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From: Hugh Myers <hsmyers AT gmail DOT com>
Date: Fri, 22 Oct 2010 05:06:42 +0000
Message-ID: <AANLkTikYnP88CBsXQZk_XPF34--yGDA4n=QRFuQHFJ_Z@mail.gmail.com>
Subject: Re: resolving directories
To: cygwin AT cygwin DOT com
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Much thanks for the information. I did shudder before I implemented
this 'solution' and agree that if I'd known, your approach would have
been very much cleaner--- for that matter had I known, I would have
upgraded the machine to match the source box and life would have been
without this little speed bump. Thanks again!

--hsm

On Fri, Oct 22, 2010 at 5:01 AM, Andy Koppe <andy DOT koppe AT gmail DOT com> wrote:
> On 21 October 2010 21:56, Hugh Myers wrote:
>> In a recent comedy of errors, I moved an executable from one machine
>> to another. I was at least bright enough to move its associated .dll
>> and even the .a for good measure. Not to surprisingly this did not
>> result in a working program. After some thought I determined that the
>> difference from one cygwin environment to another was the problem.
>> Given a two year difference this seemed like the culprit.
>> Unfortunately now is not a good time to upgrade the target machine, so
>> I cheated and copied the first machines cygwin1.dll (isolated in the
>> same directory along with the executable) to the second machine---
>> happiness ensued!
>
> Just to be clear: such a Frankenstein setup is utterly unsupported.
>
> If that machine really can't be upgraded properly, a better approach
> might have been to install Cygwin 1.5 alongside 1.7 on your
> development machine, by pointing http://cygwin.com/setup-legacy.exe at
> a different base directory, and use that to build your program before
> moving it across. Or just build it on the other machine in the first
> place. (This is assuming you've got the source of course.)
>
> Cygwin 1.5 of course is now also unsupported, but at least it's proven it=
self.
>
>
>> Sort of. My executable while it worked, was unable
>> to resolve a simple path like /usr/data/files_that_it_needs. Rather
>> than giving in to despair, I idly thought to try
>> /cygdrive/c/cygwin/usr/data/files_that_it_needs--- worked like a
>> charm.
>>
>> So with that as background would I be correct in that one of the
>> significant differences from version 1.5.25 to version 1.7.7 might lie
>> in directory resolution?
>
> Yes: http://cygwin.com/cygwin-ug-net/ov-new1.7.html#ov-new1.7-file
>
> Andy
>
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