# SPDX-License-Identifier: GPL-2.0-only# ===========================================================================# Module final link# =========================================================================== PHONY := __modfinal__modfinal: include include/config/auto.confinclude $(srctree)/scripts/Kbuild.include # for c_flags and objtool_argsinclude $(srctree)/scripts/Makefile.lib # find all modules listed in modules.ordermodules := $(sort $(shell cat $(MODORDER))) __modfinal: $(modules)	@: # modname and part-of-module are set to make c_flags define proper module flagsmodname = $(notdir $(@:.mod.o=))part-of-module = y quiet_cmd_cc_o_c = CC [M]  $@      cmd_cc_o_c = $(CC) $(c_flags) -c -o $@ $< %.mod.o: %.mod.c FORCE	$(call if_changed_dep,cc_o_c) ARCH_POSTLINK := $(wildcard $(srctree)/arch/$(SRCARCH)/Makefile.postlink) ifdef CONFIG_LTO_CLANG# With CONFIG_LTO_CLANG, reuse the object file we compiled for modpost to# avoid a second slow LTO linkprelink-ext := .lto # ELF processing was skipped earlier because we didn't have native code,# so let's now process the prelinked binary before we link the module. ifdef CONFIG_STACK_VALIDATIONifneq ($(SKIP_STACK_VALIDATION),1)cmd_ld_ko_o +=								\	$(objtree)/tools/objtool/objtool $(objtool_args)		\		$(@:.ko=$(prelink-ext).o); endif # SKIP_STACK_VALIDATIONendif # CONFIG_STACK_VALIDATION endif # CONFIG_LTO_CLANG 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 --btf_base vmlinux $@; \	else								\		printf "Skipping BTF generation for %s due to unavailability of vmlinux\n" $@ 1>&2; \	fi; # Same as newer-prereqs, but allows to exclude specified extra dependenciesnewer_prereqs_except = $(filter-out $(PHONY) $(1),$?) # Same as if_changed, but allows to exclude specified extra dependenciesif_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check),      \	$(cmd);                                                              \	printf '%s\n' 'cmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:)  # Re-generate module BTFs if either module's .ko or vmlinux changed$(modules): %.ko: %$(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 += FORCEFORCE: # 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)