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From: Bruce Richardson <bruce.richardson@intel.com>
To: Hemant Agrawal <hemant.agrawal@nxp.com>
Cc: "Ma, LihongX" <lihongx.ma@intel.com>,
	"dev@dpdk.org" <dev@dpdk.org>,
	"bluca@debian.org" <bluca@debian.org>
Subject: Re: [dpdk-dev] [PATCH 2/2] config: allow overriding some build defaults
Date: Tue, 1 Sep 2020 10:02:41 +0100
Message-ID: <20200901090241.GA1047@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <AM6PR04MB4456A1036B8F51A05E573EA0892E0@AM6PR04MB4456.eurprd04.prod.outlook.com>

On Tue, Sep 01, 2020 at 06:07:56AM +0000, Hemant Agrawal wrote:
> HI Bruce,
> 	Will you please also add similar command examples in docs so that it becomes easy for the developers to use meson?
> 
> Regards,
> Hemant
> 

I'll add a note in somewhere, but this is probably not something that we
want to be advertising too much. We are trying to move away from build-time
config so we want the defaults to be sane and try and avoid developers
asking the end-user to compile up DPDK with magic flags. That said, it
should be possible, and documented. :-)

/Bruce

> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Ma, LihongX
> Sent: Tuesday, September 1, 2020 10:48 AM
> To: Richardson, Bruce <bruce.richardson@intel.com>; dev@dpdk.org
> Cc: bluca@debian.org; Richardson, Bruce <bruce.richardson@intel.com>
> Subject: Re: [dpdk-dev] [PATCH 2/2] config: allow overriding some build defaults
> 
> Tested-by: lihongx Ma<lihongx.ma@intel.com> Before apply this patchset, set config like DRTE_LIBRTE_I40E_QUEUE_NUM_PER_VM=8 will failed, After apply this patchset, the the meson build can work find.
> Cmd like below:
> meson -Denable_kmods=True -Dlibdir=lib --default-library=static -Dexamples=vmdq_dcb -Dc_args='-DRTE_LIBRTE_I40E_QUEUE_NUM_PER_VM=8' config-test1 ninja -C config-test1
> 
> Regards,
> Ma,lihong
> 
> > -----Original Message-----
> > From: dev <dev-bounces@dpdk.org> On Behalf Of Bruce Richardson
> > Sent: Tuesday, August 25, 2020 7:45 PM
> > To: dev@dpdk.org
> > Cc: bluca@debian.org; Richardson, Bruce <bruce.richardson@intel.com>
> > Subject: [dpdk-dev] [PATCH 2/2] config: allow overriding some build 
> > defaults
> > 
> > In case a developer uses CFLAGS to set different default values for 
> > the defines in the rte_config.h file, use #ifndef / #endif guards 
> > around the setting of those values. For those lines just "defining" a 
> > macro without assigning it a value to be used by code, drop the value 
> > argument (where
> > possible) to make it clearer that that is what is happening, since 
> > those don't need the #ifdef guard.
> > 
> > Signed-off-by: Bruce Richardson <bruce.richardson@intel.com>
> > ---
> >  config/rte_config.h | 110 
> > +++++++++++++++++++++++++++++++++++++++-----
> >  1 file changed, 99 insertions(+), 11 deletions(-)
> > 
> > diff --git a/config/rte_config.h b/config/rte_config.h index
> 

  reply index

Thread overview: 23+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-08-25 11:44 [dpdk-dev] [PATCH 1/2] config: remove explicit undefinition of unset values Bruce Richardson
2020-08-25 11:44 ` [dpdk-dev] [PATCH 2/2] config: allow overriding some build defaults Bruce Richardson
2020-09-01  5:17   ` Ma, LihongX
2020-09-01  6:07     ` Hemant Agrawal
2020-09-01  9:02       ` Bruce Richardson [this message]
2020-09-03 14:50       ` Bruce Richardson
2020-09-03 14:49 ` [dpdk-dev] [PATCH v2 0/3] Allow overriding of build-time constants Bruce Richardson
2020-09-03 14:49   ` [dpdk-dev] [PATCH v2 1/3] config: remove explicit undefinition of unset values Bruce Richardson
2020-09-03 14:49   ` [dpdk-dev] [PATCH v2 2/3] config: allow overriding some build defaults Bruce Richardson
2020-09-03 14:49   ` [dpdk-dev] [PATCH v2 3/3] doc: add notes on overriding extra config values Bruce Richardson
2020-09-03 15:43     ` Hemant Agrawal
2020-10-14 14:20   ` [dpdk-dev] [PATCH v2 0/3] Allow overriding of build-time constants Bruce Richardson
2020-10-15  8:55     ` Chen, BoX C
2020-10-15  9:20       ` Bruce Richardson
2020-10-16 15:47   ` David Marchand
2020-10-16 15:55     ` Bruce Richardson
2020-10-16 16:46       ` David Marchand
2020-10-19 10:21         ` Bruce Richardson
2020-10-19 21:04           ` Thomas Monjalon
2020-10-20  8:34             ` Bruce Richardson
2020-10-20 10:04               ` Thomas Monjalon
2020-10-20 10:15                 ` Bruce Richardson
2020-10-28 16:32   ` Bruce Richardson

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