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From: "Wang, Zhihong" <zhihong.wang@intel.com>
To: "Qiu, Michael" <michael.qiu@intel.com>
Thread-Topic: [PATCH] lib/librte_eal: Fix compile issue with gcc 5.3.1
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Date: Thu, 28 Jan 2016 08:01:17 +0000
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Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH] lib/librte_eal: Fix compile issue with gcc
	5.3.1
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> Subject: [PATCH] lib/librte_eal: Fix compile issue with gcc 5.3.1
>=20
> In fedora 22 with GCC version 5.3.1, when compile,
> will result an error:
>=20
>     include/rte_memcpy.h:309:7: error: "RTE_MACHINE_CPUFLAG_AVX2"
>                                 is not defined [-Werror=3Dundef]
>     #elif RTE_MACHINE_CPUFLAG_AVX2
>=20
> Fixes: 9484092baad3 ("eal/x86: optimize memcpy for AVX512 platforms")
>=20
> Signed-off-by: Michael Qiu <michael.qiu@intel.com>
> ---
>  app/test/test_memcpy_perf.c                         | 2 +-
>  lib/librte_eal/common/include/arch/x86/rte_memcpy.h | 2 +-
>  2 files changed, 2 insertions(+), 2 deletions(-)


There's issue in the original code.

#elif works with statements:
#elif < statement: true or false>

But what it meant is whether the identifier has been defined:
#elif defined <identifier>

Thanks for correcting this!

Acked-by: Wang, Zhihong <zhihong.wang@intel.com>