Element voaacenc is missing

Hello,

Recently we've switched to install our GStreamer-based project to using the gst-build system. We're using Ubuntu 18.04 and checking out version 1.18.4 of gst-build.

We've experienced an issue that for an old pipeline of ours which used the element voaacenc that he isn't able to build that pipeline. The bad plugin is actually being installed on the machine, on the process of gst-build phase. But when I'm trying to inspect the element on the machine using gst-inspect he doesn't find the element as well.

Is there a possibility that we need to mention specific features we wish to get out of gst-plugins-bad or maybe I'm missing something?

Thanks