Error code E0458

An unknown "kind" was specified for a link attribute.

Erroneous code example:

#![allow(unused)]
fn main() {
#[link(kind = "wonderful_unicorn")] extern "C" {}
// error: unknown kind: `wonderful_unicorn`
}

Please specify a valid "kind" value, from one of the following:

• static
• dylib
• framework
• raw-dylib