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BUILD_SUBDIRS = threads userprog vm filesys intro
all::
@echo "Run 'make' in subdirectories: $(BUILD_SUBDIRS)."
@echo "This top-level make has only 'clean' targets."
CLEAN_SUBDIRS = $(BUILD_SUBDIRS) examples utils
clean::
for d in $(CLEAN_SUBDIRS); do $(MAKE) -C $$d $@; done
rm -f TAGS tags
distclean:: clean
find . -name '*~' -exec rm '{}' \;
TAGS_SUBDIRS = $(BUILD_SUBDIRS) devices lib
TAGS_SOURCES = find $(TAGS_SUBDIRS) -name \*.[chS] -print
TAGS::
etags --members `$(TAGS_SOURCES)`
tags::
ctags -T --no-warn `$(TAGS_SOURCES)`
cscope.files::
$(TAGS_SOURCES) > cscope.files
cscope:: cscope.files
cscope -b -q -k
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