Re: [PATCH] build: add drivers_install_subdir meson option

[Timothy Redaelli <tredaelli@redhat.com>]

On Mon, 01 Oct 2018 10:46:02 +0100
Luca Boccassi <bluca@debian.org> wrote:

> On Mon, 2018-10-01 at 10:25 +0100, Bruce Richardson wrote:
> > On Mon, Oct 01, 2018 at 10:17:14AM +0100, Bruce Richardson wrote:  
> > > On Fri, Sep 28, 2018 at 06:58:03PM +0100, Luca Boccassi wrote:  
> > > > Allow users and packagers to override the default dpdk/drivers
> > > > subdirectory where the PMDs get installed under $lib.
> > > > 
> > > > Signed-off-by: Luca Boccassi <bluca@debian.org>
> > > > ---  
> > > 
> > > I'm ok with this change, but what is the current location used by
> > > distro's
> > > right now? I mistakenly never checked what was done before I used
> > > dpdk/drivers as a default value, and I'd like the default to match
> > > the
> > > common option if possible.
> > > 
> > > /Bruce
> > >   
> > 
> > Replying to my own question, I've just checked on CentOS and Debian,
> > and it
> > appears both are using directory "dpdk-pmds" as the subdir name.
> > Therefore,
> > let's just make that the default. [Does it need to be configurable in
> > that
> > case?]
> > 
> > /Bruce  
> 
> If the default is the one I expect then I'm fine without having an
> option (actually happier - less things to configure).
> 
> But in Debian/Ubuntu it's dpdk-MAJORVER-drivers since last January :-)
> We changed because using a single directory creates problems when
> multiple different ABI versions are installed, due to the EAL autoload
> from that directory. So we need a different subdirectory per ABI
> revision.
> 
> We were actually talking with Timothy a while ago to make this
> consistent across our distros, and perhaps Marco can chip in as well.
> 
> Timothy, Marco, is using dpdk-MAJORVER-$something ok for you? I'm not
> too fussy on $something, it can be drivers or pmds or something else.
> 

LGTM.
If needed, we can just do a compatibility symlink using the current
dpdk-pmds path