From 6b96ece247d4858b0d80058118d5090ad0a1fd91 Mon Sep 17 00:00:00 2001
From: Oliver Middleton <olliemail27@gmail.com>
Date: Thu, 5 Jan 2017 22:26:04 +0000
Subject: [PATCH] rustbuild: Stop building docs for std dependancies

---
 src/bootstrap/doc.rs | 11 ++++++++++-
 1 file changed, 10 insertions(+), 1 deletion(-)

diff --git a/src/bootstrap/doc.rs b/src/bootstrap/doc.rs
index bbbf5cba8a1ab..5213b695216f2 100644
--- a/src/bootstrap/doc.rs
+++ b/src/bootstrap/doc.rs
@@ -152,7 +152,16 @@ pub fn std(build: &Build, stage: u32, target: &str) {
     cargo.arg("--manifest-path")
          .arg(build.src.join("src/rustc/std_shim/Cargo.toml"))
          .arg("--features").arg(build.std_features())
-         .arg("-p").arg("std");
+         .arg("--no-deps");
+
+    for krate in &["alloc", "collections", "core", "std", "std_unicode"] {
+        cargo.arg("-p").arg(krate);
+        // Create all crate output directories first to make sure rustdoc uses
+        // relative links.
+        // FIXME: Cargo should probably do this itself.
+        t!(fs::create_dir_all(out_dir.join(krate)));
+    }
+
     build.run(&mut cargo);
     cp_r(&out_dir, &out)
 }