--- a/Makefile	Sun Aug 20 13:39:33 2006 +0000
+++ b/Makefile	Sun Aug 20 13:48:04 2006 +0000
@@ -511,6 +511,10 @@
 CFLAGS += -DNDEBUG
 endif
 
+ifdef NO_THREADS
+CFLAGS += -DNO_THREADS
+endif
+
 # automatically disables asserts for release
 ifdef RELEASE
 ifndef ENABLE_ASSERTS