1 # SPDX-License-Identifier: GPL-2.0
2 core-y += arch/x86/crypto/
4 ifeq ($(CONFIG_X86_32),y)
7 KBUILD_LDFLAGS += -m elf_i386
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)
19 # First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
20 include arch/x86/Makefile_32.cpu
22 # prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
23 cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
25 # Prevent sprintf in nfsd from being converted to strcpy and resulting in
26 # an unresolved reference.
27 cflags-y += -ffreestanding
29 # Disable unit-at-a-time mode on pre-gcc-4.0 compilers, it makes gcc use
30 # a lot more stack due to the lack of sharing of stacklots. Also, gcc
31 # 4.3.0 needs -funit-at-a-time for extern inline functions.
32 KBUILD_CFLAGS += $(shell if [ $(cc-version) -lt 0400 ] ; then \
33 echo $(call cc-option,-fno-unit-at-a-time); \
34 else echo $(call cc-option,-funit-at-a-time); fi ;)
36 KBUILD_CFLAGS += $(cflags-y)
42 KBUILD_CFLAGS += -fno-builtin -m64
44 CHECKFLAGS += -m64 -D__x86_64__
46 KBUILD_LDFLAGS += -m elf_x86_64
47 KBUILD_CPPFLAGS += -m64
49 ELF_ARCH := i386:x86-64
50 ELF_FORMAT := elf64-x86-64
52 # Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example.
54 LINK-$(CONFIG_LD_SCRIPT_DYN) += -Wl,-rpath,/lib64
57 # Do unit-at-a-time unconditionally on x86_64, following the host
58 KBUILD_CFLAGS += $(call cc-option,-funit-at-a-time)