Re: [RFC PATCH] kbuild: add -fno-PIE

[Sebastian Andrzej Siewior]

On 2016-10-27 11:09:06 [-0600], Shuah Khan wrote:
> diff --git a/Makefile b/Makefile
> index 82a36ab..0a01ad1 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -651,6 +651,11 @@ ifneq ($(CONFIG_FRAME_WARN),0)
>  KBUILD_CFLAGS += $(call cc-option,-Wframe-larger-than=${CONFIG_FRAME_WARN})
>  endif
> 
> +# force no-pie for distro compilers that enable pie by default
> +KBUILD_CFLAGS += $(call cc-option, -fno-pie)
> +KBUILD_CFLAGS += $(call cc-option, -no-pie)

so why do we need -no-pie? What is different from -fno-pie

> +KBUILD_AFLAGS += $(call cc-option, -fno-pie)

Why do need to pass this to the assembler? Is this for the
fstack-protector?

> 
> thanks,
> -- Shuah

Sebastian