Hi Gregg!
This new one is one of those who supports Linux via that WSL function. I've got SuSe SLES12 installed. Has anyone gotten builds to work using something appropriate from the same setup? If need be I'll snag a different WSL set.
Building coreboot on Debian-flavored WSL worked for me. You have to make sure though that the path to the coreboot directory doesn't contain spaces; I just put the repo under I think C:\projects\coreboot which IIRC shows up as /mnt/c/projects/coreboot under WSL. So if you can build coreboot under native SuSe SLES12 I don't see a reason why it shouldn't work under WSL.
Regards Felix