Index: unittests/CMakeLists.txt
===================================================================
--- unittests/CMakeLists.txt
+++ unittests/CMakeLists.txt
@@ -1,11 +1,9 @@
 add_custom_target(UnitTests)
 set_target_properties(UnitTests PROPERTIES FOLDER "Tests")
 
-if (APPLE)
-  set(CMAKE_INSTALL_RPATH "@executable_path/../../lib")
-else(UNIX)
-  set(CMAKE_INSTALL_RPATH "\$ORIGIN/../../lib${LLVM_LIBDIR_SUFFIX}")
-endif()
+# People tend to run the tests _before_ installing, so we don't want the install
+# rpath here.
+set(CMAKE_BUILD_WITH_INSTALL_RPATH OFF)
 
 function(add_llvm_unittest test_dirname)
   add_unittest(UnitTests ${test_dirname} ${ARGN})