$($($(call notdir,$1)_ZONESET)_$(call dir-nosl,$1)_NSDIFF) \
$(call notdir,$1) $1.zone
$(ALL_ZONEDIFFS) : %.zonediff : %.zone
$($($(call notdir,$1)_ZONESET)_$(call dir-nosl,$1)_NSDIFF) \
$(call notdir,$1) $1.zone
$(ALL_ZONEDIFFS) : %.zonediff : %.zone