-%.xml: %.tmpl
- $(DOCPROC) doc $< >$@
-
-ifeq ($@, "cleandocs")
-sinclude $(obj).depend
-$(obj).depend: $(patsubst %.xml, %.tmpl, $(DOCBOOKS))
- rm -f $(obj).depend ; \
- touch $(obj).depend ; \
- for file in $^ ; do \
- xmlfile=`echo "$${file}" | \
- sed "s/tmpl$$/xml/"` ; \
- echo -n "$${xmlfile}: ">> $(obj).depend ; \
- $(DOCPROC) depend $$file >> $(obj).depend ; \
- echo -e "\n\t$(DOCPROC) doc $< >$${xmlfile} " >> \
- $(obj).depend ; \
- done
+quiet_cmd_docproc = DOCPROC $@
+ cmd_docproc = SRCTREE=$(srctree)/ $(DOCPROC) doc $< >$@
+define rule_docproc
+ set -e; \
+ $(if $($(quiet)cmd_$(1)),echo ' $($(quiet)cmd_$(1))';) \
+ $(cmd_$(1)); \
+ ( \
+ echo 'cmd_$@ := $(cmd_$(1))'; \
+ echo $@: `SRCTREE=$(srctree) $(DOCPROC) depend $<`; \
+ ) > $(dir $@).$(notdir $@).cmd
+endef
+
+%.xml: %.tmpl FORCE
+ $(call if_changed_rule,docproc)
+
+###
+#Read in all saved dependency files
+cmd_files := $(wildcard $(foreach f,$(BOOKS),$(dir $(f)).$(notdir $(f)).cmd))
+
+ifneq ($(cmd_files),)
+ include $(cmd_files)