def METHOD_NAME(self):
    # Set compiler.
    omp = ["", "omp"][self.spec.satisfies("threads=openmp")]
    compiler = os.path.basename(env["FC"]) + omp
    args = ["COMPILER={0}".format(compiler)]
    # Set MPI.
    if "+mpi" in self.spec:
        mpi = self.spec["mpi"]
        args += ["MPI={0}".format(mpi.name), "MPI_INST={0}".format(mpi.prefix)]
    return args