diff --git a/llvm/cmake/modules/AddLLVM.cmake b/llvm/cmake/modules/AddLLVM.cmake
--- a/llvm/cmake/modules/AddLLVM.cmake
+++ b/llvm/cmake/modules/AddLLVM.cmake
@@ -819,6 +819,7 @@
   else()
     set_target_properties(${name} PROPERTIES FOLDER "Libraries")
   endif()
+  set_target_properties(${name} PROPERTIES CXX_VISIBILITY_PRESET default)
 endmacro(add_llvm_library name)
 
 macro(add_llvm_executable name)