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From: "Kavanagh, Mark B" <mark.b.kavanagh@intel.com>
To: "dev@dpdk.org" <dev@dpdk.org>
Thread-Topic: rte_memcpy.h: additional cflags required with OVS
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Date: Mon, 9 Mar 2015 16:44:06 +0000
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Subject: [dpdk-dev] rte_memcpy.h: additional cflags required with OVS
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Hi,

Compilation of Open vSwitch fails when linked against current HEAD of DPDK =
(f2552cd5).

The source of this issue appears to be commit ID 9144d6b: "eal/x86: optimiz=
e memcpy for SSE and AVX", and can be resolved by passing an additional arg=
ument to OVS when building same (CFLAGS=3D"-march=3Dnative").
It seems that without this flag, OVS doesn't pick up one or more SSE #defin=
es in DPDK, and doesn't include a relevant intrinsic header (emmintrin.h), =
leading to an 'implicit declaration' error for instrinsic '_mm_storeu_si128=
'.

Has anyone else observed this behavior?

Thanks,
Mark