compiler/rustc_error_codes/src/error_codes/E0455.md

   1 Linking with `kind=framework` is only supported when targeting macOS,
   2 as frameworks are specific to that operating system.
   3
   4 Erroneous code example:
   5
   6 ```ignore (should-compile_fail-but-cannot-doctest-conditionally-without-macos)
   7 #[link(name = "FooCoreServices", kind = "framework")] extern "C" {}
   8 // OS used to compile is Linux for example
   9 ```
  10
  11 To solve this error you can use conditional compilation:
  12
  13 ```
  14 #[cfg_attr(target="macos", link(name = "FooCoreServices", kind = "framework"))]
  15 extern "C" {}
  16 ```
  17
  18 Learn more in the [Conditional Compilation][conditional-compilation] section
  19 of the Reference.
  20
  21 [conditional-compilation]: https://doc.rust-lang.org/reference/attributes.html#conditional-compilation