use crate::config::*;
use crate::early_error;
use crate::lint;
use crate::search_paths::SearchPath;
use crate::utils::NativeLibraryKind;
use rustc_target::spec::TargetTriple;
use rustc_target::spec::{LinkerFlavor, MergeFunctions, PanicStrategy};
use rustc_target::spec::{RelocModel, RelroLevel, TlsModel};
use rustc_feature::UnstableFeatures;
use rustc_span::edition::Edition;
use rustc_span::SourceFileHashAlgorithm;
use std::collections::BTreeMap;
use std::collections::hash_map::DefaultHasher;
use std::hash::Hasher;
use std::path::PathBuf;
use std::str;
macro_rules! hash_option {
($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [UNTRACKED]) => {{}};
($opt_name:ident, $opt_expr:expr, $sub_hashes:expr, [TRACKED]) => {{
if $sub_hashes
.insert(stringify!($opt_name), $opt_expr as &dyn dep_tracking::DepTrackingHash)
.is_some()
{
panic!("duplicate key in CLI DepTrackingHash: {}", stringify!($opt_name))
}
}};
}
macro_rules! top_level_options {
(pub struct Options { $(
$opt:ident : $t:ty [$dep_tracking_marker:ident $($warn_val:expr, $warn_text:expr)*],
)* } ) => (
#[derive(Clone)]
pub struct Options {
$(pub $opt: $t),*
}
impl Options {
pub fn dep_tracking_hash(&self) -> u64 {
let mut sub_hashes = BTreeMap::new();
$({
hash_option!($opt,
&self.$opt,
&mut sub_hashes,
[$dep_tracking_marker $($warn_val,
$warn_text,
self.error_format)*]);
})*
let mut hasher = DefaultHasher::new();
dep_tracking::stable_hash(sub_hashes,
&mut hasher,
self.error_format);
hasher.finish()
}
}
);
}
top_level_options!(
pub struct Options {
crate_types: Vec<CrateType> [TRACKED],
optimize: OptLevel [TRACKED],
debug_assertions: bool [TRACKED],
debuginfo: DebugInfo [TRACKED],
lint_opts: Vec<(String, lint::Level)> [TRACKED],
lint_cap: Option<lint::Level> [TRACKED],
describe_lints: bool [UNTRACKED],
output_types: OutputTypes [TRACKED],
search_paths: Vec<SearchPath> [UNTRACKED],
libs: Vec<(String, Option<String>, Option<NativeLibraryKind>)> [TRACKED],
maybe_sysroot: Option<PathBuf> [UNTRACKED],
target_triple: TargetTriple [TRACKED],
test: bool [TRACKED],
error_format: ErrorOutputType [UNTRACKED],
incremental: Option<PathBuf> [UNTRACKED],
debugging_opts: DebuggingOptions [TRACKED],
prints: Vec<PrintRequest> [UNTRACKED],
borrowck_mode: BorrowckMode [UNTRACKED],
cg: CodegenOptions [TRACKED],
externs: Externs [UNTRACKED],
crate_name: Option<String> [TRACKED],
alt_std_name: Option<String> [TRACKED],
unstable_features: UnstableFeatures [TRACKED],
actually_rustdoc: bool [TRACKED],
cli_forced_codegen_units: Option<usize> [UNTRACKED],
cli_forced_thinlto_off: bool [UNTRACKED],
remap_path_prefix: Vec<(PathBuf, PathBuf)> [UNTRACKED],
edition: Edition [TRACKED],
json_artifact_notifications: bool [TRACKED],
pretty: Option<PpMode> [UNTRACKED],
}
);
macro_rules! options {
($struct_name:ident, $setter_name:ident, $defaultfn:ident,
$buildfn:ident, $prefix:expr, $outputname:expr,
$stat:ident, $mod_desc:ident, $mod_set:ident,
$($opt:ident : $t:ty = (
$init:expr,
$parse:ident,
[$dep_tracking_marker:ident $(($dep_warn_val:expr, $dep_warn_text:expr))*],
$desc:expr)
),* ,) =>
(
#[derive(Clone)]
pub struct $struct_name { $(pub $opt: $t),* }
pub fn $defaultfn() -> $struct_name {
$struct_name { $($opt: $init),* }
}
pub fn $buildfn(matches: &getopts::Matches, error_format: ErrorOutputType) -> $struct_name
{
let mut op = $defaultfn();
for option in matches.opt_strs($prefix) {
let mut iter = option.splitn(2, '=');
let key = iter.next().unwrap();
let value = iter.next();
let option_to_lookup = key.replace("-", "_");
let mut found = false;
for &(candidate, setter, type_desc, _) in $stat {
if option_to_lookup != candidate { continue }
if !setter(&mut op, value) {
match value {
None => {
early_error(error_format, &format!("{0} option `{1}` requires \
{2} ({3} {1}=<value>)",
$outputname, key,
type_desc, $prefix))
}
Some(value) => {
early_error(error_format, &format!("incorrect value `{}` for {} \
option `{}` - {} was expected",
value, $outputname,
key, type_desc))
}
}
}
found = true;
break;
}
if !found {
early_error(error_format, &format!("unknown {} option: `{}`",
$outputname, key));
}
}
return op;
}
impl dep_tracking::DepTrackingHash for $struct_name {
fn hash(&self, hasher: &mut DefaultHasher, error_format: ErrorOutputType) {
let mut sub_hashes = BTreeMap::new();
$({
hash_option!($opt,
&self.$opt,
&mut sub_hashes,
[$dep_tracking_marker $($dep_warn_val,
$dep_warn_text,
error_format)*]);
})*
dep_tracking::stable_hash(sub_hashes, hasher, error_format);
}
}
pub type $setter_name = fn(&mut $struct_name, v: Option<&str>) -> bool;
pub const $stat: &[(&str, $setter_name, &str, &str)] =
&[ $( (stringify!($opt), $mod_set::$opt, $mod_desc::$parse, $desc) ),* ];
#[allow(non_upper_case_globals, dead_code)]
mod $mod_desc {
pub const parse_no_flag: &str = "no value";
pub const parse_bool: &str = "one of: `y`, `yes`, `on`, `n`, `no`, or `off`";
pub const parse_opt_bool: &str = parse_bool;
pub const parse_string: &str = "a string";
pub const parse_opt_string: &str = parse_string;
pub const parse_string_push: &str = parse_string;
pub const parse_opt_pathbuf: &str = "a path";
pub const parse_pathbuf_push: &str = parse_opt_pathbuf;
pub const parse_list: &str = "a space-separated list of strings";
pub const parse_opt_list: &str = parse_list;
pub const parse_opt_comma_list: &str = "a comma-separated list of strings";
pub const parse_uint: &str = "a number";
pub const parse_opt_uint: &str = parse_uint;
pub const parse_threads: &str = parse_uint;
pub const parse_passes: &str = "a space-separated list of passes, or `all`";
pub const parse_panic_strategy: &str = "either `unwind` or `abort`";
pub const parse_relro_level: &str = "one of: `full`, `partial`, or `off`";
pub const parse_sanitizer: &str = "one of: `address`, `leak`, `memory` or `thread`";
pub const parse_sanitizer_list: &str = "comma separated list of sanitizers";
pub const parse_sanitizer_memory_track_origins: &str = "0, 1, or 2";
pub const parse_cfguard: &str = "either `disabled`, `nochecks`, or `checks`";
pub const parse_strip: &str = "either `none`, `debuginfo`, or `symbols`";
pub const parse_linker_flavor: &str = ::rustc_target::spec::LinkerFlavor::one_of();
pub const parse_optimization_fuel: &str = "crate=integer";
pub const parse_unpretty: &str = "`string` or `string=string`";
pub const parse_treat_err_as_bug: &str = "either no value or a number bigger than 0";
pub const parse_lto: &str =
"either a boolean (`yes`, `no`, `on`, `off`, etc), `thin`, `fat`, or omitted";
pub const parse_linker_plugin_lto: &str =
"either a boolean (`yes`, `no`, `on`, `off`, etc), or the path to the linker plugin";
pub const parse_switch_with_opt_path: &str =
"an optional path to the profiling data output directory";
pub const parse_merge_functions: &str = "one of: `disabled`, `trampolines`, or `aliases`";
pub const parse_symbol_mangling_version: &str = "either `legacy` or `v0` (RFC 2603)";
pub const parse_src_file_hash: &str = "either `md5` or `sha1`";
pub const parse_relocation_model: &str =
"one of supported relocation models (`rustc --print relocation-models`)";
pub const parse_tls_model: &str =
"one of supported TLS models (`rustc --print tls-models`)";
}
#[allow(dead_code)]
mod $mod_set {
use super::*;
use std::str::FromStr;
macro_rules! redirect_field {
($cg:ident.link_arg) => { $cg.link_args };
($cg:ident.pre_link_arg) => { $cg.pre_link_args };
($cg:ident.$field:ident) => { $cg.$field };
}
$(
pub fn $opt(cg: &mut $struct_name, v: Option<&str>) -> bool {
$parse(&mut redirect_field!(cg.$opt), v)
}
)*
fn parse_no_flag(slot: &mut bool, v: Option<&str>) -> bool {
match v {
None => { *slot = true; true }
Some(_) => false,
}
}
fn parse_bool(slot: &mut bool, v: Option<&str>) -> bool {
match v {
Some("y") | Some("yes") | Some("on") | None => { *slot = true; true }
Some("n") | Some("no") | Some("off") => { *slot = false; true }
_ => false,
}
}
fn parse_opt_bool(slot: &mut Option<bool>, v: Option<&str>) -> bool {
match v {
Some("y") | Some("yes") | Some("on") | None => { *slot = Some(true); true }
Some("n") | Some("no") | Some("off") => { *slot = Some(false); true }
_ => false,
}
}
fn parse_string(slot: &mut String, v: Option<&str>) -> bool {
match v {
Some(s) => { *slot = s.to_string(); true },
None => false,
}
}
fn parse_opt_string(slot: &mut Option<String>, v: Option<&str>) -> bool {
match v {
Some(s) => { *slot = Some(s.to_string()); true },
None => false,
}
}
fn parse_opt_pathbuf(slot: &mut Option<PathBuf>, v: Option<&str>) -> bool {
match v {
Some(s) => { *slot = Some(PathBuf::from(s)); true },
None => false,
}
}
fn parse_string_push(slot: &mut Vec<String>, v: Option<&str>) -> bool {
match v {
Some(s) => { slot.push(s.to_string()); true },
None => false,
}
}
fn parse_pathbuf_push(slot: &mut Vec<PathBuf>, v: Option<&str>) -> bool {
match v {
Some(s) => { slot.push(PathBuf::from(s)); true },
None => false,
}
}
fn parse_list(slot: &mut Vec<String>, v: Option<&str>)
-> bool {
match v {
Some(s) => {
slot.extend(s.split_whitespace().map(|s| s.to_string()));
true
},
None => false,
}
}
fn parse_opt_list(slot: &mut Option<Vec<String>>, v: Option<&str>)
-> bool {
match v {
Some(s) => {
let v = s.split_whitespace().map(|s| s.to_string()).collect();
*slot = Some(v);
true
},
None => false,
}
}
fn parse_opt_comma_list(slot: &mut Option<Vec<String>>, v: Option<&str>)
-> bool {
match v {
Some(s) => {
let v = s.split(',').map(|s| s.to_string()).collect();
*slot = Some(v);
true
},
None => false,
}
}
fn parse_threads(slot: &mut usize, v: Option<&str>) -> bool {
match v.and_then(|s| s.parse().ok()) {
Some(0) => { *slot = ::num_cpus::get(); true },
Some(i) => { *slot = i; true },
None => false
}
}
fn parse_uint(slot: &mut usize, v: Option<&str>) -> bool {
match v.and_then(|s| s.parse().ok()) {
Some(i) => { *slot = i; true },
None => false
}
}
fn parse_opt_uint(slot: &mut Option<usize>, v: Option<&str>) -> bool {
match v {
Some(s) => { *slot = s.parse().ok(); slot.is_some() }
None => false
}
}
fn parse_passes(slot: &mut Passes, v: Option<&str>) -> bool {
match v {
Some("all") => {
*slot = Passes::All;
true
}
v => {
let mut passes = vec![];
if parse_list(&mut passes, v) {
*slot = Passes::Some(passes);
true
} else {
false
}
}
}
}
fn parse_panic_strategy(slot: &mut Option<PanicStrategy>, v: Option<&str>) -> bool {
match v {
Some("unwind") => *slot = Some(PanicStrategy::Unwind),
Some("abort") => *slot = Some(PanicStrategy::Abort),
_ => return false
}
true
}
fn parse_relro_level(slot: &mut Option<RelroLevel>, v: Option<&str>) -> bool {
match v {
Some(s) => {
match s.parse::<RelroLevel>() {
Ok(level) => *slot = Some(level),
_ => return false
}
},
_ => return false
}
true
}
fn parse_sanitizer(slot: &mut Option<Sanitizer>, v: Option<&str>) -> bool {
if let Some(Ok(s)) = v.map(str::parse) {
*slot = Some(s);
true
} else {
false
}
}
fn parse_sanitizer_list(slot: &mut Vec<Sanitizer>, v: Option<&str>) -> bool {
if let Some(v) = v {
for s in v.split(',').map(str::parse) {
if let Ok(s) = s {
if !slot.contains(&s) {
slot.push(s);
}
} else {
return false;
}
}
true
} else {
false
}
}
fn parse_sanitizer_memory_track_origins(slot: &mut usize, v: Option<&str>) -> bool {
match v {
Some("2") | None => { *slot = 2; true }
Some("1") => { *slot = 1; true }
Some("0") => { *slot = 0; true }
Some(_) => false,
}
}
fn parse_strip(slot: &mut Strip, v: Option<&str>) -> bool {
match v {
Some("none") => *slot = Strip::None,
Some("debuginfo") => *slot = Strip::Debuginfo,
Some("symbols") => *slot = Strip::Symbols,
_ => return false,
}
true
}
fn parse_cfguard(slot: &mut CFGuard, v: Option<&str>) -> bool {
match v {
Some("disabled") => *slot = CFGuard::Disabled,
Some("nochecks") => *slot = CFGuard::NoChecks,
Some("checks") => *slot = CFGuard::Checks,
_ => return false,
}
true
}
fn parse_linker_flavor(slote: &mut Option<LinkerFlavor>, v: Option<&str>) -> bool {
match v.and_then(LinkerFlavor::from_str) {
Some(lf) => *slote = Some(lf),
_ => return false,
}
true
}
fn parse_optimization_fuel(slot: &mut Option<(String, u64)>, v: Option<&str>) -> bool {
match v {
None => false,
Some(s) => {
let parts = s.split('=').collect::<Vec<_>>();
if parts.len() != 2 { return false; }
let crate_name = parts[0].to_string();
let fuel = parts[1].parse::<u64>();
if fuel.is_err() { return false; }
*slot = Some((crate_name, fuel.unwrap()));
true
}
}
}
fn parse_unpretty(slot: &mut Option<String>, v: Option<&str>) -> bool {
match v {
None => false,
Some(s) if s.split('=').count() <= 2 => {
*slot = Some(s.to_string());
true
}
_ => false,
}
}
fn parse_treat_err_as_bug(slot: &mut Option<usize>, v: Option<&str>) -> bool {
match v {
Some(s) => { *slot = s.parse().ok().filter(|&x| x != 0); slot.unwrap_or(0) != 0 }
None => { *slot = Some(1); true }
}
}
fn parse_lto(slot: &mut LtoCli, v: Option<&str>) -> bool {
if v.is_some() {
let mut bool_arg = None;
if parse_opt_bool(&mut bool_arg, v) {
*slot = if bool_arg.unwrap() {
LtoCli::Yes
} else {
LtoCli::No
};
return true
}
}
*slot = match v {
None => LtoCli::NoParam,
Some("thin") => LtoCli::Thin,
Some("fat") => LtoCli::Fat,
Some(_) => return false,
};
true
}
fn parse_linker_plugin_lto(slot: &mut LinkerPluginLto, v: Option<&str>) -> bool {
if v.is_some() {
let mut bool_arg = None;
if parse_opt_bool(&mut bool_arg, v) {
*slot = if bool_arg.unwrap() {
LinkerPluginLto::LinkerPluginAuto
} else {
LinkerPluginLto::Disabled
};
return true
}
}
*slot = match v {
None => LinkerPluginLto::LinkerPluginAuto,
Some(path) => LinkerPluginLto::LinkerPlugin(PathBuf::from(path)),
};
true
}
fn parse_switch_with_opt_path(slot: &mut SwitchWithOptPath, v: Option<&str>) -> bool {
*slot = match v {
None => SwitchWithOptPath::Enabled(None),
Some(path) => SwitchWithOptPath::Enabled(Some(PathBuf::from(path))),
};
true
}
fn parse_merge_functions(slot: &mut Option<MergeFunctions>, v: Option<&str>) -> bool {
match v.and_then(|s| MergeFunctions::from_str(s).ok()) {
Some(mergefunc) => *slot = Some(mergefunc),
_ => return false,
}
true
}
fn parse_relocation_model(slot: &mut Option<RelocModel>, v: Option<&str>) -> bool {
match v.and_then(|s| RelocModel::from_str(s).ok()) {
Some(relocation_model) => *slot = Some(relocation_model),
None if v == Some("default") => *slot = None,
_ => return false,
}
true
}
fn parse_tls_model(slot: &mut Option<TlsModel>, v: Option<&str>) -> bool {
match v.and_then(|s| TlsModel::from_str(s).ok()) {
Some(tls_model) => *slot = Some(tls_model),
_ => return false,
}
true
}
fn parse_symbol_mangling_version(
slot: &mut SymbolManglingVersion,
v: Option<&str>,
) -> bool {
*slot = match v {
Some("legacy") => SymbolManglingVersion::Legacy,
Some("v0") => SymbolManglingVersion::V0,
_ => return false,
};
true
}
fn parse_src_file_hash(slot: &mut Option<SourceFileHashAlgorithm>, v: Option<&str>) -> bool {
match v.and_then(|s| SourceFileHashAlgorithm::from_str(s).ok()) {
Some(hash_kind) => *slot = Some(hash_kind),
_ => return false,
}
true
}
}
) }
options! {CodegenOptions, CodegenSetter, basic_codegen_options,
build_codegen_options, "C", "codegen",
CG_OPTIONS, cg_type_desc, cgsetters,
ar: String = (String::new(), parse_string, [UNTRACKED],
"this option is deprecated and does nothing"),
code_model: Option<String> = (None, parse_opt_string, [TRACKED],
"choose the code model to use (`rustc --print code-models` for details)"),
codegen_units: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
"divide crate into N units to optimize in parallel"),
debug_assertions: Option<bool> = (None, parse_opt_bool, [TRACKED],
"explicitly enable the `cfg(debug_assertions)` directive"),
debuginfo: usize = (0, parse_uint, [TRACKED],
"debug info emission level (0 = no debug info, 1 = line tables only, \
2 = full debug info with variable and type information; default: 0)"),
default_linker_libraries: bool = (false, parse_bool, [UNTRACKED],
"allow the linker to link its default libraries (default: no)"),
embed_bitcode: bool = (true, parse_bool, [TRACKED],
"emit bitcode in rlibs (default: yes)"),
extra_filename: String = (String::new(), parse_string, [UNTRACKED],
"extra data to put in each output filename"),
force_frame_pointers: Option<bool> = (None, parse_opt_bool, [TRACKED],
"force use of the frame pointers"),
force_unwind_tables: Option<bool> = (None, parse_opt_bool, [TRACKED],
"force use of unwind tables"),
incremental: Option<String> = (None, parse_opt_string, [UNTRACKED],
"enable incremental compilation"),
inline_threshold: Option<usize> = (None, parse_opt_uint, [TRACKED],
"set the threshold for inlining a function"),
link_arg: () = ((), parse_string_push, [UNTRACKED],
"a single extra argument to append to the linker invocation (can be used several times)"),
link_args: Vec<String> = (Vec::new(), parse_list, [UNTRACKED],
"extra arguments to append to the linker invocation (space separated)"),
link_dead_code: bool = (false, parse_bool, [UNTRACKED],
"keep dead code at link time (useful for code coverage) (default: no)"),
linker: Option<PathBuf> = (None, parse_opt_pathbuf, [UNTRACKED],
"system linker to link outputs with"),
linker_flavor: Option<LinkerFlavor> = (None, parse_linker_flavor, [UNTRACKED],
"linker flavor"),
linker_plugin_lto: LinkerPluginLto = (LinkerPluginLto::Disabled,
parse_linker_plugin_lto, [TRACKED],
"generate build artifacts that are compatible with linker-based LTO"),
llvm_args: Vec<String> = (Vec::new(), parse_list, [TRACKED],
"a list of arguments to pass to LLVM (space separated)"),
lto: LtoCli = (LtoCli::Unspecified, parse_lto, [TRACKED],
"perform LLVM link-time optimizations"),
metadata: Vec<String> = (Vec::new(), parse_list, [TRACKED],
"metadata to mangle symbol names with"),
no_prepopulate_passes: bool = (false, parse_no_flag, [TRACKED],
"give an empty list of passes to the pass manager"),
no_redzone: Option<bool> = (None, parse_opt_bool, [TRACKED],
"disable the use of the redzone"),
no_stack_check: bool = (false, parse_no_flag, [UNTRACKED],
"this option is deprecated and does nothing"),
no_vectorize_loops: bool = (false, parse_no_flag, [TRACKED],
"disable loop vectorization optimization passes"),
no_vectorize_slp: bool = (false, parse_no_flag, [TRACKED],
"disable LLVM's SLP vectorization pass"),
opt_level: String = ("0".to_string(), parse_string, [TRACKED],
"optimization level (0-3, s, or z; default: 0)"),
overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
"use overflow checks for integer arithmetic"),
panic: Option<PanicStrategy> = (None, parse_panic_strategy, [TRACKED],
"panic strategy to compile crate with"),
passes: Vec<String> = (Vec::new(), parse_list, [TRACKED],
"a list of extra LLVM passes to run (space separated)"),
prefer_dynamic: bool = (false, parse_bool, [TRACKED],
"prefer dynamic linking to static linking (default: no)"),
profile_generate: SwitchWithOptPath = (SwitchWithOptPath::Disabled,
parse_switch_with_opt_path, [TRACKED],
"compile the program with profiling instrumentation"),
profile_use: Option<PathBuf> = (None, parse_opt_pathbuf, [TRACKED],
"use the given `.profdata` file for profile-guided optimization"),
relocation_model: Option<RelocModel> = (None, parse_relocation_model, [TRACKED],
"control generation of position-independent code (PIC) \
(`rustc --print relocation-models` for details)"),
remark: Passes = (Passes::Some(Vec::new()), parse_passes, [UNTRACKED],
"print remarks for these optimization passes (space separated, or \"all\")"),
rpath: bool = (false, parse_bool, [UNTRACKED],
"set rpath values in libs/exes (default: no)"),
save_temps: bool = (false, parse_bool, [UNTRACKED],
"save all temporary output files during compilation (default: no)"),
soft_float: bool = (false, parse_bool, [TRACKED],
"use soft float ABI (*eabihf targets only) (default: no)"),
target_cpu: Option<String> = (None, parse_opt_string, [TRACKED],
"select target processor (`rustc --print target-cpus` for details)"),
target_feature: String = (String::new(), parse_string, [TRACKED],
"target specific attributes. (`rustc --print target-features` for details). \
This feature is unsafe."),
}
options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
build_debugging_options, "Z", "debugging",
DB_OPTIONS, db_type_desc, dbsetters,
allow_features: Option<Vec<String>> = (None, parse_opt_comma_list, [TRACKED],
"only allow the listed language features to be enabled in code (space separated)"),
always_encode_mir: bool = (false, parse_bool, [TRACKED],
"encode MIR of all functions into the crate metadata (default: no)"),
asm_comments: bool = (false, parse_bool, [TRACKED],
"generate comments into the assembly (may change behavior) (default: no)"),
ast_json: bool = (false, parse_bool, [UNTRACKED],
"print the AST as JSON and halt (default: no)"),
ast_json_noexpand: bool = (false, parse_bool, [UNTRACKED],
"print the pre-expansion AST as JSON and halt (default: no)"),
binary_dep_depinfo: bool = (false, parse_bool, [TRACKED],
"include artifacts (sysroot, crate dependencies) used during compilation in dep-info \
(default: no)"),
borrowck: String = ("migrate".to_string(), parse_string, [UNTRACKED],
"select which borrowck is used (`mir` or `migrate`) (default: `migrate`)"),
borrowck_stats: bool = (false, parse_bool, [UNTRACKED],
"gather borrowck statistics (default: no)"),
chalk: bool = (false, parse_bool, [TRACKED],
"enable the experimental Chalk-based trait solving engine"),
codegen_backend: Option<String> = (None, parse_opt_string, [TRACKED],
"the backend to use"),
control_flow_guard: CFGuard = (CFGuard::Disabled, parse_cfguard, [UNTRACKED],
"use Windows Control Flow Guard (`disabled`, `nochecks` or `checks`)"),
crate_attr: Vec<String> = (Vec::new(), parse_string_push, [TRACKED],
"inject the given attribute in the crate"),
debug_macros: bool = (false, parse_bool, [TRACKED],
"emit line numbers debug info inside macros (default: no)"),
deduplicate_diagnostics: bool = (true, parse_bool, [UNTRACKED],
"deduplicate identical diagnostics (default: yes)"),
dep_info_omit_d_target: bool = (false, parse_bool, [TRACKED],
"in dep-info output, omit targets for tracking dependencies of the dep-info files \
themselves (default: no)"),
dep_tasks: bool = (false, parse_bool, [UNTRACKED],
"print tasks that execute and the color their dep node gets (requires debug build) \
(default: no)"),
dont_buffer_diagnostics: bool = (false, parse_bool, [UNTRACKED],
"emit diagnostics rather than buffering (breaks NLL error downgrading, sorting) \
(default: no)"),
dual_proc_macros: bool = (false, parse_bool, [TRACKED],
"load proc macros for both target and host, but only link to the target (default: no)"),
dump_dep_graph: bool = (false, parse_bool, [UNTRACKED],
"dump the dependency graph to $RUST_DEP_GRAPH (default: /tmp/dep_graph.gv) \
(default: no)"),
dump_mir: Option<String> = (None, parse_opt_string, [UNTRACKED],
"dump MIR state to file.
`val` is used to select which passes and functions to dump. For example:
`all` matches all passes and functions,
`foo` matches all passes for functions whose name contains 'foo',
`foo & ConstProp` only the 'ConstProp' pass for function names containing 'foo',
`foo | bar` all passes for function names containing 'foo' or 'bar'."),
dump_mir_dataflow: bool = (false, parse_bool, [UNTRACKED],
"in addition to `.mir` files, create graphviz `.dot` files with dataflow results \
(default: no)"),
dump_mir_dir: String = ("mir_dump".to_string(), parse_string, [UNTRACKED],
"the directory the MIR is dumped into (default: `mir_dump`)"),
dump_mir_exclude_pass_number: bool = (false, parse_bool, [UNTRACKED],
"exclude the pass number when dumping MIR (used in tests) (default: no)"),
dump_mir_graphviz: bool = (false, parse_bool, [UNTRACKED],
"in addition to `.mir` files, create graphviz `.dot` files (default: no)"),
emit_stack_sizes: bool = (false, parse_bool, [UNTRACKED],
"emit a section containing stack size metadata (default: no)"),
fewer_names: bool = (false, parse_bool, [TRACKED],
"reduce memory use by retaining fewer names within compilation artifacts (LLVM-IR) \
(default: no)"),
force_overflow_checks: Option<bool> = (None, parse_opt_bool, [TRACKED],
"force overflow checks on or off"),
force_unstable_if_unmarked: bool = (false, parse_bool, [TRACKED],
"force all crates to be `rustc_private` unstable (default: no)"),
fuel: Option<(String, u64)> = (None, parse_optimization_fuel, [TRACKED],
"set the optimization fuel quota for a crate"),
hir_stats: bool = (false, parse_bool, [UNTRACKED],
"print some statistics about AST and HIR (default: no)"),
human_readable_cgu_names: bool = (false, parse_bool, [TRACKED],
"generate human-readable, predictable names for codegen units (default: no)"),
identify_regions: bool = (false, parse_bool, [UNTRACKED],
"display unnamed regions as `'<id>`, using a non-ident unique id (default: no)"),
incremental_ignore_spans: bool = (false, parse_bool, [UNTRACKED],
"ignore spans during ICH computation -- used for testing (default: no)"),
incremental_info: bool = (false, parse_bool, [UNTRACKED],
"print high-level information about incremental reuse (or the lack thereof) \
(default: no)"),
incremental_verify_ich: bool = (false, parse_bool, [UNTRACKED],
"verify incr. comp. hashes of green query instances (default: no)"),
inline_in_all_cgus: Option<bool> = (None, parse_opt_bool, [TRACKED],
"control whether `#[inline]` functions are in all CGUs"),
input_stats: bool = (false, parse_bool, [UNTRACKED],
"gather statistics about the input (default: no)"),
insert_sideeffect: bool = (false, parse_bool, [TRACKED],
"fix undefined behavior when a thread doesn't eventually make progress \
(such as entering an empty infinite loop) by inserting llvm.sideeffect \
(default: no)"),
instrument_mcount: bool = (false, parse_bool, [TRACKED],
"insert function instrument code for mcount-based tracing (default: no)"),
keep_hygiene_data: bool = (false, parse_bool, [UNTRACKED],
"keep hygiene data after analysis (default: no)"),
link_native_libraries: bool = (true, parse_bool, [UNTRACKED],
"link native libraries in the linker invocation (default: yes)"),
link_only: bool = (false, parse_bool, [TRACKED],
"link the `.rlink` file generated by `-Z no-link` (default: no)"),
llvm_time_trace: bool = (false, parse_bool, [UNTRACKED],
"generate JSON tracing data file from LLVM data (default: no)"),
ls: bool = (false, parse_bool, [UNTRACKED],
"list the symbols defined by a library crate (default: no)"),
macro_backtrace: bool = (false, parse_bool, [UNTRACKED],
"show macro backtraces (default: no)"),
merge_functions: Option<MergeFunctions> = (None, parse_merge_functions, [TRACKED],
"control the operation of the MergeFunctions LLVM pass, taking \
the same values as the target option of the same name"),
meta_stats: bool = (false, parse_bool, [UNTRACKED],
"gather metadata statistics (default: no)"),
mir_emit_retag: bool = (false, parse_bool, [TRACKED],
"emit Retagging MIR statements, interpreted e.g., by miri; implies -Zmir-opt-level=0 \
(default: no)"),
mir_opt_level: usize = (1, parse_uint, [TRACKED],
"MIR optimization level (0-3; default: 1)"),
mutable_noalias: bool = (false, parse_bool, [TRACKED],
"emit noalias metadata for mutable references (default: no)"),
new_llvm_pass_manager: bool = (false, parse_bool, [TRACKED],
"use new LLVM pass manager (default: no)"),
nll_facts: bool = (false, parse_bool, [UNTRACKED],
"dump facts from NLL analysis into side files (default: no)"),
no_analysis: bool = (false, parse_no_flag, [UNTRACKED],
"parse and expand the source, but run no analysis"),
no_codegen: bool = (false, parse_no_flag, [TRACKED],
"run all passes except codegen; no output"),
no_generate_arange_section: bool = (false, parse_no_flag, [TRACKED],
"omit DWARF address ranges that give faster lookups"),
no_interleave_lints: bool = (false, parse_no_flag, [UNTRACKED],
"execute lints separately; allows benchmarking individual lints"),
no_leak_check: bool = (false, parse_no_flag, [UNTRACKED],
"disable the 'leak check' for subtyping; unsound, but useful for tests"),
no_link: bool = (false, parse_no_flag, [TRACKED],
"compile without linking"),
no_parallel_llvm: bool = (false, parse_no_flag, [UNTRACKED],
"run LLVM in non-parallel mode (while keeping codegen-units and ThinLTO)"),
no_profiler_runtime: bool = (false, parse_no_flag, [TRACKED],
"prevent automatic injection of the profiler_builtins crate"),
osx_rpath_install_name: bool = (false, parse_bool, [TRACKED],
"pass `-install_name @rpath/...` to the macOS linker (default: no)"),
panic_abort_tests: bool = (false, parse_bool, [TRACKED],
"support compiling tests with panic=abort (default: no)"),
parse_only: bool = (false, parse_bool, [UNTRACKED],
"parse only; do not compile, assemble, or link (default: no)"),
perf_stats: bool = (false, parse_bool, [UNTRACKED],
"print some performance-related statistics (default: no)"),
plt: Option<bool> = (None, parse_opt_bool, [TRACKED],
"whether to use the PLT when calling into shared libraries;
only has effect for PIC code on systems with ELF binaries
(default: PLT is disabled if full relro is enabled)"),
polonius: bool = (false, parse_bool, [UNTRACKED],
"enable polonius-based borrow-checker (default: no)"),
pre_link_arg: () = ((), parse_string_push, [UNTRACKED],
"a single extra argument to prepend the linker invocation (can be used several times)"),
pre_link_args: Vec<String> = (Vec::new(), parse_list, [UNTRACKED],
"extra arguments to prepend to the linker invocation (space separated)"),
print_fuel: Option<String> = (None, parse_opt_string, [TRACKED],
"make rustc print the total optimization fuel used by a crate"),
print_link_args: bool = (false, parse_bool, [UNTRACKED],
"print the arguments passed to the linker (default: no)"),
print_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
"print the LLVM optimization passes being run (default: no)"),
print_mono_items: Option<String> = (None, parse_opt_string, [UNTRACKED],
"print the result of the monomorphization collection pass"),
print_region_graph: bool = (false, parse_bool, [UNTRACKED],
"prints region inference graph. \
Use with RUST_REGION_GRAPH=help for more info (default: no)"),
print_type_sizes: bool = (false, parse_bool, [UNTRACKED],
"print layout information for each type encountered (default: no)"),
profile: bool = (false, parse_bool, [TRACKED],
"insert profiling code (default: no)"),
query_dep_graph: bool = (false, parse_bool, [UNTRACKED],
"enable queries of the dependency graph for regression testing (default: no)"),
query_stats: bool = (false, parse_bool, [UNTRACKED],
"print some statistics about the query system (default: no)"),
relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
"choose which RELRO level to use"),
report_delayed_bugs: bool = (false, parse_bool, [TRACKED],
"immediately print bugs registered with `delay_span_bug` (default: no)"),
run_dsymutil: bool = (true, parse_bool, [TRACKED],
"if on Mac, run `dsymutil` and delete intermediate object files (default: yes)"),
sanitizer: Option<Sanitizer> = (None, parse_sanitizer, [TRACKED],
"use a sanitizer"),
sanitizer_memory_track_origins: usize = (0, parse_sanitizer_memory_track_origins, [TRACKED],
"enable origins tracking in MemorySanitizer"),
sanitizer_recover: Vec<Sanitizer> = (vec![], parse_sanitizer_list, [TRACKED],
"enable recovery for selected sanitizers"),
saturating_float_casts: Option<bool> = (None, parse_opt_bool, [TRACKED],
"make float->int casts UB-free: numbers outside the integer type's range are clipped to \
the max/min integer respectively, and NaN is mapped to 0 (default: yes)"),
save_analysis: bool = (false, parse_bool, [UNTRACKED],
"write syntax and type analysis (in JSON format) information, in \
addition to normal output (default: no)"),
self_profile: SwitchWithOptPath = (SwitchWithOptPath::Disabled,
parse_switch_with_opt_path, [UNTRACKED],
"run the self profiler and output the raw event data"),
self_profile_events: Option<Vec<String>> = (None, parse_opt_comma_list, [UNTRACKED],
"specify the events recorded by the self profiler;
for example: `-Z self-profile-events=default,query-keys`
all options: none, all, default, generic-activity, query-provider, query-cache-hit
query-blocked, incr-cache-load, query-keys, function-args, args, llvm"),
share_generics: Option<bool> = (None, parse_opt_bool, [TRACKED],
"make the current crate share its generic instantiations"),
show_span: Option<String> = (None, parse_opt_string, [TRACKED],
"show spans for compiler debugging (expr|pat|ty)"),
span_free_formats: bool = (false, parse_bool, [UNTRACKED],
"exclude spans when debug-printing compiler state (default: no)"),
src_hash_algorithm: Option<SourceFileHashAlgorithm> = (None, parse_src_file_hash, [TRACKED],
"hash algorithm of source files in debug info (`md5`, or `sha1`)"),
strip: Strip = (Strip::None, parse_strip, [UNTRACKED],
"tell the linker which information to strip (`none` (default), `debuginfo` or `symbols`)"),
symbol_mangling_version: SymbolManglingVersion = (SymbolManglingVersion::Legacy,
parse_symbol_mangling_version, [TRACKED],
"which mangling version to use for symbol names"),
teach: bool = (false, parse_bool, [TRACKED],
"show extended diagnostic help (default: no)"),
terminal_width: Option<usize> = (None, parse_opt_uint, [UNTRACKED],
"set the current terminal width"),
thinlto: Option<bool> = (None, parse_opt_bool, [TRACKED],
"enable ThinLTO when possible"),
threads: usize = (1, parse_threads, [UNTRACKED],
"use a thread pool with N threads"),
time: bool = (false, parse_bool, [UNTRACKED],
"measure time of rustc processes (default: no)"),
time_llvm_passes: bool = (false, parse_bool, [UNTRACKED],
"measure time of each LLVM pass (default: no)"),
time_passes: bool = (false, parse_bool, [UNTRACKED],
"measure time of each rustc pass (default: no)"),
tls_model: Option<TlsModel> = (None, parse_tls_model, [TRACKED],
"choose the TLS model to use (`rustc --print tls-models` for details)"),
trace_macros: bool = (false, parse_bool, [UNTRACKED],
"for every macro invocation, print its name and arguments (default: no)"),
treat_err_as_bug: Option<usize> = (None, parse_treat_err_as_bug, [TRACKED],
"treat error number `val` that occurs as bug"),
ui_testing: bool = (false, parse_bool, [UNTRACKED],
"emit compiler diagnostics in a form suitable for UI testing (default: no)"),
unleash_the_miri_inside_of_you: bool = (false, parse_bool, [TRACKED],
"take the brakes off const evaluation. NOTE: this is unsound (default: no)"),
unpretty: Option<String> = (None, parse_unpretty, [UNTRACKED],
"present the input source, unstable (and less-pretty) variants;
valid types are any of the types for `--pretty`, as well as:
`expanded`, `expanded,identified`,
`expanded,hygiene` (with internal representations),
`everybody_loops` (all function bodies replaced with `loop {}`),
`hir` (the HIR), `hir,identified`,
`hir,typed` (HIR with types for each node),
`hir-tree` (dump the raw HIR),
`mir` (the MIR), or `mir-cfg` (graphviz formatted MIR)"),
unstable_options: bool = (false, parse_bool, [UNTRACKED],
"adds unstable command line options to rustc interface (default: no)"),
use_ctors_section: Option<bool> = (None, parse_opt_bool, [TRACKED],
"use legacy .ctors section for initializers rather than .init_array"),
verbose: bool = (false, parse_bool, [UNTRACKED],
"in general, enable more debug printouts (default: no)"),
verify_llvm_ir: bool = (false, parse_bool, [TRACKED],
"verify LLVM IR (default: no)"),
}