+TEXIDEP = awk '/^@include/ { printf "$@: $(@D)/%s\n", $$2 }' <$< >$(@:%=%.d)
+
+GENTEXI = format codec
+GENTEXI := $(GENTEXI:%=doc/avoptions_%.texi)
+
+$(GENTEXI): TAG = GENTEXI
+$(GENTEXI): doc/avoptions_%.texi: doc/print_options
+ $(M)doc/print_options $* > $@
+
+doc/%.html: TAG = HTML
+doc/%.html: doc/%.texi $(SRC_PATH)/doc/t2h.init $(GENTEXI)
+ $(Q)$(TEXIDEP)
+ $(M)texi2html -I doc -monolithic --init-file $(SRC_PATH)/doc/t2h.init --output $@ $<
+
+doc/%.pod: TAG = POD
+doc/%.pod: doc/%.texi $(SRC_PATH)/doc/texi2pod.pl $(GENTEXI)
+ $(Q)$(TEXIDEP)
+ $(M)$(SRC_PATH)/doc/texi2pod.pl -Idoc $< $@
+
+doc/%.1: TAG = MAN
+doc/%.1: doc/%.pod $(GENTEXI)
+ $(M)pod2man --section=1 --center=" " --release=" " $< > $@
+
+$(DOCS) doc/doxy/html: | doc/
+
+doc/doxy/html: $(SRC_PATH)/doc/Doxyfile $(INSTHEADERS)
+ $(M)$(SRC_PATH)/doc/doxy-wrapper.sh $(SRC_PATH) $^
+
+install-progs-$(CONFIG_DOC): install-man
+
+install-man: $(MANPAGES)
+ $(Q)mkdir -p "$(MANDIR)/man1"
+ $(INSTALL) -m 644 $(MANPAGES) "$(MANDIR)/man1"
+
+uninstall: uninstall-man
+
+uninstall-man:
+ $(RM) $(addprefix "$(MANDIR)/man1/",$(ALLMANPAGES))
+
+clean::
+ $(RM) doc/*.html doc/*.pod doc/*.1 $(CLEANSUFFIXES:%=doc/%) doc/avoptions_*.texi
+ $(RM) -r doc/doxy/html
+
+-include $(wildcard $(DOCS:%=%.d))
+
+.PHONY: apidoc documentation