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
@@ -962,6 +962,11 @@
   llvm_config( ${name} ${USE_SHARED} ${LLVM_LINK_COMPONENTS} )
   if( LLVM_COMMON_DEPENDS )
     add_dependencies( ${name} ${LLVM_COMMON_DEPENDS} )
+    # Add dependencies also to obj_name
+    # CMake issue 14747 --  add_dependencies() might be ignored to obj_name's user.
+    foreach(objlib ${obj_name})
+      add_dependencies(${objlib} ${LLVM_COMMON_DEPENDS})
+    endforeach()
   endif( LLVM_COMMON_DEPENDS )
 
   if(NOT ARG_IGNORE_EXTERNALIZE_DEBUGINFO)