Looks like the Fortran interface is missing. I will add it shortly. Barry > On Jun 7, 2018, at 3:55 AM, Marius Buerkle <mbuerkle at web.de> wrote: > > > Hi ! > > I try to use MatGetOwnershipIS in Fortran but i get an undefined reference to `matgetownershipis_' when linking my program. Is this available for Fortran ?