Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt
+++ CMakeLists.txt
@@ -639,6 +639,8 @@
 set(LLVMBUILDCMAKEFRAG
   "${LLVM_BINARY_DIR}/LLVMBuild.cmake")
 
+set(LLVMOPTIONALCOMPONENTS " ")
+
 # Create the list of optional components that are enabled
 if (LLVM_USE_INTEL_JITEVENTS)
   set(LLVMOPTIONALCOMPONENTS IntelJITEvents)