Commit 9fcb51c1 authored Mar 23, 2021 by Arnd Bergmann Committed by Ingo Molnar Mar 23, 2021

x86/build: Turn off -fcf-protection for realmode targets



The new Ubuntu GCC packages turn on -fcf-protection globally,
which causes a build failure in the x86 realmode code:

  cc1: error: ‘-fcf-protection’ is not compatible with this target

Turn it off explicitly on compilers that understand this option.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Link: https://lore.kernel.org/r/20210323124846.1584944-1-arnd@kernel.org

parent 8249d17d

arch/x86/Makefile

+1 −1

Original line number	Diff line number	Diff line
		@@ -27,7 +27,7 @@ endif
		REALMODE_CFLAGS := -m16 -g -Os -DDISABLE_BRANCH_PROFILING \
		-Wall -Wstrict-prototypes -march=i386 -mregparm=3 \
		-fno-strict-aliasing -fomit-frame-pointer -fno-pic \
		-mno-mmx -mno-sse
		-mno-mmx -mno-sse $(call cc-option,-fcf-protection=none)

		REALMODE_CFLAGS += -ffreestanding
		REALMODE_CFLAGS += -fno-stack-protector