Module cargo::core::profiles

Handles built-in and customizable compiler flag presets.

Profiles is a collections of built-in profiles, and profiles defined in the root manifest and configurations.

To start using a profile, most of the time you start from Profiles::new, which does the followings:

• Create a Profiles by merging profiles from configs onto the profile from root manifest (see merge_config_profiles).
• Add built-in profiles onto it (see Profiles::add_root_profiles).
• Process profile inheritance for each profiles. (see Profiles::add_maker).

Then you can query a Profile via Profiles::get_profile, which respects the profile overridden hierarchy described in below. The Profile you get is basically an immutable struct containing the compiler flag presets.

Profile overridden hierarchy

Profile settings can be overridden for specific packages and build-time crates. The precedence is explained in ProfileMaker. The algorithm happens within ProfileMaker::get_profile.

Structs

• Profile
  Profile settings used to determine which compiler flags to use for a target.
• ProfileMaker 🔒
  An object used for handling the profile hierarchy.
• Profiles
  Collection of all profiles.
• UnitFor
  Flags used in creating Units to indicate the purpose for the target, and to ensure the target’s dependencies have the correct settings.

Enums

• DebugInfo
  The debuginfo level setting.
• Lto
  The link-time-optimization setting.
• PanicSetting 🔒
  How Cargo processes the panic setting or profiles.
• PanicStrategy
  The panic setting.
• ProfileRoot
  The root profile (dev/release).
• Strip
  The setting for choosing which symbols to strip.
• StripInner

Functions

• get_config_profile 🔒
  Helper for fetching a profile from config.
• is_off 🔒
  Returns true if a string is a toggle that turns an option off.
• merge_config_profiles 🔒
  Takes the manifest profiles, and overlays the config profiles on-top.
• merge_profile 🔒
  Merge the given TOML profile into the given Profile.
• merge_toml_overrides 🔒
  Merge package and build overrides from the given TOML profile into the given Profile.
• validate_packages_unique 🔒
  Validate that a package does not match multiple package override specs.
• validate_packages_unmatched 🔒
  Check for any profile override specs that do not match any known packages.