Re: [dpdk-dev] [PATCH 07/15] net/liquidio: rename version map after library file name

[Luca Boccassi <bluca@debian.org>]

On Tue, 2018-09-11 at 14:30 +0100, Bruce Richardson wrote:
> On Tue, Sep 11, 2018 at 02:09:30PM +0100, Luca Boccassi wrote:
> > On Tue, 2018-09-11 at 14:06 +0100, Bruce Richardson wrote:
> > > On Mon, Sep 10, 2018 at 09:04:07PM +0100, Luca Boccassi wrote:
> > > > The library is called librte_pmd_lio, so rename the map file
> > > > and
> > > > set
> > > > the name in the meson file so that the built library names with
> > > > meson
> > > > and legacy makefiles are the same
> > > > 
> > > > Fixes: bad475c03fee ("net/liquidio: add to meson build")
> > > > Cc: stable@dpdk.org
> > > > 
> > > > Signed-off-by: Luca Boccassi <bluca@debian.org>
> > > 
> > > Rather than doing this renaming, can we instead add a symlink in
> > > the
> > > install phase to map the old name to the new one? I'd like to see
> > > the
> > > consistency of directory name, map filename and driver name
> > > enforced
> > > strictly in the build system. Having exceptions is a pain.
> > > 
> > > /Bruce
> > 
> > We could, but the pain gets shifted on packagers then - what about
> > renaming the directory entirely to net/lio?
> > 
> 
> It is still an issue with packagers if the symlinks are created as
> part of
> the install step of DPDK itself (which is what I was intending)? I
> was
> thinking of adding a new post-install script for the backward
> compatible
> renames.

At least for Debian/Ubuntu, if I tell the tools that package libfoo1
needs to have libfoo.so.1.2.3, that's what it will do, without
following symlinks. So a broken link will be installed in the system,
unless I start tracking what symlinks are there and adding them
manually to the package they belong to.
There's also the fact that by policy the library package names should
match the file name of the library and its ABI revision, so
libfoo.so.1.2.3 should be in libfoo1 pkg vy policy - if they mismatch,
some linters tools are going to yell at me at the very least.

> As for renaming the directory, I don't mind, but I'll let the driver
> maintainers comment on their thoughts on it.
> 
> /Bruce

-- 
Kind regards,
Luca Boccassi