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From: Eli Zaretskii <eliz@gnu.org>
Newsgroups: gmane.emacs.devel
Subject: Re: multi-process elisp compilation?
Date: Tue, 27 Jul 2021 16:55:03 +0300
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To: "Perry E. Metzger" <perry@piermont.com>
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> Date: Tue, 27 Jul 2021 08:42:50 -0400
> Cc: emacs-devel@gnu.org
> From: "Perry E. Metzger" <perry@piermont.com>
> 
> On 7/26/21 22:23, Eli Zaretskii wrote:
> >> From: "Perry E. Metzger" <perry@piermont.com>
> >>
> >> Howdy! Nowadays, most of us have multiprocessor desktops, but so far as
> >> I can tell, when compiling elisp to .elc (or .eln) during make of Emacs,
> >> the build only takes advantage of one processor. Is there a magic option
> >> to configure that I missed that will use all my processors to compile
> >> elisp during the build?
> > You mean, "make -jN" where N is the number of execution units?
> 
> Precisely, but that seems to work for building Emacs's .c files but not 
> for compiling the elisp files.

No, it should compile the *.el files in parallel as well.  It works
here as expected, I use it all the time.