Enum Env

#[non_exhaustive]
pub enum Env {
    Gnu,
    Msvc,
    Musl,
    Newlib,
    Nto70,
    Nto71,
    Nto71Iosock,
    Nto80,
    OhOS,
    P1,
    P2,
    Relibc,
    Sgx,
    UClibc,
    Other(String),
}

Target enviroment that disambiguates the target platform by ABI / libc.

Note

This value is closely related to the fourth element of the platform target triple, though it is not identical. For example, embedded ABIs such as gnueabihf will simply define target_env as "gnu" (i.e. Env::Gnu)

Variants (Non-exhaustive)

Non-exhaustive enums could have additional variants added in future. Therefore, when matching against variants of non-exhaustive enums, an extra wildcard arm must be added to account for any future variants.

Gnu

The GNU C Library (glibc) gnu

Msvc

Microsoft Visual C(++) msvc

Musl

Clean, efficient, standards-conformant libc implementation. musl

Newlib

Newlib environment newlib

Nto70

NTO 7.0 environment nto70

Nto71

NTO 7.1 environment nto71

Nto71Iosock

NTO 7.1 iOSOCK environment nto71_iosock

Nto80

NTO 8.0 environment nto80

OhOS

Open Harmony OS ohos

P1

p1

P2

p2

Relibc

Relibc environment relibc

Sgx

Intel Software Guard Extensions (SGX) Enclave sgx

UClibc

C library for developing embedded Linux systems uclibc

Other(String)

Unknown value

Implementations

impl Env

pub fn as_str(&self) -> &str

String representing this environment which matches #[cfg(target_env)].

pub fn from_str<'a>(name: impl Into<Cow<'a, str>>) -> Self

Tries to parse the given string as an Env falling back to Env::Other for unknown values.

impl Env

pub fn target() -> Option<Self>

Gets the current target Env.

Trait Implementations

impl AsRef<str> for Env

fn as_ref(&self) -> &str

Converts this type into a shared reference of the (usually inferred) input type.

impl Clone for Env

fn clone(&self) -> Env

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Debug for Env

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

Formats the value using the given formatter.

impl Display for Env

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

Formats the value using the given formatter.

impl Hash for Env

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Env

fn cmp(&self, other: &Env) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Env

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

Tests for self and other values to be equal, and is used by ==.

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

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

impl PartialOrd for Env

fn partial_cmp(&self, other: &Env) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

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

Tests less than (for self and other) and is used by the < operator.

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

Tests less than or equal to (for self and other) and is used by the <= operator.

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

Tests greater than (for self and other) and is used by the > operator.

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

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl Eq for Env

impl StructuralPartialEq for Env