--- a/llvm/include/llvm/ADT/Any.h
+++ b/llvm/include/llvm/ADT/Any.h
@@ -23,7 +23,7 @@
 
 namespace llvm {
 
-class Any {
+class LLVM_EXTERNAL_VISIBILITY Any {
   template <typename T> struct TypeId { static const char Id; };
 
   struct StorageBase {