[Bug 2253356] Review Request: lusol - LU factors of a square or rectangular sparse matrix

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https://bugzilla.redhat.com/show_bug.cgi?id=2253356



--- Comment #3 from Jerry James <loganjerry@xxxxxxxxx> ---
Thank you for the review, Benson.

(In reply to Benson Muite from comment #2)
> a) Can the file src/lusol.txt be added to the documentation?
> %doc src/lusol.txt

Sure.  Wow, that's some ancient history in that file. :-)

> b) Should the mod files lusol.mod and lusol_precision.mod be packaged?
> These are development files typically placed in %{_fmoddir} and devel package
> must then have
> Requires: gcc-gfortran%{_isa}
> see
> https://docs.fedoraproject.org/en-US/packaging-guidelines/Fortran/

Well, we could.  I personally am interested in this package only for purposes
of unbundling it from papilo.  For that, I only need the C interface.  We could
provide the Fortran interface too, but I'm not sure I want to encourage anyone
to use this package.  It seems unmaintained.  As you probably noticed, I've got
2 pull requests from January and a bug report from August that have had no
activity at all.  There have been no commits for over a year (and that commit
was just adding one line to .gitignore).  I'm thinking of suggesting to the
papilo maintainers that they find a more maintained LU solver.

Anyway, I personally have no motivation to package the Fortran interface.  What
do you think?  Is it okay to just package the C interface, and add the Fortran
interface if somebody shows up who needs it?  (I think that is highly unlikely,
by the way.)

> c) Maybe also send a pull request to add soname upstream?

Upstream supports OS X builds as well as Linux builds.  Do you know how sonames
are added for OS X?  An upstream patch would have to handle both.

> d) patch lusol-uninit.patch seems logical, but the code has no tests, can
> check
> this, but would need a few days.

Yes, I need to pull my linear algebra textbook off the shelf and figure out if
that patch is correct.

> e) Build process can sometimes fail - not sure why:
> https://kojipkgs.fedoraproject.org//work/tasks/8555/110038555/build.log
> Does not happen consistently though:
> https://koji.fedoraproject.org/koji/taskinfo?taskID=110040031

Ah, it's a mistake in the makefile.  Line 146:

# extra fortran dependencies
lusol.o : lusol_precision.mod

But both objects are actually in the src directory, so it's a race to see if
lusol_precision.mod is built in time.  I sent a patch upstream:
https://github.com/nwh/lusol/pull/14

So I added src/lusol.txt to %doc and added a patch for the makefile race.  The
URLs are the same as above.


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