From mboxrd@z Thu Jan  1 00:00:00 1970
From: "George Kettleborough (EI)" <george.kettleborough@earlham.ac.uk>
Subject: Re: latex export creates "auto" directory
Date: Fri, 3 Mar 2017 16:08:37 +0000
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On 03/03/17 15:55, Takeshi Teshima wrote:
> I have a question regarding latex export.
>
> When I export an org-mode to a latex file, a directory named "auto" is
> created in the same folder as the tex file.
>
> However, I couldn't find what line in the source code of org-mode
> creates this directory.
>
> Does anyone know what causes this, or what variables can be used to
> control where the directory is created?
>

This is actually created by AucTeX. I guess if you open the latex source  
file in emacs then it gets created automatically if you have AucTeX  
installed.

It is documented here:  
https://www.gnu.org/software/auctex/manual/auctex/Parsing-Files.html