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From: Bruce Richardson <bruce.richardson@intel.com>
To: Neil Horman <nhorman@tuxdriver.com>
Cc: dev@dpdk.org, Jerin Jacob Kollanukkaran <jerinj@marvell.com>,
	Thomas Monjalon <thomas@monjalon.net>
Subject: Re: [dpdk-dev] [PATCH v2 02/10] meson: add BUILDING_RTE_SDK
Date: Thu, 20 Jun 2019 11:20:51 +0100	[thread overview]
Message-ID: <20190620102051.GA728@bricha3-MOBL.ger.corp.intel.com> (raw)
In-Reply-To: <20190619183443.GC19712@hmswarspite.think-freely.org>

On Wed, Jun 19, 2019 at 02:34:43PM -0400, Neil Horman wrote:
> On Wed, Jun 19, 2019 at 11:46:12AM +0100, Bruce Richardson wrote:
> > On Wed, Jun 19, 2019 at 06:39:00AM -0400, Neil Horman wrote:
> > > On Thu, Jun 13, 2019 at 03:44:02PM +0100, Bruce Richardson wrote:
> > > > On Thu, Jun 13, 2019 at 10:23:36AM -0400, Neil Horman wrote:
> > > > > The __rte_internal macro is defined dependent on the value of the build
> > > > > environment variable BUILDING_RTE_SDK.  This variable was set in the
> > > > > Makefile environment but not the meson environment, so lets reconcile
> > > > > the two by defining it for meson in the lib and drivers directories, but
> > > > > not the examples/apps directories, which should be treated as they are
> > > > > not part of the core DPDK library
> > > > > 
> > > > > Signed-off-by: Neil Horman <nhorman@tuxdriver.com>
> > > > > CC: Jerin Jacob Kollanukkaran <jerinj@marvell.com>
> > > > > CC: Bruce Richardson <bruce.richardson@intel.com>
> > > > > CC: Thomas Monjalon <thomas@monjalon.net>
> > > > > ---
> > > > >  drivers/meson.build | 1 +
> > > > >  lib/meson.build     | 1 +
> > > > >  2 files changed, 2 insertions(+)
> > > > > 
> > > > > diff --git a/drivers/meson.build b/drivers/meson.build
> > > > > index 4c444f495..a312277d1 100644
> > > > > --- a/drivers/meson.build
> > > > > +++ b/drivers/meson.build
> > > > > @@ -23,6 +23,7 @@ endif
> > > > >  
> > > > >  # specify -D_GNU_SOURCE unconditionally
> > > > >  default_cflags += '-D_GNU_SOURCE'
> > > > > +default_cflags += '-DBUILDING_RTE_SDK'
> > > > >  
> > > > >  foreach class:dpdk_driver_classes
> > > > >  	drivers = []
> > > > > diff --git a/lib/meson.build b/lib/meson.build
> > > > > index e067ce5ea..0e398d534 100644
> > > > > --- a/lib/meson.build
> > > > > +++ b/lib/meson.build
> > > > > @@ -35,6 +35,7 @@ if is_windows
> > > > >  endif
> > > > >  
> > > > >  default_cflags = machine_args
> > > > > +default_cflags += '-DBUILDING_RTE_SDK'
> > > > >  if cc.has_argument('-Wno-format-truncation')
> > > > >  	default_cflags += '-Wno-format-truncation'
> > > > >  endif
> > > > 
> > > > While this will work, it's not something that individual components should
> > > > ever need to override so I think using "add_project_arguments()" function
> > > > is a better way to add this to the C builds.
> > > > 
> > > That sounds like it makes sense to me, but reading the documentation for meson,
> > > I'm not sure I see the behavioral difference.  Can you elaborate on how
> > > add_project_arguments behaves differently here?
> > > 
> > The end result should be the same. The key differences are:
> > 1. Only ever needs to be set in one place
> > 2. Cannot be overridden by the individual objects in the build.
> > 
> > So it's just slightly cleaner. If you prefer your existing approach, I'm ok
> > with that.
> > 
> 
> No, I like the aspect of item 2, though, just for clarification, do we really
> only need to set it at the top level?  I ask because it seems that
> BUILDING_RTE_SDK should be set for the lib and drivers subtrees, but not the app
> subtree, as that tree, being the location of our example code, should be treated
> as non-core dpdk libraries, and so should throw an error if any code there
> attempts to use a dpdk internal only function.  Or is there some other magic
> afoot in that subtree?
> 
Good point. Keep your original patch as-is so.

/Bruce

  reply	other threads:[~2019-06-20 10:21 UTC|newest]

Thread overview: 104+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-05-25 18:43 [dpdk-dev] [RFC PATCH 0/2] introduce __rte_internal tag Neil Horman
2019-05-25 18:43 ` [dpdk-dev] [RFC PATCH 1/2] Add __rte_internal tag for functions and version target Neil Horman
2019-06-05 16:14   ` [dpdk-dev] [EXT] " Jerin Jacob Kollanukkaran
2019-05-25 18:43 ` [dpdk-dev] [RFC PATCH 2/2] Convert dpaa driver to tag internal-only symbols appropriately Neil Horman
2019-06-05 16:24 ` [dpdk-dev] [EXT] [RFC PATCH 0/2] introduce __rte_internal tag Jerin Jacob Kollanukkaran
2019-06-05 16:45   ` Bruce Richardson
2019-06-05 18:11     ` Neil Horman
2019-06-06  9:44       ` Jerin Jacob Kollanukkaran
2019-06-06 11:34         ` Neil Horman
2019-06-06 12:04           ` Jerin Jacob Kollanukkaran
2019-06-06 13:18             ` Wiles, Keith
2019-06-06 13:43               ` Neil Horman
2019-06-06 13:53                 ` Wiles, Keith
2019-06-06 14:46                   ` Neil Horman
2019-06-06 13:35             ` Neil Horman
2019-06-06 14:02               ` Jerin Jacob Kollanukkaran
2019-06-06 15:03                 ` Neil Horman
2019-06-06 15:14                   ` Jerin Jacob Kollanukkaran
2019-06-06 15:26                     ` Neil Horman
2019-06-06 16:23                       ` Jerin Jacob Kollanukkaran
2019-06-06 16:55                         ` Neil Horman
2019-06-07  9:41                           ` Jerin Jacob Kollanukkaran
2019-06-07 10:35                             ` Neil Horman
2019-06-07 15:42                   ` Ray Kinsella
2019-06-07 18:21                     ` Wiles, Keith
2020-01-09 15:49                       ` Neil Horman
2019-06-12 20:38 ` [dpdk-dev] [PATCH v1 0/9] dpdk: " Neil Horman
2019-06-12 20:38   ` [dpdk-dev] [PATCH v1 1/9] Add __rte_internal tag for functions and version target Neil Horman
2019-06-12 20:38   ` [dpdk-dev] [PATCH v1 2/9] Exempt INTERNAL symbols from checking Neil Horman
2019-06-12 20:38   ` [dpdk-dev] [PATCH v1 3/9] mark dpaa driver internal-only symbols with __rte_internal Neil Horman
2019-06-12 20:38   ` [dpdk-dev] [PATCH v1 4/9] fslmc: identify internal only functions and tag them as __rte_internal Neil Horman
2019-06-12 20:38   ` [dpdk-dev] [PATCH v1 5/9] dpaa2: Adjust dpaa2 driver to mark internal symbols with __rte_internal Neil Horman
2019-06-12 20:39   ` [dpdk-dev] [PATCH v1 6/9] dpaax: mark internal functions " Neil Horman
2019-06-12 20:39   ` [dpdk-dev] [PATCH v1 7/9] cpt: " Neil Horman
2019-06-17  5:27     ` [dpdk-dev] [EXT] " Anoob Joseph
2019-06-12 20:39   ` [dpdk-dev] [PATCH v1 8/9] octeonx: " Neil Horman
2019-06-12 20:39   ` [dpdk-dev] [PATCH v1 9/9] dpaa2: " Neil Horman
2019-06-12 21:14     ` Aaron Conole
2019-06-13 10:24       ` Neil Horman
2019-06-13  7:53   ` [dpdk-dev] [PATCH v1 0/9] dpdk: introduce __rte_internal tag David Marchand
2019-06-13 10:30     ` Neil Horman
2019-06-13 14:23 ` [dpdk-dev] [PATCH v2 0/10] " Neil Horman
2019-06-13 14:23   ` [dpdk-dev] [PATCH v2 01/10] Add __rte_internal tag for functions and version target Neil Horman
2020-04-17  2:04     ` Wang, Haiyue
2020-04-17  2:38       ` Neil Horman
2020-04-17  4:40         ` Wang, Haiyue
2019-06-13 14:23   ` [dpdk-dev] [PATCH v2 02/10] meson: add BUILDING_RTE_SDK Neil Horman
2019-06-13 14:44     ` Bruce Richardson
2019-06-19 10:39       ` Neil Horman
2019-06-19 10:46         ` Bruce Richardson
2019-06-19 18:34           ` Neil Horman
2019-06-20 10:20             ` Bruce Richardson [this message]
2019-06-20 10:21     ` Bruce Richardson
2019-06-13 14:23   ` [dpdk-dev] [PATCH v2 03/10] Exempt INTERNAL symbols from checking Neil Horman
2019-06-13 14:23   ` [dpdk-dev] [PATCH v2 04/10] mark dpaa driver internal-only symbols with __rte_internal Neil Horman
2019-06-13 14:23   ` [dpdk-dev] [PATCH v2 05/10] fslmc: identify internal only functions and tag them as __rte_internal Neil Horman
2019-06-17  7:30     ` Hemant Agrawal
2019-06-19 10:45       ` Neil Horman
2020-04-02  9:49         ` Hemant Agrawal
2020-04-02 11:30           ` Neil Horman
2020-04-02 15:44             ` Hemant Agrawal
2019-06-13 14:23   ` [dpdk-dev] [PATCH v2 06/10] dpaa2: Adjust dpaa2 driver to mark internal symbols with __rte_internal Neil Horman
2019-06-13 14:23   ` [dpdk-dev] [PATCH v2 07/10] dpaax: mark internal functions " Neil Horman
2019-06-13 14:23   ` [dpdk-dev] [PATCH v2 08/10] cpt: " Neil Horman
2019-06-13 14:23   ` [dpdk-dev] [PATCH v2 09/10] octeonx: " Neil Horman
2019-06-13 14:23   ` [dpdk-dev] [PATCH v2 10/10] dpaa2: " Neil Horman
2019-08-06 10:03   ` [dpdk-dev] [PATCH v2 0/10] dpdk: introduce __rte_internal tag Thomas Monjalon
2019-08-06 12:21     ` Neil Horman
2020-01-09  9:55       ` David Marchand
2020-01-09 11:46         ` Neil Horman
2020-01-09 11:53           ` David Marchand
2020-04-22 13:52   ` [dpdk-dev] [PATCH v3 0/1] " Haiyue Wang
2020-04-22 13:52     ` [dpdk-dev] [PATCH v3 1/1] eal: add internal ABI mark support Haiyue Wang
2020-04-22 14:13       ` David Marchand
2020-04-22 16:44         ` Wang, Haiyue
2020-04-22 16:37   ` [dpdk-dev] [PATCH v4 0/1] dpdk: introduce __rte_internal tag Haiyue Wang
2020-04-22 16:37     ` [dpdk-dev] [PATCH v4 1/1] eal: add internal ABI mark support Haiyue Wang
2020-04-23  3:19   ` [dpdk-dev] [PATCH v5 0/1] dpdk: introduce __rte_internal tag Haiyue Wang
2020-04-23  3:19     ` [dpdk-dev] [PATCH v5 1/1] eal: add internal ABI marking support Haiyue Wang
2020-04-24 14:52       ` David Marchand
2020-04-25  6:10         ` Wang, Haiyue
2020-04-25 14:21           ` David Marchand
2020-04-25 14:24             ` Thomas Monjalon
2020-04-25  6:04   ` [dpdk-dev] [PATCH v6 0/6] dpdk: introduce __rte_internal tag Haiyue Wang
2020-04-25  6:04     ` [dpdk-dev] [PATCH v6 1/6] eal: add internal ABI tag definition Haiyue Wang
2020-04-25  6:04     ` [dpdk-dev] [PATCH v6 2/6] build: enable internal API tag Haiyue Wang
2020-04-25  6:04     ` [dpdk-dev] [PATCH v6 3/6] mk: add internal tag check Haiyue Wang
2020-04-25  6:04     ` [dpdk-dev] [PATCH v6 4/6] devtools: ignore internal ABI check Haiyue Wang
2020-04-25  6:04     ` [dpdk-dev] [PATCH v6 5/6] devtools: exempt internal ABI checking Haiyue Wang
2020-04-25  6:04     ` [dpdk-dev] [PATCH v6 6/6] devtools: enforce internal tag at the beginning Haiyue Wang
2020-04-25 10:56   ` [dpdk-dev] [PATCH v7 0/6] dpdk: introduce __rte_internal tag Haiyue Wang
2020-04-25 10:56     ` [dpdk-dev] [PATCH v7 1/6] eal: add internal ABI tag definition Haiyue Wang
2020-04-25 10:56     ` [dpdk-dev] [PATCH v7 2/6] build: enable internal API tag Haiyue Wang
2020-04-25 10:56     ` [dpdk-dev] [PATCH v7 3/6] mk: add internal tag check Haiyue Wang
2020-04-25 14:34       ` David Marchand
2020-04-25 10:56     ` [dpdk-dev] [PATCH v7 4/6] devtools: ignore internal ABI check Haiyue Wang
2020-04-25 10:56     ` [dpdk-dev] [PATCH v7 5/6] devtools: exempt internal ABI checking Haiyue Wang
2020-04-25 14:34       ` David Marchand
2020-04-25 10:56     ` [dpdk-dev] [PATCH v7 6/6] devtools: enforce internal tag at the beginning Haiyue Wang
2020-04-25 14:39     ` [dpdk-dev] [PATCH v7 0/6] dpdk: introduce __rte_internal tag David Marchand
2020-04-25 16:34       ` Wang, Haiyue
2020-04-25 18:09       ` Wang, Haiyue
2020-04-29  8:22         ` David Marchand
2020-04-29  8:24           ` Wang, Haiyue

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