makefile

可靠UDP传输, 长距离传输或者无线传输比TCP效率要高很多

DIRS = src app
TARGETS = all clean install

$(TARGETS): %: $(patsubst %, %.%, $(DIRS))

$(foreach TGT, $(TARGETS), $(patsubst %, %.$(TGT), $(DIRS))):
	$(MAKE) -C $(subst ., , $@)