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X-Authentication-Warning:	slinky.cs.nyu.edu: pechtcha owned process doing -bs
Date:	Tue, 9 Sep 2003 15:25:51 -0400 (EDT)
From:	Igor Pechtchanski <pechtcha AT cs DOT nyu DOT edu>
Reply-To:	cygwin AT cygwin DOT com
To:	Sam Steingold <sds AT gnu DOT org>
cc:	cygwin AT cygwin DOT com
Subject:	Re: package _version_ check
In-Reply-To:	<uk78hsrj3.fsf@gnu.org>
Message-ID:	<Pine.GSO.4.56.0309091523300.25402@slinky.cs.nyu.edu>
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	<uk78hsrj3 DOT fsf AT gnu DOT org>
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On Tue, 9 Sep 2003, Sam Steingold wrote:

> > Igor Pechtchanski <crpugpun AT pf DOT alh DOT rqh> [Tue, 9 Sep 2003 15:02:25 -0400 (EDT)]:
> > On Tue, 9 Sep 2003, Sam Steingold wrote:
> >
> > > how do I check that the installed package foo was built against cygwin
> > > 1.5 and not 1.3?
> >
> > I doubt there's a utility that'd tell you that.  At a guess, if you
> > only want to distinguish between these two versions, you should be
> > able to call "strings" on an executable from the package and look at
> > the bottom for functions added in Cygwin 1.5, but that's only going to
> > tell you if the package is using new functionality or not.
>
> shouldn't setup.exe refuse to install 1.5.3 unless all packages that
> use 1.3 are also upgraded?  like RPM and apt-get at al do?!

I think you got it backwards.  Cygwin 1.5 will run pre-1.5 programs with
no problems.  It's when you get a program compiled for 1.5 with an older
DLL (e.g., 1.3.22) that you have a problem.

FWIW, setup.ini syntax supports versioned requirements.  I don't think
"upset" (the tool that's used to generate setup.ini on the mirrors) does.
Setup itself currently does not support them either, IIRC.
	Igor
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