bug#81424: 32.0.50; Build time dependency on TeX

>>>>> On Sat, 08 Aug 2026, Eli Zaretskii wrote:

> Ping!  Can we please make some progress in this issue?  Or maybe we
> should close it?

Sorry, for some reason I had missed Vincent's last message.

>> I fully agree with you that Emacs build should not need tex/texindex
>> installed. You have spotted a problem: thank you for reporting this.
>> I was just arguing about calling tex "not standard", this is anyway
>> subjective, as I am a contributer to LaTeX/Texinfo etc. so to me they
>> are quite standard, but you had in mind some OS system packages. So
>> we were just comparing apples to carrots.
>> 
>> Now, I have pushed a branch scratch/remove-build-tex-prerequisite
>> with a fix for the problem you have reported. Please let me know if
>> it solves it and when other Emacs experts confirm that it is ok for
>> them too I will cherry pick it to master.

I have tested with the scratch/remove-build-tex-prerequisite branch at
commit a378b96aaa8. The warning is gone but AFAICS the underlying
problem isn't fixed: The file ses-fr.info is only built and installed
when TeX Live (in particular, the /usr/bin/tex command) is present on
the system at configure time.

Still, I don't understand why tex would be required for the configure
test. Can't \texinfoversion be extracted from texinfo.tex using sed or
awk? What am I missing?