From: Robert Pluim <rpluim@gmail.com>
To: Alan Mackenzie <acm@muc.de>
Cc: Eli Zaretskii <eliz@gnu.org>,
monnier@iro.umontreal.ca, emacs-devel@gnu.org
Subject: Re: Speeding up the bootstrap build - a quick hack.
Date: Thu, 20 Jan 2022 10:25:26 +0100 [thread overview]
Message-ID: <87fspilpx5.fsf@gmail.com> (raw)
In-Reply-To: <YeiDbqXfJiH24axf@ACM> (Alan Mackenzie's message of "Wed, 19 Jan 2022 21:32:30 +0000")
>>>>> On Wed, 19 Jan 2022 21:32:30 +0000, Alan Mackenzie <acm@muc.de> said:
Alan> This was surprisingly difficult to solve. There appears to be no way in
Alan> make to set a variable depending on what the target is. The make manual
Alan> doesn't say this explicitly, it just depends on vagueness. After an hour
Alan> of searching for such a feature, it gradually dawns on you that there is
Alan> no such feature, even though one might be expected. I'm glad the Emacs
Alan> manuals aren't like that.
"Target-specific Variable Values" in the Gnu Make info manual. eg
Makefile:
FOO=bar
default:
@echo FOO=$(FOO)
foo: FOO=foo
foo:
@echo FOO=$(FOO)
results:
> make
FOO=bar
> make foo
FOO=foo
Robert
--
next prev parent reply other threads:[~2022-01-20 9:25 UTC|newest]
Thread overview: 46+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-01-17 20:26 Speeding up the bootstrap build - a quick hack Alan Mackenzie
2022-01-17 20:55 ` Stefan Monnier
2022-01-18 11:56 ` Alan Mackenzie
2022-01-18 13:14 ` Stefan Monnier
2022-01-18 20:27 ` Alan Mackenzie
2022-01-18 20:48 ` Stefan Monnier
2022-01-19 11:50 ` Alan Mackenzie
2022-01-19 14:34 ` Stefan Monnier
2022-01-19 15:24 ` Stefan Monnier
2022-01-18 13:16 ` Robert Pluim
2022-01-18 14:04 ` Alan Mackenzie
2022-01-18 14:13 ` Robert Pluim
2022-01-18 14:24 ` Stefan Monnier
2022-01-18 14:35 ` Robert Pluim
2022-01-18 15:13 ` Robert Pluim
2022-01-18 16:50 ` Eli Zaretskii
2022-01-18 16:09 ` Andrea Corallo
2022-01-18 18:36 ` Stefan Monnier
2022-01-18 14:05 ` Stefan Monnier
2022-01-18 14:18 ` Robert Pluim
2022-01-17 21:03 ` Lars Ingebrigtsen
2022-01-18 0:46 ` Po Lu
2022-01-18 14:17 ` Eli Zaretskii
2022-01-18 18:40 ` Stefan Monnier
2022-01-18 19:34 ` Eli Zaretskii
2022-01-18 20:28 ` Stefan Monnier
2022-01-18 20:35 ` Alan Mackenzie
2022-01-18 20:50 ` Stefan Monnier
2022-01-19 11:10 ` Alan Mackenzie
2022-01-19 11:46 ` Eli Zaretskii
2022-01-19 16:50 ` Alan Mackenzie
2022-01-19 17:03 ` Eli Zaretskii
2022-01-19 21:32 ` Alan Mackenzie
2022-01-20 9:25 ` Robert Pluim [this message]
2022-01-20 11:35 ` Alan Mackenzie
2022-01-20 13:18 ` Robert Pluim
2022-01-20 14:54 ` Robert Pluim
2022-01-20 18:48 ` Alan Mackenzie
2022-01-20 22:29 ` Stefan Monnier
2022-01-21 8:17 ` Robert Pluim
2022-01-21 10:18 ` Stephen Leake
2022-01-21 10:42 ` David Engster
2022-01-21 10:51 ` Robert Pluim
2022-01-24 19:43 ` Andrea Corallo
2022-01-24 19:54 ` Eli Zaretskii
2022-01-24 20:15 ` Andrea Corallo
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