.depend should be in DIST_CLEAN, not MAINTAINER_CLEAN
$(PROG) $(LIBRARY) $(HS_IFACES) $(HS_HCS) $(HS_SS) \
a.out
$(PROG) $(LIBRARY) $(HS_IFACES) $(HS_HCS) $(HS_SS) \
a.out
-MAINTAINER_CLEAN_FILES += .depend $(BOOT_SRCS)
+DIST_CLEAN_FILES += .depend
+MAINTAINER_CLEAN_FILES += $(BOOT_SRCS)
#
# `Standard' set of files to clean out.
#
# `Standard' set of files to clean out.