Enum System 

pub enum System {
    Off,
    Last,
    First,
}

Whether the platform’s own include directories are searched, and where in the order they go.

Set by #pragma cinrs system_include in a unit and by SYSTEM_ENV_VAR across a crate; see the module docs.

Variants

Off

Not searched at all, which is where the switch starts.

Last

Searched after the bundled headers: the bundled <stdio.h> still wins, and only a header cinrs does not carry — <sys/stat.h>, <pthread.h> — comes from the platform. #pragma cinrs system_include.

First

Searched before them, so that the platform’s copy of every header wins. #pragma cinrs system_include first.

Implementations

impl System

pub fn from_env_value(value: &str) -> Option<Self>

The value SYSTEM_ENV_VAR holds, read the way a build system spells a boolean: 1, on, true and yes for System::Last, first for System::First, and 0, off, false, no or nothing at all for System::Off. Anything else is None, which the caller reports.

pub fn is_on(self) -> bool

Whether the platform’s directories are searched at all.

Trait Implementations

impl Clone for System

fn clone(&self) -> Self

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for System

impl Debug for System

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

Formats the value using the given formatter.

impl Default for System

fn default() -> Self

Returns the “default value” for a type.

impl Eq for System

impl PartialEq for System

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

Equality operator ==.

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

Inequality operator !=.

impl StructuralPartialEq for System