19c72d26eSMasahiro Yamada# SPDX-License-Identifier: GPL-2.0-only 29c72d26eSMasahiro Yamada 39c72d26eSMasahiro YamadaPHONY := __default 49c72d26eSMasahiro Yamada__default: vmlinux.a 59c72d26eSMasahiro Yamada 69c72d26eSMasahiro Yamadainclude include/config/auto.conf 79c72d26eSMasahiro Yamadainclude $(srctree)/scripts/Kbuild.include 89c72d26eSMasahiro Yamadainclude $(srctree)/scripts/Makefile.lib 99c72d26eSMasahiro Yamada 109c72d26eSMasahiro Yamada# Link of built-in-fixup.a 119c72d26eSMasahiro Yamada# --------------------------------------------------------------------------- 129c72d26eSMasahiro Yamada 139c72d26eSMasahiro Yamada# '$(AR) mPi' needs 'T' to workaround the bug of llvm-ar <= 14 149c72d26eSMasahiro Yamadaquiet_cmd_ar_builtin_fixup = AR $@ 159c72d26eSMasahiro Yamada cmd_ar_builtin_fixup = \ 169c72d26eSMasahiro Yamada rm -f $@; \ 179c72d26eSMasahiro Yamada $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \ 189c72d26eSMasahiro Yamada $(AR) mPiT $$($(AR) t $@ | sed -n 1p) $@ $$($(AR) t $@ | grep -F -f $(srctree)/scripts/head-object-list.txt) 199c72d26eSMasahiro Yamada 209c72d26eSMasahiro Yamadatargets += built-in-fixup.a 219c72d26eSMasahiro Yamadabuilt-in-fixup.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE 229c72d26eSMasahiro Yamada $(call if_changed,ar_builtin_fixup) 239c72d26eSMasahiro Yamada 24*9f2aee8fSRong Xuifdef CONFIG_LTO_CLANG_THIN_DIST 25*9f2aee8fSRong Xu 26*9f2aee8fSRong Xuquiet_cmd_builtin.order = GEN $@ 27*9f2aee8fSRong Xu cmd_builtin.order = $(AR) t $< > $@ 28*9f2aee8fSRong Xu 29*9f2aee8fSRong Xutargets += builtin.order 30*9f2aee8fSRong Xubuiltin.order: built-in-fixup.a FORCE 31*9f2aee8fSRong Xu $(call if_changed,builtin.order) 32*9f2aee8fSRong Xu 33*9f2aee8fSRong Xuquiet_cmd_ld_thinlto_index = LD $@ 34*9f2aee8fSRong Xu cmd_ld_thinlto_index = \ 35*9f2aee8fSRong Xu $(LD) $(KBUILD_LDFLAGS) -r --thinlto-index-only=$@ @$< 36*9f2aee8fSRong Xu 37*9f2aee8fSRong Xutargets += vmlinux.thinlto-index 38*9f2aee8fSRong Xuvmlinux.thinlto-index: builtin.order FORCE 39*9f2aee8fSRong Xu $(call if_changed,ld_thinlto_index) 40*9f2aee8fSRong Xu 41*9f2aee8fSRong Xuquiet_cmd_ar_vmlinux.a = GEN $@ 42*9f2aee8fSRong Xu cmd_ar_vmlinux.a = \ 43*9f2aee8fSRong Xu rm -f $@; \ 44*9f2aee8fSRong Xu while read -r obj; do \ 45*9f2aee8fSRong Xu if grep -Fqx $${obj} $(word 2, $^); then \ 46*9f2aee8fSRong Xu echo $${obj%.o}.thinlto-native.o; \ 47*9f2aee8fSRong Xu else \ 48*9f2aee8fSRong Xu echo $${obj}; \ 49*9f2aee8fSRong Xu fi; \ 50*9f2aee8fSRong Xu done < $< | xargs $(AR) cDPrS --thin $@ 51*9f2aee8fSRong Xu 52*9f2aee8fSRong Xutargets += vmlinux.a 53*9f2aee8fSRong Xuvmlinux.a: builtin.order vmlinux.thinlto-index FORCE 54*9f2aee8fSRong Xu $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.thinlto 55*9f2aee8fSRong Xu $(call if_changed,ar_vmlinux.a) 56*9f2aee8fSRong Xu 57*9f2aee8fSRong Xuelse 58*9f2aee8fSRong Xu 599c72d26eSMasahiro Yamada# vmlinux.a 609c72d26eSMasahiro Yamada# --------------------------------------------------------------------------- 619c72d26eSMasahiro Yamada 629c72d26eSMasahiro Yamadatargets += vmlinux.a 639c72d26eSMasahiro Yamadavmlinux.a: built-in-fixup.a FORCE 649c72d26eSMasahiro Yamada $(call if_changed,copy) 659c72d26eSMasahiro Yamada 66*9f2aee8fSRong Xuendif 67*9f2aee8fSRong Xu 689c72d26eSMasahiro Yamada# Add FORCE to the prerequisites of a target to force it to be always rebuilt. 699c72d26eSMasahiro Yamada# --------------------------------------------------------------------------- 709c72d26eSMasahiro Yamada 719c72d26eSMasahiro YamadaPHONY += FORCE 729c72d26eSMasahiro YamadaFORCE: 739c72d26eSMasahiro Yamada 749c72d26eSMasahiro Yamada# Read all saved command lines and dependencies for the $(targets) we 759c72d26eSMasahiro Yamada# may be building above, using $(if_changed{,_dep}). As an 769c72d26eSMasahiro Yamada# optimization, we don't need to read them if the target does not 779c72d26eSMasahiro Yamada# exist, we will rebuild anyway in that case. 789c72d26eSMasahiro Yamada 799c72d26eSMasahiro Yamadaexisting-targets := $(wildcard $(sort $(targets))) 809c72d26eSMasahiro Yamada 819c72d26eSMasahiro Yamada-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 829c72d26eSMasahiro Yamada 839c72d26eSMasahiro Yamada.PHONY: $(PHONY) 84