Module config

Contains infrastructure for configuring the compiler, including parsing command-line options.

Modules

• cfg 🔒
  cfg and check-cfg configuration
• dep_tracking 🔒
  Command-line arguments passed to the compiler have to be incorporated with the dependency tracking system for incremental compilation. This module provides some utilities to make this more convenient.
• native_libs 🔒
  Parser for the -l command-line option, which links the generated crate to a native library.
• nightly_options
• parse
• sigpipe
  NOTE: Keep these constants in sync with library/std/src/sys/pal/unix/mod.rs!

Structs

• BranchProtection
• CheckCfg
  The parsed --check-cfg options.
• CodegenOptions
• CoverageOptions
  Individual flag values controlled by -Zcoverage-options.
• ExternEntry
• Externs
  Use tree-based collections to cheaply get a deterministic Hash implementation. Do not switch BTreeMap or BTreeSet out for an unsorted container type! That would break dependency tracking for command-line arguments.
• InstrumentXRay
  Settings for -Z instrument-xray flag.
• JsonConfig
  Possible json config files
• LinkSelfContained
  The different values -C link-self-contained can take: a list of individually enabled or disabled components used during linking, coming from the rustc distribution, instead of being found somewhere on the host system.
• LinkerFeaturesCli
  The different values that -Z linker-features can take on the CLI: a list of individually enabled or disabled features used during linking.
• LocationDetail
  The different settings that can be enabled via the -Z location-detail flag.
• NextSolverConfig
• Options
  The top-level command-line options struct.
• OutputFilenames
• OutputTypes
  Use tree-based collections to cheaply get a deterministic Hash implementation. Do not switch BTreeMap out for an unsorted container type! That would break dependency tracking for command-line arguments. Also only hash keys, since tracking should only depend on the output types, not the paths they’re written to.
• PacRet
• PatchableFunctionEntry
  -Z patchable-function-entry representation - how many nops to put before and after function entry.
• PrintRequest
• RemapPathScopeComponents
  Scopes used to determined if it need to apply to –remap-path-prefix
• RustcOptGroup
• UnstableOptions

Enums

• CFGuard
  The different settings that the -C control-flow-guard flag can have.
• CFProtection
  The different settings that the -Z cf-protection flag can have.
• CollapseMacroDebuginfo
  How to perform collapse macros debug info if-ext - if macro from different crate (related to callsite code) | cmd \ attr | no | (unspecified) | external | yes | | no | no | no | no | no | | (unspecified) | no | no | if-ext | yes | | external | no | if-ext | if-ext | yes | | yes | yes | yes | yes | yes |
• CoverageLevel
  Controls whether branch coverage or MC/DC coverage is enabled.
• CrateType
• DebugInfo
• DebugInfoCompression
• DumpMonoStatsFormat
  Which format to use for -Z dump-mono-stats
• EntryFnType
• ErrorOutputType
  The type of diagnostics output to generate.
• ExpectedValues
• ExternLocation
• FmtDebug
  Values for the -Z fmt-debug flag.
• FunctionReturn
  The different settings that the -Zfunction-return flag can have.
• IncrementalStateAssertion
  Used with -Z assert-incr-state.
• InliningThreshold
• Input
• InstrumentCoverage
  The different settings that the -C instrument-coverage flag can have.
• JsonUnusedExterns
  Report unused externs in event stream
• LinkerPluginLto
• Lto
  This is what the LtoCli values get mapped to after resolving defaults and and taking other command line options into account.
• LtoCli
  The different settings that the -C lto flag can have.
• MirIncludeSpans
  Whether extra span comments are included when dumping MIR, via the -Z mir-include-spans flag. By default, only enabled in the NLL MIR dumps, and disabled in all other passes.
• MirStripDebugInfo
• OomStrategy
  Default behavior to use in out-of-memory situations.
• OptLevel
• OptionKind
• OptionStability
• OutFileName
• OutputType
• PAuthKey
• Passes
• Polonius
  -Zpolonius values, enabling the borrow checker polonius analysis, and which version: legacy, or future prototype.
• PpHirMode
• PpMode
  Pretty print mode
• PpSourceMode
• PrintKind
• ProcMacroExecutionStrategy
  How to run proc-macro code when building this crate
• ResolveDocLinks
• SplitDwarfKind
  Split debug-information is enabled by -C split-debuginfo, this enum is only used if split debug-information is enabled (in either Packed or Unpacked modes), and the platform uses DWARF for debug-information.
• Strip
  The different settings that the -C strip flag can have.
• SwitchWithOptPath
• SymbolManglingVersion
• WasiExecModel

Constants

• CG_OPTIONS
• DWARF_OBJECT_EXT
• RLINK_EXT
• RUST_CGU_EXT
• Z_OPTIONS

Statics

• EDITION_STRING 🔒

Functions

• build_configuration
• build_session_options
• build_target_config
• check_error_format_stability 🔒
• collect_print_requests 🔒
• default_lib_output 🔒
• file_path_mapping 🔒
• get_cmd_lint_options
• host_tuple
• make_crate_type_option
• make_opt
• parse_assert_incr_state 🔒
• parse_color
  Parses the --color flag.
• parse_crate_edition
• parse_crate_types_from_list
• parse_error_format
  Parses the --error-format flag.
• parse_externs
• parse_json
  Parse the --json flag.
• parse_logical_env 🔒
• parse_opt_level 🔒
• parse_output_types 🔒
• parse_pretty 🔒
• parse_remap_path_prefix 🔒
• parse_target_triple
• rustc_optgroups
  Returns all rustc command line options, including metadata for each option, such as whether the option is stable.
• select_debuginfo 🔒
• should_override_cgus_and_disable_thinlto 🔒
• split_out_file_name 🔒

Type Aliases

• Cfg
  The parsed --cfg options that define the compilation environment of the crate, used to drive conditional compilation.