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Message-ID:	<51E5B4CF.503@cwilson.fastmail.fm>
Date:	Tue, 16 Jul 2013 17:02:07 -0400
From:	Charles Wilson <cygwin AT cwilson DOT fastmail DOT fm>
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To:	The Cygwin Mailing List <cygwin AT cygwin DOT com>
Subject:	Re: How does 'alternatives' find a file?
References:	<E1UzAHj-0005MB-EL AT elasmtp-curtail DOT atl DOT sa DOT earthlink DOT net> <51E5A8E7 DOT 8010307 AT cygwin DOT com>
In-Reply-To:	<51E5A8E7.8010307@cygwin.com>

On 7/16/2013 4:11 PM, Larry Hall (Cygwin) wrote:
> On 7/16/2013 2:46 PM, Henry Baker wrote:
>> I've had to create a cygwin tree from a circa 2011 tar dump, and I've
>> had  a devil of a time trying to make it work.
> Looking at the ones I have in /etc/alternatives, they are the first kind
> listed (or the ones that you say work for you).  Make sure the DOS SYSTEM
> attribute (and only that attribute) is set.  Also, if the tree doesn't
> come from Cygwin 1.7 days and you're not using the same character set as
> you were then, you'll need to recreate the symlinks to get them working
> again.

Just use the alternatives tool itself to forcefully recreate the 
symlinks -- in fact, there's a script that will do that for you. Look in 
/etc/postinstall/ for the files that have "gcc" somewhere in their name. 
Find the ones that invoke /usr/sbin/alternatives and run the appropriate 
ones (whichever ones set the default to gcc4 rather than gcc3).

--
Chuck


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