1.PHONY: test verify clean 2test: verify clean 3 4# verify_all.sh runs 'make' on sub-directories containing C tests 5verify: 6 ./verify_all.sh 7clean: 8 -rm verify.* 9 -$(MAKE) -C ../lib clean 10 -$(MAKE) -C arraylist_test clean 11 -$(MAKE) -C results_test clean 12