\documentclass[monochrome]{../fithesis3}
\usepackage{ifxetex}
\ifxetex
  \usepackage{polyglossia}
  \setmainlanguage{english}
\else
  \usepackage[english]{babel}
\fi
\thesissetup{
  basepath=..,
  faculty=phil}
\begin{document}
  foo bar
\end{document}
