Struct Cfg 

pub struct Cfg {
    pub target_os: String,
    pub target_family: Option<String>,
    pub target_arch: String,
    pub target_endian: String,
    pub target_pointer_width: String,
    pub target_env: String,
    pub target_vendor: Option<String>,
    pub target_has_atomic: Vec<String>,
    pub target_feature: Vec<String>,
    /* private fields */
}

The result of parsing the output of rustc --print cfg

Fields

target_os: String

Equivalent to cfg(target_os = "..")

target_family: Option<String>

Equivalent to cfg(unix) or cfg(windows)

target_arch: String

Equivalent to cfg(target_arch = "..")

target_endian: String

Equivalent to cfg(target_endian = "..")

target_pointer_width: String

Equivalent to cfg(target_pointer_width = "..")

target_env: String

Equivalent to cfg(target_env = "..")

target_vendor: Option<String>

Equivalent to cfg(target_vendor = "..").

target_has_atomic: Vec<String>

Equivalent to cfg(target_has_atomic = "..")

target_feature: Vec<String>

Equivalent to cfg(target_feature = "..")

Implementations

impl Cfg

pub fn of(target: &str) -> Result<Cfg, Error>

Runs rustc --target <target> --print cfg and returns the parsed output.

The target should be a “triple” from the list of supported rustc targets. A list of supported rustc targets can be obtained using the rustc --print target-list command. This should not be confused with Cargo targets, i.e. binaries, [[bin]] and a library [lib] define in a package’s manifest (Cargo.toml).