define ggo_opts
	--output-dir=$(cmdline_dir) \
	--set-version="$(GIT_VERSION)" \
	--arg-struct-name=$(*F)_args_info \
	--file-name=$(*F).cmdline \
	--func-name=$(*F)_cmdline_parser \
	--set-package="para_$(*F)"
endef

.PRECIOUS: $(cmdline_dir)/%.cmdline.c $(cmdline_dir)/%.cmdline.h $(ggo_dir)/%.ggo

$(cmdline_dir)/%.cmdline.h $(cmdline_dir)/%.cmdline.c: $(ggo_dir)/%.ggo | $(cmdline_dir)
	@[ -z "$(Q)" ] || echo 'GGO $<'
	$(Q) $(GENGETOPT) $(ggo_opts) < $<
ifeq ($(ggo_descriptions_declared),no)
	echo 'extern const char *$(*F)_args_info_description;' >> $(cmdline_dir)/$(*F).cmdline.h
endif

$(m4depdir)/%.m4d: $(m4_ggo_dir)/%.m4 | $(m4depdir)
	@[ -z "$(Q)" ] || echo 'M4D $<'
	$(Q) m4 -I $(m4_ggo_dir) --debug=i $< 3>&1 1>/dev/null 2>&3 \
		| awk '{if ($$0 ~ "^m4debug: input read from ") \
		print "$(ggo_dir)/$(*F).ggo: " $$NF}' > $@

$(ggo_dir)/%.ggo: $(m4_ggo_dir)/%.m4 $(m4_ggo_dir)/header.m4 | $(ggo_dir)
	@[ -z "$(Q)" ] || echo 'M4 $<'
	$(Q) m4 -I $(m4_ggo_dir) $< > $@

$(help2man_dir)/para_%: $(ggo_dir)/%.ggo | $(help2man_dir)
	@[ -z "$(Q)" ] || echo 'G2X $<'
	$(Q) printf "#!/bin/sh\nif [ \"\$$1\" = '--version' ]; then \
			$(GENGETOPT) $(ggo_opts) --show-version < $<; \
		elif [ \"\$$1\" = '--help' ]; then \
			$(GENGETOPT)  $(ggo_opts) --show-detailed-help < $<; \
		else \
			exit 1; \
		fi\n" > $@.tmp
	$(Q) chmod 755 $@.tmp && mv $@.tmp $@