+
+ # no pdfx -> no zugferd possible
+ my $ret = kpsewhich('template/print/', 'sty', 'pdfx');
+ die "Cannot use pdfx. Please install this package first (debian: apt install texlive-latex-extra)" if $ret;
+ # check version 2018
+ my $latex = $::lx_office_conf{applications}->{latex} || 'pdflatex';
+ my $pdfx = (system ${latex} . ' --interaction=batchmode "\documentclass{minimal} \RequirePackage{pdfx} \csname @ifpackagelater\endcsname{pdfx}{2018/12/22}{}{\show\relax} \begin{document} \end{document}"');
+
+ print_result ("Looking for pdfx version 2018 or higher", !$pdfx);
+ push @missing_modules, \(name => 'pdfx') if $pdfx;
+