2700 (String::from("c"), lint::Deny),
2701 (String::from("d"), lint::Forbid),
2704 v2.lint_opts = vec![
2705 (String::from("a"), lint::Allow),
2706 (String::from("b"), lint::Warn),
2707 (String::from("X"), lint::Deny),
2708 (String::from("d"), lint::Forbid),
2711 v3.lint_opts = vec![
2712 (String::from("a"), lint::Allow),
2713 (String::from("b"), lint::Warn),
2714 (String::from("c"), lint::Forbid),
2715 (String::from("d"), lint::Deny),
2718 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2719 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2720 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2723 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2724 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2725 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2729 fn test_lints_tracking_hash_different_construction_order() {
2730 let mut v1 = Options::default();
2731 let mut v2 = Options::default();
2733 v1.lint_opts = vec![
2734 (String::from("a"), lint::Allow),
2735 (String::from("b"), lint::Warn),
2736 (String::from("c"), lint::Deny),
2737 (String::from("d"), lint::Forbid),
2740 v2.lint_opts = vec![
2741 (String::from("a"), lint::Allow),
2742 (String::from("c"), lint::Deny),
2743 (String::from("b"), lint::Warn),
2744 (String::from("d"), lint::Forbid),
2747 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2750 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2751 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2755 fn test_search_paths_tracking_hash_different_order() {
2756 let mut v1 = Options::default();
2757 let mut v2 = Options::default();
2758 let mut v3 = Options::default();
2759 let mut v4 = Options::default();
2763 .add_path("native=abc", super::ErrorOutputType::Json(false));
2765 .add_path("crate=def", super::ErrorOutputType::Json(false));
2767 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2769 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2771 .add_path("all=mno", super::ErrorOutputType::Json(false));
2774 .add_path("native=abc", super::ErrorOutputType::Json(false));
2776 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2778 .add_path("crate=def", super::ErrorOutputType::Json(false));
2780 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2782 .add_path("all=mno", super::ErrorOutputType::Json(false));
2785 .add_path("crate=def", super::ErrorOutputType::Json(false));
2787 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2789 .add_path("native=abc", super::ErrorOutputType::Json(false));
2791 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2793 .add_path("all=mno", super::ErrorOutputType::Json(false));
2796 .add_path("all=mno", super::ErrorOutputType::Json(false));
2798 .add_path("native=abc", super::ErrorOutputType::Json(false));
2800 .add_path("crate=def", super::ErrorOutputType::Json(false));
2802 .add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2804 .add_path("framework=jkl", super::ErrorOutputType::Json(false));
2806 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2807 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2808 assert!(v1.dep_tracking_hash() == v4.dep_tracking_hash());
2811 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2812 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2813 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2814 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2818 fn test_native_libs_tracking_hash_different_values() {
2819 let mut v1 = Options::default();
2820 let mut v2 = Options::default();
2821 let mut v3 = Options::default();
2822 let mut v4 = Options::default();
2826 (String::from("a"), None, Some(cstore::NativeStatic)),
2827 (String::from("b"), None, Some(cstore::NativeFramework)),
2828 (String::from("c"), None, Some(cstore::NativeUnknown)),
2833 (String::from("a"), None, Some(cstore::NativeStatic)),
2834 (String::from("X"), None, Some(cstore::NativeFramework)),
2835 (String::from("c"), None, Some(cstore::NativeUnknown)),
2840 (String::from("a"), None, Some(cstore::NativeStatic)),
2841 (String::from("b"), None, Some(cstore::NativeStatic)),
2842 (String::from("c"), None, Some(cstore::NativeUnknown)),
2847 (String::from("a"), None, Some(cstore::NativeStatic)),
2850 Some(String::from("X")),
2851 Some(cstore::NativeFramework),
2853 (String::from("c"), None, Some(cstore::NativeUnknown)),
2856 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2857 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2858 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
2861 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2862 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2863 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2864 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2868 fn test_native_libs_tracking_hash_different_order() {
2869 let mut v1 = Options::default();
2870 let mut v2 = Options::default();
2871 let mut v3 = Options::default();
2875 (String::from("a"), None, Some(cstore::NativeStatic)),
2876 (String::from("b"), None, Some(cstore::NativeFramework)),
2877 (String::from("c"), None, Some(cstore::NativeUnknown)),
2881 (String::from("b"), None, Some(cstore::NativeFramework)),
2882 (String::from("a"), None, Some(cstore::NativeStatic)),
2883 (String::from("c"), None, Some(cstore::NativeUnknown)),
2887 (String::from("c"), None, Some(cstore::NativeUnknown)),
2888 (String::from("a"), None, Some(cstore::NativeStatic)),
2889 (String::from("b"), None, Some(cstore::NativeFramework)),
2892 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2893 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2894 assert!(v2.dep_tracking_hash() == v3.dep_tracking_hash());
2897 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2898 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2899 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2903 fn test_codegen_options_tracking_hash() {
2904 let reference = Options::default();
2905 let mut opts = Options::default();
2907 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
2908 opts.cg.ar = Some(String::from("abc"));
2909 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2911 opts.cg.linker = Some(PathBuf::from("linker"));
2912 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2914 opts.cg.link_args = Some(vec![String::from("abc"), String::from("def")]);
2915 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2917 opts.cg.link_dead_code = true;
2918 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2920 opts.cg.rpath = true;
2921 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2923 opts.cg.extra_filename = String::from("extra-filename");
2924 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2926 opts.cg.codegen_units = Some(42);
2927 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2929 opts.cg.remark = super::Passes::Some(vec![String::from("pass1"), String::from("pass2")]);
2930 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2932 opts.cg.save_temps = true;
2933 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2935 opts.cg.incremental = Some(String::from("abc"));
2936 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2938 // Make sure changing a [TRACKED] option changes the hash
2939 opts = reference.clone();
2940 opts.cg.lto = Lto::Fat;
2941 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2943 opts = reference.clone();
2944 opts.cg.target_cpu = Some(String::from("abc"));
2945 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2947 opts = reference.clone();
2948 opts.cg.target_feature = String::from("all the features, all of them");
2949 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2951 opts = reference.clone();
2952 opts.cg.passes = vec![String::from("1"), String::from("2")];
2953 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2955 opts = reference.clone();
2956 opts.cg.llvm_args = vec![String::from("1"), String::from("2")];
2957 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2959 opts = reference.clone();
2960 opts.cg.overflow_checks = Some(true);
2961 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2963 opts = reference.clone();
2964 opts.cg.no_prepopulate_passes = true;
2965 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2967 opts = reference.clone();
2968 opts.cg.no_vectorize_loops = true;
2969 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2971 opts = reference.clone();
2972 opts.cg.no_vectorize_slp = true;
2973 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2975 opts = reference.clone();
2976 opts.cg.soft_float = true;
2977 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2979 opts = reference.clone();
2980 opts.cg.prefer_dynamic = true;
2981 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2983 opts = reference.clone();
2984 opts.cg.no_integrated_as = true;
2985 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2987 opts = reference.clone();
2988 opts.cg.no_redzone = Some(true);
2989 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2991 opts = reference.clone();
2992 opts.cg.relocation_model = Some(String::from("relocation model"));
2993 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2995 opts = reference.clone();
2996 opts.cg.code_model = Some(String::from("code model"));
2997 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2999 opts = reference.clone();
3000 opts.debugging_opts.tls_model = Some(String::from("tls model"));
3001 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3003 opts = reference.clone();
3004 opts.debugging_opts.pgo_gen = Some(String::from("abc"));
3005 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3007 opts = reference.clone();
3008 opts.debugging_opts.pgo_use = String::from("abc");
3009 assert_ne!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3011 opts = reference.clone();
3012 opts.cg.metadata = vec![String::from("A"), String::from("B")];
3013 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3015 opts = reference.clone();
3016 opts.cg.debuginfo = Some(0xdeadbeef);
3017 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3019 opts = reference.clone();
3020 opts.cg.debuginfo = Some(0xba5eba11);
3021 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3023 opts = reference.clone();
3024 opts.cg.force_frame_pointers = Some(false);
3025 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3027 opts = reference.clone();
3028 opts.cg.debug_assertions = Some(true);
3029 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3031 opts = reference.clone();
3032 opts.cg.inline_threshold = Some(0xf007ba11);
3033 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3035 opts = reference.clone();
3036 opts.cg.panic = Some(PanicStrategy::Abort);
3037 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3041 fn test_debugging_options_tracking_hash() {
3042 let reference = Options::default();
3043 let mut opts = Options::default();
3045 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
3046 opts.debugging_opts.verbose = true;
3047 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3048 opts.debugging_opts.time_passes = true;
3049 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3050 opts.debugging_opts.count_llvm_insns = true;
3051 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3052 opts.debugging_opts.time_llvm_passes = true;
3053 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3054 opts.debugging_opts.input_stats = true;
3055 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3056 opts.debugging_opts.codegen_stats = true;
3057 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3058 opts.debugging_opts.borrowck_stats = true;
3059 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3060 opts.debugging_opts.meta_stats = true;
3061 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3062 opts.debugging_opts.print_link_args = true;
3063 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3064 opts.debugging_opts.print_llvm_passes = true;
3065 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3066 opts.debugging_opts.ast_json = true;
3067 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3068 opts.debugging_opts.ast_json_noexpand = true;
3069 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3070 opts.debugging_opts.ls = true;
3071 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3072 opts.debugging_opts.save_analysis = true;
3073 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3074 opts.debugging_opts.flowgraph_print_loans = true;
3075 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3076 opts.debugging_opts.flowgraph_print_moves = true;
3077 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3078 opts.debugging_opts.flowgraph_print_assigns = true;
3079 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3080 opts.debugging_opts.flowgraph_print_all = true;
3081 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3082 opts.debugging_opts.print_region_graph = true;
3083 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3084 opts.debugging_opts.parse_only = true;
3085 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3086 opts.debugging_opts.incremental = Some(String::from("abc"));
3087 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3088 opts.debugging_opts.dump_dep_graph = true;
3089 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3090 opts.debugging_opts.query_dep_graph = true;
3091 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3092 opts.debugging_opts.no_analysis = true;
3093 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3094 opts.debugging_opts.unstable_options = true;
3095 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3096 opts.debugging_opts.trace_macros = true;
3097 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3098 opts.debugging_opts.keep_hygiene_data = true;
3099 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3100 opts.debugging_opts.keep_ast = true;
3101 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3102 opts.debugging_opts.print_mono_items = Some(String::from("abc"));
3103 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3104 opts.debugging_opts.dump_mir = Some(String::from("abc"));
3105 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3106 opts.debugging_opts.dump_mir_dir = String::from("abc");
3107 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3108 opts.debugging_opts.dump_mir_graphviz = true;
3109 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
3111 // Make sure changing a [TRACKED] option changes the hash
3112 opts = reference.clone();
3113 opts.debugging_opts.asm_comments = true;
3114 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3116 opts = reference.clone();
3117 opts.debugging_opts.verify_llvm_ir = true;
3118 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3120 opts = reference.clone();
3121 opts.debugging_opts.no_landing_pads = true;
3122 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3124 opts = reference.clone();
3125 opts.debugging_opts.fewer_names = true;
3126 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3128 opts = reference.clone();
3129 opts.debugging_opts.no_codegen = true;
3130 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3132 opts = reference.clone();
3133 opts.debugging_opts.treat_err_as_bug = true;
3134 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3136 opts = reference.clone();
3137 opts.debugging_opts.report_delayed_bugs = true;
3138 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3140 opts = reference.clone();
3141 opts.debugging_opts.continue_parse_after_error = true;
3142 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3144 opts = reference.clone();
3145 opts.debugging_opts.extra_plugins = vec![String::from("plugin1"), String::from("plugin2")];
3146 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3148 opts = reference.clone();
3149 opts.debugging_opts.force_overflow_checks = Some(true);
3150 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3152 opts = reference.clone();
3153 opts.debugging_opts.show_span = Some(String::from("abc"));
3154 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3156 opts = reference.clone();
3157 opts.debugging_opts.mir_opt_level = 3;
3158 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3160 opts = reference.clone();
3161 opts.debugging_opts.relro_level = Some(RelroLevel::Full);
3162 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3164 opts = reference.clone();
3165 opts.debugging_opts.cross_lang_lto = CrossLangLto::LinkerPluginAuto;
3166 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
3170 fn test_edition_parsing() {
3171 // test default edition
3172 let options = Options::default();
3173 assert!(options.edition == DEFAULT_EDITION);
3175 let matches = optgroups()
3176 .parse(&["--edition=2018".to_string()])
3178 let (sessopts, _) = build_session_options_and_crate_config(&matches);
3179 assert!(sessopts.edition == Edition::Edition2018)