From 358b2ab4ba9d08bc47b59bf39811b6472acbc53a Mon Sep 17 00:00:00 2001
From: Todd Gamblin <tgamblin@llnl.gov>
Date: Sun, 17 Jan 2016 18:12:08 -0800
Subject: [PATCH] Temporary fix: Clang is the default compiler on Mac OS X.

---
 lib/spack/spack/compilers/__init__.py | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/lib/spack/spack/compilers/__init__.py b/lib/spack/spack/compilers/__init__.py
index 2a3d67c731..facc9c338b 100644
--- a/lib/spack/spack/compilers/__init__.py
+++ b/lib/spack/spack/compilers/__init__.py
@@ -27,6 +27,7 @@
 """
 import imp
 import os
+import platform
 
 from llnl.util.lang import memoized, list_modules
 from llnl.util.filesystem import join_path
@@ -47,7 +48,11 @@
 _required_instance_vars = ['cc', 'cxx', 'f77', 'fc']
 
 # TODO: customize order in config file
-_default_order = ['gcc', 'intel', 'pgi', 'clang', 'xlc']
+if platform.system() == 'Darwin':
+    _default_order = ['clang', 'gcc', 'intel']
+else:
+    _default_order = ['gcc', 'intel', 'pgi', 'clang', 'xlc']
+
 
 def _auto_compiler_spec(function):
     def converter(cspec_like, *args, **kwargs):