#export CXX = g++ #export CXXFLAGS = -O0 -g3 -Wall -fmessage-length=0 DIRS = server client .PHONY: all $(DIRS) all: $(DIRS) $(DIRS): $(MAKE) -C $@ .PHONY: clean clean: for dir in $(DIRS); do \ $(MAKE) -C $$dir clean; \ done