Linux GPIO support

[Marc Lehmann]

On Sat, Aug 15, 2020 at 04:45:19AM +0000, Anandu Suri <a11i_clptr2iu at outlook.com> wrote:
> Hello Marc,

Hi, and sorry for the delay.

> Not sure if this is a design decision or buggy design. But given that Linux is

It's a design bug. In any case, libev is not a linux-only library, and doe
snot attempt to implement linux-only behaviour that is at odds with portable
functionality.

You can poll for POLLPRI events using libev by using epoll and watching
the epoll file descriptor - while epoll is effectively a linux-only
function, that is fine, as it seems only to be required on linux.

There is little point in bloating libev with functionality that is a)
already supported with a bit of extra work and b) is only useful for
linux.

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