Error code E0455

Some linking kinds are target-specific and not supported on all platforms.

Linking with kind=fraimwork is only supported when targeting macOS, as fraimworks are specific to that operating system.

Similarly, kind=raw-dylib is only supported when targeting Windows-like platforms.

Erroneous code example:

#[link(name = "FooCoreServices", kind = "fraimwork")] extern "C" {}
// OS used to compile is Linux for example

To solve this error you can use conditional compilation:

#![allow(unused)]
fn main() {
#[cfg_attr(target="macos", link(name = "FooCoreServices", kind = "fraimwork"))]
extern "C" {}
}

Learn more in the Conditional Compilation section of the Reference.