default : $(DIRS)
	@for f in $(DIRS); do echo "Entering directory $$f"; cd $$f; $(MAKE) $@ || exit 1; cd ..; done

$(RECURSIVE_TARGETS) :  $(DIRS)
	@for f in $(DIRS); do echo "Entering directory $$f"; cd $$f; $(MAKE) $@ || exit 1; cd ..; done