> -----Original Message-----
> From: Honnappa Nagarahalli <honnappa.nagaraha...@arm.com>
> Sent: Wednesday, August 22, 2018 11:01 PM
> To: bruce.richard...@intel.com
> Cc: dev@dpdk.org; Gavin Hu <gavin...@arm.com>; rasl...@mellanox.com;
> therb...@redhat.com; Honnappa Nagarahalli
> <honnappa.nagaraha...@arm.com>
> Subject: [PATCH] build: enable Arm NEON flags when __aarch64__ is defined
>
> GCC version 4.8.5 does not pre-define __ARM_NEON. NEON is not optional
> for ArmV8. Hence NEON related code can be enabled when __aarch64__ is
> defined.
>
> Bugzilla ID: 82
>
> Signed-off-by: Honnappa Nagarahalli <honnappa.nagaraha...@arm.com>
> Reviewed-by: Phil Yang <phil.y...@arm.com>
> Reviewed-by: Gavin Hu <gavin...@arm.com>
> Reported-by: Raslan Darawsheh <rasl...@mellanox.com>
> Reported-by: Thomas F Herbert <therb...@redhat.com>
Acked-by: Gavin Hu <gavin...@arm.com>
> ---
> config/arm/meson.build | 3 ++-
> mk/rte.cpuflags.mk | 2 +-
> 2 files changed, 3 insertions(+), 2 deletions(-)
>
> diff --git a/config/arm/meson.build b/config/arm/meson.build index
> 40dbc87f7..94cca490e 100644
> --- a/config/arm/meson.build
> +++ b/config/arm/meson.build
> @@ -157,7 +157,8 @@ else
> endif
> message(machine_args)
>
> -if cc.get_define('__ARM_NEON', args: machine_args) != ''
> +if (cc.get_define('__ARM_NEON', args: machine_args) != '' or
> + cc.get_define('__aarch64__', args: machine_args) != '')
> dpdk_conf.set('RTE_MACHINE_CPUFLAG_NEON', 1)
> compile_time_cpuflags += ['RTE_CPUFLAG_NEON'] endif diff --git
> a/mk/rte.cpuflags.mk b/mk/rte.cpuflags.mk index 60713137d..43ed84155
> 100644
> --- a/mk/rte.cpuflags.mk
> +++ b/mk/rte.cpuflags.mk
> @@ -89,7 +89,7 @@ CPUFLAGS += VSX
> endif
>
> # ARM flags
> -ifneq ($(filter $(AUTO_CPUFLAGS),__ARM_NEON),)
> +ifneq ($(filter __ARM_NEON __aarch64__,$(AUTO_CPUFLAGS)),)
> CPUFLAGS += NEON
> endif
>
> --
> 2.17.1
