Relay-Version: version B 2.10 5/3/83; site utzoo.UUCP
Path: utzoo!mnetor!uunet!seismo!sundc!texsun!sun!gorodish!guy
From: guy%gorodish@Sun.COM (Guy Harris)
Newsgroups: comp.unix.wizards
Subject: Re: Multiple machine binaries from a single set of sources
Message-ID: <26384@sun.uucp>
Date: Mon, 24-Aug-87 14:18:45 EDT
Article-I.D.: sun.26384
Posted: Mon Aug 24 14:18:45 1987
Date-Received: Tue, 25-Aug-87 07:16:51 EDT
References: <8957@brl-adm.ARPA> <80@cunixc.columbia.edu>
Sender: news@sun.uucp
Lines: 14

> The idea is good, but there's an easier way to manage it if you have
> the 4.3 or System V make - use the VPATH macro to specify an alternate
> path to get sources from.  In the above case, for each bin dir (e.g.
> ../sun-2, etc.), have a makefile with following line:
> 	VPATH=../src

Beware: VPATH not only affects where "make" finds *source* files, it also
affects where it finds *target* files.  Don't put any binary files in the
"../src" directory, or it will cheerfully use those instead of building
versions in the current directory.  (Tested both with the 4.3BSD "make" and the
SunOS 3.2 "make".)
	Guy Harris
	{ihnp4, decvax, seismo, decwrl, ...}!sun!guy
	guy@sun.com