Ldd在不同的Ubuntu机器之间的相同c ++可执行文件上显示不同版本的库

I have created a c++ app that needs libboost_iostreams.so.1.63.0 library. In a Ubuntu 16.04 VM I have built the library and the ldd command on my executable gives the following:I have created a c++ app that needs libboost_io