BootstrapOverrideLld in bootstrap::core::config::toml::rust - Rust
Description: Determines if we should override the linker used for linking Rust code built during the bootstrapping process to be LLD.

Skip to main content

## BootstrapOverrideLld

# Enum BootstrapOverrideLld

Source

    pub enum BootstrapOverrideLld {
        None,
        SelfContained,
        External,
    }

Expand description

Determines if we should override the linker used for linking Rust code built during the bootstrapping process to be LLD.

The primary use-case for this is to make local (re)builds of Rust code faster when using bootstrap.

This does not affect the behavior of the built/distributed compiler when invoked outside of bootstrap. It might affect its performance/binary size though, as that can depend on the linker that links rustc.

There are two ways of overriding the linker to be LLD:

- Self-contained LLD: use `rust-lld` from the compiler’s sysroot
- External: use an external `lld` binary

It is configured depending on the target:

1. Everything except MSVC

- Self-contained: `-Clinker-features=+lld -Clink-self-contained=+linker`
- External: `-Clinker-features=+lld`

2. MSVC

- Self-contained: `-Clinker=<path to rust-lld>`
- External: `-Clinker=lld`

## Variants§

§

### None

Do not override the linker LLD

§

### SelfContained

Use `rust-lld` from the compiler’s sysroot

§

### External

Use an externally provided `lld` binary. Note that the linker name cannot be overridden, the binary has to be named `lld` and it has to be in $PATH.

## Implementations§

Source§

### impl BootstrapOverrideLld

Source

#### pub fn is_used(&self) -> bool

## Trait Implementations§

Source§

### impl Clone for BootstrapOverrideLld

Source§

#### fn clone(&self) -> BootstrapOverrideLld

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

#### fn clone_from(&mut self, source: &Self)

Performs copy-assignment from `source`. Read more
Source§

### impl Debug for BootstrapOverrideLld

Source§

#### fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more
Source§

### impl Default for BootstrapOverrideLld

Source§

#### fn default() -> BootstrapOverrideLld

Returns the “default value” for a type. Read more
Source§

### impl<'de> Deserialize<'de> for BootstrapOverrideLld

Source§

#### fn deserialize<D>(deserializer: D) -> Result<Self, D::Error>
where D: Deserializer<'de>,

Deserialize this value from the given Serde deserializer. Read more
Source§

### impl PartialEq for BootstrapOverrideLld

Source§

#### fn eq(&self, other: &BootstrapOverrideLld) -> bool

Tests for `self` and `other` values to be equal, and is used by `==`.
1.0.0 (const: unstable) · Source§

#### fn ne(&self, other: &Rhs) -> bool

Tests for `!=`. The default implementation is almost always sufficient, and should not be overridden without very good reason.
Source§

### impl Copy for BootstrapOverrideLld

Source§

### impl StructuralPartialEq for BootstrapOverrideLld

## Auto Trait Implementations§

§

### impl Freeze for BootstrapOverrideLld

§

### impl RefUnwindSafe for BootstrapOverrideLld

§

### impl Send for BootstrapOverrideLld

§

### impl Sync for BootstrapOverrideLld

§

### impl Unpin for BootstrapOverrideLld

§

### impl UnsafeUnpin for BootstrapOverrideLld

§

### impl UnwindSafe for BootstrapOverrideLld

## Blanket Implementations§

Source§

### impl<T> Any for T
where T: 'static + ?Sized,

Source§

#### fn type_id(&self) -> TypeId

Gets the `TypeId` of `self`. Read more
Source§

### impl<T> Borrow<T> for T
where T: ?Sized,

Source§

#### fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
Source§

### impl<T> BorrowMut<T> for T
where T: ?Sized,

Source§

#### fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
Source§

### impl<T> CloneToUninit for T
where T: Clone,

Source§

#### unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (`clone_to_uninit`)
Performs copy-assignment from `self` to `dest`. Read more
Source§

### impl<T> From<T> for T

Source§

#### fn from(t: T) -> T

Returns the argument unchanged.

Source§

### impl<T, U> Into<U> for T
where U: From<T>,

Source§

#### fn into(self) -> U

Calls `U::from(self)`.

That is, this conversion is whatever the implementation of `From<T> for U` chooses to do.

§

### impl<T> Pointable for T

§

#### const ALIGN: usize

The alignment of pointer.
§

#### type Init = T

The type for initializers.
§

#### unsafe fn init(init: <T as Pointable>::Init) -> usize

Initializes a with the given initializer. Read more
§

#### unsafe fn deref<'a>(ptr: usize) -> &'a T

Dereferences the given pointer. Read more
§

#### unsafe fn deref_mut<'a>(ptr: usize) -> &'a mut T

Mutably dereferences the given pointer. Read more
§

#### unsafe fn drop(ptr: usize)

Drops the object pointed to by the given pointer. Read more
Source§

### impl<T> Same for T

Source§

#### type Output = T

Should always be `Self`
Source§

### impl<T> ToOwned for T
where T: Clone,

Source§

#### type Owned = T

The resulting type after obtaining ownership.
Source§

#### fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
Source§

#### fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
Source§

### impl<T, U> TryFrom<U> for T
where U: Into<T>,

Source§

#### type Error = Infallible

The type returned in the event of a conversion error.
Source§

#### fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
Source§

### impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

Source§

#### type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
Source§

#### fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.
Source§

### impl<T> DeserializeOwned for T
where T: for<'de> Deserialize<'de>,

## Layout§

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain `repr(...)` attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 1 byte

Size for each variant:

- `None`: 0 bytes
- `SelfContained`: 0 bytes
- `External`: 0 bytes