1# SPDX-License-Identifier: GPL-2.0-only 2 3PHONY := __default 4__default: vmlinux.a 5 6include include/config/auto.conf 7include $(srctree)/scripts/Kbuild.include 8include $(srctree)/scripts/Makefile.lib 9 10# Link of built-in-fixup.a 11# --------------------------------------------------------------------------- 12 13# '$(AR) mPi' needs 'T' to workaround the bug of llvm-ar <= 14 14quiet_cmd_ar_builtin_fixup = AR $@ 15 cmd_ar_builtin_fixup = \ 16 rm -f $@; \ 17 $(AR) cDPrST $@ $(KBUILD_VMLINUX_OBJS); \ 18 $(AR) mPiT $$($(AR) t $@ | sed -n 1p) $@ $$($(AR) t $@ | grep -F -f $(srctree)/scripts/head-object-list.txt) 19 20targets += built-in-fixup.a 21built-in-fixup.a: $(KBUILD_VMLINUX_OBJS) scripts/head-object-list.txt FORCE 22 $(call if_changed,ar_builtin_fixup) 23 24# vmlinux.a 25# --------------------------------------------------------------------------- 26 27targets += vmlinux.a 28vmlinux.a: built-in-fixup.a FORCE 29 $(call if_changed,copy) 30 31# Add FORCE to the prerequisites of a target to force it to be always rebuilt. 32# --------------------------------------------------------------------------- 33 34PHONY += FORCE 35FORCE: 36 37# Read all saved command lines and dependencies for the $(targets) we 38# may be building above, using $(if_changed{,_dep}). As an 39# optimization, we don't need to read them if the target does not 40# exist, we will rebuild anyway in that case. 41 42existing-targets := $(wildcard $(sort $(targets))) 43 44-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd) 45 46.PHONY: $(PHONY) 47