1# SPDX-License-Identifier: GPL-2.0 2# Copyright 2022 Google LLC 3 4KBUILD_CFLAGS := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) -fpie \ 5 -Os -DDISABLE_BRANCH_PROFILING $(DISABLE_STACKLEAK_PLUGIN) \ 6 $(call cc-option,-mbranch-protection=none) \ 7 -I$(srctree)/scripts/dtc/libfdt -fno-stack-protector \ 8 -include $(srctree)/include/linux/hidden.h \ 9 -D__DISABLE_EXPORTS -ffreestanding -D__NO_FORTIFY \ 10 $(call cc-option,-fno-addrsig) 11 12# remove SCS flags from all objects in this directory 13KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS)) 14# disable LTO 15KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS)) 16 17GCOV_PROFILE := n 18KASAN_SANITIZE := n 19KCSAN_SANITIZE := n 20UBSAN_SANITIZE := n 21KCOV_INSTRUMENT := n 22 23$(obj)/%.pi.o: OBJCOPYFLAGS := --prefix-symbols=__pi_ \ 24 --remove-section=.note.gnu.property \ 25 --prefix-alloc-sections=.init 26$(obj)/%.pi.o: $(obj)/%.o FORCE 27 $(call if_changed,objcopy) 28 29$(obj)/lib-%.o: $(srctree)/lib/%.c FORCE 30 $(call if_changed_rule,cc_o_c) 31 32obj-y := kaslr_early.pi.o lib-fdt.pi.o lib-fdt_ro.pi.o 33extra-y := $(patsubst %.pi.o,%.o,$(obj-y)) 34