SUBDIRS = helloworld \ helloworld2 \ base \ arrow \ aspectframe \ filesel \ frame \ label \ table \ buttons \ radiobuttons \ scrolledwin \ all: list='$(SUBDIRS)'; \ for subdir in $$list; do \ (cd $$subdir && $(MAKE)); \ done clean: list='$(SUBDIRS)'; \ for subdir in $$list; do \ (cd $$subdir && $(MAKE) clean); \ done