--- Pillow-3.0.0/mp_compile.py.orig	2015-10-01 16:27:09.000000000 +0100
+++ Pillow-3.0.0/mp_compile.py	2015-10-05 23:34:17.226557000 +0100
@@ -2,7 +2,7 @@
 # Tested on 2.7, looks to be identical to 3.3.
 
 from __future__ import print_function
-from multiprocessing import Pool, cpu_count
+from multiprocessing import Pool, cpu_count, freeze_support
 from distutils.ccompiler import CCompiler
 import os
 import sys
@@ -72,8 +72,10 @@
         try:
             # bug, only enable if we can make a Pool. see issue #790 and
             # http://stackoverflow.com/questions/6033599/oserror-38-errno-38-with-multiprocessing
-            pool = Pool(2)
-            CCompiler.compile = _mp_compile
+            if __name__ == '__main__':
+                freeze_support()
+                pool = Pool(2)
+                CCompiler.compile = _mp_compile
         except Exception as msg:
             print("Exception installing mp_compile, proceeding without:"
                   "%s" % msg)