OSCL-LXR

0001 # SPDX-License-Identifier: GPL-2.0
0002 # Copyright 2022 Google LLC
0003
0004 KBUILD_CFLAGS   := $(subst $(CC_FLAGS_FTRACE),,$(KBUILD_CFLAGS)) -fpie \
0005                    -Os -DDISABLE_BRANCH_PROFILING $(DISABLE_STACKLEAK_PLUGIN) \
0006                    $(call cc-option,-mbranch-protection=none) \
0007                    -I$(srctree)/scripts/dtc/libfdt -fno-stack-protector \
0008                    -include $(srctree)/include/linux/hidden.h \
0009                    -D__DISABLE_EXPORTS -ffreestanding -D__NO_FORTIFY \
0010                    $(call cc-option,-fno-addrsig)
0011
0012 # remove SCS flags from all objects in this directory
0013 KBUILD_CFLAGS   := $(filter-out $(CC_FLAGS_SCS), $(KBUILD_CFLAGS))
0014 # disable LTO
0015 KBUILD_CFLAGS   := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS))
0016
0017 GCOV_PROFILE    := n
0018 KASAN_SANITIZE  := n
0019 KCSAN_SANITIZE  := n
0020 UBSAN_SANITIZE  := n
0021 KCOV_INSTRUMENT := n
0022
0023 $(obj)/%.pi.o: OBJCOPYFLAGS := --prefix-symbols=__pi_ \
0024                                --remove-section=.note.gnu.property \
0025                                --prefix-alloc-sections=.init
0026 $(obj)/%.pi.o: $(obj)/%.o FORCE
0027         $(call if_changed,objcopy)
0028
0029 $(obj)/lib-%.o: $(srctree)/lib/%.c FORCE
0030         $(call if_changed_rule,cc_o_c)
0031
0032 obj-y           := kaslr_early.pi.o lib-fdt.pi.o lib-fdt_ro.pi.o
0033 extra-y         := $(patsubst %.pi.o,%.o,$(obj-y))