1core-y += arch/x86/crypto/ 2 3ifeq ($(CONFIG_X86_32),y) 4START := 0x8048000 5 6LDFLAGS += -m elf_i386 7ELF_ARCH := i386 8ELF_FORMAT := elf32-i386 9CHECKFLAGS += -D__i386__ 10 11KBUILD_CFLAGS += $(call cc-option,-m32) 12KBUILD_AFLAGS += $(call cc-option,-m32) 13LINK-y += $(call cc-option,-m32) 14 15export LDFLAGS 16 17LDS_EXTRA := -Ui386 18export LDS_EXTRA 19 20# First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y. 21include $(srctree)/arch/x86/Makefile_32.cpu 22 23# prevent gcc from keeping the stack 16 byte aligned. Taken from i386. 24cflags-y += $(call cc-option,-mpreferred-stack-boundary=2) 25 26# Prevent sprintf in nfsd from being converted to strcpy and resulting in 27# an unresolved reference. 28cflags-y += -ffreestanding 29 30# Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use 31# a lot more stack due to the lack of sharing of stacklots. Also, gcc 32# 4.3.0 needs -funit-at-a-time for extern inline functions. 33KBUILD_CFLAGS += $(shell if [ $(call cc-version) -lt 0400 ] ; then \ 34 echo $(call cc-option,-fno-unit-at-a-time); \ 35 else echo $(call cc-option,-funit-at-a-time); fi ;) 36 37KBUILD_CFLAGS += $(cflags-y) 38 39else 40 41START := 0x60000000 42 43KBUILD_CFLAGS += -fno-builtin -m64 44 45CHECKFLAGS += -m64 -D__x86_64__ 46KBUILD_AFLAGS += -m64 47LDFLAGS += -m elf_x86_64 48KBUILD_CPPFLAGS += -m64 49 50ELF_ARCH := i386:x86-64 51ELF_FORMAT := elf64-x86-64 52 53# Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example. 54 55LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64 56LINK-y += -m64 57 58# Do unit-at-a-time unconditionally on x86_64, following the host 59KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time) 60endif 61