VasiliyFamiliya (./3) :
I have a question - how to incorporate a romwak commands to example program makefile, for simplification of MAME launch-ready roms building?

Add you romwak commands/batch after $(OBJC) --gap-fill=$(PADBYTE) -R .data -O binary $< $@

You shouldn't need romwak anyway, mame can load the raw files with a driver properly set up.