Path: utzoo!utgpu!jarvis.csri.toronto.edu!cs.utexas.edu!usc!snorkelwacker!bloom-beacon!EXPO.LCS.MIT.EDU!rws
From: rws@EXPO.LCS.MIT.EDU (Bob Scheifler)
Newsgroups: comp.windows.x
Subject: Re: R3 -> R4 - pitfalls for applications built under R3 on Suns ??
Message-ID: <9002192121.AA01803@expire.lcs.mit.edu>
Date: 19 Feb 90 21:21:27 GMT
References: <EHO.90Feb16180108@word.Princeton.EDU>
Sender: daemon@athena.mit.edu (Mr Background)
Organization: The Internet
Lines: 10


    However, I've many applications
    built/installed under R3 (e.g. GNU Emacs 18.55, xdvi, Saber-C, ...etc..) and
    I really don't want to touch them otherwise I'll need to rebuild/reinstall a
    *lot* of stuff.

You should certainly keep your R3 binaries around for a while, they should
work fine against an R4 server (although for some you may have to enable
"bug compatibility" mode in the server).  The R3->R4 transition is not an
"all or nothing" situation, you can move gradually.