#![feature(link_cfg)] | |
#[link(name = "return1", cfg(foo))] | |
#[link(name = "return2", cfg(bar))] | |
extern "C" { | |
fn my_function() -> i32; | |
} | |
fn main() { | |
unsafe { | |
let v = my_function(); | |
if cfg!(foo) { | |
assert_eq!(v, 1); | |
} else if cfg!(bar) { | |
assert_eq!(v, 2); | |
} else { | |
panic!("unknown"); | |
} | |
} | |
} |