From cbfe1832c5eb03a365b589081e0579992cd69b50 Mon Sep 17 00:00:00 2001
From: Xidorn Quan <me@upsuper.org>
Date: Thu, 15 Dec 2016 18:03:44 +1100
Subject: [PATCH] Parallelize build-time bindgen

---
 components/style/build_gecko.rs | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/components/style/build_gecko.rs b/components/style/build_gecko.rs
index 193be7b2744..95abbd40186 100644
--- a/components/style/build_gecko.rs
+++ b/components/style/build_gecko.rs
@@ -617,8 +617,14 @@ mod bindings {
 pub fn generate() {
     use self::common::*;
     use std::fs;
+    use std::thread;
     fs::create_dir_all(&*OUTDIR_PATH).unwrap();
-    bindings::generate_structs(BuildType::Debug);
-    bindings::generate_structs(BuildType::Release);
-    bindings::generate_bindings();
+    let threads = vec![
+        thread::spawn(|| bindings::generate_structs(BuildType::Debug)),
+        thread::spawn(|| bindings::generate_structs(BuildType::Release)),
+        thread::spawn(|| bindings::generate_bindings()),
+    ];
+    for t in threads.into_iter() {
+        t.join().unwrap();
+    }
 }