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 pub use self::EntryFnType::*;
15 pub use self::CrateType::*;
16 pub use self::Passes::*;
17 pub use self::DebugInfoLevel::*;
19 use session::{early_error, early_warn, Session};
20 use session::search_paths::SearchPaths;
22 use ich::StableHashingContext;
23 use rustc_back::{LinkerFlavor, PanicStrategy, RelroLevel};
24 use rustc_back::target::Target;
25 use rustc_data_structures::stable_hasher::ToStableHashKey;
29 use syntax::ast::{self, IntTy, UintTy};
30 use syntax::codemap::{FilePathMapping, FileName};
31 use syntax::parse::token;
33 use syntax::symbol::Symbol;
34 use syntax::feature_gate::UnstableFeatures;
36 use errors::{ColorConfig, FatalError, Handler};
39 use std::collections::{BTreeMap, BTreeSet};
40 use std::collections::btree_map::Iter as BTreeMapIter;
41 use std::collections::btree_map::Keys as BTreeMapKeysIter;
42 use std::collections::btree_map::Values as BTreeMapValuesIter;
45 use std::hash::Hasher;
46 use std::collections::hash_map::DefaultHasher;
47 use std::collections::HashSet;
48 use std::iter::FromIterator;
49 use std::path::PathBuf;
57 #[derive(Clone, Hash, Debug)]
65 #[derive(Clone, Copy, PartialEq, Hash)]
75 #[derive(Clone, Copy, PartialEq, Hash)]
77 /// Don't do any LTO whatsoever
80 /// Do a full crate graph LTO. The flavor is determined by the compiler
81 /// (currently the default is "fat").
84 /// Do a full crate graph LTO with ThinLTO
87 /// Do a local graph LTO with ThinLTO (only relevant for multiple codegen
91 /// Do a full crate graph LTO with "fat" LTO
95 #[derive(Clone, Copy, PartialEq, Hash)]
96 pub enum DebugInfoLevel {
102 #[derive(Clone, Copy, PartialEq, Eq, Hash, Debug, PartialOrd, Ord,
103 RustcEncodable, RustcDecodable)]
104 pub enum OutputType {
115 impl_stable_hash_for!(enum self::OutputType {
126 impl<'tcx> ToStableHashKey<StableHashingContext<'tcx>> for OutputType {
127 type KeyType = OutputType;
129 fn to_stable_hash_key(&self, _: &StableHashingContext<'tcx>) -> Self::KeyType {
135 fn is_compatible_with_codegen_units_and_single_output_file(&self) -> bool {
138 OutputType::DepInfo => true,
139 OutputType::Bitcode |
140 OutputType::Assembly |
141 OutputType::LlvmAssembly |
144 OutputType::Metadata => false,
148 fn shorthand(&self) -> &'static str {
150 OutputType::Bitcode => "llvm-bc",
151 OutputType::Assembly => "asm",
152 OutputType::LlvmAssembly => "llvm-ir",
153 OutputType::Mir => "mir",
154 OutputType::Object => "obj",
155 OutputType::Metadata => "metadata",
156 OutputType::Exe => "link",
157 OutputType::DepInfo => "dep-info",
161 fn from_shorthand(shorthand: &str) -> Option<Self> {
162 Some(match shorthand {
163 "asm" => OutputType::Assembly,
164 "llvm-ir" => OutputType::LlvmAssembly,
165 "mir" => OutputType::Mir,
166 "llvm-bc" => OutputType::Bitcode,
167 "obj" => OutputType::Object,
168 "metadata" => OutputType::Metadata,
169 "link" => OutputType::Exe,
170 "dep-info" => OutputType::DepInfo,
175 fn shorthands_display() -> String {
177 "`{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`, `{}`",
178 OutputType::Bitcode.shorthand(),
179 OutputType::Assembly.shorthand(),
180 OutputType::LlvmAssembly.shorthand(),
181 OutputType::Mir.shorthand(),
182 OutputType::Object.shorthand(),
183 OutputType::Metadata.shorthand(),
184 OutputType::Exe.shorthand(),
185 OutputType::DepInfo.shorthand(),
189 pub fn extension(&self) -> &'static str {
191 OutputType::Bitcode => "bc",
192 OutputType::Assembly => "s",
193 OutputType::LlvmAssembly => "ll",
194 OutputType::Mir => "mir",
195 OutputType::Object => "o",
196 OutputType::Metadata => "rmeta",
197 OutputType::DepInfo => "d",
198 OutputType::Exe => "",
203 #[derive(Clone, Copy, Debug, PartialEq, Eq)]
204 pub enum ErrorOutputType {
205 HumanReadable(ColorConfig),
210 impl Default for ErrorOutputType {
211 fn default() -> ErrorOutputType {
212 ErrorOutputType::HumanReadable(ColorConfig::Auto)
216 // Use tree-based collections to cheaply get a deterministic Hash implementation.
217 // DO NOT switch BTreeMap out for an unsorted container type! That would break
218 // dependency tracking for commandline arguments.
219 #[derive(Clone, Hash)]
220 pub struct OutputTypes(BTreeMap<OutputType, Option<PathBuf>>);
222 impl_stable_hash_for!(tuple_struct self::OutputTypes {
227 pub fn new(entries: &[(OutputType, Option<PathBuf>)]) -> OutputTypes {
228 OutputTypes(BTreeMap::from_iter(entries.iter()
229 .map(|&(k, ref v)| (k, v.clone()))))
232 pub fn get(&self, key: &OutputType) -> Option<&Option<PathBuf>> {
236 pub fn contains_key(&self, key: &OutputType) -> bool {
237 self.0.contains_key(key)
240 pub fn keys<'a>(&'a self) -> BTreeMapKeysIter<'a, OutputType, Option<PathBuf>> {
244 pub fn values<'a>(&'a self) -> BTreeMapValuesIter<'a, OutputType, Option<PathBuf>> {
248 // True if any of the output types require codegen or linking.
249 pub fn should_trans(&self) -> bool {
250 self.0.keys().any(|k| match *k {
251 OutputType::Bitcode |
252 OutputType::Assembly |
253 OutputType::LlvmAssembly |
256 OutputType::Exe => true,
257 OutputType::Metadata |
258 OutputType::DepInfo => false,
264 // Use tree-based collections to cheaply get a deterministic Hash implementation.
265 // DO NOT switch BTreeMap or BTreeSet out for an unsorted container type! That
266 // would break dependency tracking for commandline arguments.
267 #[derive(Clone, Hash)]
268 pub struct Externs(BTreeMap<String, BTreeSet<String>>);
271 pub fn new(data: BTreeMap<String, BTreeSet<String>>) -> Externs {
275 pub fn get(&self, key: &str) -> Option<&BTreeSet<String>> {
279 pub fn iter<'a>(&'a self) -> BTreeMapIter<'a, String, BTreeSet<String>> {
284 macro_rules! hash_option {
285 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [UNTRACKED]) => ({});
286 ($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [TRACKED]) => ({
287 if $sub_hashes.insert(stringify!($opt_name),
288 $opt_expr as &dep_tracking::DepTrackingHash).is_some() {
289 bug!("Duplicate key in CLI DepTrackingHash: {}", stringify!($opt_name))
295 [UNTRACKED_WITH_WARNING $warn_val:expr, $warn_text:expr, $error_format:expr]) => ({
296 if *$opt_expr == $warn_val {
297 early_warn($error_format, $warn_text)
302 macro_rules! top_level_options {
303 (pub struct Options { $(
304 $opt:ident : $t:ty [$dep_tracking_marker:ident $($warn_val:expr, $warn_text:expr)*],
312 pub fn dep_tracking_hash(&self) -> u64 {
313 let mut sub_hashes = BTreeMap::new();
318 [$dep_tracking_marker $($warn_val,
320 self.error_format)*]);
322 let mut hasher = DefaultHasher::new();
323 dep_tracking::stable_hash(sub_hashes,
332 // The top-level commandline options struct
334 // For each option, one has to specify how it behaves with regard to the
335 // dependency tracking system of incremental compilation. This is done via the
336 // square-bracketed directive after the field type. The options are:
339 // A change in the given field will cause the compiler to completely clear the
340 // incremental compilation cache before proceeding.
343 // Incremental compilation is not influenced by this option.
345 // [UNTRACKED_WITH_WARNING(val, warning)]
346 // The option is incompatible with incremental compilation in some way. If it
347 // has the value `val`, the string `warning` is emitted as a warning.
349 // If you add a new option to this struct or one of the sub-structs like
350 // CodegenOptions, think about how it influences incremental compilation. If in
351 // doubt, specify [TRACKED], which is always "correct" but might lead to
352 // unnecessary re-compilation.
355 // The crate config requested for the session, which may be combined
356 // with additional crate configurations during the compile process
357 crate_types: Vec<CrateType> [TRACKED],
358 optimize: OptLevel [TRACKED],
359 // Include the debug_assertions flag into dependency tracking, since it
360 // can influence whether overflow checks are done or not.
361 debug_assertions: bool [TRACKED],
362 debuginfo: DebugInfoLevel [TRACKED],
363 lint_opts: Vec<(String, lint::Level)> [TRACKED],
364 lint_cap: Option<lint::Level> [TRACKED],
365 describe_lints: bool [UNTRACKED],
366 output_types: OutputTypes [TRACKED],
367 // FIXME(mw): We track this for now but it actually doesn't make too
368 // much sense: The search path can stay the same while the
369 // things discovered there might have changed on disk.
370 search_paths: SearchPaths [TRACKED],
371 libs: Vec<(String, Option<String>, Option<cstore::NativeLibraryKind>)> [TRACKED],
372 maybe_sysroot: Option<PathBuf> [TRACKED],
374 target_triple: String [TRACKED],
376 test: bool [TRACKED],
377 error_format: ErrorOutputType [UNTRACKED],
379 // if Some, enable incremental compilation, using the given
380 // directory to store intermediate results
381 incremental: Option<PathBuf> [UNTRACKED],
383 debugging_opts: DebuggingOptions [TRACKED],
384 prints: Vec<PrintRequest> [UNTRACKED],
385 // Determines which borrow checker(s) to run. This is the parsed, sanitized
386 // version of `debugging_opts.borrowck`, which is just a plain string.
387 borrowck_mode: BorrowckMode [UNTRACKED],
388 cg: CodegenOptions [TRACKED],
389 // FIXME(mw): We track this for now but it actually doesn't make too
390 // much sense: The value of this option can stay the same
391 // while the files they refer to might have changed on disk.
392 externs: Externs [TRACKED],
393 crate_name: Option<String> [TRACKED],
394 // An optional name to use as the crate for std during std injection,
395 // written `extern crate std = "name"`. Default to "std". Used by
396 // out-of-tree drivers.
397 alt_std_name: Option<String> [TRACKED],
398 // Indicates how the compiler should treat unstable features
399 unstable_features: UnstableFeatures [TRACKED],
401 // Indicates whether this run of the compiler is actually rustdoc. This
402 // is currently just a hack and will be removed eventually, so please
403 // try to not rely on this too much.
404 actually_rustdoc: bool [TRACKED],
406 // Specifications of codegen units / ThinLTO which are forced as a
407 // result of parsing command line options. These are not necessarily
408 // what rustc was invoked with, but massaged a bit to agree with
409 // commands like `--emit llvm-ir` which they're often incompatible with
410 // if we otherwise use the defaults of rustc.
411 cli_forced_codegen_units: Option<usize> [UNTRACKED],
412 cli_forced_thinlto_off: bool [UNTRACKED],
416 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
417 pub enum PrintRequest {
432 #[derive(Copy, Clone, Debug, PartialEq, Eq, PartialOrd, Ord, Hash)]
433 pub enum BorrowckMode {
440 /// Should we emit the AST-based borrow checker errors?
441 pub fn use_ast(self) -> bool {
443 BorrowckMode::Ast => true,
444 BorrowckMode::Compare => true,
445 BorrowckMode::Mir => false,
448 /// Should we emit the MIR-based borrow checker errors?
449 pub fn use_mir(self) -> bool {
451 BorrowckMode::Ast => false,
452 BorrowckMode::Compare => true,
453 BorrowckMode::Mir => true,
459 /// Load source from file
462 /// String that is shown in place of a filename
464 /// Anonymous source string
470 pub fn filestem(&self) -> String {
472 Input::File(ref ifile) => ifile.file_stem().unwrap()
473 .to_str().unwrap().to_string(),
474 Input::Str { .. } => "rust_out".to_string(),
480 pub struct OutputFilenames {
481 pub out_directory: PathBuf,
482 pub out_filestem: String,
483 pub single_output_file: Option<PathBuf>,
485 pub outputs: OutputTypes,
488 impl_stable_hash_for!(struct self::OutputFilenames {
496 pub const RUST_CGU_EXT: &str = "rcgu";
498 impl OutputFilenames {
499 pub fn path(&self, flavor: OutputType) -> PathBuf {
500 self.outputs.get(&flavor).and_then(|p| p.to_owned())
501 .or_else(|| self.single_output_file.clone())
502 .unwrap_or_else(|| self.temp_path(flavor, None))
505 /// Get the path where a compilation artifact of the given type for the
506 /// given codegen unit should be placed on disk. If codegen_unit_name is
507 /// None, a path distinct from those of any codegen unit will be generated.
508 pub fn temp_path(&self,
510 codegen_unit_name: Option<&str>)
512 let extension = flavor.extension();
513 self.temp_path_ext(extension, codegen_unit_name)
516 /// Like temp_path, but also supports things where there is no corresponding
517 /// OutputType, like no-opt-bitcode or lto-bitcode.
518 pub fn temp_path_ext(&self,
520 codegen_unit_name: Option<&str>)
522 let base = self.out_directory.join(&self.filestem());
524 let mut extension = String::new();
526 if let Some(codegen_unit_name) = codegen_unit_name {
527 extension.push_str(codegen_unit_name);
531 if !extension.is_empty() {
532 extension.push_str(".");
533 extension.push_str(RUST_CGU_EXT);
534 extension.push_str(".");
537 extension.push_str(ext);
540 let path = base.with_extension(&extension[..]);
544 pub fn with_extension(&self, extension: &str) -> PathBuf {
545 self.out_directory.join(&self.filestem()).with_extension(extension)
548 pub fn filestem(&self) -> String {
549 format!("{}{}", self.out_filestem, self.extra)
553 pub fn host_triple() -> &'static str {
554 // Get the host triple out of the build environment. This ensures that our
555 // idea of the host triple is the same as for the set of libraries we've
556 // actually built. We can't just take LLVM's host triple because they
557 // normalize all ix86 architectures to i386.
559 // Instead of grabbing the host triple (for the current host), we grab (at
560 // compile time) the target triple that this rustc is built with and
561 // calling that (at runtime) the host triple.
562 (option_env!("CFG_COMPILER_HOST_TRIPLE")).
563 expect("CFG_COMPILER_HOST_TRIPLE")
566 /// Some reasonable defaults
567 pub fn basic_options() -> Options {
569 crate_types: Vec::new(),
570 optimize: OptLevel::No,
571 debuginfo: NoDebugInfo,
572 lint_opts: Vec::new(),
574 describe_lints: false,
575 output_types: OutputTypes(BTreeMap::new()),
576 search_paths: SearchPaths::new(),
578 target_triple: host_triple().to_string(),
581 debugging_opts: basic_debugging_options(),
583 borrowck_mode: BorrowckMode::Ast,
584 cg: basic_codegen_options(),
585 error_format: ErrorOutputType::default(),
586 externs: Externs(BTreeMap::new()),
590 unstable_features: UnstableFeatures::Disallow,
591 debug_assertions: true,
592 actually_rustdoc: false,
593 cli_forced_codegen_units: None,
594 cli_forced_thinlto_off: false,
599 /// True if there is a reason to build the dep graph.
600 pub fn build_dep_graph(&self) -> bool {
601 self.incremental.is_some() ||
602 self.debugging_opts.dump_dep_graph ||
603 self.debugging_opts.query_dep_graph
607 pub fn enable_dep_node_debug_strs(&self) -> bool {
608 cfg!(debug_assertions) &&
609 (self.debugging_opts.query_dep_graph || self.debugging_opts.incremental_info)
612 pub fn file_path_mapping(&self) -> FilePathMapping {
613 FilePathMapping::new(
614 self.debugging_opts.remap_path_prefix_from.iter().zip(
615 self.debugging_opts.remap_path_prefix_to.iter()
616 ).map(|(src, dst)| (src.clone(), dst.clone())).collect()
620 /// True if there will be an output file generated
621 pub fn will_create_output_file(&self) -> bool {
622 !self.debugging_opts.parse_only && // The file is just being parsed
623 !self.debugging_opts.ls // The file is just being queried
627 // The type of entry function, so
628 // users can have their own entry
629 // functions that don't start a
631 #[derive(Copy, Clone, PartialEq)]
632 pub enum EntryFnType {
638 #[derive(Copy, PartialEq, PartialOrd, Clone, Ord, Eq, Hash, Debug)]
648 #[derive(Clone, Hash)]
650 SomePasses(Vec<String>),
655 pub fn is_empty(&self) -> bool {
657 SomePasses(ref v) => v.is_empty(),
663 /// Declare a macro that will define all CodegenOptions/DebuggingOptions fields and parsers all
664 /// at once. The goal of this macro is to define an interface that can be
665 /// programmatically used by the option parser in order to initialize the struct
666 /// without hardcoding field names all over the place.
668 /// The goal is to invoke this macro once with the correct fields, and then this
669 /// macro generates all necessary code. The main gotcha of this macro is the
670 /// cgsetters module which is a bunch of generated code to parse an option into
671 /// its respective field in the struct. There are a few hand-written parsers for
672 /// parsing specific types of values in this module.
673 macro_rules! options {
674 ($struct_name:ident, $setter_name:ident, $defaultfn:ident,
675 $buildfn:ident, $prefix:expr, $outputname:expr,
676 $stat:ident, $mod_desc:ident, $mod_set:ident,
677 $($opt:ident : $t:ty = (
680 [$dep_tracking_marker:ident $(($dep_warn_val:expr, $dep_warn_text:expr))*],
685 pub struct $struct_name { $(pub $opt: $t),* }
687 pub fn $defaultfn() -> $struct_name {
688 $struct_name { $($opt: $init),* }
691 pub fn $buildfn(matches: &getopts::Matches, error_format: ErrorOutputType) -> $struct_name
693 let mut op = $defaultfn();
694 for option in matches.opt_strs($prefix) {
695 let mut iter = option.splitn(2, '=');
696 let key = iter.next().unwrap();
697 let value = iter.next();
698 let option_to_lookup = key.replace("-", "_");
699 let mut found = false;
700 for &(candidate, setter, opt_type_desc, _) in $stat {
701 if option_to_lookup != candidate { continue }
702 if !setter(&mut op, value) {
703 match (value, opt_type_desc) {
704 (Some(..), None) => {
705 early_error(error_format, &format!("{} option `{}` takes no \
706 value", $outputname, key))
708 (None, Some(type_desc)) => {
709 early_error(error_format, &format!("{0} option `{1}` requires \
710 {2} ({3} {1}=<value>)",
714 (Some(value), Some(type_desc)) => {
715 early_error(error_format, &format!("incorrect value `{}` for {} \
716 option `{}` - {} was expected",
720 (None, None) => bug!()
727 early_error(error_format, &format!("unknown {} option: `{}`",
734 impl<'a> dep_tracking::DepTrackingHash for $struct_name {
736 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
737 let mut sub_hashes = BTreeMap::new();
742 [$dep_tracking_marker $($dep_warn_val,
746 dep_tracking::stable_hash(sub_hashes, hasher, error_format);
750 pub type $setter_name = fn(&mut $struct_name, v: Option<&str>) -> bool;
751 pub const $stat: &'static [(&'static str, $setter_name,
752 Option<&'static str>, &'static str)] =
753 &[ $( (stringify!($opt), $mod_set::$opt, $mod_desc::$parse, $desc) ),* ];
755 #[allow(non_upper_case_globals, dead_code)]
757 pub const parse_bool: Option<&'static str> = None;
758 pub const parse_opt_bool: Option<&'static str> =
759 Some("one of: `y`, `yes`, `on`, `n`, `no`, or `off`");
760 pub const parse_string: Option<&'static str> = Some("a string");
761 pub const parse_string_push: Option<&'static str> = Some("a string");
762 pub const parse_pathbuf_push: Option<&'static str> = Some("a path");
763 pub const parse_opt_string: Option<&'static str> = Some("a string");
764 pub const parse_opt_pathbuf: Option<&'static str> = Some("a path");
765 pub const parse_list: Option<&'static str> = Some("a space-separated list of strings");
766 pub const parse_opt_list: Option<&'static str> = Some("a space-separated list of strings");
767 pub const parse_uint: Option<&'static str> = Some("a number");
768 pub const parse_passes: Option<&'static str> =
769 Some("a space-separated list of passes, or `all`");
770 pub const parse_opt_uint: Option<&'static str> =
772 pub const parse_panic_strategy: Option<&'static str> =
773 Some("either `panic` or `abort`");
774 pub const parse_relro_level: Option<&'static str> =
775 Some("one of: `full`, `partial`, or `off`");
776 pub const parse_sanitizer: Option<&'static str> =
777 Some("one of: `address`, `leak`, `memory` or `thread`");
778 pub const parse_linker_flavor: Option<&'static str> =
779 Some(::rustc_back::LinkerFlavor::one_of());
780 pub const parse_optimization_fuel: Option<&'static str> =
781 Some("crate=integer");
782 pub const parse_unpretty: Option<&'static str> =
783 Some("`string` or `string=string`");
784 pub const parse_lto: Option<&'static str> =
785 Some("one of `thin`, `fat`, or omitted");
790 use super::{$struct_name, Passes, SomePasses, AllPasses, Sanitizer, Lto};
791 use rustc_back::{LinkerFlavor, PanicStrategy, RelroLevel};
792 use std::path::PathBuf;
795 pub fn $opt(cg: &mut $struct_name, v: Option<&str>) -> bool {
796 $parse(&mut cg.$opt, v)
800 fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool {
803 None => { *slot = true; true }
807 fn parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool {
811 "n" | "no" | "off" => {
814 "y" | "yes" | "on" => {
817 _ => { return false; }
822 None => { *slot = Some(true); true }
826 fn parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool {
828 Some(s) => { *slot = Some(s.to_string()); true },
833 fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, v: Option<&str>) -> bool {
835 Some(s) => { *slot = Some(PathBuf::from(s)); true },
840 fn parse_string(slot: &mut String, v: Option<&str>) -> bool {
842 Some(s) => { *slot = s.to_string(); true },
847 fn parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool {
849 Some(s) => { slot.push(s.to_string()); true },
854 fn parse_pathbuf_push(slot: &mut Vec<PathBuf>, v: Option<&str>) -> bool {
856 Some(s) => { slot.push(PathBuf::from(s)); true },
861 fn parse_list(slot: &mut Vec<String>, v: Option<&str>)
865 for s in s.split_whitespace() {
866 slot.push(s.to_string());
874 fn parse_opt_list(slot: &mut Option<Vec<String>>, v: Option<&str>)
878 let v = s.split_whitespace().map(|s| s.to_string()).collect();
886 fn parse_uint(slot: &mut usize, v: Option<&str>) -> bool {
887 match v.and_then(|s| s.parse().ok()) {
888 Some(i) => { *slot = i; true },
893 fn parse_opt_uint(slot: &mut Option<usize>, v: Option<&str>) -> bool {
895 Some(s) => { *slot = s.parse().ok(); slot.is_some() }
896 None => { *slot = None; false }
900 fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
907 let mut passes = vec![];
908 if parse_list(&mut passes, v) {
909 *slot = SomePasses(passes);
918 fn parse_panic_strategy(slot: &mut Option<PanicStrategy>, v: Option<&str>) -> bool {
920 Some("unwind") => *slot = Some(PanicStrategy::Unwind),
921 Some("abort") => *slot = Some(PanicStrategy::Abort),
927 fn parse_relro_level(slot: &mut Option<RelroLevel>, v: Option<&str>) -> bool {
930 match s.parse::<RelroLevel>() {
931 Ok(level) => *slot = Some(level),
940 fn parse_sanitizer(slote: &mut Option<Sanitizer>, v: Option<&str>) -> bool {
942 Some("address") => *slote = Some(Sanitizer::Address),
943 Some("leak") => *slote = Some(Sanitizer::Leak),
944 Some("memory") => *slote = Some(Sanitizer::Memory),
945 Some("thread") => *slote = Some(Sanitizer::Thread),
951 fn parse_linker_flavor(slote: &mut Option<LinkerFlavor>, v: Option<&str>) -> bool {
952 match v.and_then(LinkerFlavor::from_str) {
953 Some(lf) => *slote = Some(lf),
959 fn parse_optimization_fuel(slot: &mut Option<(String, u64)>, v: Option<&str>) -> bool {
963 let parts = s.split('=').collect::<Vec<_>>();
964 if parts.len() != 2 { return false; }
965 let crate_name = parts[0].to_string();
966 let fuel = parts[1].parse::<u64>();
967 if fuel.is_err() { return false; }
968 *slot = Some((crate_name, fuel.unwrap()));
974 fn parse_unpretty(slot: &mut Option<String>, v: Option<&str>) -> bool {
977 Some(s) if s.split('=').count() <= 2 => {
978 *slot = Some(s.to_string());
985 fn parse_lto(slot: &mut Lto, v: Option<&str>) -> bool {
988 Some("thin") => Lto::Thin,
989 Some("fat") => Lto::Fat,
990 Some(_) => return false,
997 options! {CodegenOptions, CodegenSetter, basic_codegen_options,
998 build_codegen_options, "C", "codegen",
999 CG_OPTIONS, cg_type_desc, cgsetters,
1000 ar: Option<String> = (None, parse_opt_string, [UNTRACKED],
1001 "this option is deprecated and does nothing"),
1002 linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
1003 "system linker to link outputs with"),
1004 link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1005 "a single extra argument to append to the linker invocation (can be used several times)"),
1006 link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1007 "extra arguments to append to the linker invocation (space separated)"),
1008 link_dead_code: bool = (false, parse_bool, [UNTRACKED],
1009 "don't let linker strip dead code (turning it on can be used for code coverage)"),
1010 lto: Lto = (Lto::No, parse_lto, [TRACKED],
1011 "perform LLVM link-time optimizations"),
1012 target_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
1013 "select target processor (rustc --print target-cpus for details)"),
1014 target_feature: String = ("".to_string(), parse_string, [TRACKED],
1015 "target specific attributes (rustc --print target-features for details)"),
1016 passes: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1017 "a list of extra LLVM passes to run (space separated)"),
1018 llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1019 "a list of arguments to pass to llvm (space separated)"),
1020 save_temps: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1021 "`-C save-temps` might not produce all requested temporary products \
1022 when incremental compilation is enabled.")],
1023 "save all temporary output files during compilation"),
1024 rpath: bool = (false, parse_bool, [UNTRACKED],
1025 "set rpath values in libs/exes"),
1026 overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1027 "use overflow checks for integer arithmetic"),
1028 no_prepopulate_passes: bool = (false, parse_bool, [TRACKED],
1029 "don't pre-populate the pass manager with a list of passes"),
1030 no_vectorize_loops: bool = (false, parse_bool, [TRACKED],
1031 "don't run the loop vectorization optimization passes"),
1032 no_vectorize_slp: bool = (false, parse_bool, [TRACKED],
1033 "don't run LLVM's SLP vectorization pass"),
1034 soft_float: bool = (false, parse_bool, [TRACKED],
1035 "use soft float ABI (*eabihf targets only)"),
1036 prefer_dynamic: bool = (false, parse_bool, [TRACKED],
1037 "prefer dynamic linking to static linking"),
1038 no_integrated_as: bool = (false, parse_bool, [TRACKED],
1039 "use an external assembler rather than LLVM's integrated one"),
1040 no_redzone: Option<bool> = (None, parse_opt_bool, [TRACKED],
1041 "disable the use of the redzone"),
1042 relocation_model: Option<String> = (None, parse_opt_string, [TRACKED],
1043 "choose the relocation model to use (rustc --print relocation-models for details)"),
1044 code_model: Option<String> = (None, parse_opt_string, [TRACKED],
1045 "choose the code model to use (rustc --print code-models for details)"),
1046 metadata: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1047 "metadata to mangle symbol names with"),
1048 extra_filename: String = ("".to_string(), parse_string, [UNTRACKED],
1049 "extra data to put in each output filename"),
1050 codegen_units: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1051 "divide crate into N units to optimize in parallel"),
1052 remark: Passes = (SomePasses(Vec::new()), parse_passes, [UNTRACKED],
1053 "print remarks for these optimization passes (space separated, or \"all\")"),
1054 no_stack_check: bool = (false, parse_bool, [UNTRACKED],
1055 "the --no-stack-check flag is deprecated and does nothing"),
1056 debuginfo: Option<usize> = (None, parse_opt_uint, [TRACKED],
1057 "debug info emission level, 0 = no debug info, 1 = line tables only, \
1058 2 = full debug info with variable and type information"),
1059 opt_level: Option<String> = (None, parse_opt_string, [TRACKED],
1060 "optimize with possible levels 0-3, s, or z"),
1061 debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
1062 "explicitly enable the cfg(debug_assertions) directive"),
1063 inline_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
1064 "set the threshold for inlining a function (default: 225)"),
1065 panic: Option<PanicStrategy> = (None, parse_panic_strategy,
1066 [TRACKED], "panic strategy to compile crate with"),
1067 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1068 "enable incremental compilation"),
1071 options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
1072 build_debugging_options, "Z", "debugging",
1073 DB_OPTIONS, db_type_desc, dbsetters,
1074 codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
1075 "the backend to use"),
1076 verbose: bool = (false, parse_bool, [UNTRACKED],
1077 "in general, enable more debug printouts"),
1078 span_free_formats: bool = (false, parse_bool, [UNTRACKED],
1079 "when debug-printing compiler state, do not include spans"), // o/w tests have closure@path
1080 identify_regions: bool = (false, parse_bool, [UNTRACKED],
1081 "make unnamed regions display as '# (where # is some non-ident unique id)"),
1082 emit_end_regions: bool = (false, parse_bool, [UNTRACKED],
1083 "emit EndRegion as part of MIR; enable transforms that solely process EndRegion"),
1084 borrowck: Option<String> = (None, parse_opt_string, [UNTRACKED],
1085 "select which borrowck is used (`ast`, `mir`, or `compare`)"),
1086 two_phase_borrows: bool = (false, parse_bool, [UNTRACKED],
1087 "use two-phase reserved/active distinction for `&mut` borrows in MIR borrowck"),
1088 time_passes: bool = (false, parse_bool, [UNTRACKED],
1089 "measure time of each rustc pass"),
1090 count_llvm_insns: bool = (false, parse_bool,
1091 [UNTRACKED_WITH_WARNING(true,
1092 "The output generated by `-Z count_llvm_insns` might not be reliable \
1093 when used with incremental compilation")],
1094 "count where LLVM instrs originate"),
1095 time_llvm_passes: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1096 "The output of `-Z time-llvm-passes` will only reflect timings of \
1097 re-translated modules when used with incremental compilation" )],
1098 "measure time of each LLVM pass"),
1099 input_stats: bool = (false, parse_bool, [UNTRACKED],
1100 "gather statistics about the input"),
1101 trans_stats: bool = (false, parse_bool, [UNTRACKED_WITH_WARNING(true,
1102 "The output of `-Z trans-stats` might not be accurate when incremental \
1103 compilation is enabled")],
1104 "gather trans statistics"),
1105 asm_comments: bool = (false, parse_bool, [TRACKED],
1106 "generate comments into the assembly (may change behavior)"),
1107 no_verify: bool = (false, parse_bool, [TRACKED],
1108 "skip LLVM verification"),
1109 borrowck_stats: bool = (false, parse_bool, [UNTRACKED],
1110 "gather borrowck statistics"),
1111 no_landing_pads: bool = (false, parse_bool, [TRACKED],
1112 "omit landing pads for unwinding"),
1113 fewer_names: bool = (false, parse_bool, [TRACKED],
1114 "reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR)"),
1115 meta_stats: bool = (false, parse_bool, [UNTRACKED],
1116 "gather metadata statistics"),
1117 print_link_args: bool = (false, parse_bool, [UNTRACKED],
1118 "print the arguments passed to the linker"),
1119 print_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
1120 "prints the llvm optimization passes being run"),
1121 ast_json: bool = (false, parse_bool, [UNTRACKED],
1122 "print the AST as JSON and halt"),
1123 query_threads: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
1124 "execute queries on a thread pool with N threads"),
1125 ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED],
1126 "print the pre-expansion AST as JSON and halt"),
1127 ls: bool = (false, parse_bool, [UNTRACKED],
1128 "list the symbols defined by a library crate"),
1129 save_analysis: bool = (false, parse_bool, [UNTRACKED],
1130 "write syntax and type analysis (in JSON format) information, in \
1131 addition to normal output"),
1132 flowgraph_print_loans: bool = (false, parse_bool, [UNTRACKED],
1133 "include loan analysis data in -Z unpretty flowgraph output"),
1134 flowgraph_print_moves: bool = (false, parse_bool, [UNTRACKED],
1135 "include move analysis data in -Z unpretty flowgraph output"),
1136 flowgraph_print_assigns: bool = (false, parse_bool, [UNTRACKED],
1137 "include assignment analysis data in -Z unpretty flowgraph output"),
1138 flowgraph_print_all: bool = (false, parse_bool, [UNTRACKED],
1139 "include all dataflow analysis data in -Z unpretty flowgraph output"),
1140 print_region_graph: bool = (false, parse_bool, [UNTRACKED],
1141 "prints region inference graph. \
1142 Use with RUST_REGION_GRAPH=help for more info"),
1143 parse_only: bool = (false, parse_bool, [UNTRACKED],
1144 "parse only; do not compile, assemble, or link"),
1145 no_trans: bool = (false, parse_bool, [TRACKED],
1146 "run all passes except translation; no output"),
1147 treat_err_as_bug: bool = (false, parse_bool, [TRACKED],
1148 "treat all errors that occur as bugs"),
1149 external_macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
1150 "show macro backtraces even for non-local macros"),
1151 teach: bool = (false, parse_bool, [TRACKED],
1152 "show extended diagnostic help"),
1153 continue_parse_after_error: bool = (false, parse_bool, [TRACKED],
1154 "attempt to recover from parse errors (experimental)"),
1155 incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
1156 "enable incremental compilation (experimental)"),
1157 incremental_queries: bool = (true, parse_bool, [UNTRACKED],
1158 "enable incremental compilation support for queries (experimental)"),
1159 incremental_info: bool = (false, parse_bool, [UNTRACKED],
1160 "print high-level information about incremental reuse (or the lack thereof)"),
1161 incremental_dump_hash: bool = (false, parse_bool, [UNTRACKED],
1162 "dump hash information in textual format to stdout"),
1163 incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
1164 "verify incr. comp. hashes of green query instances"),
1165 incremental_ignore_spans: bool = (false, parse_bool, [UNTRACKED],
1166 "ignore spans during ICH computation -- used for testing"),
1167 dump_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1168 "dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv)"),
1169 query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
1170 "enable queries of the dependency graph for regression testing"),
1171 profile_queries: bool = (false, parse_bool, [UNTRACKED],
1172 "trace and profile the queries of the incremental compilation framework"),
1173 profile_queries_and_keys: bool = (false, parse_bool, [UNTRACKED],
1174 "trace and profile the queries and keys of the incremental compilation framework"),
1175 no_analysis: bool = (false, parse_bool, [UNTRACKED],
1176 "parse and expand the source, but run no analysis"),
1177 extra_plugins: Vec<String> = (Vec::new(), parse_list, [TRACKED],
1178 "load extra plugins"),
1179 unstable_options: bool = (false, parse_bool, [UNTRACKED],
1180 "adds unstable command line options to rustc interface"),
1181 force_overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
1182 "force overflow checks on or off"),
1183 trace_macros: bool = (false, parse_bool, [UNTRACKED],
1184 "for every macro invocation, print its name and arguments"),
1185 debug_macros: bool = (false, parse_bool, [TRACKED],
1186 "emit line numbers debug info inside macros"),
1187 enable_nonzeroing_move_hints: bool = (false, parse_bool, [TRACKED],
1188 "force nonzeroing move optimization on"),
1189 keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED],
1190 "don't clear the hygiene data after analysis"),
1191 keep_ast: bool = (false, parse_bool, [UNTRACKED],
1192 "keep the AST after lowering it to HIR"),
1193 show_span: Option<String> = (None, parse_opt_string, [TRACKED],
1194 "show spans for compiler debugging (expr|pat|ty)"),
1195 print_type_sizes: bool = (false, parse_bool, [UNTRACKED],
1196 "print layout information for each type encountered"),
1197 print_trans_items: Option<String> = (None, parse_opt_string, [UNTRACKED],
1198 "print the result of the translation item collection pass"),
1199 mir_opt_level: usize = (1, parse_uint, [TRACKED],
1200 "set the MIR optimization level (0-3, default: 1)"),
1201 mutable_noalias: bool = (false, parse_bool, [UNTRACKED],
1202 "emit noalias metadata for mutable references"),
1203 dump_mir: Option<String> = (None, parse_opt_string, [UNTRACKED],
1204 "dump MIR state at various points in translation"),
1205 dump_mir_dir: String = (String::from("mir_dump"), parse_string, [UNTRACKED],
1206 "the directory the MIR is dumped into"),
1207 dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED],
1208 "in addition to `.mir` files, create graphviz `.dot` files"),
1209 dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED],
1210 "if set, exclude the pass number when dumping MIR (used in tests)"),
1211 mir_emit_validate: usize = (0, parse_uint, [TRACKED],
1212 "emit Validate MIR statements, interpreted e.g. by miri (0: do not emit; 1: if function \
1213 contains unsafe block, only validate arguments; 2: always emit full validation)"),
1214 perf_stats: bool = (false, parse_bool, [UNTRACKED],
1215 "print some performance-related statistics"),
1216 hir_stats: bool = (false, parse_bool, [UNTRACKED],
1217 "print some statistics about AST and HIR"),
1218 mir_stats: bool = (false, parse_bool, [UNTRACKED],
1219 "print some statistics about MIR"),
1220 always_encode_mir: bool = (false, parse_bool, [TRACKED],
1221 "encode MIR of all functions into the crate metadata"),
1222 miri: bool = (false, parse_bool, [TRACKED],
1223 "check the miri const evaluator against the old ctfe"),
1224 osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
1225 "pass `-install_name @rpath/...` to the macOS linker"),
1226 sanitizer: Option<Sanitizer> = (None, parse_sanitizer, [TRACKED],
1228 linker_flavor: Option<LinkerFlavor> = (None, parse_linker_flavor, [UNTRACKED],
1230 fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
1231 "set the optimization fuel quota for a crate"),
1232 print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
1233 "make Rustc print the total optimization fuel used by a crate"),
1234 remap_path_prefix_from: Vec<PathBuf> = (vec![], parse_pathbuf_push, [TRACKED],
1235 "add a source pattern to the file path remapping config"),
1236 remap_path_prefix_to: Vec<PathBuf> = (vec![], parse_pathbuf_push, [TRACKED],
1237 "add a mapping target to the file path remapping config"),
1238 force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
1239 "force all crates to be `rustc_private` unstable"),
1240 pre_link_arg: Vec<String> = (vec![], parse_string_push, [UNTRACKED],
1241 "a single extra argument to prepend the linker invocation (can be used several times)"),
1242 pre_link_args: Option<Vec<String>> = (None, parse_opt_list, [UNTRACKED],
1243 "extra arguments to prepend to the linker invocation (space separated)"),
1244 profile: bool = (false, parse_bool, [TRACKED],
1245 "insert profiling code"),
1246 relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
1247 "choose which RELRO level to use"),
1248 nll: bool = (false, parse_bool, [UNTRACKED],
1249 "run the non-lexical lifetimes MIR pass"),
1250 nll_dump_cause: bool = (false, parse_bool, [UNTRACKED],
1251 "dump cause information when reporting errors from NLL"),
1252 trans_time_graph: bool = (false, parse_bool, [UNTRACKED],
1253 "generate a graphical HTML report of time spent in trans and LLVM"),
1254 thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
1255 "enable ThinLTO when possible"),
1256 inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
1257 "control whether #[inline] functions are in all cgus"),
1258 tls_model: Option<String> = (None, parse_opt_string, [TRACKED],
1259 "choose the TLS model to use (rustc --print tls-models for details)"),
1260 saturating_float_casts: bool = (false, parse_bool, [TRACKED],
1261 "make float->int casts UB-free: numbers outside the integer type's range are clipped to \
1262 the max/min integer respectively, and NaN is mapped to 0"),
1263 lower_128bit_ops: Option<bool> = (None, parse_opt_bool, [TRACKED],
1264 "rewrite operators on i128 and u128 into lang item calls (typically provided \
1265 by compiler-builtins) so translation doesn't need to support them,
1266 overriding the default for the current target"),
1267 human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
1268 "generate human-readable, predictable names for codegen units"),
1269 dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
1270 "in dep-info output, omit targets for tracking dependencies of the dep-info files \
1272 approximate_suggestions: bool = (false, parse_bool, [UNTRACKED],
1273 "include machine-applicability of suggestions in JSON output"),
1274 unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
1275 "Present the input source, unstable (and less-pretty) variants;
1276 valid types are any of the types for `--pretty`, as well as:
1277 `flowgraph=<nodeid>` (graphviz formatted flowgraph for node),
1278 `everybody_loops` (all function bodies replaced with `loop {}`),
1279 `hir` (the HIR), `hir,identified`, or
1280 `hir,typed` (HIR with types for each node)."),
1283 pub fn default_lib_output() -> CrateType {
1287 pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
1288 let end = &sess.target.target.target_endian;
1289 let arch = &sess.target.target.arch;
1290 let wordsz = &sess.target.target.target_pointer_width;
1291 let os = &sess.target.target.target_os;
1292 let env = &sess.target.target.target_env;
1293 let vendor = &sess.target.target.target_vendor;
1294 let min_atomic_width = sess.target.target.min_atomic_width();
1295 let max_atomic_width = sess.target.target.max_atomic_width();
1297 let mut ret = HashSet::new();
1299 ret.insert((Symbol::intern("target_os"), Some(Symbol::intern(os))));
1300 if let Some(ref fam) = sess.target.target.options.target_family {
1301 ret.insert((Symbol::intern("target_family"), Some(Symbol::intern(fam))));
1302 if fam == "windows" || fam == "unix" {
1303 ret.insert((Symbol::intern(fam), None));
1306 ret.insert((Symbol::intern("target_arch"), Some(Symbol::intern(arch))));
1307 ret.insert((Symbol::intern("target_endian"), Some(Symbol::intern(end))));
1308 ret.insert((Symbol::intern("target_pointer_width"), Some(Symbol::intern(wordsz))));
1309 ret.insert((Symbol::intern("target_env"), Some(Symbol::intern(env))));
1310 ret.insert((Symbol::intern("target_vendor"), Some(Symbol::intern(vendor))));
1311 if sess.target.target.options.has_elf_tls {
1312 ret.insert((Symbol::intern("target_thread_local"), None));
1314 for &i in &[8, 16, 32, 64, 128] {
1315 if i >= min_atomic_width && i <= max_atomic_width {
1316 let s = i.to_string();
1317 ret.insert((Symbol::intern("target_has_atomic"), Some(Symbol::intern(&s))));
1319 ret.insert((Symbol::intern("target_has_atomic"), Some(Symbol::intern("ptr"))));
1323 if sess.opts.debug_assertions {
1324 ret.insert((Symbol::intern("debug_assertions"), None));
1326 if sess.opts.crate_types.contains(&CrateTypeProcMacro) {
1327 ret.insert((Symbol::intern("proc_macro"), None));
1332 pub fn build_configuration(sess: &Session,
1333 mut user_cfg: ast::CrateConfig)
1334 -> ast::CrateConfig {
1335 // Combine the configuration requested by the session (command line) with
1336 // some default and generated configuration items
1337 let default_cfg = default_configuration(sess);
1338 // If the user wants a test runner, then add the test cfg
1340 user_cfg.insert((Symbol::intern("test"), None));
1342 user_cfg.extend(default_cfg.iter().cloned());
1346 pub fn build_target_config(opts: &Options, sp: &Handler) -> Config {
1347 let target = match Target::search(&opts.target_triple) {
1350 sp.struct_fatal(&format!("Error loading target specification: {}", e))
1351 .help("Use `--print target-list` for a list of built-in targets")
1357 let (isize_ty, usize_ty) = match &target.target_pointer_width[..] {
1358 "16" => (ast::IntTy::I16, ast::UintTy::U16),
1359 "32" => (ast::IntTy::I32, ast::UintTy::U32),
1360 "64" => (ast::IntTy::I64, ast::UintTy::U64),
1361 w => sp.fatal(&format!("target specification was invalid: \
1362 unrecognized target-pointer-width {}", w)).raise(),
1372 #[derive(Copy, Clone, PartialEq, Eq, Debug)]
1373 pub enum OptionStability {
1379 pub struct RustcOptGroup {
1380 pub apply: Box<Fn(&mut getopts::Options) -> &mut getopts::Options>,
1381 pub name: &'static str,
1382 pub stability: OptionStability,
1385 impl RustcOptGroup {
1386 pub fn is_stable(&self) -> bool {
1387 self.stability == OptionStability::Stable
1390 pub fn stable<F>(name: &'static str, f: F) -> RustcOptGroup
1391 where F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1396 stability: OptionStability::Stable,
1400 pub fn unstable<F>(name: &'static str, f: F) -> RustcOptGroup
1401 where F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static,
1406 stability: OptionStability::Unstable,
1411 // The `opt` local module holds wrappers around the `getopts` API that
1412 // adds extra rustc-specific metadata to each option; such metadata
1413 // is exposed by . The public
1414 // functions below ending with `_u` are the functions that return
1415 // *unstable* options, i.e. options that are only enabled when the
1416 // user also passes the `-Z unstable-options` debugging flag.
1418 // The `fn opt_u` etc below are written so that we can use them
1419 // in the future; do not warn about them not being used right now.
1420 #![allow(dead_code)]
1423 use super::RustcOptGroup;
1425 pub type R = RustcOptGroup;
1426 pub type S = &'static str;
1428 fn stable<F>(name: S, f: F) -> R
1429 where F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static
1431 RustcOptGroup::stable(name, f)
1434 fn unstable<F>(name: S, f: F) -> R
1435 where F: Fn(&mut getopts::Options) -> &mut getopts::Options + 'static
1437 RustcOptGroup::unstable(name, f)
1440 fn longer(a: S, b: S) -> S {
1441 if a.len() > b.len() {
1448 pub fn opt_s(a: S, b: S, c: S, d: S) -> R {
1449 stable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1451 pub fn multi_s(a: S, b: S, c: S, d: S) -> R {
1452 stable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1454 pub fn flag_s(a: S, b: S, c: S) -> R {
1455 stable(longer(a, b), move |opts| opts.optflag(a, b, c))
1457 pub fn flagopt_s(a: S, b: S, c: S, d: S) -> R {
1458 stable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1460 pub fn flagmulti_s(a: S, b: S, c: S) -> R {
1461 stable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1464 pub fn opt(a: S, b: S, c: S, d: S) -> R {
1465 unstable(longer(a, b), move |opts| opts.optopt(a, b, c, d))
1467 pub fn multi(a: S, b: S, c: S, d: S) -> R {
1468 unstable(longer(a, b), move |opts| opts.optmulti(a, b, c, d))
1470 pub fn flag(a: S, b: S, c: S) -> R {
1471 unstable(longer(a, b), move |opts| opts.optflag(a, b, c))
1473 pub fn flagopt(a: S, b: S, c: S, d: S) -> R {
1474 unstable(longer(a, b), move |opts| opts.optflagopt(a, b, c, d))
1476 pub fn flagmulti(a: S, b: S, c: S) -> R {
1477 unstable(longer(a, b), move |opts| opts.optflagmulti(a, b, c))
1481 /// Returns the "short" subset of the rustc command line options,
1482 /// including metadata for each option, such as whether the option is
1483 /// part of the stable long-term interface for rustc.
1484 pub fn rustc_short_optgroups() -> Vec<RustcOptGroup> {
1486 opt::flag_s("h", "help", "Display this message"),
1487 opt::multi_s("", "cfg", "Configure the compilation environment", "SPEC"),
1488 opt::multi_s("L", "", "Add a directory to the library search path. The
1489 optional KIND can be one of dependency, crate, native,
1490 framework or all (the default).", "[KIND=]PATH"),
1491 opt::multi_s("l", "", "Link the generated crate(s) to the specified native
1492 library NAME. The optional KIND can be one of
1493 static, dylib, or framework. If omitted, dylib is
1494 assumed.", "[KIND=]NAME"),
1495 opt::multi_s("", "crate-type", "Comma separated list of types of crates
1496 for the compiler to emit",
1497 "[bin|lib|rlib|dylib|cdylib|staticlib|proc-macro]"),
1498 opt::opt_s("", "crate-name", "Specify the name of the crate being built",
1500 opt::multi_s("", "emit", "Comma separated list of types of output for \
1501 the compiler to emit",
1502 "[asm|llvm-bc|llvm-ir|obj|metadata|link|dep-info|mir]"),
1503 opt::multi_s("", "print", "Comma separated list of compiler information to \
1505 "[crate-name|file-names|sysroot|cfg|target-list|\
1506 target-cpus|target-features|relocation-models|\
1507 code-models|tls-models|target-spec-json|native-static-libs]"),
1508 opt::flagmulti_s("g", "", "Equivalent to -C debuginfo=2"),
1509 opt::flagmulti_s("O", "", "Equivalent to -C opt-level=2"),
1510 opt::opt_s("o", "", "Write output to <filename>", "FILENAME"),
1511 opt::opt_s("", "out-dir", "Write output to compiler-chosen filename \
1513 opt::opt_s("", "explain", "Provide a detailed explanation of an error \
1515 opt::flag_s("", "test", "Build a test harness"),
1516 opt::opt_s("", "target", "Target triple for which the code is compiled", "TARGET"),
1517 opt::multi_s("W", "warn", "Set lint warnings", "OPT"),
1518 opt::multi_s("A", "allow", "Set lint allowed", "OPT"),
1519 opt::multi_s("D", "deny", "Set lint denied", "OPT"),
1520 opt::multi_s("F", "forbid", "Set lint forbidden", "OPT"),
1521 opt::multi_s("", "cap-lints", "Set the most restrictive lint level. \
1522 More restrictive lints are capped at this \
1524 opt::multi_s("C", "codegen", "Set a codegen option", "OPT[=VALUE]"),
1525 opt::flag_s("V", "version", "Print version info and exit"),
1526 opt::flag_s("v", "verbose", "Use verbose output"),
1530 /// Returns all rustc command line options, including metadata for
1531 /// each option, such as whether the option is part of the stable
1532 /// long-term interface for rustc.
1533 pub fn rustc_optgroups() -> Vec<RustcOptGroup> {
1534 let mut opts = rustc_short_optgroups();
1536 opt::multi_s("", "extern", "Specify where an external rust library is located",
1538 opt::opt_s("", "sysroot", "Override the system root", "PATH"),
1539 opt::multi("Z", "", "Set internal debugging options", "FLAG"),
1540 opt::opt_s("", "error-format",
1541 "How errors and other messages are produced",
1542 "human|json|short"),
1543 opt::opt_s("", "color", "Configure coloring of output:
1544 auto = colorize, if output goes to a tty (default);
1545 always = always colorize output;
1546 never = never colorize output", "auto|always|never"),
1548 opt::opt("", "pretty",
1549 "Pretty-print the input instead of compiling;
1550 valid types are: `normal` (un-annotated source),
1551 `expanded` (crates expanded), or
1552 `expanded,identified` (fully parenthesized, AST nodes with IDs).",
1558 // Convert strings provided as --cfg [cfgspec] into a crate_cfg
1559 pub fn parse_cfgspecs(cfgspecs: Vec<String> ) -> ast::CrateConfig {
1560 cfgspecs.into_iter().map(|s| {
1561 let sess = parse::ParseSess::new(FilePathMapping::empty());
1563 parse::new_parser_from_source_str(&sess, FileName::CfgSpec, s.to_string());
1565 let meta_item = panictry!(parser.parse_meta_item());
1567 if parser.token != token::Eof {
1568 early_error(ErrorOutputType::default(), &format!("invalid --cfg argument: {}", s))
1569 } else if meta_item.is_meta_item_list() {
1571 format!("invalid predicate in --cfg command line argument: `{}`", meta_item.name());
1572 early_error(ErrorOutputType::default(), &msg)
1575 (meta_item.name(), meta_item.value_str())
1576 }).collect::<ast::CrateConfig>()
1579 pub fn build_session_options_and_crate_config(matches: &getopts::Matches)
1580 -> (Options, ast::CrateConfig) {
1581 let color = match matches.opt_str("color").as_ref().map(|s| &s[..]) {
1582 Some("auto") => ColorConfig::Auto,
1583 Some("always") => ColorConfig::Always,
1584 Some("never") => ColorConfig::Never,
1586 None => ColorConfig::Auto,
1589 early_error(ErrorOutputType::default(), &format!("argument for --color must be auto, \
1590 always or never (instead was `{}`)",
1595 // We need the opts_present check because the driver will send us Matches
1596 // with only stable options if no unstable options are used. Since error-format
1597 // is unstable, it will not be present. We have to use opts_present not
1598 // opt_present because the latter will panic.
1599 let error_format = if matches.opts_present(&["error-format".to_owned()]) {
1600 match matches.opt_str("error-format").as_ref().map(|s| &s[..]) {
1601 Some("human") => ErrorOutputType::HumanReadable(color),
1602 Some("json") => ErrorOutputType::Json(false),
1603 Some("pretty-json") => ErrorOutputType::Json(true),
1605 if nightly_options::is_unstable_enabled(matches) {
1606 ErrorOutputType::Short(color)
1608 early_error(ErrorOutputType::default(),
1609 &format!("the `-Z unstable-options` flag must also be passed to \
1610 enable the short error message option"));
1613 None => ErrorOutputType::HumanReadable(color),
1616 early_error(ErrorOutputType::HumanReadable(color),
1617 &format!("argument for --error-format must be `human`, `json` or \
1618 `short` (instead was `{}`)",
1623 ErrorOutputType::HumanReadable(color)
1626 let unparsed_crate_types = matches.opt_strs("crate-type");
1627 let crate_types = parse_crate_types_from_list(unparsed_crate_types)
1628 .unwrap_or_else(|e| early_error(error_format, &e[..]));
1630 let mut lint_opts = vec![];
1631 let mut describe_lints = false;
1633 for &level in &[lint::Allow, lint::Warn, lint::Deny, lint::Forbid] {
1634 for lint_name in matches.opt_strs(level.as_str()) {
1635 if lint_name == "help" {
1636 describe_lints = true;
1638 lint_opts.push((lint_name.replace("-", "_"), level));
1643 let lint_cap = matches.opt_str("cap-lints").map(|cap| {
1644 lint::Level::from_str(&cap).unwrap_or_else(|| {
1645 early_error(error_format, &format!("unknown lint level: `{}`", cap))
1649 let mut debugging_opts = build_debugging_options(matches, error_format);
1651 if !debugging_opts.unstable_options && error_format == ErrorOutputType::Json(true) {
1652 early_error(ErrorOutputType::Json(false), "--error-format=pretty-json is unstable");
1655 let mut output_types = BTreeMap::new();
1656 if !debugging_opts.parse_only {
1657 for list in matches.opt_strs("emit") {
1658 for output_type in list.split(',') {
1659 let mut parts = output_type.splitn(2, '=');
1660 let shorthand = parts.next().unwrap();
1661 let output_type = match OutputType::from_shorthand(shorthand) {
1662 Some(output_type) => output_type,
1663 None => early_error(error_format, &format!(
1664 "unknown emission type: `{}` - expected one of: {}",
1665 shorthand, OutputType::shorthands_display(),
1668 let path = parts.next().map(PathBuf::from);
1669 output_types.insert(output_type, path);
1673 if output_types.is_empty() {
1674 output_types.insert(OutputType::Exe, None);
1677 let remap_path_prefix_sources = debugging_opts.remap_path_prefix_from.len();
1678 let remap_path_prefix_targets = debugging_opts.remap_path_prefix_from.len();
1680 if remap_path_prefix_targets < remap_path_prefix_sources {
1681 for source in &debugging_opts.remap_path_prefix_from[remap_path_prefix_targets..] {
1682 early_error(error_format,
1683 &format!("option `-Zremap-path-prefix-from='{}'` does not have \
1684 a corresponding `-Zremap-path-prefix-to`", source.display()))
1686 } else if remap_path_prefix_targets > remap_path_prefix_sources {
1687 for target in &debugging_opts.remap_path_prefix_to[remap_path_prefix_sources..] {
1688 early_error(error_format,
1689 &format!("option `-Zremap-path-prefix-to='{}'` does not have \
1690 a corresponding `-Zremap-path-prefix-from`", target.display()))
1694 let mut cg = build_codegen_options(matches, error_format);
1695 let mut codegen_units = cg.codegen_units;
1696 let mut disable_thinlto = false;
1698 // Issue #30063: if user requests llvm-related output to one
1699 // particular path, disable codegen-units.
1700 let incompatible: Vec<_> = output_types.iter()
1701 .map(|ot_path| ot_path.0)
1703 !ot.is_compatible_with_codegen_units_and_single_output_file()
1705 .map(|ot| ot.shorthand())
1707 if !incompatible.is_empty() {
1708 match codegen_units {
1709 Some(n) if n > 1 => {
1710 if matches.opt_present("o") {
1711 for ot in &incompatible {
1712 early_warn(error_format, &format!("--emit={} with -o incompatible with \
1713 -C codegen-units=N for N > 1",
1716 early_warn(error_format, "resetting to default -C codegen-units=1");
1717 codegen_units = Some(1);
1718 disable_thinlto = true;
1722 codegen_units = Some(1);
1723 disable_thinlto = true;
1728 if debugging_opts.query_threads == Some(0) {
1729 early_error(error_format, "Value for query threads must be a positive nonzero integer");
1732 if codegen_units == Some(0) {
1733 early_error(error_format, "Value for codegen units must be a positive nonzero integer");
1736 let incremental = match (&debugging_opts.incremental, &cg.incremental) {
1737 (&Some(ref path1), &Some(ref path2)) => {
1739 early_error(error_format,
1740 &format!("conflicting paths for `-Z incremental` and \
1741 `-C incremental` specified: {} versus {}",
1748 (&Some(ref path), &None) => Some(path),
1749 (&None, &Some(ref path)) => Some(path),
1750 (&None, &None) => None,
1751 }.map(|m| PathBuf::from(m));
1753 if cg.lto != Lto::No && incremental.is_some() {
1754 early_error(error_format, "can't perform LTO when compiling incrementally");
1757 let mut prints = Vec::<PrintRequest>::new();
1758 if cg.target_cpu.as_ref().map_or(false, |s| s == "help") {
1759 prints.push(PrintRequest::TargetCPUs);
1760 cg.target_cpu = None;
1762 if cg.target_feature == "help" {
1763 prints.push(PrintRequest::TargetFeatures);
1764 cg.target_feature = "".to_string();
1766 if cg.relocation_model.as_ref().map_or(false, |s| s == "help") {
1767 prints.push(PrintRequest::RelocationModels);
1768 cg.relocation_model = None;
1770 if cg.code_model.as_ref().map_or(false, |s| s == "help") {
1771 prints.push(PrintRequest::CodeModels);
1772 cg.code_model = None;
1774 if debugging_opts.tls_model.as_ref().map_or(false, |s| s == "help") {
1775 prints.push(PrintRequest::TlsModels);
1776 debugging_opts.tls_model = None;
1781 let sysroot_opt = matches.opt_str("sysroot").map(|m| PathBuf::from(&m));
1782 let target = matches.opt_str("target").unwrap_or(
1783 host_triple().to_string());
1785 if matches.opt_present("O") {
1786 if cg.opt_level.is_some() {
1787 early_error(error_format, "-O and -C opt-level both provided");
1791 match (cg.opt_level.as_ref().map(String::as_ref),
1792 nightly_options::is_nightly_build()) {
1793 (None, _) => OptLevel::No,
1794 (Some("0"), _) => OptLevel::No,
1795 (Some("1"), _) => OptLevel::Less,
1796 (Some("2"), _) => OptLevel::Default,
1797 (Some("3"), _) => OptLevel::Aggressive,
1798 (Some("s"), true) => OptLevel::Size,
1799 (Some("z"), true) => OptLevel::SizeMin,
1800 (Some("s"), false) | (Some("z"), false) => {
1801 early_error(error_format, &format!("the optimizations s or z are only \
1802 accepted on the nightly compiler"));
1805 early_error(error_format, &format!("optimization level needs to be \
1806 between 0-3 (instead was `{}`)",
1812 let debug_assertions = cg.debug_assertions.unwrap_or(opt_level == OptLevel::No);
1813 let debuginfo = if matches.opt_present("g") {
1814 if cg.debuginfo.is_some() {
1815 early_error(error_format, "-g and -C debuginfo both provided");
1819 match cg.debuginfo {
1820 None | Some(0) => NoDebugInfo,
1821 Some(1) => LimitedDebugInfo,
1822 Some(2) => FullDebugInfo,
1824 early_error(error_format, &format!("debug info level needs to be between \
1825 0-2 (instead was `{}`)",
1831 let mut search_paths = SearchPaths::new();
1832 for s in &matches.opt_strs("L") {
1833 search_paths.add_path(&s[..], error_format);
1836 let libs = matches.opt_strs("l").into_iter().map(|s| {
1837 // Parse string of the form "[KIND=]lib[:new_name]",
1838 // where KIND is one of "dylib", "framework", "static".
1839 let mut parts = s.splitn(2, '=');
1840 let kind = parts.next().unwrap();
1841 let (name, kind) = match (parts.next(), kind) {
1842 (None, name) => (name, None),
1843 (Some(name), "dylib") => (name, Some(cstore::NativeUnknown)),
1844 (Some(name), "framework") => (name, Some(cstore::NativeFramework)),
1845 (Some(name), "static") => (name, Some(cstore::NativeStatic)),
1846 (Some(name), "static-nobundle") => (name, Some(cstore::NativeStaticNobundle)),
1848 early_error(error_format, &format!("unknown library kind `{}`, expected \
1849 one of dylib, framework, or static",
1853 if kind == Some(cstore::NativeStaticNobundle) && !nightly_options::is_nightly_build() {
1854 early_error(error_format, &format!("the library kind 'static-nobundle' is only \
1855 accepted on the nightly compiler"));
1857 let mut name_parts = name.splitn(2, ':');
1858 let name = name_parts.next().unwrap();
1859 let new_name = name_parts.next();
1860 (name.to_string(), new_name.map(|n| n.to_string()), kind)
1863 let cfg = parse_cfgspecs(matches.opt_strs("cfg"));
1864 let test = matches.opt_present("test");
1866 prints.extend(matches.opt_strs("print").into_iter().map(|s| {
1868 "crate-name" => PrintRequest::CrateName,
1869 "file-names" => PrintRequest::FileNames,
1870 "sysroot" => PrintRequest::Sysroot,
1871 "cfg" => PrintRequest::Cfg,
1872 "target-list" => PrintRequest::TargetList,
1873 "target-cpus" => PrintRequest::TargetCPUs,
1874 "target-features" => PrintRequest::TargetFeatures,
1875 "relocation-models" => PrintRequest::RelocationModels,
1876 "code-models" => PrintRequest::CodeModels,
1877 "tls-models" => PrintRequest::TlsModels,
1878 "native-static-libs" => PrintRequest::NativeStaticLibs,
1879 "target-spec-json" => {
1880 if nightly_options::is_unstable_enabled(matches) {
1881 PrintRequest::TargetSpec
1883 early_error(error_format,
1884 &format!("the `-Z unstable-options` flag must also be passed to \
1885 enable the target-spec-json print option"));
1889 early_error(error_format, &format!("unknown print request `{}`", req))
1894 let borrowck_mode = match debugging_opts.borrowck.as_ref().map(|s| &s[..]) {
1895 None | Some("ast") => BorrowckMode::Ast,
1896 Some("mir") => BorrowckMode::Mir,
1897 Some("compare") => BorrowckMode::Compare,
1899 early_error(error_format, &format!("unknown borrowck mode `{}`", m))
1903 if !cg.remark.is_empty() && debuginfo == NoDebugInfo {
1904 early_warn(error_format, "-C remark will not show source locations without \
1908 let mut externs = BTreeMap::new();
1909 for arg in &matches.opt_strs("extern") {
1910 let mut parts = arg.splitn(2, '=');
1911 let name = match parts.next() {
1913 None => early_error(error_format, "--extern value must not be empty"),
1915 let location = match parts.next() {
1917 None => early_error(error_format, "--extern value must be of the format `foo=bar`"),
1920 externs.entry(name.to_string())
1921 .or_insert_with(BTreeSet::new)
1922 .insert(location.to_string());
1925 let crate_name = matches.opt_str("crate-name");
1929 optimize: opt_level,
1934 output_types: OutputTypes(output_types),
1936 maybe_sysroot: sysroot_opt,
1937 target_triple: target,
1945 externs: Externs(externs),
1949 unstable_features: UnstableFeatures::from_environment(),
1951 actually_rustdoc: false,
1952 cli_forced_codegen_units: codegen_units,
1953 cli_forced_thinlto_off: disable_thinlto,
1958 pub fn parse_crate_types_from_list(list_list: Vec<String>)
1959 -> Result<Vec<CrateType>, String> {
1960 let mut crate_types: Vec<CrateType> = Vec::new();
1961 for unparsed_crate_type in &list_list {
1962 for part in unparsed_crate_type.split(',') {
1963 let new_part = match part {
1964 "lib" => default_lib_output(),
1965 "rlib" => CrateTypeRlib,
1966 "staticlib" => CrateTypeStaticlib,
1967 "dylib" => CrateTypeDylib,
1968 "cdylib" => CrateTypeCdylib,
1969 "bin" => CrateTypeExecutable,
1970 "proc-macro" => CrateTypeProcMacro,
1972 return Err(format!("unknown crate type: `{}`",
1976 if !crate_types.contains(&new_part) {
1977 crate_types.push(new_part)
1985 pub mod nightly_options {
1987 use syntax::feature_gate::UnstableFeatures;
1988 use super::{ErrorOutputType, OptionStability, RustcOptGroup};
1989 use session::early_error;
1991 pub fn is_unstable_enabled(matches: &getopts::Matches) -> bool {
1992 is_nightly_build() && matches.opt_strs("Z").iter().any(|x| *x == "unstable-options")
1995 pub fn is_nightly_build() -> bool {
1996 UnstableFeatures::from_environment().is_nightly_build()
1999 pub fn check_nightly_options(matches: &getopts::Matches, flags: &[RustcOptGroup]) {
2000 let has_z_unstable_option = matches.opt_strs("Z").iter().any(|x| *x == "unstable-options");
2001 let really_allows_unstable_options = UnstableFeatures::from_environment()
2002 .is_nightly_build();
2004 for opt in flags.iter() {
2005 if opt.stability == OptionStability::Stable {
2008 if !matches.opt_present(opt.name) {
2011 if opt.name != "Z" && !has_z_unstable_option {
2012 early_error(ErrorOutputType::default(),
2013 &format!("the `-Z unstable-options` flag must also be passed to enable \
2017 if really_allows_unstable_options {
2020 match opt.stability {
2021 OptionStability::Unstable => {
2022 let msg = format!("the option `{}` is only accepted on the \
2023 nightly compiler", opt.name);
2024 early_error(ErrorOutputType::default(), &msg);
2026 OptionStability::Stable => {}
2032 impl fmt::Display for CrateType {
2033 fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
2035 CrateTypeExecutable => "bin".fmt(f),
2036 CrateTypeDylib => "dylib".fmt(f),
2037 CrateTypeRlib => "rlib".fmt(f),
2038 CrateTypeStaticlib => "staticlib".fmt(f),
2039 CrateTypeCdylib => "cdylib".fmt(f),
2040 CrateTypeProcMacro => "proc-macro".fmt(f),
2045 /// Commandline arguments passed to the compiler have to be incorporated with
2046 /// the dependency tracking system for incremental compilation. This module
2047 /// provides some utilities to make this more convenient.
2049 /// The values of all commandline arguments that are relevant for dependency
2050 /// tracking are hashed into a single value that determines whether the
2051 /// incremental compilation cache can be re-used or not. This hashing is done
2052 /// via the DepTrackingHash trait defined below, since the standard Hash
2053 /// implementation might not be suitable (e.g. arguments are stored in a Vec,
2054 /// the hash of which is order dependent, but we might not want the order of
2055 /// arguments to make a difference for the hash).
2057 /// However, since the value provided by Hash::hash often *is* suitable,
2058 /// especially for primitive types, there is the
2059 /// impl_dep_tracking_hash_via_hash!() macro that allows to simply reuse the
2060 /// Hash implementation for DepTrackingHash. It's important though that
2061 /// we have an opt-in scheme here, so one is hopefully forced to think about
2062 /// how the hash should be calculated when adding a new commandline argument.
2066 use session::search_paths::{PathKind, SearchPaths};
2067 use std::collections::BTreeMap;
2068 use std::hash::Hash;
2069 use std::path::PathBuf;
2070 use std::collections::hash_map::DefaultHasher;
2071 use super::{Passes, CrateType, OptLevel, DebugInfoLevel, Lto,
2072 OutputTypes, Externs, ErrorOutputType, Sanitizer};
2073 use syntax::feature_gate::UnstableFeatures;
2074 use rustc_back::{PanicStrategy, RelroLevel};
2076 pub trait DepTrackingHash {
2077 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType);
2080 macro_rules! impl_dep_tracking_hash_via_hash {
2082 impl DepTrackingHash for $t {
2083 fn hash(&self, hasher: &mut DefaultHasher, _: ErrorOutputType) {
2084 Hash::hash(self, hasher);
2090 macro_rules! impl_dep_tracking_hash_for_sortable_vec_of {
2092 impl DepTrackingHash for Vec<$t> {
2093 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2094 let mut elems: Vec<&$t> = self.iter().collect();
2096 Hash::hash(&elems.len(), hasher);
2097 for (index, elem) in elems.iter().enumerate() {
2098 Hash::hash(&index, hasher);
2099 DepTrackingHash::hash(*elem, hasher, error_format);
2106 impl_dep_tracking_hash_via_hash!(bool);
2107 impl_dep_tracking_hash_via_hash!(usize);
2108 impl_dep_tracking_hash_via_hash!(u64);
2109 impl_dep_tracking_hash_via_hash!(String);
2110 impl_dep_tracking_hash_via_hash!(PathBuf);
2111 impl_dep_tracking_hash_via_hash!(lint::Level);
2112 impl_dep_tracking_hash_via_hash!(Option<bool>);
2113 impl_dep_tracking_hash_via_hash!(Option<usize>);
2114 impl_dep_tracking_hash_via_hash!(Option<String>);
2115 impl_dep_tracking_hash_via_hash!(Option<(String, u64)>);
2116 impl_dep_tracking_hash_via_hash!(Option<PanicStrategy>);
2117 impl_dep_tracking_hash_via_hash!(Option<RelroLevel>);
2118 impl_dep_tracking_hash_via_hash!(Option<lint::Level>);
2119 impl_dep_tracking_hash_via_hash!(Option<PathBuf>);
2120 impl_dep_tracking_hash_via_hash!(Option<cstore::NativeLibraryKind>);
2121 impl_dep_tracking_hash_via_hash!(CrateType);
2122 impl_dep_tracking_hash_via_hash!(PanicStrategy);
2123 impl_dep_tracking_hash_via_hash!(RelroLevel);
2124 impl_dep_tracking_hash_via_hash!(Passes);
2125 impl_dep_tracking_hash_via_hash!(OptLevel);
2126 impl_dep_tracking_hash_via_hash!(Lto);
2127 impl_dep_tracking_hash_via_hash!(DebugInfoLevel);
2128 impl_dep_tracking_hash_via_hash!(UnstableFeatures);
2129 impl_dep_tracking_hash_via_hash!(Externs);
2130 impl_dep_tracking_hash_via_hash!(OutputTypes);
2131 impl_dep_tracking_hash_via_hash!(cstore::NativeLibraryKind);
2132 impl_dep_tracking_hash_via_hash!(Sanitizer);
2133 impl_dep_tracking_hash_via_hash!(Option<Sanitizer>);
2135 impl_dep_tracking_hash_for_sortable_vec_of!(String);
2136 impl_dep_tracking_hash_for_sortable_vec_of!(PathBuf);
2137 impl_dep_tracking_hash_for_sortable_vec_of!(CrateType);
2138 impl_dep_tracking_hash_for_sortable_vec_of!((String, lint::Level));
2139 impl_dep_tracking_hash_for_sortable_vec_of!((String, Option<String>,
2140 Option<cstore::NativeLibraryKind>));
2141 impl_dep_tracking_hash_for_sortable_vec_of!((String, u64));
2142 impl DepTrackingHash for SearchPaths {
2143 fn hash(&self, hasher: &mut DefaultHasher, _: ErrorOutputType) {
2144 let mut elems: Vec<_> = self
2145 .iter(PathKind::All)
2148 Hash::hash(&elems, hasher);
2152 impl<T1, T2> DepTrackingHash for (T1, T2)
2153 where T1: DepTrackingHash,
2156 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2157 Hash::hash(&0, hasher);
2158 DepTrackingHash::hash(&self.0, hasher, error_format);
2159 Hash::hash(&1, hasher);
2160 DepTrackingHash::hash(&self.1, hasher, error_format);
2164 impl<T1, T2, T3> DepTrackingHash for (T1, T2, T3)
2165 where T1: DepTrackingHash,
2166 T2: DepTrackingHash,
2169 fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
2170 Hash::hash(&0, hasher);
2171 DepTrackingHash::hash(&self.0, hasher, error_format);
2172 Hash::hash(&1, hasher);
2173 DepTrackingHash::hash(&self.1, hasher, error_format);
2174 Hash::hash(&2, hasher);
2175 DepTrackingHash::hash(&self.2, hasher, error_format);
2179 // This is a stable hash because BTreeMap is a sorted container
2180 pub fn stable_hash(sub_hashes: BTreeMap<&'static str, &DepTrackingHash>,
2181 hasher: &mut DefaultHasher,
2182 error_format: ErrorOutputType) {
2183 for (key, sub_hash) in sub_hashes {
2184 // Using Hash::hash() instead of DepTrackingHash::hash() is fine for
2185 // the keys, as they are just plain strings
2186 Hash::hash(&key.len(), hasher);
2187 Hash::hash(key, hasher);
2188 sub_hash.hash(hasher, error_format);
2199 use session::config::{build_configuration, build_session_options_and_crate_config};
2200 use session::config::Lto;
2201 use session::build_session;
2202 use std::collections::{BTreeMap, BTreeSet};
2203 use std::iter::FromIterator;
2204 use std::path::PathBuf;
2205 use super::{OutputType, OutputTypes, Externs};
2206 use rustc_back::{PanicStrategy, RelroLevel};
2207 use syntax::symbol::Symbol;
2209 fn optgroups() -> getopts::Options {
2210 let mut opts = getopts::Options::new();
2211 for group in super::rustc_optgroups() {
2212 (group.apply)(&mut opts);
2217 fn mk_map<K: Ord, V>(entries: Vec<(K, V)>) -> BTreeMap<K, V> {
2218 BTreeMap::from_iter(entries.into_iter())
2221 fn mk_set<V: Ord>(entries: Vec<V>) -> BTreeSet<V> {
2222 BTreeSet::from_iter(entries.into_iter())
2225 // When the user supplies --test we should implicitly supply --cfg test
2227 fn test_switch_implies_cfg_test() {
2229 &match optgroups().parse(&["--test".to_string()]) {
2231 Err(f) => panic!("test_switch_implies_cfg_test: {}", f)
2233 let registry = errors::registry::Registry::new(&[]);
2234 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2235 let sess = build_session(sessopts, None, registry);
2236 let cfg = build_configuration(&sess, cfg);
2237 assert!(cfg.contains(&(Symbol::intern("test"), None)));
2240 // When the user supplies --test and --cfg test, don't implicitly add
2241 // another --cfg test
2243 fn test_switch_implies_cfg_test_unless_cfg_test() {
2245 &match optgroups().parse(&["--test".to_string(), "--cfg=test".to_string()]) {
2248 panic!("test_switch_implies_cfg_test_unless_cfg_test: {}", f)
2251 let registry = errors::registry::Registry::new(&[]);
2252 let (sessopts, cfg) = build_session_options_and_crate_config(matches);
2253 let sess = build_session(sessopts, None, registry);
2254 let cfg = build_configuration(&sess, cfg);
2255 let mut test_items = cfg.iter().filter(|&&(name, _)| name == "test");
2256 assert!(test_items.next().is_some());
2257 assert!(test_items.next().is_none());
2261 fn test_can_print_warnings() {
2263 let matches = optgroups().parse(&[
2264 "-Awarnings".to_string()
2266 let registry = errors::registry::Registry::new(&[]);
2267 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2268 let sess = build_session(sessopts, None, registry);
2269 assert!(!sess.diagnostic().flags.can_emit_warnings);
2273 let matches = optgroups().parse(&[
2274 "-Awarnings".to_string(),
2275 "-Dwarnings".to_string()
2277 let registry = errors::registry::Registry::new(&[]);
2278 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2279 let sess = build_session(sessopts, None, registry);
2280 assert!(sess.diagnostic().flags.can_emit_warnings);
2284 let matches = optgroups().parse(&[
2285 "-Adead_code".to_string()
2287 let registry = errors::registry::Registry::new(&[]);
2288 let (sessopts, _) = build_session_options_and_crate_config(&matches);
2289 let sess = build_session(sessopts, None, registry);
2290 assert!(sess.diagnostic().flags.can_emit_warnings);
2295 fn test_output_types_tracking_hash_different_paths() {
2296 let mut v1 = super::basic_options();
2297 let mut v2 = super::basic_options();
2298 let mut v3 = super::basic_options();
2300 v1.output_types = OutputTypes::new(&[(OutputType::Exe,
2301 Some(PathBuf::from("./some/thing")))]);
2302 v2.output_types = OutputTypes::new(&[(OutputType::Exe,
2303 Some(PathBuf::from("/some/thing")))]);
2304 v3.output_types = OutputTypes::new(&[(OutputType::Exe, None)]);
2306 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2307 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2308 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2311 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2312 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2313 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2317 fn test_output_types_tracking_hash_different_construction_order() {
2318 let mut v1 = super::basic_options();
2319 let mut v2 = super::basic_options();
2321 v1.output_types = OutputTypes::new(&[
2322 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2323 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2326 v2.output_types = OutputTypes::new(&[
2327 (OutputType::Bitcode, Some(PathBuf::from("./some/thing.bc"))),
2328 (OutputType::Exe, Some(PathBuf::from("./some/thing"))),
2331 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2334 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2338 fn test_externs_tracking_hash_different_values() {
2339 let mut v1 = super::basic_options();
2340 let mut v2 = super::basic_options();
2341 let mut v3 = super::basic_options();
2343 v1.externs = Externs::new(mk_map(vec![
2344 (String::from("a"), mk_set(vec![String::from("b"),
2345 String::from("c")])),
2346 (String::from("d"), mk_set(vec![String::from("e"),
2347 String::from("f")])),
2350 v2.externs = Externs::new(mk_map(vec![
2351 (String::from("a"), mk_set(vec![String::from("b"),
2352 String::from("c")])),
2353 (String::from("X"), mk_set(vec![String::from("e"),
2354 String::from("f")])),
2357 v3.externs = Externs::new(mk_map(vec![
2358 (String::from("a"), mk_set(vec![String::from("b"),
2359 String::from("c")])),
2360 (String::from("d"), mk_set(vec![String::from("X"),
2361 String::from("f")])),
2364 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2365 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2366 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2369 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2370 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2371 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2375 fn test_externs_tracking_hash_different_construction_order() {
2376 let mut v1 = super::basic_options();
2377 let mut v2 = super::basic_options();
2378 let mut v3 = super::basic_options();
2380 v1.externs = Externs::new(mk_map(vec![
2381 (String::from("a"), mk_set(vec![String::from("b"),
2382 String::from("c")])),
2383 (String::from("d"), mk_set(vec![String::from("e"),
2384 String::from("f")])),
2387 v2.externs = Externs::new(mk_map(vec![
2388 (String::from("d"), mk_set(vec![String::from("e"),
2389 String::from("f")])),
2390 (String::from("a"), mk_set(vec![String::from("b"),
2391 String::from("c")])),
2394 v3.externs = Externs::new(mk_map(vec![
2395 (String::from("a"), mk_set(vec![String::from("b"),
2396 String::from("c")])),
2397 (String::from("d"), mk_set(vec![String::from("f"),
2398 String::from("e")])),
2401 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2402 assert_eq!(v1.dep_tracking_hash(), v3.dep_tracking_hash());
2403 assert_eq!(v2.dep_tracking_hash(), v3.dep_tracking_hash());
2406 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2407 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2408 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2412 fn test_lints_tracking_hash_different_values() {
2413 let mut v1 = super::basic_options();
2414 let mut v2 = super::basic_options();
2415 let mut v3 = super::basic_options();
2417 v1.lint_opts = vec![(String::from("a"), lint::Allow),
2418 (String::from("b"), lint::Warn),
2419 (String::from("c"), lint::Deny),
2420 (String::from("d"), lint::Forbid)];
2422 v2.lint_opts = vec![(String::from("a"), lint::Allow),
2423 (String::from("b"), lint::Warn),
2424 (String::from("X"), lint::Deny),
2425 (String::from("d"), lint::Forbid)];
2427 v3.lint_opts = vec![(String::from("a"), lint::Allow),
2428 (String::from("b"), lint::Warn),
2429 (String::from("c"), lint::Forbid),
2430 (String::from("d"), lint::Deny)];
2432 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2433 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2434 assert!(v2.dep_tracking_hash() != v3.dep_tracking_hash());
2437 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2438 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2439 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2443 fn test_lints_tracking_hash_different_construction_order() {
2444 let mut v1 = super::basic_options();
2445 let mut v2 = super::basic_options();
2447 v1.lint_opts = vec![(String::from("a"), lint::Allow),
2448 (String::from("b"), lint::Warn),
2449 (String::from("c"), lint::Deny),
2450 (String::from("d"), lint::Forbid)];
2452 v2.lint_opts = vec![(String::from("a"), lint::Allow),
2453 (String::from("c"), lint::Deny),
2454 (String::from("b"), lint::Warn),
2455 (String::from("d"), lint::Forbid)];
2457 assert_eq!(v1.dep_tracking_hash(), v2.dep_tracking_hash());
2460 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2461 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2465 fn test_search_paths_tracking_hash_different_values() {
2466 let mut v1 = super::basic_options();
2467 let mut v2 = super::basic_options();
2468 let mut v3 = super::basic_options();
2469 let mut v4 = super::basic_options();
2470 let mut v5 = super::basic_options();
2473 v1.search_paths.add_path("native=abc", super::ErrorOutputType::Json(false));
2474 v1.search_paths.add_path("crate=def", super::ErrorOutputType::Json(false));
2475 v1.search_paths.add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2476 v1.search_paths.add_path("framework=jkl", super::ErrorOutputType::Json(false));
2477 v1.search_paths.add_path("all=mno", super::ErrorOutputType::Json(false));
2480 v2.search_paths.add_path("native=XXX", super::ErrorOutputType::Json(false));
2481 v2.search_paths.add_path("crate=def", super::ErrorOutputType::Json(false));
2482 v2.search_paths.add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2483 v2.search_paths.add_path("framework=jkl", super::ErrorOutputType::Json(false));
2484 v2.search_paths.add_path("all=mno", super::ErrorOutputType::Json(false));
2487 v2.search_paths.add_path("native=abc", super::ErrorOutputType::Json(false));
2488 v2.search_paths.add_path("crate=XXX", super::ErrorOutputType::Json(false));
2489 v2.search_paths.add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2490 v2.search_paths.add_path("framework=jkl", super::ErrorOutputType::Json(false));
2491 v2.search_paths.add_path("all=mno", super::ErrorOutputType::Json(false));
2493 // Dependency changed
2494 v3.search_paths.add_path("native=abc", super::ErrorOutputType::Json(false));
2495 v3.search_paths.add_path("crate=def", super::ErrorOutputType::Json(false));
2496 v3.search_paths.add_path("dependency=XXX", super::ErrorOutputType::Json(false));
2497 v3.search_paths.add_path("framework=jkl", super::ErrorOutputType::Json(false));
2498 v3.search_paths.add_path("all=mno", super::ErrorOutputType::Json(false));
2500 // Framework changed
2501 v4.search_paths.add_path("native=abc", super::ErrorOutputType::Json(false));
2502 v4.search_paths.add_path("crate=def", super::ErrorOutputType::Json(false));
2503 v4.search_paths.add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2504 v4.search_paths.add_path("framework=XXX", super::ErrorOutputType::Json(false));
2505 v4.search_paths.add_path("all=mno", super::ErrorOutputType::Json(false));
2508 v5.search_paths.add_path("native=abc", super::ErrorOutputType::Json(false));
2509 v5.search_paths.add_path("crate=def", super::ErrorOutputType::Json(false));
2510 v5.search_paths.add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2511 v5.search_paths.add_path("framework=jkl", super::ErrorOutputType::Json(false));
2512 v5.search_paths.add_path("all=XXX", super::ErrorOutputType::Json(false));
2514 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2515 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2516 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
2517 assert!(v1.dep_tracking_hash() != v5.dep_tracking_hash());
2520 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2521 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2522 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2523 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2524 assert_eq!(v5.dep_tracking_hash(), v5.clone().dep_tracking_hash());
2528 fn test_search_paths_tracking_hash_different_order() {
2529 let mut v1 = super::basic_options();
2530 let mut v2 = super::basic_options();
2531 let mut v3 = super::basic_options();
2532 let mut v4 = super::basic_options();
2535 v1.search_paths.add_path("native=abc", super::ErrorOutputType::Json(false));
2536 v1.search_paths.add_path("crate=def", super::ErrorOutputType::Json(false));
2537 v1.search_paths.add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2538 v1.search_paths.add_path("framework=jkl", super::ErrorOutputType::Json(false));
2539 v1.search_paths.add_path("all=mno", super::ErrorOutputType::Json(false));
2541 v2.search_paths.add_path("native=abc", super::ErrorOutputType::Json(false));
2542 v2.search_paths.add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2543 v2.search_paths.add_path("crate=def", super::ErrorOutputType::Json(false));
2544 v2.search_paths.add_path("framework=jkl", super::ErrorOutputType::Json(false));
2545 v2.search_paths.add_path("all=mno", super::ErrorOutputType::Json(false));
2547 v3.search_paths.add_path("crate=def", super::ErrorOutputType::Json(false));
2548 v3.search_paths.add_path("framework=jkl", super::ErrorOutputType::Json(false));
2549 v3.search_paths.add_path("native=abc", super::ErrorOutputType::Json(false));
2550 v3.search_paths.add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2551 v3.search_paths.add_path("all=mno", super::ErrorOutputType::Json(false));
2553 v4.search_paths.add_path("all=mno", super::ErrorOutputType::Json(false));
2554 v4.search_paths.add_path("native=abc", super::ErrorOutputType::Json(false));
2555 v4.search_paths.add_path("crate=def", super::ErrorOutputType::Json(false));
2556 v4.search_paths.add_path("dependency=ghi", super::ErrorOutputType::Json(false));
2557 v4.search_paths.add_path("framework=jkl", super::ErrorOutputType::Json(false));
2559 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2560 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2561 assert!(v1.dep_tracking_hash() == v4.dep_tracking_hash());
2564 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2565 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2566 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2567 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2571 fn test_native_libs_tracking_hash_different_values() {
2572 let mut v1 = super::basic_options();
2573 let mut v2 = super::basic_options();
2574 let mut v3 = super::basic_options();
2575 let mut v4 = super::basic_options();
2578 v1.libs = vec![(String::from("a"), None, Some(cstore::NativeStatic)),
2579 (String::from("b"), None, Some(cstore::NativeFramework)),
2580 (String::from("c"), None, Some(cstore::NativeUnknown))];
2583 v2.libs = vec![(String::from("a"), None, Some(cstore::NativeStatic)),
2584 (String::from("X"), None, Some(cstore::NativeFramework)),
2585 (String::from("c"), None, Some(cstore::NativeUnknown))];
2588 v3.libs = vec![(String::from("a"), None, Some(cstore::NativeStatic)),
2589 (String::from("b"), None, Some(cstore::NativeStatic)),
2590 (String::from("c"), None, Some(cstore::NativeUnknown))];
2593 v4.libs = vec![(String::from("a"), None, Some(cstore::NativeStatic)),
2594 (String::from("b"), Some(String::from("X")), Some(cstore::NativeFramework)),
2595 (String::from("c"), None, Some(cstore::NativeUnknown))];
2597 assert!(v1.dep_tracking_hash() != v2.dep_tracking_hash());
2598 assert!(v1.dep_tracking_hash() != v3.dep_tracking_hash());
2599 assert!(v1.dep_tracking_hash() != v4.dep_tracking_hash());
2602 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2603 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2604 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2605 assert_eq!(v4.dep_tracking_hash(), v4.clone().dep_tracking_hash());
2609 fn test_native_libs_tracking_hash_different_order() {
2610 let mut v1 = super::basic_options();
2611 let mut v2 = super::basic_options();
2612 let mut v3 = super::basic_options();
2615 v1.libs = vec![(String::from("a"), None, Some(cstore::NativeStatic)),
2616 (String::from("b"), None, Some(cstore::NativeFramework)),
2617 (String::from("c"), None, Some(cstore::NativeUnknown))];
2619 v2.libs = vec![(String::from("b"), None, Some(cstore::NativeFramework)),
2620 (String::from("a"), None, Some(cstore::NativeStatic)),
2621 (String::from("c"), None, Some(cstore::NativeUnknown))];
2623 v3.libs = vec![(String::from("c"), None, Some(cstore::NativeUnknown)),
2624 (String::from("a"), None, Some(cstore::NativeStatic)),
2625 (String::from("b"), None, Some(cstore::NativeFramework))];
2627 assert!(v1.dep_tracking_hash() == v2.dep_tracking_hash());
2628 assert!(v1.dep_tracking_hash() == v3.dep_tracking_hash());
2629 assert!(v2.dep_tracking_hash() == v3.dep_tracking_hash());
2632 assert_eq!(v1.dep_tracking_hash(), v1.clone().dep_tracking_hash());
2633 assert_eq!(v2.dep_tracking_hash(), v2.clone().dep_tracking_hash());
2634 assert_eq!(v3.dep_tracking_hash(), v3.clone().dep_tracking_hash());
2638 fn test_codegen_options_tracking_hash() {
2639 let reference = super::basic_options();
2640 let mut opts = super::basic_options();
2642 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
2643 opts.cg.ar = Some(String::from("abc"));
2644 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2646 opts.cg.linker = Some(PathBuf::from("linker"));
2647 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2649 opts.cg.link_args = Some(vec![String::from("abc"), String::from("def")]);
2650 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2652 opts.cg.link_dead_code = true;
2653 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2655 opts.cg.rpath = true;
2656 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2658 opts.cg.extra_filename = String::from("extra-filename");
2659 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2661 opts.cg.codegen_units = Some(42);
2662 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2664 opts.cg.remark = super::SomePasses(vec![String::from("pass1"),
2665 String::from("pass2")]);
2666 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2668 opts.cg.save_temps = true;
2669 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2671 opts.cg.incremental = Some(String::from("abc"));
2672 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2675 // Make sure changing a [TRACKED] option changes the hash
2676 opts = reference.clone();
2677 opts.cg.lto = Lto::Fat;
2678 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2680 opts = reference.clone();
2681 opts.cg.target_cpu = Some(String::from("abc"));
2682 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2684 opts = reference.clone();
2685 opts.cg.target_feature = String::from("all the features, all of them");
2686 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2688 opts = reference.clone();
2689 opts.cg.passes = vec![String::from("1"), String::from("2")];
2690 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2692 opts = reference.clone();
2693 opts.cg.llvm_args = vec![String::from("1"), String::from("2")];
2694 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2696 opts = reference.clone();
2697 opts.cg.overflow_checks = Some(true);
2698 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2700 opts = reference.clone();
2701 opts.cg.no_prepopulate_passes = true;
2702 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2704 opts = reference.clone();
2705 opts.cg.no_vectorize_loops = true;
2706 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2708 opts = reference.clone();
2709 opts.cg.no_vectorize_slp = true;
2710 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2712 opts = reference.clone();
2713 opts.cg.soft_float = true;
2714 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2716 opts = reference.clone();
2717 opts.cg.prefer_dynamic = true;
2718 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2720 opts = reference.clone();
2721 opts.cg.no_integrated_as = true;
2722 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2724 opts = reference.clone();
2725 opts.cg.no_redzone = Some(true);
2726 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2728 opts = reference.clone();
2729 opts.cg.relocation_model = Some(String::from("relocation model"));
2730 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2732 opts = reference.clone();
2733 opts.cg.code_model = Some(String::from("code model"));
2734 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2736 opts = reference.clone();
2737 opts.debugging_opts.tls_model = Some(String::from("tls model"));
2738 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2740 opts = reference.clone();
2741 opts.cg.metadata = vec![String::from("A"), String::from("B")];
2742 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2744 opts = reference.clone();
2745 opts.cg.debuginfo = Some(0xdeadbeef);
2746 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2748 opts = reference.clone();
2749 opts.cg.debuginfo = Some(0xba5eba11);
2750 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2752 opts = reference.clone();
2753 opts.cg.debug_assertions = Some(true);
2754 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2756 opts = reference.clone();
2757 opts.cg.inline_threshold = Some(0xf007ba11);
2758 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2760 opts = reference.clone();
2761 opts.cg.panic = Some(PanicStrategy::Abort);
2762 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2766 fn test_debugging_options_tracking_hash() {
2767 let reference = super::basic_options();
2768 let mut opts = super::basic_options();
2770 // Make sure the changing an [UNTRACKED] option leaves the hash unchanged
2771 opts.debugging_opts.verbose = true;
2772 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2773 opts.debugging_opts.time_passes = true;
2774 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2775 opts.debugging_opts.count_llvm_insns = true;
2776 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2777 opts.debugging_opts.time_llvm_passes = true;
2778 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2779 opts.debugging_opts.input_stats = true;
2780 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2781 opts.debugging_opts.trans_stats = true;
2782 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2783 opts.debugging_opts.borrowck_stats = true;
2784 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2785 opts.debugging_opts.meta_stats = true;
2786 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2787 opts.debugging_opts.print_link_args = true;
2788 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2789 opts.debugging_opts.print_llvm_passes = true;
2790 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2791 opts.debugging_opts.ast_json = true;
2792 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2793 opts.debugging_opts.ast_json_noexpand = true;
2794 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2795 opts.debugging_opts.ls = true;
2796 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2797 opts.debugging_opts.save_analysis = true;
2798 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2799 opts.debugging_opts.flowgraph_print_loans = true;
2800 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2801 opts.debugging_opts.flowgraph_print_moves = true;
2802 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2803 opts.debugging_opts.flowgraph_print_assigns = true;
2804 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2805 opts.debugging_opts.flowgraph_print_all = true;
2806 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2807 opts.debugging_opts.print_region_graph = true;
2808 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2809 opts.debugging_opts.parse_only = true;
2810 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2811 opts.debugging_opts.incremental = Some(String::from("abc"));
2812 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2813 opts.debugging_opts.dump_dep_graph = true;
2814 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2815 opts.debugging_opts.query_dep_graph = true;
2816 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2817 opts.debugging_opts.no_analysis = true;
2818 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2819 opts.debugging_opts.unstable_options = true;
2820 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2821 opts.debugging_opts.trace_macros = true;
2822 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2823 opts.debugging_opts.keep_hygiene_data = true;
2824 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2825 opts.debugging_opts.keep_ast = true;
2826 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2827 opts.debugging_opts.print_trans_items = Some(String::from("abc"));
2828 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2829 opts.debugging_opts.dump_mir = Some(String::from("abc"));
2830 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2831 opts.debugging_opts.dump_mir_dir = String::from("abc");
2832 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2833 opts.debugging_opts.dump_mir_graphviz = true;
2834 assert_eq!(reference.dep_tracking_hash(), opts.dep_tracking_hash());
2836 // Make sure changing a [TRACKED] option changes the hash
2837 opts = reference.clone();
2838 opts.debugging_opts.asm_comments = true;
2839 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2841 opts = reference.clone();
2842 opts.debugging_opts.no_verify = true;
2843 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2845 opts = reference.clone();
2846 opts.debugging_opts.no_landing_pads = true;
2847 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2849 opts = reference.clone();
2850 opts.debugging_opts.fewer_names = true;
2851 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2853 opts = reference.clone();
2854 opts.debugging_opts.no_trans = true;
2855 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2857 opts = reference.clone();
2858 opts.debugging_opts.treat_err_as_bug = true;
2859 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2861 opts = reference.clone();
2862 opts.debugging_opts.continue_parse_after_error = true;
2863 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2865 opts = reference.clone();
2866 opts.debugging_opts.extra_plugins = vec![String::from("plugin1"), String::from("plugin2")];
2867 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2869 opts = reference.clone();
2870 opts.debugging_opts.force_overflow_checks = Some(true);
2871 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2873 opts = reference.clone();
2874 opts.debugging_opts.enable_nonzeroing_move_hints = true;
2875 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2877 opts = reference.clone();
2878 opts.debugging_opts.show_span = Some(String::from("abc"));
2879 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2881 opts = reference.clone();
2882 opts.debugging_opts.mir_opt_level = 3;
2883 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());
2885 opts = reference.clone();
2886 opts.debugging_opts.relro_level = Some(RelroLevel::Full);
2887 assert!(reference.dep_tracking_hash() != opts.dep_tracking_hash());