1 # SPDX-License-Identifier: GPL-2.0
2 core-y += arch/x86/crypto/
5 # Disable SSE and other FP/SIMD instructions to match normal x86
6 # This is required to work around issues in older LLVM versions, but breaks
7 # GCC versions < 11. See:
8 # https://gcc.gnu.org/bugzilla/show_bug.cgi?id=99652
10 ifeq ($(CONFIG_CC_IS_CLANG),y)
11 KBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow -mno-avx
12 KBUILD_RUSTFLAGS += --target=$(objtree)/scripts/target.json
13 KBUILD_RUSTFLAGS += -Ctarget-feature=-sse,-sse2,-sse3,-ssse3,-sse4.1,-sse4.2,-avx,-avx2
16 ifeq ($(CONFIG_X86_32),y)
19 KBUILD_LDFLAGS += -m elf_i386
21 ELF_FORMAT := elf32-i386
22 CHECKFLAGS += -D__i386__
24 KBUILD_CFLAGS += $(call cc-option,-m32)
25 KBUILD_AFLAGS += $(call cc-option,-m32)
26 LINK-y += $(call cc-option,-m32)
31 # First of all, tune CFLAGS for the specific CPU. This actually sets cflags-y.
32 include $(srctree)/arch/x86/Makefile_32.cpu
34 # prevent gcc from keeping the stack 16 byte aligned. Taken from i386.
35 cflags-y += $(call cc-option,-mpreferred-stack-boundary=2)
37 # Prevent sprintf in nfsd from being converted to strcpy and resulting in
38 # an unresolved reference.
39 cflags-y += -ffreestanding
41 KBUILD_CFLAGS += $(cflags-y)
47 KBUILD_CFLAGS += -fno-builtin -m64
49 CHECKFLAGS += -m64 -D__x86_64__
51 KBUILD_LDFLAGS += -m elf_x86_64
52 KBUILD_CPPFLAGS += -m64
54 ELF_ARCH := i386:x86-64
55 ELF_FORMAT := elf64-x86-64
57 # Not on all 64-bit distros /lib is a symlink to /lib64. PLD is an example.
59 LINK-$(CONFIG_LD_SCRIPT_DYN_RPATH) += -Wl,-rpath,/lib64