From 722a43aabeff3d4d3d1f01508f5f88f16936efd1 Mon Sep 17 00:00:00 2001
From: Dominyk Tiller <dominyktiller@gmail.com>
Date: Fri, 18 Sep 2015 15:11:04 +0100
Subject: [PATCH] doctor: add xcode 7 SDK check

---
 Library/Homebrew/cmd/doctor.rb | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/Library/Homebrew/cmd/doctor.rb b/Library/Homebrew/cmd/doctor.rb
index 39d3203023..386c89891f 100644
--- a/Library/Homebrew/cmd/doctor.rb
+++ b/Library/Homebrew/cmd/doctor.rb
@@ -573,6 +573,19 @@ class Checks
     end
   end
 
+  # Xcode 7 lacking the 10.10 SDK is forcing sysroot to be declared
+  # nil on 10.10 & breaking compiles. CLT is workaround.
+  def check_sdk_path_not_nil_yosemite
+    if MacOS.version == :yosemite && MacOS::Xcode.installed? && MacOS.sdk_path.nil?
+      <<-EOS.undent
+      Xcode 7 lacks the 10.10 SDK which can cause some builds to fail.
+      We recommend installing the Command Line Tools with:
+        xcode-select --install
+      to resolve this issue.
+     EOS
+    end
+  end
+
   def check_user_path_1
     $seen_prefix_bin = false
     $seen_prefix_sbin = false