1 # SPDX-License-Identifier: GPL-2.0
2 core-y += arch/x86/crypto/
4 ifeq ($(CONFIG_X86_32),y)
9 ELF_FORMAT := elf32-i386
10 CHECKFLAGS += -D__i386__
12 KBUILD_CFLAGS += $(call cc-option,-m32)
13 KBUILD_AFLAGS += $(call cc-option,-m32)
14 LINK-y += $(call cc-option,-m32)
21 # First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
22 include arch/x86/Makefile_32.cpu
24 # prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
25 cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
27 # Prevent sprintf in nfsd from being converted to strcpy and resulting in
28 # an unresolved reference.
29 cflags-y += -ffreestanding
31 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
32 # a lot more stack due to the lack of sharing of stacklots. Also, gcc
33 # 4.3.0 needs -funit-at-a-time for extern inline functions.
34 KBUILD_CFLAGS += $(shell if [ $(cc-version) -lt 0400 ] ; then \
35 echo $(call cc-option,-fno-unit-at-a-time); \
36 else echo $(call cc-option,-funit-at-a-time); fi ;)
38 KBUILD_CFLAGS += $(cflags-y)
44 KBUILD_CFLAGS += -fno-builtin -m64
46 CHECKFLAGS += -m64 -D__x86_64__
48 LDFLAGS += -m elf_x86_64
49 KBUILD_CPPFLAGS += -m64
51 ELF_ARCH := i386:x86-64
52 ELF_FORMAT := elf64-x86-64
54 # Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example.
56 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64
59 # Do unit-at-a-time unconditionally on x86_64, following the host
60 KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)