Digium Dahdi Card after 13-->14 upgrade

I ran the upgrade tool from the linux cli on our backup FreePBX server yesterday. Everything works except it doesn’t see the Digium TE405P card. I have read the other posts on the subject but nothing seems to match exactly what I am seeing.

The problem is that I can’t get the Digium driver to compile. When I run the make command it tells me this:

   You do not appear to have the sources for the 3.10.0-862.9.1.el7.x86_64 kernel installed.

The devel package is installed. Do I need to install the entire kernel source? I saw a thread on another forum where the guy did this and it still didn’t resolve the problem.

Thoughts?

You should only need to have the kernel source.