[slurm-users] slurm-20.02.1-1 failed rpmbuild with error File not found

[Michael Jennings]

They do something even better:  They allow the user/customer to make
the choice in the spec file! :-)  And to be clear, they don't expect
users to be experts in building packages; that's why their Quick-Start
Guide (https://slurm.schedmd.com/quickstart_admin.html) is as thorough
as it is; it even has instructions for building RPMs with
conditionals! :-)

Look at https://github.com/SchedMD/slurm/blob/master/slurm.spec#L31
for the gory details.  By passing `--with mysql` to `rpmbuild`, you
are making the choice "I want Slurm to require MySQL or MariaDB."  By
passing `--without mysql` instead, you're making the choice "I don't
want Slurm's MySQL/MariaDB support."  And specifying neither means you
don't care.  That's how RPM build conditionals work.

Ole is 100% correct; if you want to deviate from the default
"auto-detect" behavior, you need to pass arguments to the build.

Slurm is a product that has to build on an enormous variety of
hardware and software platforms, and the SchedMD folks do a
spectacular job of keeping that support functional while still
maintaining flexibility and reliability.

It's not possible for SchedMD to "[make] a choice for the db" that
will work for all cases, nor can they make the choice that works for
your particular use case without breaking all the other ones.  It's
not just tricky, as Ole said; it's *impossible*.

But they did the best *possible* thing:  they kept the default that
works in the majority of situations but did the work to give users,
admins, and customers the flexibility to customize the build to their
particular needs if the defaults *don't* happen to work for them.  For
the record, it's not easy to write a truly portable, clean,
high-quality spec file.  SchedMD is one of the best anywhere.  And
I've been doing RPM packaging and development for 20 years...so I
don't say that lightly! :-)

Michael



On Monday, 20 April 2020, at 22:21:11 (+0200),
Christian Anthon wrote:

> That makes sense. Though I would prefer that they made a choice for the db
> in the spec file. Just makes it easier for people who aren't experts in
> building packages. And slurmdbd will work with both mysql and mariadb
> regardless of what it was built against.
> 
> Thanks for the update,
> 
> Christian.
> 
> On 20/04/2020 17.57, Ole Holm Nielsen wrote:
> > For the record: The Slurm developers has found it tricky to write a
> > slurm.spec file which requires the mysql-devel package and still works
> > in all environments, see https://bugs.schedmd.com/show_bug.cgi?id=6488
> > 
> > My recommendation[1] is therefore to explicitly require mysql when
> > building Slurm RPMs:
> > 
> > export VER=20.02.1-1
> > rpmbuild -ta slurm-$VER.tar.bz2 --with mysql
> > 
> > This will catch the case where you forgot to install
> > mysql-devel/mariadb-devel.
> > 
> > /Ole
> > 
> > [1]
> > https://wiki.fysik.dtu.dk/niflheim/Slurm_installation#build-slurm-packages
> > 
> 

-- 
Michael E. Jennings <mej at lanl.gov>
HPC Systems Team, Los Alamos National Laboratory
Bldg. 03-2327, Rm. 2341     W: +1 (505) 606-0605