Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -64,22 +64,24 @@
 if (COMPILER_RT_STANDALONE_BUILD)
   load_llvm_config()
 
-  # Find Python interpreter.
-  set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5)
-  include(FindPythonInterp)
-  if(NOT PYTHONINTERP_FOUND)
-    message(FATAL_ERROR "
-      Unable to find Python interpreter required testing. Please install Python
-      or specify the PYTHON_EXECUTABLE CMake variable.")
-  endif()
+  if(COMPILER_RT_INCLUDE_TESTS)
+    # Find Python interpreter.
+    set(Python_ADDITIONAL_VERSIONS 2.7 2.6 2.5)
+    include(FindPythonInterp)
+    if(NOT PYTHONINTERP_FOUND)
+      message(FATAL_ERROR "
+        Unable to find Python interpreter required testing. Please install Python
+        or specify the PYTHON_EXECUTABLE CMake variable.")
+    endif()
 
-  # Define default arguments to lit.
-  set(LIT_ARGS_DEFAULT "-sv")
-  if (MSVC OR XCODE)
-    set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
+    # Define default arguments to lit.
+    set(LIT_ARGS_DEFAULT "-sv")
+    if (MSVC OR XCODE)
+      set(LIT_ARGS_DEFAULT "${LIT_ARGS_DEFAULT} --no-progress-bar")
+    endif()
+    set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
+    set(LLVM_LIT_OUTPUT_DIR "${COMPILER_RT_EXEC_OUTPUT_DIR}")
   endif()
-  set(LLVM_LIT_ARGS "${LIT_ARGS_DEFAULT}" CACHE STRING "Default options for lit")
-  set(LLVM_LIT_OUTPUT_DIR "${COMPILER_RT_EXEC_OUTPUT_DIR}")
 endif()
 
 construct_compiler_rt_default_triple()