You can have more than 1 libc installed, but only one is linked as libc.so, if I recall correctly.   With an alternate libc named libc.3.5.0.so for example (made up numbers) then DESPlugin.so can resolve its external needs.
 
I tried generating and building the VM and ran into issues.  What you need to do is take a 3.7 or 3.8 image, load Crypto package and then launch VMMaker and generate this plugin external.  You may need to generate all internal with DESPlugin external to meet the platform needs.   Then you can go to the source and build it.  You will need to read the instructions for building the VM on linux for the details.
 
I hope this helps,
Robert


----- Original Message ----
From: Malte Zacharias <malte.zacharias at nordakademie.de>
To: squeak-dev at lists.squeakfoundation.org
Sent: Wednesday, August 23, 2006 10:47:27 AM
Subject: Re: DES Encryption


Could you explain that further? Getting another libc installed is 
not directly my preferred option...
> A DESPlugin class comes along with the Cryptography package.  From
> memory, you load up all the VMMaker stuff along with Cryptography,
> then you can generate the plugin.
> 
> Robert
> 
> On Aug 20, 2006, at 12:27 PM, Ron Teitelbaum wrote:
> 
>> All,
>>
>> I wasn't able to find the source code for DESPlugin.  I'm still
>> looking into
>> it.  Does anyone know where the source code is?  I was hoping to
>> see it in
>> the VMMaker but it is not there.
>>
>> Thanks!
>>
>> Ron Teitelbaum
>>
>>
>>> From: Malte Zacharias
>>> Sent: Sunday, August 20, 2006 2:10 PM
>>
>>> Ron Teitelbaum wrote:
>>>
>>>> Hello Malte,
>>>>
>>>> You can find the plugins here:
>>>> http://minnow.cc.gatech.edu/squeak/uploads/2410/
>>> Thank you, unfortunately the .so file there is linked
>>> against a different libc version as mince, is the source
>>> available somewhere so I could recompile?
>>>> Just place the file in your squeak directory.  Use the Dll for
>>>> Windows
>>>> platforms.
>>>
>>>
>>>
>>
>>
>>
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