$(foreach special,$(special-classes), \
$(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
$(eval subdirs+=$$(subst $(CURDIR)/,,$$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y)))))
$(foreach special,$(special-classes), \
$(foreach item,$($(special)-y), $(call $(special)-handler,$(dir $(1)),$(item)))) \
$(eval subdirs+=$$(subst $(CURDIR)/,,$$(abspath $$(addprefix $(dir $(1)),$$(subdirs-y)))))