Linking with kind=framework
is only supported when targeting macOS, as frameworks are specific to that operating system.
Erroneous code example:
#[link(name = "FooCoreServices", kind = "framework")] extern {} // OS used to compile is Linux for example
To solve this error you can use conditional compilation:
#[cfg_attr(target="macos", link(name = "FooCoreServices", kind = "framework"))] extern {}
See more: https://doc.rust-lang.org/reference/attributes.html#conditional-compilation