--- Python-2.6a2/setup.py	2008-04-05 12:19:23.000000000 -0700
+++ setup.py	2008-04-05 13:45:43.000000000 -0700
@@ -1187,6 +1187,9 @@
 
         # Thomas Heller's _ctypes module
         self.detect_ctypes(inc_dirs, lib_dirs)
+        # _ctypes may be excluded, report as missing
+        if '_ctypes' not in [e.name for e in self.extensions]:
+            missing.append('_ctypes')
 
         # Platform-specific libraries
         if platform == 'linux2':
@@ -1545,6 +1548,11 @@
 
     def detect_ctypes(self, inc_dirs, lib_dirs):
         self.use_system_libffi = False
+        # Exclude module ctypes unless GNU gcc is being used.
+        if sysconfig.get_config_vars().get('CC', 'gcc') != 'gcc':
+            self.announce("INFO: Building module _ctypes requires GNU gcc", 2)
+            return
+
         include_dirs = []
         extra_compile_args = []
         extra_link_args = []