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 -fno-asynchronous-unwind-tables -fno-unwind-tables \ 11 $(call cc-option,-fno-addrsig) 12 13# remove SCS flags from all objects in this directory 14KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS)) 15# disable LTO 16KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS)) 17 18GCOV_PROFILE := n 19KASAN_SANITIZE := n 20KCSAN_SANITIZE := n 21UBSAN_SANITIZE := n 22KCOV_INSTRUMENT := n 23 24$(obj)/%.pi.o: OBJCOPYFLAGS := --prefix-symbols=__pi_ \ 25 --remove-section=.note.gnu.property \ 26 --prefix-alloc-sections=.init 27$(obj)/%.pi.o: $(obj)/%.o FORCE 28 $(call if_changed,objcopy) 29 30$(obj)/lib-%.o: $(srctree)/lib/%.c FORCE 31 $(call if_changed_rule,cc_o_c) 32 33obj-y := kaslr_early.pi.o lib-fdt.pi.o lib-fdt_ro.pi.o 34extra-y := $(patsubst %.pi.o,%.o,$(obj-y)) 35