I use an external document by both \input
-ting it and cross-referecing labels. It looks a bit like this:
\zexternaldocument*{external}
In picture \ref{external-link}, you see ...
\input{external}
However, I get lots of xr warnings like:
Package zref-xr Warning: File `external' not found or empty, labels not imported
So I think I need to run latex/pdflatex to create them. However, I don't want to make full pdfs off the external files (this would fail since they don't even include any packages - they are already as put in after \begin{document}
). So can I generate only .aux
-files for each external document?
Has someone a solution for Linux from shell (no GUI, please)?
\input
without any external documents - many thanks.