[c,z]dotc => [cc,zz]dotc

[prj-]

Pull request purpose

macOS portability

Detailed changes proposed in this pull request

See also Reference-ScaLAPACK/scalapack#51.

[fghoussen]

CI down, no solution for now (#341). We can't accept more PR. @sylvestre: what do you think? Can you handle this?

[prj-]

Just some historical consideration. This portability fix is in FreeFEM for as long as I can remember (https://github.com/FreeFem/FreeFem-sources/blob/07f5919c8ccb6db94cc7fc20fc6b7931c64737e5/3rdparty/arpack/Makefile.am#L72). For two years (https://github.com/FreeFem/FreeFem-sources/blob/6307e79edfb7f7f4f4ee78e3339977066139e5ab/3rdparty/ff-petsc/Makefile#L92), I'm using my fork through SLEPc --download-arpack which has this patch, so this has been thoroughly tested already. @joseeroman suggested that I get this merged here so that I don't have to maintain my fork anymore and also this will benefit to (SLEPc + ARPACK) \ FreeFEM users.

[prj-]

@fghoussen, I've rebased, could you please run the workflow?

[sylvestre]

done

[fghoussen]

@prj-: can you update the change log?

[prj-]

Done.

[prj-]

@fghoussen, could you please restart the workflow and approve/comment?

[prj-]

Thank you! I'll get this integrated in SLEPc now and will not have to update my fork anymore.

[fghoussen]

Don't hesitate to PR patches back here! :)