Re: PROBLEM: 5.11.0-rc7 fails to compile with error: ‘-mindirect-branch’ and ‘-fcf-protection’ are not compatible
From: AC <hidden>
Date: 2021-02-08 16:59:41
Also in:
lkml
That did fix it, thank you! On February 8, 2021 7:12:27 AM EST, Borislav Petkov [off-list ref] wrote:
quoted hunk ↗ jump to hunk
On Sun, Feb 07, 2021 at 07:40:32PM -0500, Stuart Little wrote:quoted
quoted
On Sun, Feb 07, 2021 at 06:31:22PM -0500, Stuart Little wrote:quoted
I am trying to compile on an x86_64 host for a 32-bit system; myconfig is atquoted
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https://termbin.com/v8jl I am getting numerous errors of the form ./include/linux/kasan-checks.h:17:1: error: ‘-mindirect-branch’and ‘-fcf-protection’ are not compatible Does this fix it? ---diff --git a/arch/x86/Makefile b/arch/x86/Makefile index 5857917f83ee..30920d70b48b 100644 --- a/arch/x86/Makefile +++ b/arch/x86/Makefile@@ -50,6 +50,9 @@ export BITSKBUILD_CFLAGS += -mno-sse -mno-mmx -mno-sse2 -mno-3dnow KBUILD_CFLAGS += $(call cc-option,-mno-avx,) +# Intel CET isn't enabled in the kernel +KBUILD_CFLAGS += $(call cc-option,-fcf-protection=none) + ifeq ($(CONFIG_X86_32),y) BITS := 32 UTS_MACHINE := i386@@ -120,9 +123,6 @@ else KBUILD_CFLAGS += -mno-red-zone KBUILD_CFLAGS += -mcmodel=kernel - - # Intel CET isn't enabled in the kernel - KBUILD_CFLAGS += $(call cc-option,-fcf-protection=none)endif ifdef CONFIG_X86_X32