Remove build script from core-foundation-sys

Should result in faster build times

core-foundation-sys/Cargo.toml

@@ -6,7 +6,6 @@ repository = "https://github.com/servo/core-foundation-rs"
 version = "0.8.3"
 authors = ["The Servo Project Developers"]
 license = "MIT / Apache-2.0"
-build = "build.rs"
 
 [dependencies]
 

core-foundation-sys/build.rs

@@ -1,14 +0,0 @@
-// Copyright 2013-2015 The Servo Project Developers. See the COPYRIGHT
-// file at the top-level directory of this distribution.
-//
-// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
-// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
-// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
-// option. This file may not be copied, modified, or distributed
-// except according to those terms.
-
-fn main() {
-    if std::env::var("TARGET").unwrap().contains("-apple") {
-        println!("cargo:rustc-link-lib=framework=CoreFoundation");
-    }
-}

core-foundation-sys/src/lib.rs

@@ -10,6 +10,16 @@
 
 #![cfg_attr(all(feature="mac_os_10_7_support", feature="mac_os_10_8_features"), feature(linkage))] // back-compat requires weak linkage
 
+// Link to CoreFoundation on any Apple device.
+//
+// We don't use `target_vendor` since that is going to be deprecated:
+// https://github.com/rust-lang/lang-team/issues/102
+#[cfg_attr(
+    any(target_os = "macos", target_os = "ios", target_os = "tvos"),
+    link(name = "CoreFoundation", kind = "framework")
+)]
+extern "C" {}
+
 pub mod array;
 pub mod attributed_string;
 pub mod base;