Add vm subdirectory.

[pintos-anon] / src / Makefile

SUBDIRS = threads userprog vm filesys

all::
        @echo "Run 'make' in subdirectories $(SUBDIRS)."
        @echo "This top-level make has only 'clean' targets."

clean::
        for d in $(SUBDIRS); do $(MAKE) -C $$d $@; done

distclean::
        $(MAKE) clean
        find . -name '*~' -exec rm '{}' \;