mesa-dri build problem

[C C]

Hello dear list members,

I'm having trouble to build the port on 12.0-RELEASE-p9 regardless of
whether or not any options for this port are set.

checking for AMDGPU... yes
configure: error: LLVM target 'amdgpu' not enabled in your LLVM build.
Required by radv.
===>  Script "configure" failed unexpectedly.
Please report the problem to x11 at FreeBSD.org [maintainer] and attach the
"/wrkdirs/usr/ports/graphics/mesa-dri/work/mesa-18.3.2/config.log" including
the output of the failure of your make command. Also, it might be a good
idea
to provide an overview of all packages installed on your system (e.g. a
/usr/local/sbin/pkg-static info -g -Ea).
*** Error code 1

I'm trying to building using poudriere, and in the past the port built
successfully. As far as I understand the default llvm in build jail uses a
standard llvm build. I have limited skills with FreeBSD, but generally
enough skills with opensource software. Any help is appreciated, thanks.