Re: [dpdk-dev] [PATCH v3 2/5] net/hns3: fix build with sve enabled

[Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>]

<snip>

> 
> Building with SVE extension enabled stopped with error:
> 
>  error: ACLE function ‘svwhilelt_b64_s32’ requires ISA extension ‘sve’
>    18 | #define PG64_256BIT  svwhilelt_b64(0, 4)
> 
> This is caused by unintentional cflags reset.
> Fixed the issue by not touching cflags, and using flags defined by compiler.
> 
> Fixes: 952ebacce4f2 ("net/hns3: support SVE Rx")
> Cc: stable@dpdk.org
> 
> Signed-off-by: Ruifeng Wang <ruifeng.wang@arm.com>

Reviewed-by: Honnappa Nagarahalli <honnappa.nagarahalli@arm.com>
> ---
> v3:
> Removed extra flag, use compiler flag instead.
> 
>  drivers/net/hns3/hns3_rxtx.c | 4 ++--
>  drivers/net/hns3/meson.build | 1 -
>  2 files changed, 2 insertions(+), 3 deletions(-)
> 
> diff --git a/drivers/net/hns3/hns3_rxtx.c b/drivers/net/hns3/hns3_rxtx.c
> index 88d3baba4..5ac36b314 100644
> --- a/drivers/net/hns3/hns3_rxtx.c
> +++ b/drivers/net/hns3/hns3_rxtx.c
> @@ -10,7 +10,7 @@
>  #include <rte_io.h>
>  #include <rte_net.h>
>  #include <rte_malloc.h>
> -#if defined(RTE_ARCH_ARM64) && defined(CC_SVE_SUPPORT)
> +#if defined(RTE_ARCH_ARM64) && defined(__ARM_FEATURE_SVE)
>  #include <rte_cpuflags.h>
>  #endif
> 
> @@ -2467,7 +2467,7 @@ hns3_rx_burst_mode_get(struct rte_eth_dev
> *dev, __rte_unused uint16_t queue_id,  static bool
>  hns3_check_sve_support(void)
>  {
> -#if defined(RTE_ARCH_ARM64) && defined(CC_SVE_SUPPORT)
> +#if defined(RTE_ARCH_ARM64) && defined(__ARM_FEATURE_SVE)
>  	if (rte_cpu_get_flag_enabled(RTE_CPUFLAG_SVE))
>  		return true;
>  #endif
> diff --git a/drivers/net/hns3/meson.build b/drivers/net/hns3/meson.build
> index 45cee34d9..5674d986b 100644
> --- a/drivers/net/hns3/meson.build
> +++ b/drivers/net/hns3/meson.build
> @@ -32,7 +32,6 @@ deps += ['hash']
>  if arch_subdir == 'arm' and dpdk_conf.get('RTE_ARCH_64')
>  	sources += files('hns3_rxtx_vec.c')
>  	if cc.get_define('__ARM_FEATURE_SVE', args: machine_args) != ''
> -		cflags = ['-DCC_SVE_SUPPORT']
>  		sources += files('hns3_rxtx_vec_sve.c')
>  	endif
>  endif
> --
> 2.25.1