[dpdk-dev] [PATCH] net/i40e: fix mingw build error

Tal Shnaiderman talshn at nvidia.com
Tue Jan 26 18:04:11 CET 2021


> Subject: [dpdk-dev] [PATCH] net/i40e: fix mingw build error
> 
> External email: Use caution opening links or attachments
> 
> 
> Disable i40e avx512 code path for windows build to avoid the mingw build
> error.
> 
> Fixes: e6a6a138919f ("net/i40e: add AVX512 vector path")
> 
> Signed-off-by: Leyi Rong <leyi.rong at intel.com>
> ---
>  config/x86/cross-mingw       | 3 +++
>  drivers/net/i40e/meson.build | 2 +-
>  2 files changed, 4 insertions(+), 1 deletion(-)
> 
> 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 = 'windows'
>  cpu_family = 'x86_64'
>  cpu = 'native'
>  endian = 'little'
> +
> +[properties]
> +c_args = '-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 == 'x86'
>                 cc.has_argument('-mavx512f') and
>                 cc.has_argument('-mavx512bw'))
> 
> -       if i40e_avx512_cpu_support == true or i40e_avx512_cc_support == true
> +       if not is_windows and (i40e_avx512_cpu_support == true or
> + i40e_avx512_cc_support == true)

DmitryK already mentioned it previously; you only need to disabled MinGW64 since clang isn't seeing those errors.

>                 cflags += ['-DCC_AVX512_SUPPORT']
>                 avx512_args = [cflags, '-mavx512f', '-mavx512bw']
>                 if cc.has_argument('-march=skylake-avx512')
> --
> 2.17.1



More information about the dev mailing list