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From: Tal Shnaiderman <talshn@nvidia.com>
To: Leyi Rong <leyi.rong@intel.com>, "qi.z.zhang@intel.com"
<qi.z.zhang@intel.com>, "pallavi.kadam@intel.com" <pallavi.kadam@intel.com>,
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CC: "dev@dpdk.org" <dev@dpdk.org>
Thread-Topic: [dpdk-dev] [PATCH] net/i40e: fix mingw build error
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Date: Tue, 26 Jan 2021 17:04:11 +0000
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References: <20210126153819.63625-1-leyi.rong@intel.com>
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Subject: Re: [dpdk-dev] [PATCH] net/i40e: fix mingw build error
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> Subject: [dpdk-dev] [PATCH] net/i40e: fix mingw build error
>=20
> External email: Use caution opening links or attachments
>=20
>=20
> Disable i40e avx512 code path for windows build to avoid the mingw build
> error.
>=20
> Fixes: e6a6a138919f ("net/i40e: add AVX512 vector path")
>=20
> Signed-off-by: Leyi Rong <leyi.rong@intel.com>
> ---
> config/x86/cross-mingw | 3 +++
> drivers/net/i40e/meson.build | 2 +-
> 2 files changed, 4 insertions(+), 1 deletion(-)
>=20
> diff --git a/config/x86/cross-mingw b/config/x86/cross-mingw index
> 4c15a7fa2e..48a82b457e 100644
> --- a/config/x86/cross-mingw
> +++ b/config/x86/cross-mingw
> @@ -11,3 +11,6 @@ system =3D 'windows'
> cpu_family =3D 'x86_64'
> cpu =3D 'native'
> endian =3D 'little'
> +
> +[properties]
> +c_args =3D '-mno-avx512f'
Should be in a different patch since it effects the whole project.
> diff --git a/drivers/net/i40e/meson.build b/drivers/net/i40e/meson.build
> index c0acdf4fd4..c9a1a50407 100644
> --- a/drivers/net/i40e/meson.build
> +++ b/drivers/net/i40e/meson.build
> @@ -54,7 +54,7 @@ if arch_subdir =3D=3D 'x86'
> cc.has_argument('-mavx512f') and
> cc.has_argument('-mavx512bw'))
>=20
> - if i40e_avx512_cpu_support =3D=3D true or i40e_avx512_cc_support =
=3D=3D true
> + if not is_windows and (i40e_avx512_cpu_support =3D=3D true or
> + i40e_avx512_cc_support =3D=3D true)
DmitryK already mentioned it previously; you only need to disabled MinGW64 =
since clang isn't seeing those errors.
> cflags +=3D ['-DCC_AVX512_SUPPORT']
> avx512_args =3D [cflags, '-mavx512f', '-mavx512bw']
> if cc.has_argument('-march=3Dskylake-avx512')
> --
> 2.17.1