19b9a3f20SMasahiro Yamada# SPDX-License-Identifier: GPL-2.0-only 29b9a3f20SMasahiro Yamada# =========================================================================== 39b9a3f20SMasahiro Yamada# Module final link 49b9a3f20SMasahiro Yamada# =========================================================================== 59b9a3f20SMasahiro Yamada 69b9a3f20SMasahiro YamadaPHONY := __modfinal 79b9a3f20SMasahiro Yamada__modfinal: 89b9a3f20SMasahiro Yamada 9214c0eeaSMasahiro Yamadainclude $(objtree)/include/config/auto.conf 109b9a3f20SMasahiro Yamadainclude $(srctree)/scripts/Kbuild.include 119b9a3f20SMasahiro Yamadainclude $(srctree)/scripts/Makefile.lib 129b9a3f20SMasahiro Yamada 139b9a3f20SMasahiro Yamada# find all modules listed in modules.order 14bad6beb2SMasahiro Yamadamodules := $(call read-file, modules.order) 159b9a3f20SMasahiro Yamada 16f65a4868SMasahiro Yamada__modfinal: $(modules:%.o=%.ko) 179b9a3f20SMasahiro Yamada @: 189b9a3f20SMasahiro Yamada 19eb27ea5cSMasahiro Yamada# modname and part-of-module are set to make c_flags define proper module flags 209b9a3f20SMasahiro Yamadamodname = $(notdir $(@:.mod.o=)) 21eb27ea5cSMasahiro Yamadapart-of-module = y 22b4f944baSMasahiro YamadaGCOV_PROFILE := n 23000e22a8SMasahiro Yamadaccflags-remove-y := $(CC_FLAGS_CFI) 249b9a3f20SMasahiro Yamada 259b9a3f20SMasahiro Yamada%.mod.o: %.mod.c FORCE 26bede1696SMasahiro Yamada $(call if_changed_rule,cc_o_c) 279b9a3f20SMasahiro Yamada 28bad6beb2SMasahiro Yamada.module-common.o: $(srctree)/scripts/module-common.c FORCE 29bede1696SMasahiro Yamada $(call if_changed_rule,cc_o_c) 30fdf94e44SThomas Weißschuh 31*01ecf7afSSteven Rostedtifneq ($(WARN_ON_UNUSED_TRACEPOINTS),) 32*01ecf7afSSteven Rostedtcmd_check_tracepoint = $(objtree)/scripts/tracepoint-update --module $<; 33*01ecf7afSSteven Rostedtendif 34*01ecf7afSSteven Rostedt 359b9a3f20SMasahiro Yamadaquiet_cmd_ld_ko_o = LD [M] $@ 36cc6d281fSThomas Weißschuh cmd_ld_ko_o = \ 379b9a3f20SMasahiro Yamada $(LD) -r $(KBUILD_LDFLAGS) \ 389b9a3f20SMasahiro Yamada $(KBUILD_LDFLAGS_MODULE) $(LDFLAGS_MODULE) \ 39214c0eeaSMasahiro Yamada -T $(objtree)/scripts/module.lds -o $@ $(filter %.o, $^) 409b9a3f20SMasahiro Yamada 415f9ae91fSAndrii Nakryikoquiet_cmd_btf_ko = BTF [M] $@ 42e732b538SAndrii Nakryiko cmd_btf_ko = \ 43214c0eeaSMasahiro Yamada if [ ! -f $(objtree)/vmlinux ]; then \ 442f7ab126SMiguel Ojeda printf "Skipping BTF generation for %s due to unavailability of vmlinux\n" $@ 1>&2; \ 452f7ab126SMiguel Ojeda else \ 46214c0eeaSMasahiro Yamada LLVM_OBJCOPY="$(OBJCOPY)" $(PAHOLE) -J $(PAHOLE_FLAGS) $(MODULE_PAHOLE_FLAGS) --btf_base $(objtree)/vmlinux $@; \ 47214c0eeaSMasahiro Yamada $(RESOLVE_BTFIDS) -b $(objtree)/vmlinux $@; \ 48e732b538SAndrii Nakryiko fi; 495f9ae91fSAndrii Nakryiko 505f9ae91fSAndrii Nakryiko# Same as newer-prereqs, but allows to exclude specified extra dependencies 515f9ae91fSAndrii Nakryikonewer_prereqs_except = $(filter-out $(PHONY) $(1),$?) 525f9ae91fSAndrii Nakryiko 535f9ae91fSAndrii Nakryiko# Same as if_changed, but allows to exclude specified extra dependencies 545f9ae91fSAndrii Nakryikoif_changed_except = $(if $(call newer_prereqs_except,$(2))$(cmd-check), \ 555f9ae91fSAndrii Nakryiko $(cmd); \ 5692215e7aSMasahiro Yamada printf '%s\n' 'savedcmd_$@ := $(make-cmd)' > $(dot-target).cmd, @:) 575f9ae91fSAndrii Nakryiko 585f9ae91fSAndrii Nakryiko# Re-generate module BTFs if either module's .ko or vmlinux changed 59bad6beb2SMasahiro Yamada%.ko: %.o %.mod.o .module-common.o $(objtree)/scripts/module.lds $(and $(CONFIG_DEBUG_INFO_BTF_MODULES),$(KBUILD_BUILTIN),$(objtree)/vmlinux) FORCE 60214c0eeaSMasahiro Yamada +$(call if_changed_except,ld_ko_o,$(objtree)/vmlinux) 615f9ae91fSAndrii Nakryikoifdef CONFIG_DEBUG_INFO_BTF_MODULES 625f9ae91fSAndrii Nakryiko +$(if $(newer-prereqs),$(call cmd,btf_ko)) 635f9ae91fSAndrii Nakryikoendif 64*01ecf7afSSteven Rostedt +$(call cmd,check_tracepoint) 659b9a3f20SMasahiro Yamada 66bad6beb2SMasahiro Yamadatargets += $(modules:%.o=%.ko) $(modules:%.o=%.mod.o) .module-common.o 679b9a3f20SMasahiro Yamada 688fb4ac1cSMasahiro Yamada# Add FORCE to the prerequisites of a target to force it to be always rebuilt. 699b9a3f20SMasahiro Yamada# --------------------------------------------------------------------------- 709b9a3f20SMasahiro Yamada 719b9a3f20SMasahiro YamadaPHONY += FORCE 729b9a3f20SMasahiro YamadaFORCE: 739b9a3f20SMasahiro Yamada 749b9a3f20SMasahiro Yamada# Read all saved command lines and dependencies for the $(targets) we 759b9a3f20SMasahiro Yamada# may be building above, using $(if_changed{,_dep}). As an 769b9a3f20SMasahiro Yamada# optimization, we don't need to read them if the target does not 779b9a3f20SMasahiro Yamada# exist, we will rebuild anyway in that case. 789b9a3f20SMasahiro Yamada 799b9a3f20SMasahiro Yamadaexisting-targets := $(wildcard $(sort $(targets))) 809b9a3f20SMasahiro Yamada 819b9a3f20SMasahiro Yamada-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 829b9a3f20SMasahiro Yamada 839b9a3f20SMasahiro Yamada.PHONY: $(PHONY) 84