NS3 - compile - MPI Support : not enabled (mpic++ not found)

need to:

# dnf install libgfortran libtorque numactl

# export PATH=$PATH:/usr/lib64/openmpi/bin
# export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/lib64/openmpi/lib

 then:

# ./waf configure --enable-sudo --enable-examples --enable-tests --enable-mpi --with-openflow=/opt/tools/network_simulators/ns3/ns-allinone-3.25/openflow/