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Date: Sat, 07 Aug 2010 22:23:39 +0100
From: cbsa01 AT bangor DOT ac DOT uk
To: moss AT cs DOT umass DOT edu
Cc: llio AT testun DOT co DOT uk, cygwin AT cygwin DOT com
Subject: Re: Moses with Cygwin on Windows 7
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Dear Eliot,

many thanks for your reply.  On why we need cygwin: the language model=20=
=20
we use is IRSTLM. The native windows build of Moses does not currently=20=
=20
use IRSTLM LMs.

I have been reading up a bit about debasing DLLs, and I gather from=20=20
http://www.codeproject.com/KB/DLL/RebaseDll.aspx that the purpose is=20=20
to avoid either two or more DLLs using the same preferred base=20=20
addresses, or the overheads of relocation.  However, on=20=20
http://social.msdn.microsoft.com/Forums/en-US/vcgeneral/thread/bac7e300-f3d=
f-4087-9c4b-847880d625ad, it is suggested that from Vista onwards, it is be=
tter to leave this to the operating systems's ASLR (Address space layout ra=
ndomization) in order to help defeat a ?return-to-libc? attack. Do you agre=
e with this? If it is still necessary to do a rebase, what does your script=
 do that rebaseall=20=20
doesn't?

Re UAC prompts: this does look annoying but corporate security=20=20
regulations may prevent us from turning it off completely.  Is there=20=20
some way to turn it off for individual programs without using=20=20
third-party software?

Thank you,
Llio Humphreys





Quoting Eliot Moss <moss AT cs DOT umass DOT edu>:

> Cygwin under Windows 7 works fine for me.  The things
> I noticed were:
>
> - It was helpful to some things, especially perl and things
>   built from it, to rebase all the dlls.  I have a script
>   for that, though rebaseall may do it for you.
>
> - Since I am just a single user, etc., I disable the Windows
>   Vista/7 UAC controls so that more things run without annoying
>   popups to ask permission (and some things just won't run
>   without further fiddling if UAC is on).
>
> I think people have resolved UAC issues with further work,
> but it seems to be a topic that comes up from time to time.
> That is, for sophisticated things it can be tricky to get
> them going with UAC on.
>
> A quick glance at Moses suggests that it can just be done
> under regular Windows using Visual Studio, so why cygwin at all?
>
> -- Eliot Moss



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