[SOLVED] build-essential on stretch (cubox-i)

[tempest]

I am unable to install build-essential on my new stretch install for the cubox-i.

Code:

apt-get install build-essential
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
build-essential : Depends: libc6-dev but it is not going to be installed or
                            libc-dev
                   Depends: g++ (>= 4:6.3) but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

I drilled down in the dependencies, and the root cause appears to be the version of linux-libc-dev available for this platform.

Code:

apt-get install libc6-dev
Reading package lists... Done
Building dependency tree
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
libc6-dev : Depends: linux-libc-dev (>= 4.9.30-1) but 4.8.15+rt9-1498667745 is to be installed

Any ideas?