export FCGLAG='-fp-model fast=2'
./configure --enable-mpi=yes --enable-optim=safe --with-mpi-prefix=/opt/sw/ompi/intel/18.0/ --with-linalg-flavor=mkl --with-linalg-incs=-I/opt/intel/mkl/include/ --prefix=/opt/apps/ompi/abinit/8.6.1