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From: Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>
To: Eli Britstein <elibr@nvidia.com>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "thomas@monjalon.net" <thomas@monjalon.net>,
	Asaf Penso <asafp@nvidia.com>,
	David Marchand <david.marchand@redhat.com>, nd <nd@arm.com>,
	Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>,
	nd <nd@arm.com>
Subject: Re: [dpdk-dev] [PATCH V2 1/1] eal: fix build with conflicting libc	variable memory_order
Date: Thu, 15 Oct 2020 16:46:10 +0000
Message-ID: <DBAPR08MB58144FDDA49889B4D5B90F1198020@DBAPR08MB5814.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <20201015151017.8060-1-elibr@nvidia.com>


> The cited commit introduced functions with 'int memory_order' argument.
> The C11 standard section defines 'memory_order' as the
> "enumerated type whose enumerators identify memory ordering
> constraints".
> A compilation error occurs:
> error: declaration of 'memory_order' shadows a global declaration
>     [-Werror=shadow]
>      rte_atomic_thread_fence(int memory_order)
> This issue was hit when trying to compile OVS with gcc 4.8.5. This compiler
> version does not provide stdatomic.h, so enum memory_order is redefined
> in OVS code.
> In another case, if the compiler does provide stdatomic.h header, passing -
> Wsystem-headers in the CFLAGS will also cause that failure.
> Fix it by changing the argument name 'memory_order' to 'memorder'.
> Fixes: 672a15056380 ("eal: add wrapper for C11 atomic thread fence")
> Signed-off-by: Eli Britstein <elibr@nvidia.com>
Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>

We are missing the earlier ACKs.


  reply	other threads:[~2020-10-15 16:46 UTC|newest]

Thread overview: 3+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-10-15 15:10 Eli Britstein
2020-10-15 16:46 ` Honnappa Nagarahalli [this message]
2020-10-15 16:49 ` David Marchand

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