TREE_DIRS     = bin lib src \
		src/driver \
		src/helper \
		src/internal \
		src/logic \
		src/output \
		src/skin \

tree.tag:
		mkdir -p $(TREE_DIRS)
		touch tree.tag

tree-distclean:
		rmdir $(TREE_DIRS) 2> /dev/null || true

distclean:	tree-distclean