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From: Stefan Monnier <monnier@iro.umontreal.ca>
To: Eli Zaretskii <eliz@gnu.org>
Cc: Andreas Schwab <schwab@linux-m68k.org>,
	joakim@verona.se, emacs-devel@gnu.org
Subject: Re: revno 101399 fails to build
Date: Mon, 13 Sep 2010 17:52:59 +0200	[thread overview]
Message-ID: <jwvfwxdtzgb.fsf-monnier+emacs@gnu.org> (raw)
In-Reply-To: <83vd695096.fsf@gnu.org> (Eli Zaretskii's message of "Mon, 13 Sep 2010 13:52:21 +0200")

>> > ...
>> > In toplevel form:
>> > calc/calc-help.el:30:1:Error: Required feature `calc-ext' was not provided
>> 
>> Do you build with more that one job in parallel?  In this case it can
>> happen that one emacs process writes out the elc file while another one
>> is reading the same (partial) file at the same time.  To fix that the
>> creation of the elc file need to be made atomic.

> Or specify explicit dependencies in the Makefile.  Or get Emacs to
> generate such dependencies given the `require's.

BTW, I did play with that a long time ago and the result was that it
works to some extent but it's not enough: many dependencies come from
autoloaded functions/macros, there are circular require-dependencies,
many dependencies come from preloaded files without any `require'
in sight.
Maybe a more promising direction is to let the byte-compiler emit
dependencies as it goes, just like gcc can do.


        Stefan



  reply	other threads:[~2010-09-13 15:52 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-09-10  5:40 revno 101399 fails to build joakim
2010-09-10  6:27 ` Glenn Morris
2010-09-10  7:48   ` joakim
2010-09-11  4:58     ` Stephen J. Turnbull
2010-09-13 12:08       ` Eli Zaretskii
2010-09-14 12:22         ` Stephen J. Turnbull
2010-09-10  8:37 ` Andreas Schwab
2010-09-10  8:52   ` joakim
2010-09-13 11:52   ` Eli Zaretskii
2010-09-13 15:52     ` Stefan Monnier [this message]
2010-09-13 17:05       ` Eli Zaretskii
2010-09-13 16:17     ` Glenn Morris

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