linux-libre/arch/ia64/kernel/Makefile.gate

# The gate DSO image is built using a special linker script.

targets += gate.so gate-syms.o

extra-y += gate.so gate-syms.o gate.lds gate.o

CPPFLAGS_gate.lds := -P -C -U$(ARCH)

quiet_cmd_gate = GATE $@
      cmd_gate = $(CC) -nostdlib $(GATECFLAGS_$(@F)) -Wl,-T,$(filter-out FORCE,$^) -o $@

GATECFLAGS_gate.so = -shared -s -Wl,-soname=linux-gate.so.1 \
		     $(call cc-ldoption, -Wl$(comma)--hash-style=sysv)
$(obj)/gate.so: $(obj)/gate.lds $(obj)/gate.o FORCE
	$(call if_changed,gate)

$(obj)/built-in.o: $(obj)/gate-syms.o
$(obj)/built-in.o: ld_flags += -R $(obj)/gate-syms.o

GATECFLAGS_gate-syms.o = -r
$(obj)/gate-syms.o: $(obj)/gate.lds $(obj)/gate.o FORCE
	$(call if_changed,gate)

# gate-data.o contains the gate DSO image as data in section .data..gate.
# We must build gate.so before we can assemble it.
# Note: kbuild does not track this dependency due to usage of .incbin
$(obj)/gate-data.o: $(obj)/gate.so