Merge pull request #29 from sp3d/master

Make Windows deps target-conditional

Author: lhecker

Cargo.toml

@@ -22,8 +22,10 @@ exclude = [
 ]
 
 [dependencies]
-kernel32-sys = "0.2"
 libc = "0.2"
+
+[target.'cfg(windows)'.dependencies]
+kernel32-sys = "0.2"
 winapi = "0.2"
 
 [build-dependencies]

src/lib.rs

@@ -12,8 +12,10 @@
 //! and thus the building blocks for higher-level abstractions, like coroutines,
 //! cooperative threads (userland threads) or an equivalent to the C# keyword "yield".
 
-extern crate kernel32;
 extern crate libc;
+#[cfg(windows)]
+extern crate kernel32;
+#[cfg(windows)]
 extern crate winapi;
 
 /// Provides the `Context` and `Transfer` types for