Index: cmake/modules/LLDBStandalone.cmake
===================================================================
--- cmake/modules/LLDBStandalone.cmake
+++ cmake/modules/LLDBStandalone.cmake
@@ -4,6 +4,10 @@
   project(lldb)
   cmake_minimum_required(VERSION 2.8)
 
+  if (POLICY CMP0022)
+    cmake_policy(SET CMP0022 NEW) # automatic when 2.8.12 is required
+  endif()
+
   option(LLVM_INSTALL_TOOLCHAIN_ONLY "Only include toolchain files in the 'install' target." OFF)
 
   set(LLDB_PATH_TO_LLVM_SOURCE "" CACHE PATH