arch/riscv/kernel/pi/Makefile

   1 # SPDX-License-Identifier: GPL-2.0
   2 # This file was copied from arm64/kernel/pi/Makefile.
   3
   4 KBUILD_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 \
  10                    -fno-asynchronous-unwind-tables -fno-unwind-tables \
  11                    $(call cc-option,-fno-addrsig)
  12
  13 # Disable LTO
  14 KBUILD_CFLAGS   := $(filter-out $(CC_FLAGS_LTO), $(KBUILD_CFLAGS))
  15
  16 KBUILD_CFLAGS   += -mcmodel=medany
  17
  18 CFLAGS_cmdline_early.o += -D__NO_FORTIFY
  19 CFLAGS_fdt_early.o += -D__NO_FORTIFY
  20 # lib/string.c already defines __NO_FORTIFY
  21 CFLAGS_ctype.o += -D__NO_FORTIFY
  22 CFLAGS_lib-fdt.o += -D__NO_FORTIFY
  23 CFLAGS_lib-fdt_ro.o += -D__NO_FORTIFY
  24 CFLAGS_archrandom_early.o += -D__NO_FORTIFY
  25
  26 $(obj)/%.pi.o: OBJCOPYFLAGS := --prefix-symbols=__pi_ \
  27                                --remove-section=.note.gnu.property \
  28                                --prefix-alloc-sections=.init.pi
  29 $(obj)/%.pi.o: $(obj)/%.o FORCE
  30         $(call if_changed,objcopy)
  31
  32 $(obj)/lib-%.o: $(srctree)/lib/%.c FORCE
  33         $(call if_changed_rule,cc_o_c)
  34
  35 $(obj)/string.o: $(srctree)/lib/string.c FORCE
  36         $(call if_changed_rule,cc_o_c)
  37
  38 $(obj)/ctype.o: $(srctree)/lib/ctype.c FORCE
  39         $(call if_changed_rule,cc_o_c)
  40
  41 obj-y           := cmdline_early.pi.o fdt_early.pi.o string.pi.o ctype.pi.o lib-fdt.pi.o lib-fdt_ro.pi.o archrandom_early.pi.o
  42 extra-y         := $(patsubst %.pi.o,%.o,$(obj-y))