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

PHONY := __modfinal
__modfinal:

include $(objtree)/include/config/auto.conf
include $(srctree)/scripts/Kbuild.include

# for c_flags
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) $(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]  $@

ifdef CONFIG_LTO_CLANG
      cmd_ld_ko_o = 							\
	$(LD) -r $(LDFLAGS)                                 		\
		 $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) 		\
		 $(addprefix -T , $(KBUILD_LDS_MODULE))			\
		 $(shell [ -s $(@:.ko=.o.symversions) ] &&		\
			echo -T $(@:.ko=.o.symversions))  		\
		 -o $@ --whole-archive $(filter %.o, $^);		\
	$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)

  ifdef CONFIG_FTRACE_MCOUNT_RECORD
      cmd_ld_ko_o += ; $(objtree)/scripts/recordmcount $(RECORDMCOUNT_FLAGS) $@
  endif
else
      cmd_ld_ko_o =                                                     \
	$(LD) -r $(KBUILD_LDFLAGS)					\
		$(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE)		\
		$(addprefix -T , $(KBUILD_LDS_MODULE))			\
		-o $@ $(filter %.o, $^);				\
	$(if $(ARCH_POSTLINK), $(MAKE) -f $(ARCH_POSTLINK) $@, true)
endif

$(modules): %.ko: %.o %.mod.o $(KBUILD_LDS_MODULE) FORCE
	+$(call if_changed,ld_ko_o)

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)