FreeBSD Port: devel/libepoll-shim Build failure

[Jan Beich]

David Gessel <gessel at blackrosetech.com> writes:

> root at claudel:/usr/ports/devel/libepoll-shim # make install clean
> /!\ WARNING /!\
>
> Ports Collection support for your FreeBSD version has ended, and no ports are
> guaranteed to build on this system. Please upgrade to a supported release.

Upgrade FreeBSD then try again. Otherwise, downgrade devel/libepoll-shim
or the whole ports/ tree to a revision that worked before. See also
_UNSUPPORTED_SYSTEM_MESSAGE in Mk/bsd.port.mk.

ports/ is a moving target, so it supports different FreeBSD versions at
different points in time. After EOL compatibility bridges maybe burned down.
The impact depends on whether a major or minor FreeBSD version reached EOL
and how much time has passed since then.

> src/libepoll-shim.so.0: undefined reference to `sigandset'
> src/libepoll-shim.so.0: undefined reference to `sigisemptyset'

Apply https://svnweb.freebsd.org/changeset/base/355898
or    https://github.com/jiixyj/epoll-shim/commit/e0ab35452121