[Skiboot] [PATCH] Makefile: Check -Wno-stringop-truncation is supported

[Stewart Smith]

Joel Stanley <joel at jms.id.au> writes:
> The cross compiler on my system throws a fit as it does not understand
> this option:
>
>  cc1: error: unrecognized command line option '-Wno-stringop-truncation' [-Werror]
>
> Fixes: 918b7233d3bb ("Add -Wno-stringop-truncation for GCC8")
> Signed-off-by: Joel Stanley <joel at jms.id.au>

In the grand tradition of finding old patches that aren't yet merged and
that still apply and fix a thing that somebody found was broke, merged
to master as of cd2b103f2488220fc4b05ffcb2f404d821f243aa

-- 
Stewart Smith
OPAL Architect, IBM.