Re: Compilation speed

[Paul Eggert]

On 8/6/20 8:20 AM, Lars Ingebrigtsen wrote:

> And then ./configure takes 19 seconds, and that's fully single-threaded,
> I believe?  And...  I'm guessing there's no way to get that to be
> multi-threaded?

You'd either have to rework Autoconf to make it multiprocess (difficult) or 
split configure.ac into pieces and run several './configure' pieces in parallel 
(this might be doable but would still be tricky).

> 00:01:17   INFO     Scraping files for loaddefs.el...
> [...]
> 00:01:54   INFO     Scraping files for loaddefs.el...done
>
> Which is single-threaded and takes a whopping 37 seconds!  Could that
> possibly be parallelised in some way?  Probably be tricky...

Yes. But this is probably the lowest-hanging fruit.