SUBDIRS = hwk rec

install :
	@for i in $(SUBDIRS); do \
        echo "make install in $$i..."; \
        (cd $$i; $(MAKE) $(MFLAGS) install); done

clean :
	@for i in $(SUBDIRS); do \
        echo "make clean in $$i..."; \
        (cd $$i; $(MAKE) $(MFLAGS) clean); done