LD_DEBUG=help cat

ld -s -r -b binary -o blob.o blob

The runtime symbol bindings can be displayed by setting LD_DEBUG=bindings:

the search paths of each symbol lookup can be displayed by setting LD_DEBUG=symbols. If this is combined with a bindings request, you can obtain a complete picture of the symbol relocation process.

Dynamically linked shared libraries are an important aspect of GNU/Linux®. They allow executables to dynamically access external functionality at run time and thereby reduce their overall memory footprint (by bringing functionality in when it's needed). This article investigates the process of creating and using dynamic libraries, provides details on the various tools for exploring them, and explores how these libraries work under the hood.