select call on a UDP socket with BSD library?

[Sebastian Huber]

On 01/09/2020 04:48, Chris Johns wrote:
>> The fd in this instance is 77 and I have RTEMS setup for 200 file descriptors.
>> Are there any other LibBSD configuration parameters I should be aware of?
> I am sorry but 77 is to high because newlib by default limits the fd set size to
> 64...
> 
> #  ifndef       FD_SETSIZE
> #       define  FD_SETSIZE      64
> #  endif
> 
> I suggest you define `FD_SETSIZE` on the command line to the compiler to 256 and
> see what happens. It should be fine to do this.

The FD_SETSIZE limit in Newlib also applies to the old network stack.

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Sebastian Huber, embedded brains GmbH

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