Enum Linkage 

#[repr(u8)]
pub enum Linkage {
    External = 0,
    Weak = 1,
    Appending = 2,
    Internal = 3,
    Linkonce = 4,
    Dllimport = 5,
    Dllexport = 6,
    ExternWeak = 7,
    Common = 8,
    Private = 9,
    WeakOdr = 10,
    LinkonceOdr = 11,
    AvailableExternally = 12,
    Deprecated1 = 13,
    Deprecated2 = 14,
}

These are bitcode-specific values, different from C++ enum

Variants

External = 0

Externally visible function

Weak = 1

Appending = 2

Special purpose, only applies to global arrays

Internal = 3

Rename collisions when linking (static functions).

Linkonce = 4

Dllimport = 5

👎Deprecated

Externally visible function Obsolete DLLImportLinkage

Dllexport = 6

👎Deprecated

Externally visible function Obsolete DLLExportLinkage

ExternWeak = 7

ExternalWeak linkage description.

Common = 8

Tentative definitions.

Private = 9

Like Internal, but omit from symbol table.

WeakOdr = 10

LinkonceOdr = 11

AvailableExternally = 12

Available for inspection, not emission.

Deprecated1 = 13

Deprecated2 = 14

Trait Implementations

impl Debug for Linkage

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

Formats the value using the given formatter.

impl TryFrom<u8> for Linkage

type Error = TryFromPrimitiveError<Linkage>

The type returned in the event of a conversion error.

fn try_from(number: u8) -> Result<Self, TryFromPrimitiveError<Self>>

Performs the conversion.

impl TryFromPrimitive for Linkage

const NAME: &'static str = "Linkage"

type Primitive = u8

type Error = TryFromPrimitiveError<Linkage>

fn try_from_primitive( number: Self::Primitive, ) -> Result<Self, TryFromPrimitiveError<Self>>