From d999a8b170ed6c26ffc3786ea7286fdf5591ae5b Mon Sep 17 00:00:00 2001
From: "R. Andrew Ohana" <andrew.ohana@gmail.com>
Date: Wed, 11 Dec 2013 01:13:06 -0800
Subject: [PATCH] setup.py: only use real paths

---
 setup.py | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/setup.py b/setup.py
index ac7910a9a..814f85375 100644
--- a/setup.py
+++ b/setup.py
@@ -37,7 +37,10 @@ _LIB_IMAGING = (
 
 
 def _add_directory(path, dir, where=None):
-    if dir and os.path.isdir(dir) and dir not in path:
+    if dir is None:
+        return
+    dir = os.path.realpath(dir)
+    if os.path.isdir(dir) and dir not in path:
         if where is None:
             path.append(dir)
         else: