Re: [dpdk-dev] [PATCH] build: set -mfpu=neon flag for armv7a builds

[Christian Ehrhardt <christian.ehrhardt@canonical.com>]

On Thu, Nov 15, 2018 at 5:54 PM Luca Boccassi <bluca@debian.org> wrote:
>
> Building on armv7a with meson currenctly fails:
>
> /usr/lib/gcc/arm-linux-gnueabihf/8/include/arm_neon.h:10369:1: error:
>     inlining failed in call to always_inline ‘vld1q_s32’: target
>     specific option mismatch
>
> Set -mfpu=neon on that architecture like the legacy makefiles do to fix
> the issue.
>
> Fixes: b1d48c41189a ("build: support ARM with meson")
> Cc: stable@dpdk.org
>
> Signed-off-by: Luca Boccassi <bluca@debian.org>

Acked-by: Christian Ehrhardt <christian.ehrhardt@canonical.com>

> ---
>  config/arm/meson.build | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/config/arm/meson.build b/config/arm/meson.build
> index 4b23b3954..b75513855 100644
> --- a/config/arm/meson.build
> +++ b/config/arm/meson.build
> @@ -89,6 +89,9 @@ if cc.sizeof('void *') != 8
>         dpdk_conf.set('RTE_CACHE_LINE_SIZE', 64)
>         dpdk_conf.set('RTE_ARCH_ARM', 1)
>         dpdk_conf.set('RTE_ARCH_ARMv7', 1)
> +       # the minimum architecture supported, armv7-a, needs the following,
> +       # mk/machine/armv7a/rte.vars.mk sets it too
> +       machine_args += '-mfpu=neon'
>  else
>         dpdk_conf.set('RTE_CACHE_LINE_SIZE', 128)
>         dpdk_conf.set('RTE_ARCH_ARM64', 1)
> --
> 2.19.1
>


-- 
Christian Ehrhardt
Software Engineer, Ubuntu Server
Canonical Ltd