CONFIG_LD_SCRIPT_DYN_RPATH is not available for thedefaultarchitecture x86.
Result is shown for architecture um

set rpath in the binary

configname: CONFIG_LD_SCRIPT_DYN_RPATH

Linux Kernel Configuration
└─>UML-specific options
└─>set rpath in the binary
In linux kernel since version 5.2 (release Date: 2019-07-07)  
Add /lib (and /lib64 for 64-bit) to the linux binary's rpath
explicitly.

You may need to turn this off if compiling for nix systems
that have their libraries in random /nix directories and
might otherwise unexpected use libraries from /lib or /lib64
instead of the desired ones.