diff --git a/cpp/cmake_modules/CompilerInfo.cmake b/cpp/cmake_modules/CompilerInfo.cmake
index e1c821cca5d..52f55807d03 100644
--- a/cpp/cmake_modules/CompilerInfo.cmake
+++ b/cpp/cmake_modules/CompilerInfo.cmake
@@ -34,6 +34,11 @@ elseif("${COMPILER_VERSION_FULL}" MATCHES ".*based on LLVM.*")
 elseif("${COMPILER_VERSION_FULL}" MATCHES "clang-70[0-9]\\..*")
   set(COMPILER_FAMILY "clang")
 
+# clang on Mac OS X, XCode 8.
+elseif("${COMPILER_VERSION_FULL}" MATCHES ".*clang-8")
+  set(COMPILER_FAMILY "clang")
+  set(COMPILER_VERSION "3.8.0svn")
+
 # gcc
 elseif("${COMPILER_VERSION_FULL}" MATCHES ".*gcc version.*")
   set(COMPILER_FAMILY "gcc")