diff --git a/clang-tools-extra/clang-doc/tool/CMakeLists.txt b/clang-tools-extra/clang-doc/tool/CMakeLists.txt
index fb8317b272932f..4944251245c6bc 100644
--- a/clang-tools-extra/clang-doc/tool/CMakeLists.txt
+++ b/clang-tools-extra/clang-doc/tool/CMakeLists.txt
@@ -18,10 +18,38 @@ target_link_libraries(clang-doc
   clangDoc
   )
 
-install(FILES ../assets/clang-doc-default-stylesheet.css
-  DESTINATION "${CMAKE_INSTALL_DATADIR}/clang"
-  COMPONENT clang-doc)
 
-install(FILES ../assets/index.js
-  DESTINATION "${CMAKE_INSTALL_DATADIR}/clang"
-  COMPONENT clang-doc)
+set(assets
+  index.js
+  clang-doc-default-stylesheet.css
+)
+
+set(asset_dir "${CMAKE_CURRENT_SOURCE_DIR}/../assets")
+set(resource_dir "${CMAKE_BINARY_DIR}/share/clang")
+set(out_files)
+
+function(copy_files_to_dst src_dir dst_dir file)
+  set(src "${src_dir}/${file}")
+  set(dst "${dst_dir}/${file}")
+  add_custom_command(OUTPUT ${dst}
+    DEPENDS ${src}
+    COMMAND ${CMAKE_COMMAND} -E copy_if_different ${src} ${dst}
+    COMMENT "Copying ${file} to ${dst_dir}"
+  )
+  list(APPEND out_files ${dst})
+  set(out_files ${out_files} PARENT_SCOPE)
+endfunction(copy_files_to_dst)
+
+foreach(f ${assets})
+  install(FILES ${asset_dir}/${f}
+    DESTINATION "${CMAKE_INSTALL_DATADIR}/clang"
+    COMPONENT clang-doc)
+  copy_files_to_dst(${asset_dir} ${resource_dir} ${f})
+endforeach(f)
+
+add_custom_target(copy-clang-doc-assets
+  DEPENDS ${out_files}
+  COMMENT "Copying Clang-Doc Assets"
+)
+set_target_properties(copy-clang-doc-assets PROPERTIES FOLDER "Clang-Doc/Assets")
+add_dependencies(clang-doc copy-clang-doc-assets)