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Re: Building cvs emacs on a dual-core machine

From: Chris Moore
Subject: Re: Building cvs emacs on a dual-core machine
Date: Fri, 22 Dec 2006 15:39:40 +0100
User-agent: Gnus/5.11 (Gnus v5.11) Emacs/22.0.91 (gnu/linux)

Eli Zaretskii <address@hidden> writes:

> There's nothing to prevent a parallel build from compiling 2 Lisp
> files at the same time, is there?

Yes, there is, at least on GNU/Linux make isn't used to determine
which Lisp files to compile.

During bootstrapping, it's done using the shell:

  [...] for el in [...] $els; do echo Compiling $el; [...]; done

and during 'make recompile', it's done using emacs itself:

  ../src/emacs -batch --no-site-file --multibyte --eval
  (batch-byte-recompile-directory 0) /home/chris/programs/emacs2/lisp

Neither of these will honour make's --jobs=2 flag.  In fact using
--jobs=2 makes the build ever so slightly slower on this dual-core

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