diff --git a/Makefile.common b/Makefile.common
index 0d80d18eafe..eb5b4b661dc 100644
--- a/Makefile.common
+++ b/Makefile.common
@@ -468,6 +468,10 @@ $(BUILD_ROOT)/Debug/%.o: %.c $(BUILD_ROOT)/Debug/.dir
 	$(VERB) mkdir -p $(@D)
 	@date > $@
 
+# To create postscript files from dot files...
+%.ps: %.dot
+	dot -Tps < $< > $@
+
 # 'make clean' nukes the tree
 clean::
 	$(VERB) rm -rf $(BUILD_ROOT)/Debug $(BUILD_ROOT)/Release $(BUILD_ROOT)/Profile $(BUILD_ROOT)/Depend
diff --git a/Makefile.rules b/Makefile.rules
index 0d80d18eafe..eb5b4b661dc 100644
--- a/Makefile.rules
+++ b/Makefile.rules
@@ -468,6 +468,10 @@ $(BUILD_ROOT)/Debug/%.o: %.c $(BUILD_ROOT)/Debug/.dir
 	$(VERB) mkdir -p $(@D)
 	@date > $@
 
+# To create postscript files from dot files...
+%.ps: %.dot
+	dot -Tps < $< > $@
+
 # 'make clean' nukes the tree
 clean::
 	$(VERB) rm -rf $(BUILD_ROOT)/Debug $(BUILD_ROOT)/Release $(BUILD_ROOT)/Profile $(BUILD_ROOT)/Depend