--- Modules/socketmodule.c.orig	Tue Aug 23 09:41:24 2011
+++ Modules/socketmodule.c	Tue Aug 23 10:43:08 2011
@@ -156,6 +156,10 @@
 # undef HAVE_GETHOSTBYNAME_R_6_ARG
 #endif
 
+#if defined(__OpenBSD__)
+# include <sys/uio.h>
+#endif
+
 #ifndef WITH_THREAD
 # undef HAVE_GETHOSTBYNAME_R
 #endif