Comment 9 for bug 1412441

llvm-3.7 is not our default in xenial yet. So either libclc should be switched to use 3.6 or our default should be updated to 3.7.

Also, looks like clang isn't technically in main yet. It's source package (llvm-toolchain-3.6) is. But it hasn't been promoted yet. I'd have to go see if that was just because we didn't need to yet or if there was a problem with it.