flann / util /序列化。unordered_map >'没有成员命名为'serialize'

I am trying to compile a project Kintinuous used pcl-1.7. However I got some errors. I am searching for a long time on Google, but I still have no idea. I am a newcomer to programming. Please help me. The errors look like this:I am trying to compile a project Kintinuous use