Re: Question on updating to 29.1

[PierGianLuca]

Hi everyone,

I'm finally getting around to installing Emacs 29.1 (from the tarball, on 
Ubuntu 20.04), and was looking at the options listed by Basile. I have some 
questions or curiosities:

> Basile Starynkevitch wrote:
>
> > './configure'  'CFLAGS=-O2 -g' 'CC=/usr/bin/gcc-13'
> > '--with-native-compilation' '--with-json'
> > '--enable-link-time-optimization' '--with-x-toolkit=gtk3'
> > '--program-suffix=-trunk'

– I don't have gcc-13, so I'll skip that.

– "--with-native-compilation" what does this do? I imagine it's something not 
specifically related to Emacs.

– "--with-json" ditto?

– "with-x-toolkit=gtk3" is this option already chosen by default? I see that 
the Emacs install instructions say

"If you use exclusively X, do not use the PGTK port.  There are a number of respects 
in which the regular --with-x-toolkit=gtk build works better"

which sounds like "=gtk" is the default


Thank you for any info you can share, and for your patience with someone 
inexperienced with these kinds of installations!

Luca