dirs := intro base

all:
	@echo run: make dist

ARCHIVES := $(foreach dir,$(dirs),$(dir).tar.bz2)

TAR := tar cvfj

dist: clean $(ARCHIVES)

%.tar.bz2: %
	@cd $<; make clean
	@$(TAR) $<.tar.bz2 $</*

clean:
	@rm -f $(ARCHIVES)
