From mboxrd@z Thu Jan  1 00:00:00 1970
From: David Marchand <david.marchand@6wind.com>
Subject: Re: [PATCH v3 13/17] gcc/arm: avoid alignment errors to
	break build
Date: Wed, 28 Oct 2015 13:16:24 +0100
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Cc: "dev@dpdk.org" <dev@dpdk.org>, Vlastimil Kosar <kosar@rehivetech.com>
To: Jan Viktorin <viktorin@rehivetech.com>
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On Tue, Oct 27, 2015 at 8:13 PM, Jan Viktorin <viktorin@rehivetech.com>
wrote:

> There several issues with alignment when compiling for ARMv7.
> They are not considered to be fatal (ARMv7 supports unaligned
> access of 32b words), so we just leave them as warnings. They
> should be solved later, however.
>
> Signed-off-by: Jan Viktorin <viktorin@rehivetech.com>
> Signed-off-by: Vlastimil Kosar <kosar@rehivetech.com>
> ---
>  mk/toolchain/gcc/rte.vars.mk | 6 ++++++
>  1 file changed, 6 insertions(+)
>
> diff --git a/mk/toolchain/gcc/rte.vars.mk b/mk/toolchain/gcc/rte.vars.mk
> index 0f51c66..8f9c396 100644
> --- a/mk/toolchain/gcc/rte.vars.mk
> +++ b/mk/toolchain/gcc/rte.vars.mk
> @@ -77,6 +77,12 @@ WERROR_FLAGS += -Wcast-align -Wnested-externs
> -Wcast-qual
>  WERROR_FLAGS += -Wformat-nonliteral -Wformat-security
>  WERROR_FLAGS += -Wundef -Wwrite-strings
>
> +# There are many issues reported for ARMv7 architecture
> +# which are not necessarily fatal. Report as warnings.
> +ifeq ($(CONFIG_RTE_ARCH_ARMv7),y)
> +WERROR_FLAGS += -Wno-error
> +endif
> +
>

Can we disable only "known" problems ?

Something like :
WERROR_FLAGS += -Wno-error=cast-align


-- 
David Marchand