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From: Luca Boccassi <bluca@debian.org>
To: Christian Ehrhardt <christian.ehrhardt@canonical.com>,
	dev <dev@dpdk.org>,  Kevin Laatz <kevin.laatz@intel.com>
Cc: Thomas Monjalon <thomas@monjalon.net>
Subject: Re: [dpdk-dev] [PATCH] build: avoid --as-needed as it causes overlinking
Date: Wed, 28 Aug 2019 14:49:04 +0100	[thread overview]
Message-ID: <6b576d603fbbaceb922fcd96e666bc7caf603cf4.camel@debian.org> (raw)
In-Reply-To: <20190828122752.27887-1-christian.ehrhardt@canonical.com>

On Wed, 2019-08-28 at 14:27 +0200, Christian Ehrhardt wrote:
> A while ago telemetry was added in 57ae0ec6 and it also added as-
> needed
> to config/meson.build. This seems no more needed these days as due to
> other
> build changes the ordering in buildlogs is:
>   [...] -lrte_telemetry [...] -Wl,--no-as-needed [...]
> Which means telemetry no more benefits from --no-as-needed anyway.
> 
> Overlinking problems get triggered by the meson generated pkgconfig
> which
> will have:
>    [...] -Wl,--no-as-needed <somelibsusedbydpdk>
> This will overlink <somelibs> and in addition anything that follows
> as it also doesn't wrap back to --as-needed. So if a projects
> includes
> dpdk libs + <other> it will also consider <other> with --no-as-
> needed.
> 
> Fixes: 
> https://bugs.launchpad.net/ubuntu/+source/dpdk/+bug/1841759
> 
> 
> Signed-off-by: Christian Ehrhardt <
> christian.ehrhardt@canonical.com
> >
> ---
>  config/meson.build | 3 ---
>  1 file changed, 3 deletions(-)
> 
> diff --git a/config/meson.build b/config/meson.build
> index 2bafea530..58800a980 100644
> --- a/config/meson.build
> +++ b/config/meson.build
> @@ -93,9 +93,6 @@ dpdk_conf.set('RTE_TOOLCHAIN_' +
> toolchain.to_upper(), 1)
>  
>  dpdk_conf.set('RTE_ARCH_64', cc.sizeof('void *') == 8)
>  
> -add_project_link_arguments('-Wl,--no-as-needed', language: 'c')
> -dpdk_extra_ldflags += '-Wl,--no-as-needed'
> -
>  # use pthreads
>  add_project_link_arguments('-pthread', language: 'c')
>  dpdk_extra_ldflags += '-pthread'
> 

Acked-by: Luca Boccassi <bluca@debian.org>

-- 
Kind regards,
Luca Boccassi

  reply	other threads:[~2019-08-28 13:49 UTC|newest]

Thread overview: 17+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-08-28 12:27 Christian Ehrhardt
2019-08-28 13:49 ` Luca Boccassi [this message]
2019-08-28 13:53 ` Aaron Conole
2019-08-28 14:48   ` Christian Ehrhardt
2019-08-28 15:14     ` Aaron Conole
2019-08-28 15:23       ` Aaron Conole
2019-08-29 10:18         ` Christian Ehrhardt
2019-08-29 15:25           ` Christian Ehrhardt
2019-08-29 15:30             ` [dpdk-dev] [PATCH v2] " Christian Ehrhardt
2019-08-29 15:34               ` Bruce Richardson
2019-08-29 16:02                 ` Luca Boccassi
2019-09-02  7:09                   ` Christian Ehrhardt
2019-09-04  9:13                     ` Christian Ehrhardt
2019-09-04  9:18                       ` Bruce Richardson
2019-09-10  6:48                         ` Christian Ehrhardt
2019-09-12 13:43                           ` Christian Ehrhardt
2019-10-12 13:02                             ` [dpdk-dev] [dpdk-stable] " Thomas Monjalon

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