tree: 7c17bf9f5f01b1c7a5e24f1f0e8d235c905a4d93 [path history] [tgz]
  1. .cargo-checksum.json
  2. .cargo-ok
  3. .travis.yml
  4. Cargo.toml
  5. LICENSE-APACHE
  6. LICENSE-MIT
  7. README.md
  8. src/
  9. tests/
vendor/cfg-if-0.1.2/README.md

cfg-if

Build Status

Documentation

A macro to ergonomically define an item depending on a large number of #[cfg] parameters. Structured like an if-else chain, the first matching branch is the item that gets emitted.

[dependencies]
cfg-if = "0.1"

Example

#[macro_use]
extern crate cfg_if;

cfg_if! {
    if #[cfg(unix)] {
        fn foo() { /* unix specific functionality */ }
    } else if #[cfg(target_pointer_width = "32")] {
        fn foo() { /* non-unix, 32-bit functionality */ }
    } else {
        fn foo() { /* fallback implementation */ }
    }
}

fn main() {
    foo();
}

License

cfg-if is primarily distributed under the terms of both the MIT license and the Apache License (Version 2.0), with portions covered by various BSD-like licenses.

See LICENSE-APACHE, and LICENSE-MIT for details.