Index: flang/lib/Decimal/CMakeLists.txt
===================================================================
--- flang/lib/Decimal/CMakeLists.txt
+++ flang/lib/Decimal/CMakeLists.txt
@@ -24,6 +24,8 @@
 
   include(AddLLVM)
   include(AddFlang)
+  include(HandleLLVMOptions)
+  include(CheckCXXCompilerFlag)
 
   include(TestBigEndian)
   test_big_endian(IS_BIGENDIAN)
Index: flang/runtime/CMakeLists.txt
===================================================================
--- flang/runtime/CMakeLists.txt
+++ flang/runtime/CMakeLists.txt
@@ -39,6 +39,8 @@
 
   include(AddLLVM)
   include(AddFlang)
+  include(HandleLLVMOptions)
+  include(CheckCXXCompilerFlag)
 
   include(TestBigEndian)
   test_big_endian(IS_BIGENDIAN)