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Date: Fri, 13 Oct 2006 22:35:27 -0600
From: Eric Blake <ebb9 AT byu DOT net>
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To: cygwin AT cygwin DOT com, tom_lee01 AT hotmail DOT com
Subject: Re: cywin shared dll
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According to Tom Lee on 10/13/2006 8:56 PM:
> Hi Eric,
> 
> Thanks for your help.
> 
>> That's the problem.  You should only ever have a single version of
>> cygwin1.dll installed anywhere on your system.  Delete the old copy, and
>> just put the new one on the path.
> 
> If I want to distribute one command for the end user to use and don't
> want to have
> a full installation. Also, I don't know if the user has the cygwin
> pre-installed or not.

It sounds like you are setting yourself up to be a
http://cygwin.com/acronyms/#3PP.  Search the mailing list archives for
better ideas.  You are not the first to ask questions on how to portably
detect whether a random machine has cygwin installed; and the advice from
this list is if cygwin is already installed, DO NOT TRY to install a
second copy of cygwin1.dll.  Instead, inform the user if their installed
version is out of date and they need an upgrade to run your software.

> 
> Are you sure PATH works?
> In the PATH c:\mycgwin is ahead of system path and x:\cygwin\bin is even
> not in the path.
> It still failed with the same error.

Altering PATH does not help if a copy of cygwin1.dll is already loaded in
memory.

- --
Life is short - so eat dessert first!

Eric Blake             ebb9 AT byu DOT net
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