As you know, the ability to use a bundled version of pjproject was introduced with Asterisk 13.8.0.
More info on the Asterisk Wiki
and in this email thread
Since then I’ve fixed a few issues related to older versions of Debian and CentOS which you can in these 2 patches. https://gerrit.asterisk.org//2516
Any other feedback? I’d like to get an idea of how many folks have tried it.