[Buildroot] [PATCH] Config.in: disable Fortify Source for microblaze

[Arnout Vandecappelle]

On 21/08/2021 00:53, Romain Naour wrote:
> As reported by Toolchain-builder project [1], the system doesn't
> boot when Fortify Source is enabled for glibc based toolchain
> (the init process hang).
> 
> Also, hardening features may not be wanted or possible for such
> slow soft-core cpus [2].
> 
> [1] https://gitlab.com/bootlin/toolchains-builder/-/jobs/1467624500
> [2] http://lists.busybox.net/pipermail/buildroot/2021-June/312416.html
> 
> Signed-off-by: Romain Naour <romain.naour at gmail.com>
> Cc: Thomas Petazzoni <thomas.petazzoni at bootlin.com>
> Cc: Giulio Benetti <giulio.benetti at benettiengineering.com>

 Applied to master, thanks. I reworded the commit message to avoid Giulio's
confusion.

 Also, I added a dependency on BR2_FORTIFY_SOURCE_ARCH_SUPPORTS in the comment
that glibc and optimisation are needed.

 Regards,
 Arnout

> ---
> With BR2_RELRO_PARTIAL enabled, the system boot.
> ---
>  Config.in | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/Config.in b/Config.in
> index 2ef5d407e4..84f7fa6e8d 100644
> --- a/Config.in
> +++ b/Config.in
> @@ -853,9 +853,16 @@ endchoice
>  comment "RELocation Read Only (RELRO) needs shared libraries"
>  	depends on !BR2_SHARED_LIBS
>  
> +config BR2_FORTIFY_SOURCE_ARCH_SUPPORTS
> +	bool
> +	default y
> +	# Microblaze glibc toolchains don't work with Fortify Source enabled
> +	depends on !BR2_microblaze
> +
>  choice
>  	bool "Buffer-overflow Detection (FORTIFY_SOURCE)"
>  	default BR2_FORTIFY_SOURCE_1
> +	depends on BR2_FORTIFY_SOURCE_ARCH_SUPPORTS
>  	depends on BR2_TOOLCHAIN_USES_GLIBC
>  	depends on !BR2_OPTIMIZE_0
>  	help
>