Hi all, I tried installing firedrake on my laptop with `Ubuntu: 18.04` but have been unsuccessful so far. These are the warnings I see in the `log` file =============================================================================== ***** WARNING : F90 (set to mpif90) found in environment variables - ignoring use ./configure F90=$F90 if you really want to use that value ****** =============================================================================== =============================================================================== ***** WARNING : Using default optimization C flags -g -O You might consider manually setting optimal optimization flags for your system with COPTFLAGS="optimization flags" see config/examples/arch-*-opt.py for examples =============================================================================== =============================================================================== ***** WARNING : Using default C++ optimization flags -g -O You might consider manually setting optimal optimization flags for your system with CXXOPTFLAGS="optimization flags" see config/examples/arch-*-opt.py for examples =============================================================================== =============================================================================== ***** WARNING : Using default FORTRAN optimization flags -g -O You might consider manually setting optimal optimization flags for your system with FOPTFLAGS="optimization flags" see config/examples/arch-*-opt.py for examples =============================================================================== and it fails to build PETSc beyond this point. ******************************************************************************* UNABLE to CONFIGURE with GIVEN OPTIONS (see configure.log for details): ------------------------------------------------------------------------------- Your libraries are from OpenMPI but it appears your mpiexec is from MPICH ******************************************************************************* I am attaching the entire `log` file for reference. Any leads into what could be possibly going wrong would be helpful. Thanks Bhavesh -- *Bhavesh Shrimali* *Ph.D. Student, **Civil and Environmental Engineering,* *University of Illinois Urbana-Champaign* *Champaign, IL, United States* *Email : bshrima2@illinois.edu <bshrima2@illinois.edu>* *Web : **https://bhaveshshrimali.github.io/ <https://bhaveshshrimali.github.io/>*