Re: [dpdk-dev] [PATCH] ethdev: introduce enable_driver_sdk to install driver headers

[Bruce Richardson <bruce.richardson@intel.com>]

On Fri, Mar 12, 2021 at 04:25:09PM +0100, David Marchand wrote:
> On Fri, Mar 12, 2021 at 4:20 PM Ferruh Yigit <ferruh.yigit@intel.com> wrote:
> >
> > On 3/11/2021 7:27 PM, Tyler Retzlaff wrote:
> > > Introduce a meson option enable_driver_sdk when true installs internal
> > > driver headers for ethdev. this allows drivers that do not depend on
> > > stable api/abi to be built external to the dpdk source tree.
> > >
> > > Signed-off-by: Tyler Retzlaff <roretzla@linux.microsoft.com>
> > > ---
> > >
> > > it's still unclear to me if we should be renaming the headers:
> > >
> > >    ethdev_driver.h -> rte_ethdev_driver.h
> > >    ethdev_pci.h -> rte_ethdev_pci.h
> > >    ethdev_vdev.h -> rte_ethdev_vdev.h
> > >
> > >   lib/librte_ethdev/meson.build | 5 +++++
> > >   meson_options.txt             | 2 ++
> > >   2 files changed, 7 insertions(+)
> > >
> > > diff --git a/lib/librte_ethdev/meson.build b/lib/librte_ethdev/meson.build
> > > index c37b2e377..7ecdec6f0 100644
> > > --- a/lib/librte_ethdev/meson.build
> > > +++ b/lib/librte_ethdev/meson.build
> > > @@ -20,6 +20,11 @@ headers = files('rte_ethdev.h',
> > >       'rte_mtr_driver.h',
> > >       'rte_tm.h',
> > >       'rte_tm_driver.h')
> > > +if get_option('enable_driver_sdk')
> > > +headers += files('ethdev_driver.h',
> > > +     'ethdev_pci.h',
> > > +     'ethdev_vdev.h')
> > > +endif
> >
> > Instead of adding the "get_option('enable_driver_sdk')" checks to the modules,
> > what about a more generic solution, like:
> >
> > modules assign relevant headers into a new variable, let's say 'pmd_headers',
> > and in a high level meson file, all 'pmd_headers' are installed if
> > 'enable_driver_sdk' enabled?
> >
> 
> +1.
> Just, I don't like "pmd_headers" as the list name.
> It can be misunderstood as the list of pmd-specific headers (thinking
> of rte_pmd_i40e.h), that are exposed to applications.
>
Since the option is called "enable_driver_sdk" the variable name of
"driver_sdk_headers" would be a good match. We should try and keep variable
names and option names in sync as much as possible.