From owner-freebsd-current  Tue Oct  7 01:45:01 1997
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To: Luigi Rizzo <luigi@labinfo.iet.unipi.it>
cc: tlambert@primenet.com, gurney_j@resnet.uoregon.edu,
        freebsd-current@FreeBSD.ORG
Subject: Re: how to detect different kernel code (select or poll) 
In-reply-to: Your message of "Tue, 07 Oct 1997 08:13:12 BST."
             <199710070713.IAA07641@labinfo.iet.unipi.it> 
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Date: Tue, 07 Oct 1997 01:44:06 -0700
From: Amancio Hasty <hasty@rah.star-gate.com>
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You are lucky this time. The way I see it is patch #1 for freebsd 2.2,
patch # 2 for freebsd 2.2 vs freebsd 3.0 and so on . 

The longer 3.0 stays in active development the harder is going to be
maintaining both 2.2 and 3.0

	Amancio

>From The Desk Of Luigi Rizzo :
> > Hi,
> > 
> > I think that our current problem is that the poll code is not in 
> > 2.2 and whoever checked in the code  should have at least thought of the
> > incompatibility issues . One option is not to support 2.2
> > which the poll check in so far seems to imply at least with
> 
> making things unsupported in the RELEASE is not an option in my
> opinion, unless there are strong technical motivations against it,
> and this is not the case.
> 
> I browsed through the various files involved in the poll change
> and could not find any way the preprocessor could tell the difference.
> So I have used a new macro, USE_POLL, which must be defined in
> sound.h by users who want to compile this code on 3.0.
> 
> Fortunately it is used only in one function and one other place, so its
> removal should be fine when this code finally finds its way into 2.2.X
> 
> I am finishing the modifications and will put a new snap of the code on
> my web server quite soon.
> 
> 	Cheers
> 	Luigi