--- 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

--- a/makefiledir/Makefile.config_writer	Sun Aug 20 13:39:33 2006 +0000
+++ b/makefiledir/Makefile.config_writer	Sun Aug 20 13:48:04 2006 +0000
@@ -32,6 +32,8 @@
 
 	$(call CONFIG_LINE,\# Disable asserts. Leave them on for easier bug finding)
 	$(call CONFIG_LINE,DISABLE_ASSERTS:=$(DISABLE_ASSERTS))
+	$(call CONFIG_LINE,\# Disable threads. Useful if you do not like it and for testing)
+	$(call CONFIG_LINE,NO_THREADS:=$(NO_THREADS))
 	$(call CONFIG_LINE,)
 
 	$(call CONFIG_LINE,\# See Makefile for details on these paths)

--- a/thread.c	Sun Aug 20 13:39:33 2006 +0000
+++ b/thread.c	Sun Aug 20 13:48:04 2006 +0000
@@ -4,10 +4,10 @@
 #include "thread.h"
 #include <stdlib.h>
 
-#if defined(__AMIGA__) || defined(__MORPHOS__)
-OTTDThread* OTTDCreateThread(OTTDThreadFunc function, void* arg) { return NULL; }
-void* OTTDJoinThread(OTTDThread* t) { return NULL; }
-void OTTDExitThread() { NOT_REACHED(); };
+#if defined(__AMIGA__) || defined(__MORPHOS__) || defined(NO_THREADS)
+OTTDThread *OTTDCreateThread(OTTDThreadFunc function, void *arg) { return NULL; }
+void *OTTDJoinThread(OTTDThread *t) { return NULL; }
+void OTTDExitThread(void) { NOT_REACHED(); };
 
 #elif defined(__OS2__)