acrn-kernel/scripts/mod/Makefile

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hostprogs-y := modpost mk_elfconfig
always := $(hostprogs-y) empty.o
modpost-objs := modpost.o file2alias.o sumversion.o
# dependencies on generated files need to be listed explicitly
$(obj)/modpost.o $(obj)/file2alias.o $(obj)/sumversion.o: $(obj)/elfconfig.h
quiet_cmd_elfconfig = MKELF $@
cmd_elfconfig = $(obj)/mk_elfconfig $(ARCH) < $< > $@
$(obj)/elfconfig.h: $(obj)/empty.o $(obj)/mk_elfconfig FORCE
$(call if_changed,elfconfig)
targets += elfconfig.h