# SPDX-License-Identifier: GPL-2.0-only
  # ===========================================================================
  # Module final link
  # ===========================================================================
  
  PHONY := __modfinal
  __modfinal:

  include include/config/auto.conf

  include $(srctree)/scripts/Kbuild.include

  # for c_flags and mod-prelink-ext

  include $(srctree)/scripts/Makefile.lib
  
  # find all modules listed in modules.order
  modules := $(sort $(shell cat $(MODORDER)))
  
  __modfinal: $(modules)
  	@:

  # modname and part-of-module are set to make c_flags define proper module flags

  modname = $(notdir $(@:.mod.o=))

  part-of-module = y

  
  quiet_cmd_cc_o_c = CC [M]  $@

        cmd_cc_o_c = $(CC) $(filter-out $(CC_FLAGS_CFI), $(c_flags)) -c -o $@ $<

  
  %.mod.o: %.mod.c FORCE
  	$(call if_changed_dep,cc_o_c)
  
  ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink)
  
  quiet_cmd_ld_ko_o = LD [M]  $@

        cmd_ld_ko_o +=							\

  	$(LD) -r $(KBUILD_LDFLAGS)					\
  		$(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE)		\

  		-T scripts/module.lds -o $@ $(filter %.o, $^);		\

  	$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)

  quiet_cmd_btf_ko = BTF [M] $@

        cmd_btf_ko = 							\
  	if [ -f vmlinux ]; then						\

  		LLVM_OBJCOPY="$(OBJCOPY)" $(PAHOLE) -J $(PAHOLE_FLAGS) --btf_base vmlinux $@; \

  	else								\
  		printf "Skipping BTF generation for %s due to unavailability of vmlinux
  " $@ 1>&2; \
  	fi;

  
  # Same as newer-prereqs, but allows to exclude specified extra dependencies
  newer_prereqs_except = $(filter-out $(PHONY) $(1),$?)
  
  # Same as if_changed, but allows to exclude specified extra dependencies
  if_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check),      \
  	$(cmd);                                                              \
  	printf '%s
  ' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)

  # Re-generate module BTFs if either module's .ko or vmlinux changed

  $(modules): %.ko: %$(mod-prelink-ext).o %.mod.o scripts/module.lds $(if $(KBUILD_BUILTIN),vmlinux) FORCE

  	+$(call if_changed_except,ld_ko_o,vmlinux)
  ifdef CONFIG_DEBUG_INFO_BTF_MODULES
  	+$(if $(newer-prereqs),$(call cmd,btf_ko))
  endif

  
  targets += $(modules) $(modules:.ko=.mod.o)
  
  # Add FORCE to the prequisites of a target to force it to be always rebuilt.
  # ---------------------------------------------------------------------------
  
  PHONY += FORCE
  FORCE:
  
  # Read all saved command lines and dependencies for the $(targets) we
  # may be building above, using $(if_changed{,_dep}). As an
  # optimization, we don't need to read them if the target does not
  # exist, we will rebuild anyway in that case.
  
  existing-targets := $(wildcard $(sort $(targets)))
  
  -include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
  
  .PHONY: $(PHONY)