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 Yamadaquiet_cmd_ar_builtin_fixup = AR $@ 149c72d26eSMasahiro Yamada cmd_ar_builtin_fixup = \ 159c72d26eSMasahiro Yamada rm -f $@; \ 169c72d26eSMasahiro Yamada $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \ 17*a48bd961SNathan Chancellor $(AR) mPi $$($(AR) t $@ | sed -n 1p) $@ $$($(AR) t $@ | grep -F -f $(srctree)/scripts/head-object-list.txt) 189c72d26eSMasahiro Yamada 199c72d26eSMasahiro Yamadatargets += built-in-fixup.a 209c72d26eSMasahiro Yamadabuilt-in-fixup.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE 219c72d26eSMasahiro Yamada $(call if_changed,ar_builtin_fixup) 229c72d26eSMasahiro Yamada 239f2aee8fSRong Xuifdef CONFIG_LTO_CLANG_THIN_DIST 249f2aee8fSRong Xu 259f2aee8fSRong Xuquiet_cmd_builtin.order = GEN $@ 269f2aee8fSRong Xu cmd_builtin.order = $(AR) t $< > $@ 279f2aee8fSRong Xu 289f2aee8fSRong Xutargets += builtin.order 299f2aee8fSRong Xubuiltin.order: built-in-fixup.a FORCE 309f2aee8fSRong Xu $(call if_changed,builtin.order) 319f2aee8fSRong Xu 329f2aee8fSRong Xuquiet_cmd_ld_thinlto_index = LD $@ 339f2aee8fSRong Xu cmd_ld_thinlto_index = \ 349f2aee8fSRong Xu $(LD) $(KBUILD_LDFLAGS) -r --thinlto-index-only=$@ @$< 359f2aee8fSRong Xu 369f2aee8fSRong Xutargets += vmlinux.thinlto-index 379f2aee8fSRong Xuvmlinux.thinlto-index: builtin.order FORCE 389f2aee8fSRong Xu $(call if_changed,ld_thinlto_index) 399f2aee8fSRong Xu 409f2aee8fSRong Xuquiet_cmd_ar_vmlinux.a = GEN $@ 419f2aee8fSRong Xu cmd_ar_vmlinux.a = \ 429f2aee8fSRong Xu rm -f $@; \ 439f2aee8fSRong Xu while read -r obj; do \ 449f2aee8fSRong Xu if grep -Fqx $${obj} $(word 2, $^); then \ 459f2aee8fSRong Xu echo $${obj%.o}.thinlto-native.o; \ 469f2aee8fSRong Xu else \ 479f2aee8fSRong Xu echo $${obj}; \ 489f2aee8fSRong Xu fi; \ 499f2aee8fSRong Xu done < $< | xargs $(AR) cDPrS --thin $@ 509f2aee8fSRong Xu 519f2aee8fSRong Xutargets += vmlinux.a 529f2aee8fSRong Xuvmlinux.a: builtin.order vmlinux.thinlto-index FORCE 539f2aee8fSRong Xu $(Q)$(MAKE) -f $(srctree)/scripts/Makefile.thinlto 549f2aee8fSRong Xu $(call if_changed,ar_vmlinux.a) 559f2aee8fSRong Xu 569f2aee8fSRong Xuelse 579f2aee8fSRong Xu 589c72d26eSMasahiro Yamada# vmlinux.a 599c72d26eSMasahiro Yamada# --------------------------------------------------------------------------- 609c72d26eSMasahiro Yamada 619c72d26eSMasahiro Yamadatargets += vmlinux.a 629c72d26eSMasahiro Yamadavmlinux.a: built-in-fixup.a FORCE 639c72d26eSMasahiro Yamada $(call if_changed,copy) 649c72d26eSMasahiro Yamada 659f2aee8fSRong Xuendif 669f2aee8fSRong Xu 679c72d26eSMasahiro Yamada# Add FORCE to the prerequisites of a target to force it to be always rebuilt. 689c72d26eSMasahiro Yamada# --------------------------------------------------------------------------- 699c72d26eSMasahiro Yamada 709c72d26eSMasahiro YamadaPHONY += FORCE 719c72d26eSMasahiro YamadaFORCE: 729c72d26eSMasahiro Yamada 739c72d26eSMasahiro Yamada# Read all saved command lines and dependencies for the $(targets) we 749c72d26eSMasahiro Yamada# may be building above, using $(if_changed{,_dep}). As an 759c72d26eSMasahiro Yamada# optimization, we don't need to read them if the target does not 769c72d26eSMasahiro Yamada# exist, we will rebuild anyway in that case. 779c72d26eSMasahiro Yamada 789c72d26eSMasahiro Yamadaexisting-targets := $(wildcard $(sort $(targets))) 799c72d26eSMasahiro Yamada 809c72d26eSMasahiro Yamada-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 819c72d26eSMasahiro Yamada 829c72d26eSMasahiro Yamada.PHONY: $(PHONY) 83