From 8e38b2de42dda1752400524b69f76051586d469b Mon Sep 17 00:00:00 2001
From: Wang Xuerui <git@xen0n.name>
Date: Mon, 19 Dec 2016 16:39:19 +0800
Subject: [PATCH] rustbuild: package src only once for build triple

---
 src/bootstrap/dist.rs | 8 +++++++-
 src/bootstrap/step.rs | 2 +-
 2 files changed, 8 insertions(+), 2 deletions(-)

diff --git a/src/bootstrap/dist.rs b/src/bootstrap/dist.rs
index be51a6753fb62..6e3174ed2f6d0 100644
--- a/src/bootstrap/dist.rs
+++ b/src/bootstrap/dist.rs
@@ -346,8 +346,14 @@ pub fn analysis(build: &Build, compiler: &Compiler, target: &str) {
 }
 
 /// Creates the `rust-src` installer component and the plain source tarball
-pub fn rust_src(build: &Build) {
+pub fn rust_src(build: &Build, host: &str) {
     println!("Dist src");
+
+    if host != build.config.build {
+        println!("\tskipping, not a build host");
+        return
+    }
+
     let plain_name = format!("rustc-{}-src", package_vers(build));
     let name = format!("rust-src-{}", package_vers(build));
     let image = tmpdir(build).join(format!("{}-image", name));
diff --git a/src/bootstrap/step.rs b/src/bootstrap/step.rs
index def06ee698353..719fb82a56dce 100644
--- a/src/bootstrap/step.rs
+++ b/src/bootstrap/step.rs
@@ -499,7 +499,7 @@ pub fn build_rules(build: &Build) -> Rules {
     rules.dist("dist-src", "src")
          .default(true)
          .host(true)
-         .run(move |_| dist::rust_src(build));
+         .run(move |s| dist::rust_src(build, s.target));
     rules.dist("dist-docs", "src/doc")
          .default(true)
          .dep(|s| s.name("default:doc"))