use platform-specific dependencies

Author: mdonoughe

rayon-demo/Cargo.toml

@@ -11,13 +11,17 @@ docopt = "1"
 fixedbitset = "0.1.5"
 glium = "0.21"
 lazy_static = "1"
-libc = "0.2"
 odds = "0.3"
 rand = "0.5"
 regex = "1"
 serde = "1"
 serde_derive = "1"
 time = "0.1"
+
+[target.'cfg(unix)'.dependencies]
+libc = "0.2"
+
+[target.'cfg(windows)'.dependencies]
 winapi = { version = "0.3", features = ["processthreadsapi"] }
 
 [dev-dependencies]

rayon-demo/src/main.rs

@@ -33,6 +33,7 @@ extern crate serde; // all
 extern crate cgmath; // nbody
 #[macro_use]
 extern crate glium; // nbody
+#[cfg(unix)]
 extern crate libc; // life
 extern crate rand; // nbody
 extern crate time; // nbody, sieve
@@ -43,6 +44,7 @@ extern crate num; // factorial
 extern crate lazy_static; // find
 extern crate fixedbitset; // tsp
 extern crate regex; // tsp
+#[cfg(windows)]
 extern crate winapi; // life
 
 #[cfg(test)]