$OpenBSD$
--- src/boehm-gc/include/config.h.in.orig	Mon Feb 13 18:16:00 2006
+++ src/boehm-gc/include/config.h.in	Mon Apr 10 07:56:57 2006
@@ -39,6 +39,9 @@
 /* gc freebsd threads */
 #undef GC_FREEBSD_THREADS
 
+/* gc openbsd pthreads */
+#undef GC_OPENBSD_PTHREADS
+
 /* gc gcj support */
 #undef GC_GCJ_SUPPORT
 
