Hello, It seems mpi.mod is now mandatory https://gitlab.com/petsc/petsc/-/commit/68bd534a466d12bdec28b4c298b715271ec2... <https://gitlab.com/petsc/petsc/-/commit/68bd534a466d12bdec28b4c298b715271ec2dd31>. mpi.mod is not shipped by MS-MPI. I want to build MUMPS through PETSc and don’t really care about the Fortran PETSc interface on our Windows boxes (--with-fortran-interfaces=0). Yet, I’m now hit by: ******************************************************************************* UNABLE to CONFIGURE with GIVEN OPTIONS (see configure.log for details): ------------------------------------------------------------------------------- mpi.mod not found! PETSc fortran interface requires a working mpi.mod ******************************************************************************* Could this be fixed somehow, please? Thanks, Pierre