Message-ID: <15296.28192.110207.516151@mithrandir.hornik.net>
Date: 2001-10-07T15:00:48Z
From: Kurt Hornik
Subject: src/modules/Makefile.in: What is the (practical) difference betw. SUBDIRS and MODULES?
In-Reply-To: <Pine.GSO.4.31.0110061228550.17118-100000@auk.stats>
>>>>> Prof Brian D Ripley writes:
> On Sat, 6 Oct 2001, Thomas Hoffmann wrote:
>> As the subject says, one has
>>
>> SUBDIRS = X11 gnome internet lapack vfonts
>>
>> MODULES = $(R_GUIS) internet lapack vfonts
>>
>> It is my understanding, that there is a 1:1 correspondence between
>> subdirs and modules. If this were true, then one could use one of
>> both in all places. Or do I overlook something here?
> Not all R_GUIS might be supported: gnome often is not. So there is
> on my Solaris system a gnome subdir but no gnome module.
> Your assumption of a 1:1 correspondence is incorrect for my system, which
> has
> R_GUIS = X11
> in $(top_builddir)/Makeconf.
> MODULES is used for shared libraries to be made (to be dynamically
> loaded). SUBDIRS is used for things to be cleaned and to be
> distributed.
> One could argue that MODULES should be used for things to be cleaned,
> *BUT* that might have be changed by a re-configure, so SUBDIRS looks
> safer.
> [I'm not the author of any of this, and the choices made look right to
> me.]
Thanks :-)
In general we always use SUBDIRS for cleaning up. We must do that
because e.g. configure could have created a Makefile in a subdir which
make distclean must remove.
[One could argue that targets that build should always use SUBDIRS too
but that can make things rather tricky.]
-k
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