Illegal option -o pipefail

[xm74]

I'm trying to install PHP 5.6 from your repo but getting. Do you have any ideas how to deal with this?

root@php56:/usr/local/ports/php56/lang/php56 # make install
set: Illegal option -o pipefail
===> Options unchanged
/!\ 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.

===>   NOTICE:

This port is deprecated; you may wish to reconsider installing it:

Security Support ends on 31 Dec 2018.

It is scheduled to be removed on or after 2019-01-01.

===>  License PHP301 accepted by the user
set: Illegal option -o pipefail
*** Error code 2

Stop.
make[1]: stopped in /usr/local/ports/php56/lang/php56
*** Error code 1

Stop.
make: stopped in /usr/local/ports/php56/lang/php56