Commits
Korn, Uwe authored and Kouhei Sutou committed 9c332e7b079
ARROW-4290: [C++/Gandiva] Support detecting correct LLVM version in Homebrew Author: Korn, Uwe <Uwe.Korn@blue-yonder.com> Author: Uwe L. Korn <uwelk@xhochy.com> Closes #3429 from xhochy/ARROW-4290 and squashes the following commits: 4617b2f8 <Uwe L. Korn> Simplify check for brew 1746e928 <Korn, Uwe> ARROW-4290: Support detecting correct LLVM version in Homebrew