--- setup.py.orig	2013-08-08 14:49:20.510959898 -0500
+++ setup.py	2013-08-08 14:52:54.330977933 -0500
@@ -99,10 +99,14 @@
             _add_directory(library_dirs, lib_root)
             _add_directory(include_dirs, include_root)
 
+        prefix = sysconfig.get_config_var("prefix")
+        if prefix:
+            _add_directory(library_dirs, os.path.join(prefix, "lib"))
+            _add_directory(include_dirs, os.path.join(prefix, "include"))
+
         #
         # locate tkinter libraries
 
-
         if _tkinter:
             TCL_VERSION = _tkinter.TCL_VERSION[:3]