arch/x86/Makefile.um

   1 # SPDX-License-Identifier: GPL-2.0
   2 core-y += arch/x86/crypto/
   3
   4 ifeq ($(CONFIG_X86_32),y)
   5 START := 0x8048000
   6
   7 KBUILD_LDFLAGS          += -m elf_i386
   8 ELF_ARCH                := i386
   9 ELF_FORMAT              := elf32-i386
  10 CHECKFLAGS      += -D__i386__
  11
  12 KBUILD_CFLAGS           += $(call cc-option,-m32)
  13 KBUILD_AFLAGS           += $(call cc-option,-m32)
  14 LINK-y                  += $(call cc-option,-m32)
  15
  16 LDS_EXTRA               := -Ui386
  17 export LDS_EXTRA
  18
  19 # First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
  20 include arch/x86/Makefile_32.cpu
  21
  22 # prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
  23 cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
  24
  25 # Prevent sprintf in nfsd from being converted to strcpy and resulting in
  26 # an unresolved reference.
  27 cflags-y += -ffreestanding
  28
  29 KBUILD_CFLAGS += $(cflags-y)
  30
  31 else
  32
  33 START := 0x60000000
  34
  35 KBUILD_CFLAGS += -fno-builtin -m64
  36
  37 CHECKFLAGS  += -m64 -D__x86_64__
  38 KBUILD_AFLAGS += -m64
  39 KBUILD_LDFLAGS += -m elf_x86_64
  40 KBUILD_CPPFLAGS += -m64
  41
  42 ELF_ARCH := i386:x86-64
  43 ELF_FORMAT := elf64-x86-64
  44
  45 # Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example.
  46
  47 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64
  48 LINK-y += -m64
  49
  50 endif