Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -77,6 +77,20 @@
     set(LLVM_SHLIB_OUTPUT_INTDIR ${LLVM_LIBRARY_OUTPUT_INTDIR})
   endif()
 
+  set(CMAKE_BUILD_WITH_INSTALL_RPATH OFF)
+  if (APPLE)
+    set(CMAKE_INSTALL_NAME_DIR "@rpath")
+    set(CMAKE_INSTALL_RPATH "@executable_path/../lib:${LLVM_LIBRARY_DIR}")
+  else(UNIX)
+    if(NOT DEFINED CMAKE_INSTALL_RPATH)
+      set(CMAKE_INSTALL_RPATH "\$ORIGIN/../lib${LLVM_LIBDIR_SUFFIX}:${LLVM_LIBRARY_DIR}")
+      if(${CMAKE_SYSTEM_NAME} MATCHES "(FreeBSD|DragonFly)")
+        set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -Wl,-z,origin")
+        set(CMAKE_SHARED_LINKER_FLAGS "${CMAKE_SHARED_LINKER_FLAGS} -Wl,-z,origin")
+      endif()
+    endif(NOT DEFINED CMAKE_INSTALL_RPATH)
+  endif()
+
   option(LLVM_INSTALL_TOOLCHAIN_ONLY
     "Only include toolchain files in the 'install' target." OFF)