Removed libc dependency by using std::os::raw types.

Author: SSheldon

Cargo.toml

@@ -12,7 +12,6 @@ license = "MIT"
 exclude = [".gitignore"]
 
 [dependencies]
-libc = ">= 0.1, < 0.3"
 block = "0.1"
 objc = "0.1"
 objc_id = "0.0"

src/data.rs

@@ -1,7 +1,7 @@
 use std::mem;
 use std::ops::Range;
+use std::os::raw::c_void;
 use std::slice;
-use libc::c_void;
 
 use objc_id::Id;
 use block::{Block, ConcreteBlock};

src/enumerator.rs

@@ -1,8 +1,8 @@
 use std::marker::PhantomData;
 use std::mem;
+use std::os::raw::c_ulong;
 use std::ptr;
 use std::slice;
-use libc::c_ulong;
 
 use objc::runtime::Object;
 use objc_id::Id;

src/lib.rs

@@ -1,7 +1,6 @@
 #![crate_name = "objc_foundation"]
 #![crate_type = "lib"]
 
-extern crate libc;
 #[macro_use]
 extern crate objc;
 extern crate objc_id;

src/string.rs

@@ -1,6 +1,6 @@
+use std::os::raw::c_char;
 use std::slice;
 use std::str;
-use libc::c_char;
 
 use objc_id::{Id, ShareId};
 

src/value.rs

@@ -2,8 +2,8 @@ use std::any::Any;
 use std::ffi::{CStr, CString};
 use std::marker::PhantomData;
 use std::mem;
+use std::os::raw::c_char;
 use std::str;
-use libc::c_char;
 
 use objc::{Encode, Encoding};
 use objc::runtime::Class;