-SUBDIRS = threads userprog vm filesys
+BUILD_SUBDIRS = threads userprog vm filesys
all::
- @echo "Run 'make' in subdirectories $(SUBDIRS)."
+ @echo "Run 'make' in subdirectories: $(BUILD_SUBDIRS)."
@echo "This top-level make has only 'clean' targets."
+CLEAN_SUBDIRS = $(BUILD_SUBDIRS) examples
+
clean::
- for d in $(SUBDIRS); do $(MAKE) -C $$d $@; done
+ for d in $(CLEAN_SUBDIRS); do $(MAKE) -C $$d $@; done
+ rm -f TAGS tags
-distclean::
- $(MAKE) clean
+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)
+