Index: utils/unittest/CMakeLists.txt
===================================================================
--- utils/unittest/CMakeLists.txt
+++ utils/unittest/CMakeLists.txt
@@ -37,6 +37,9 @@
   list(APPEND LIBS pthread)
 endif()
 
+# Delay building until the tests pull it in, and avoid installing it
+set(EXCLUDE_FROM_ALL ON)
+
 add_llvm_library(gtest
   googletest/src/gtest-all.cc