.PHONY: all: clocktest threaded_memtest .PHONY: clean clean: rm -f clocktest threaded_memtest threaded_memtest: CFLAGS += -pthread threaded_memtest: CFLAGS += -Wno-unused-but-set-variable clocktest: CFLAGS += -D_POSIX_C_SOURCE=199309L -D_BSD_SOURCE clocktest: LDLIBS += -lrt CFLAGS += -Wall