1SUBDIRS = Basic Custom DepthConverter Invert OpenGL Overlay Rectangle Test 2 3all: subdirs 4 5.PHONY: subdirs clean $(SUBDIRS) 6 7subdirs: $(SUBDIRS) 8 9$(SUBDIRS): 10 $(MAKE) -C $@ 11 12clean : 13 for i in $(SUBDIRS) ; do \ 14 $(MAKE) -C $$i clean; \ 15 done 16