[U-Boot] [PATCH] Makefile: Disable stack-usage check for ARC

[Tom Rini <trini@konsulko.com>]

On Mon, Apr 02, 2018 at 12:18:02PM +0300, Alexey Brodkin wrote:

> With the most recent tools for ARC (arc-2017.09) in case of
> "naked" function compiler throws a warning:
> ---------------------------------->8-----------------------------
> board/synopsys/hsdk/hsdk.c: In function 'hsdk_core_init_f':
> board/synopsys/hsdk/hsdk.c:345:1: warning: stack usage computation not supported for this target
>  }
>  ^
> ---------------------------------->8-----------------------------
> 
> That happens because the compiler doesn't handle "naked" functions
> as a special case where stack calculation shouldn't be done.
> 
> But for now until this is fixed in GCC to get clean buildman output
> we're disabling stack-usage check for ARC.
> 
> See https://lists.denx.de/pipermail/u-boot/2018-April/324455.html
> for more background.
> 
> Signed-off-by: Alexey Brodkin <abrodkin@synopsys.com>
> Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
> Cc: Tom Rini <trini@konsulko.com>

Erm, this patch isn't working for me.  I take the current ARC PR, and
apply this, and I still see the warning showing up.

-- 
Tom
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