diff --git a/libcxx/CMakeLists.txt b/libcxx/CMakeLists.txt
index f0c4d1e..29eef8f 100644
--- a/libcxx/CMakeLists.txt
+++ b/libcxx/CMakeLists.txt
@@ -684,6 +684,7 @@
 endif()
 
 if (LIBCXX_STANDALONE_BUILD AND EXISTS "${LLVM_MAIN_SRC_DIR}/utils/llvm-lit")
+  include(AddLLVM) # for get_llvm_lit_path
   # Make sure the llvm-lit script is generated into the bin directory, and do
   # it after adding all tests, since the generated script will only work
   # correctly discovered tests against test locations from the source tree that
diff --git a/libcxx/test/CMakeLists.txt b/libcxx/test/CMakeLists.txt
index 4c8ca8f..53c6416 100644
--- a/libcxx/test/CMakeLists.txt
+++ b/libcxx/test/CMakeLists.txt
@@ -49,10 +49,6 @@
 
 set(AUTO_GEN_COMMENT "## Autogenerated by libcxx configuration.\n# Do not edit!")
 
-configure_lit_site_cfg(
-  ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
-  ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg)
-
 set(LIBCXX_TEST_DEPS "")
 
 if (LIBCXX_ENABLE_EXPERIMENTAL_LIBRARY)
@@ -64,7 +60,12 @@
 endif()
 
 if (LIBCXX_INCLUDE_TESTS)
-  include(AddLLVM) # for add_lit_testsuite
+  include(AddLLVM) # for configure_lit_site_cfg and add_lit_testsuit
+
+  configure_lit_site_cfg(
+    ${CMAKE_CURRENT_SOURCE_DIR}/lit.site.cfg.in
+    ${CMAKE_CURRENT_BINARY_DIR}/lit.site.cfg)
+
   add_lit_testsuite(check-cxx
     "Running libcxx tests"
     ${CMAKE_CURRENT_BINARY_DIR}