--- gforth/arch/generic/machine.h	1998/12/13 23:30:00	1.6
+++ gforth/arch/generic/machine.h	1999/02/06 22:28:22	1.7
@@ -21,6 +21,10 @@
   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */
 
+#ifndef THREADING_SCHEME
+#define THREADING_SCHEME 6
+#endif
+
 /* define SYSCALL */
 
 #ifndef SYSCALL