\RequirePackage{ifxetex,ifluatex,ifpdf,dtklogos}
\ifxetex
\usepackage{mathspec}
\setmathfont{Latin Modern Math}
\usepackage{libertineotf}
\else
\ifluatex
\usepackage{fontspec}
\setmathrm{Latin Modern Math}
\setmathtt{Latin Modern Math}
\setmathsf{Latin Modern Math}
\usepackage{libertineotf}
\else
%\ifpdf %% we have a latex or pdf run
\RequirePackage[T1]{fontenc}
\usepackage{libertine}
% \usepackage{beramono}
% \RequirePackage[de,expert,uprightgreek]{lucidabr}% für mathe
% \IfFileExists{lucbmath.sty}{\usepackage[de,expert,uprightgreek]{lucbmath}}{}% für mathe
\fi\fi
