| # SPDX-License-Identifier: GPL-2.0 |
| # Copyright 2022 Google LLC |
| |
| KBUILD_CFLAGS := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) -fpie \ |
| -Os -DDISABLE_BRANCH_PROFILING $(DISABLE_STACKLEAK_PLUGIN) \ |
| $(DISABLE_LATENT_ENTROPY_PLUGIN) \ |
| $(call cc-option,-mbranch-protection=none) \ |
| -I$(srctree)/scripts/dtc/libfdt -fno-stack-protector \ |
| -include $(srctree)/include/linux/hidden.h \ |
| -D__DISABLE_EXPORTS -ffreestanding -D__NO_FORTIFY \ |
| -fno-asynchronous-unwind-tables -fno-unwind-tables \ |
| $(call cc-option,-fno-addrsig) |
| |
| # remove SCS flags from all objects in this directory |
| KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS)) |
| # disable LTO |
| KBUILD_CFLAGS := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS)) |
| |
| GCOV_PROFILE := n |
| KASAN_SANITIZE := n |
| KCSAN_SANITIZE := n |
| UBSAN_SANITIZE := n |
| KCOV_INSTRUMENT := n |
| |
| $(obj)/%.pi.o: OBJCOPYFLAGS := --prefix-symbols=__pi_ \ |
| --remove-section=.note.gnu.property \ |
| --prefix-alloc-sections=.init |
| $(obj)/%.pi.o: $(obj)/%.o FORCE |
| $(call if_changed,objcopy) |
| |
| $(obj)/lib-%.o: $(srctree)/lib/%.c FORCE |
| $(call if_changed_rule,cc_o_c) |
| |
| obj-y := kaslr_early.pi.o lib-fdt.pi.o lib-fdt_ro.pi.o |
| extra-y := $(patsubst %.pi.o,%.o,$(obj-y)) |
