As this is a link error, not a compile error, and you did not show the link command, the first suspicion is that you didn't include the MPI libraries in the link.  The usual way of building an MPI application is to replace the ifort command with the MPI wrapper, usually mpif77 or mpif90, which provides all the MPI include and library paths.  Your book should have recommendations on how this is done.  Adding all the necessary paths to your project also would accomplish it.