A shared object library is supposed to use linker map files during her creation to declare interface versions, so that the run time linker can request and obtai

A shared object library is supposed to use linker map files during her creation to declare interface versions, so that the run time linker can request and obtain the correct version of the interface. Like all the traditional UNIX operating environments solved it: no need for multiple versions, one library contains all versions and the run time linker maps in the requested code. See how illumos does it. Search for linker map files.