--- setup.py.orig	2010-02-11 20:33:58.674306600 -0500
+++ setup.py	2010-02-11 20:43:03.625069500 -0500
@@ -1266,6 +1266,8 @@
         if platform == 'sunos5':
             include_dirs.append('/usr/openwin/include')
             added_lib_dirs.append('/usr/openwin/lib')
+        elif platform == 'cygwin':
+            include_dirs.append('/usr/include')
         elif os.path.exists('/usr/X11R6/include'):
             include_dirs.append('/usr/X11R6/include')
             added_lib_dirs.append('/usr/X11R6/lib64')