Date: Mon, 6 Jan 1997 10:14:34 -0600 (CST)
From: Alaric Dailey <alaric AT oasis DOT novia DOT net>
To: Eli Zaretskii <eliz AT is DOT elta DOT co DOT il>
cc: djgpp AT delorie DOT com
Subject: Re: GUILE port?
In-Reply-To: <Pine.SUN.3.91.970106164519.25502A-100000@is>
Message-ID: <Pine.SOL.3.93.970106101108.23683A-100000@oasis.novia.net>
MIME-Version: 1.0
Content-Type: TEXT/PLAIN; charset=US-ASCII

On Mon, 6 Jan 1997, Eli Zaretskii wrote:

> 
> On 6 Jan 1997, Alaric Dailey wrote:
> 
> > : all_subdirs=`cat $srcdir/*/PLUGIN/REQ $srcdir/*/PLUGIN/OPT /dev/null |
> > : tsort | xargs echo`
> > 
> > it looks like this is building a list of all the subdirectories under
> > $srcdir (whereever this is defined in the makefile) catting the files
> > (which will do the same thing as DOS "type"  sorting the output making
> > sure there are no duplicate listings and then xargs will put the whole
> > damn shmear on a single line.
> 
> FYI, you can do the same on MSDOS even if you don't have bash installed. 
> If you use the port of Make 3.75, just replace the `..` with a call to the
> $(shell) built-in function, like so: 
> 
>   subdir = $srcdir/*/PLUGIN
>   all_subdirs = \
>     $(shell cat $subdir/REQ $subdir/OPT /dev/null | tsort | xargs echo)
> 
> The difference between the two constructs is that in the last variant, the
> commands are run when all_subdirs is *defined*, while in the second they
> are run when all_subdirs is *used* (elsewhere in the Makefile). 
> 
all I was trying to do was help Alaric out he didn't know what the line
was doing, obviously he is not overly knowledgable about unix so I tried
to put it in terms that could be understood ( I have a terrible time not
using unix descriptions and commands under dos because I make my living
working with unix. )