errors

lib\wand_extern.rs:5:12: 5:26 error: unresolved name
lib\wand_extern.rs:5 use types::{MagickWandPtr, ImagePtr};
                                 ^~~~~~~~~~~~~~
lib\wand_extern.rs:5:12: 5:26 error: failed to resolve import: types::MagickWandPtr
lib\wand_extern.rs:5 use types::{MagickWandPtr, ImagePtr};
                                 ^~~~~~~~~~~~~~
lib\wand_extern.rs:5:27: 5:36 error: unresolved name
lib\wand_extern.rs:5 use types::{MagickWandPtr, ImagePtr};
                                                ^~~~~~~~~
lib\wand_extern.rs:5:27: 5:36 error: failed to resolve import: types::ImagePtr
lib\wand_extern.rs:5 use types::{MagickWandPtr, ImagePtr};

test_wand_extern.rs

/* test/test_wand_extern.rs */
use wand_extern::wand;
#[path = "../lib/wand_extern.rs"]
mod wand_extern;

#[test]
fn test_it_compiles() {
  unsafe { wand::MagickWandGenesis(); }
  assert!(true);
}

types.rs

pub type MagickWandPtr = *libc::c_void;
pub type ImagePtr = *libc::c_void;

wand_extern.rs

use types::{MagickWandPtr, ImagePtr};
mod types;

#[link_name = "CORE_DB_wand_"]
#[link_args = "-LG:\\Programs\\ImageMagick-6.8.4\\VisualMagick\\lib"]
pub extern mod wand {
  fn MagickWandGenesis();
	fn MagickWandTerminus();
}