On 07/26/2012 06:38 AM, Eric Blake wrote: >>> Paolo, Eric, maybe you can provide advice on how to best tell make that >>> a recipe generates multiple files. >> >> Hmm, I would just do >> >> qapi-errors.h: qapi-errors.c >> qapi-errors.c: $(SRC_PATH)/qapi-schema-errors.json >> $(SRC_PATH)/scripts/qapi-errors.py >> $(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-errors.py -o >> "." < $<, " GEN $@") >> >> I think that's what I usually saw for bison (which creates both .h and .c). > > Indeed, per > https://www.gnu.org/software/automake/manual/automake.html#Multiple-Outputs, > that is an appropriate solution for a 2-file generation.
Or, since we depend on GNU make, we can use pattern rules instead
(untested):
%-errors.h %-errors.c: \
%(SRC_PATH)/%-schema-errors.json $(SRC_PATH)/srcipts/%-errors.py
$(call quiet-command,$(PYTHON) $(SRC_PATH)/scripts/qapi-errors.py -o
"." < $<, " GEN $@")
https://www.gnu.org/software/automake/manual/make.html#Pattern-Examples
--
Eric Blake ebl...@redhat.com +1-919-301-3266
Libvirt virtualization library http://libvirt.org
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