[zeromq-dev] [PATCH] detect (select poll epoll_ctl kqueue) at configure time

[Martin Sustrik]

On 10/04/2010 03:36 PM, Martin Lucina wrote:

> I can kind of see where you're going with this; you want to detect the
> polling mechanism in a generic way based off the availability of a system
> call rather than based off a check for a particular OS. This is how things
> would normally be done with autoconf but it's not been done that way with
> 0MQ and I'd rather not change this now unless we get added value out of it;
> see below.

Actually, it cannot be done. Given that /dev/poll polling system has no 
special API and that runtime checks are impossible because of 
cross-compiling, there's no way to determine availability of /dev/poll 
in autoconf.

Determining the polling mechanism based on the OS seems to be the only 
sensible solution.

Interestingly, we've originally got it right not because of deep 
knowledge of the problem, rather by sheer luck.

Martin