Cheapest hardware for Ada development (ARM7TDMI)?

[Chris Sparks]

Ralf Corsepius wrote:

>On Wed, 2006-07-05 at 08:11 -0500, Joel Sherrill wrote:
>  
>
>>Ralf Corsepius wrote:
>>
>>    
>>
>>>On Wed, 2006-07-05 at 00:30 +0200, Andreas Schwarz wrote:
>>> 
>>>
>>>      
>>>
>>>>Hi,
>>>>
>>>>I would like to do embedded Ada development, nothing specific, just for
>>>>fun and to get some experience. What is the cheapest hardware I can use
>>>>with RTEMS and GNAT? I have experience with the ARM7TDMI-based
>>>>controller families by Atmel and Philips. Is there any chance I can port
>>>>RTEMS to such a target (e.g. 256K ROM, 64K RAM) and make it work with GNAT?
>>>>   
>>>>
>>>>        
>>>>
>>>There is almost no chance to get this working, for 2 reasons:
>>>1. Getting gnat functional is very hard in general.
>>> 
>>>
>>>      
>>>
>>Granted but Laurent Guerby's instructions are on the RTEMS Wiki.
>>    
>>
>Well, they only work if you are willing to abandon multilibs and to
>replace your system's compiler. To me, this is beyond reason.
>
>And .. if you're on a multilib'ed host, life will be even one magnitude
>more unpleasant.
>
>>>2. Arm support in GNAT is not implemented in GCC.
>>> 
>>>
>>>      
>>>
>>I haven't tried it in a while so I will have to trust you on this one.
>>    
>>
>What I said applies to gcc < 4.1.x.
>
>Also remember: Once we should start shipping multilib'ed RTEMS binary
>libraries, we will have to drop GNAT/RTEMS unless GNAT finally starts
>supporting multilibs.
>
>Ralf
>  
>
I was trying to read up on what "multilib" was all about and I still 
don't understand what GNAT has
to do with "multilib".  Wouldn't all the architecture variations within 
a family of processors be handled
by the GCC back end?

Chris Sparks