[PATCH] D34955: [Basic] Detect Git submodule version in CMake

[Peter Collingbourne via Phabricator via cfe-commits]

pcc added a comment.

FYI, I don't think `HEAD` on its own will work because it is not necessarily updated on every commit, see discussion on https://reviews.llvm.org/D31985.


https://reviews.llvm.org/D34955