From: Nick Dokos <nicholas.dokos@hp.com>
To: "Allen S. Rout" <asr@ufl.edu>
Cc: nicholas.dokos@hp.com, emacs-orgmode@gnu.org
Subject: Re: Not overwriting unchanged source code files when tangling
Date: Tue, 22 Nov 2011 16:43:17 -0500 [thread overview]
Message-ID: <12238.1321998197@alphaville.americas.hpqcorp.net> (raw)
In-Reply-To: Message from "Allen S. Rout" <asr@ufl.edu> of "Tue, 22 Nov 2011 16:17:13 EST." <jah3gq$utq$1@dough.gmane.org>
Allen S. Rout <asr@ufl.edu> wrote:
> On 11/19/2011 01:32 PM, Holger Hoefling wrote:
> > Hi everyone,
> >
> > I wanted to thank everyone for their helpful suggestions and wanted to
> > share the best solutions I heard of and found.
> >
> > One solution is to include a rule in the makefile for every sourcecode
> > file that that copies it and only updates the copy if something has
> > changed (see Nick's email below).
> >
>
> Or tangle to one directory, and then copy to another; then there's
> one rule for all of the transitions.
>
>
> work/%: tangle/%
> @cmp --silent $< $@ || ( echo "Updating $@" ; cp $< $@ )
>
> I liked Nick's "cmp" invocation; I started out with diff. :)
>
I first saw it in Kernighan and Pike's "Unix Programming Environment"
(1984!). I'm sure the trick went back even further.
Nick
next prev parent reply other threads:[~2011-11-22 21:43 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-11-18 13:17 Not overwriting unchanged source code files when tangling Holger Hoefling
2011-11-18 14:23 ` Brian Wightman
2011-11-18 16:46 ` Tom Prince
2011-11-18 17:14 ` Brian Wightman
2011-11-18 14:27 ` Sebastien Vauban
2011-11-18 17:02 ` Carsten Dominik
2011-11-18 17:28 ` Brian Wightman
2011-11-18 19:42 ` Eric Schulte
2011-11-18 20:10 ` Achim Gratz
2011-11-18 20:24 ` Eric Schulte
2011-11-19 0:49 ` Holger Hoefling
2011-11-18 19:01 ` Holger Hoefling
2011-11-18 19:32 ` Nick Dokos
2011-11-19 0:51 ` Holger Hoefling
2011-11-19 4:00 ` Nick Dokos
2011-11-19 6:58 ` Holger Hoefling
2011-11-19 18:32 ` Holger Hoefling
2011-11-22 21:17 ` Allen S. Rout
2011-11-22 21:43 ` Nick Dokos [this message]
2011-11-19 18:06 ` cberry
2011-11-18 19:51 ` Achim Gratz
-- strict thread matches above, loose matches on Subject: below --
2011-11-19 15:31 Rustom Mody
2011-11-19 15:51 ` Rustom Mody
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