Adding new board support option

[Joel Sherrill]

Peter Dufault wrote:
> On Oct 20, 2009, at 5:30 , Ralf Corsepius wrote:
>
>   
>> However, you should really check, if you actually want an exported/ 
>> global define in bspopts.h or an AM_CONDITIONAL.
>>     
>
> You are correct, I don't want either of them.  I am now  
> unconditionally adding the new network driver and I assume it will be  
> resolved at link time by the BSP user.
>   
You do need to make sure configure.ac and Makefile.am
turn it off if networking is disabled.   Any BSP with a
NIC driver should be an example of this.

Since this isn't a required part of every executable,
building it anytime networking is enabled is OK unless
you find yourself needing to know you are running
on board A or board B which uses the same NIC but
has differences you can't detect at run-time.

If any of that makes sense. :-D
> Thanks -
>
> Peter
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Joel Sherrill, Ph.D.             Director of Research & Development
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