x86/boot: Compile boot code with -std=gnu11 too

Use -std=gnu11 for consistency with main kernel code.

It doesn't seem to change anything in vmlinux.

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Acked-by: H. Peter Anvin (Intel) <hpa@zytor.com>
Link: https://lore.kernel.org/r/2058761e-12a4-4b2f-9690-3c3c1c9902a5@p183

diff --git a/arch/x86/Makefile b/arch/x86/Makefile
index 5bfe5caaa444b3faf5f6b4c06d98e22bc7e76586..776331f3f9c30813503e076911b80efcaf627360 100644 (file)
--- a/arch/x86/Makefile
+++ b/arch/x86/Makefile
@@ -43,7 +43,7 @@ endif
 
 # How to compile the 16-bit code.  Note we always compile for -march=i386;
 # that way we can complain to the user if the CPU is insufficient.
-REALMODE_CFLAGS        := -m16 -g -Os -DDISABLE_BRANCH_PROFILING -D__DISABLE_EXPORTS \
+REALMODE_CFLAGS        := -std=gnu11 -m16 -g -Os -DDISABLE_BRANCH_PROFILING -D__DISABLE_EXPORTS \
                   -Wall -Wstrict-prototypes -march=i386 -mregparm=3 \
                   -fno-strict-aliasing -fomit-frame-pointer -fno-pic \
                   -mno-mmx -mno-sse $(call cc-option,-fcf-protection=none)