# Suggestion: is it possible to use built-in perl.exe by default?

Siep Kroonenberg siepo at bitmuis.nl
Tue May 19 21:04:08 CEST 2020

```On Tue, May 19, 2020 at 06:27:10PM +0800, Chen Yu wrote:
> I encountered a weird problem and at last found it's related to perl.exe,
> latexmk, and file path containing non-ASCII characters. The problem appears
> on both TexLive 2019 and 2020. My OS is Windows 10 x64. Except the built-in
> perl from TexLive, I have also a perl from cygwin installed.
>
> When the perl.exe from cygwin is in %PATH%, latexmk.exe use this perl.exe
> to call the script latexmk.pl.

This should only happen if TEXLIVE_WINDOWS_TRY_EXTERNAL_PERL is set
to 1 in D:\texlive\2020\texmf.cnf, at least, if you are talking