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From: "Gavin Hu (Arm Technology China)" <Gavin.Hu@arm.com>
To: Luca Boccassi <bluca@debian.org>, "dev@dpdk.org" <dev@dpdk.org>
Cc: "bruce.richardson@intel.com" <bruce.richardson@intel.com>,
	"christian.ehrhardt@canonical.com"
	<christian.ehrhardt@canonical.com>,
	"stable@dpdk.org" <stable@dpdk.org>,
	Honnappa Nagarahalli <Honnappa.Nagarahalli@arm.com>,
	"jerinj@marvell.com" <jerinj@marvell.com>
Subject: Re: [dpdk-dev] [PATCH] build: mention -march in pkg-config description
Date: Fri, 11 Jan 2019 03:58:46 +0000	[thread overview]
Message-ID: <VI1PR08MB31672167AC760DC920DE714E8F850@VI1PR08MB3167.eurprd08.prod.outlook.com> (raw)
In-Reply-To: <20190110172806.12952-1-bluca@debian.org>



> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Luca Boccassi
> Sent: Friday, January 11, 2019 1:28 AM
> To: dev@dpdk.org
> Cc: bruce.richardson@intel.com; christian.ehrhardt@canonical.com; Luca
> Boccassi <bluca@debian.org>; stable@dpdk.org
> Subject: [dpdk-dev] [PATCH] build: mention -march in pkg-config description
>
> Applications need to at least match DPDK's -march option to build
> successfully due to some static inline functions in the public headers.
>
> This might cause problems, especially in distributions, so add a note
> in the pkg-config description.
>
> Fixes: a25a650be5f0 ("build: add infrastructure for meson and ninja builds")
> Cc: stable@dpdk.org
>
> Signed-off-by: Luca Boccassi <bluca@debian.org>
> ---
> At the moment there are no adversely affected applications in Debian and
> Ubuntu (collectd builds a separate shared object, and OVS/virtio-forwareder
> are stand-alone DPDK-specific binaries), but we thought that having an
> explicit notice would be good.
>
>  meson.build | 4 +++-
>  1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/meson.build b/meson.build
> index f87dc235f..35126106a 100644
> --- a/meson.build
> +++ b/meson.build
> @@ -83,7 +83,9 @@ pkg.generate(name: meson.project_name(),
>  libraries: dpdk_libraries,
>  libraries_private: dpdk_drivers + dpdk_static_libraries +
>  ['-Wl,-Bdynamic'] + dpdk_extra_ldflags,
> -description: 'The Data Plane Development Kit (DPDK)',
> +description: '''The Data Plane Development Kit (DPDK).
> +Note that CFLAGS might contain an -march flag higher than typical baseline.
> +This is required for a number of static inline functions in the public
>From Arm's perspective, this notice is really necessary for some extensions like LSE to work for performance.
Reviewed-by: Gavin Hu <gavin.hu@arm.com>

> headers.''',
>  subdirs: [get_option('include_subdir_arch'), '.'],
>  extra_cflags: ['-include', 'rte_config.h'] + machine_args
>  )
> --
> 2.20.1

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  reply	other threads:[~2019-01-11  3:58 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-01-10 17:28 Luca Boccassi
2019-01-11  3:58 ` Gavin Hu (Arm Technology China) [this message]
2019-01-11  9:57   ` Bruce Richardson
2019-01-28  0:50     ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon

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