Can anyone give a quick answer regarding RtpEngine and support for iLBC codec?

I have followed the instructions how to build and enable codecs according to the GitHub manual. But iLBC codec is missing when performing "rtpengine --codecs".

I have tried to google around for iLBC references, but the only thing that I have found so far is libilbc, which is a lib for ffmpeg, and it looks like ffmpeg needs to be recompiled.

What is the correct/fastest way forward for getting iLBC support on RtpEngine on debian 9?

The purpose it to test a-law to iLBC transcoding.

Best Regards,

Lars