Welcome to LQ.
your system, and none of its components can usually be changed.
All installed libraries, all (most) commands, most applications :
They are compiled with the original glibc, and depend on ld-2.11.1.so, etc.
Please try the command : 'ldd /bin/bash' to see the dependencies.
If you want to understand in depth, how an OS works, suggest :
Build "Linux From Scratch", LFS http://www.linuxfromscratch.org/lfs/view/stable/
The LQ LFS Forum: http://www.linuxquestions.org/questi...om-scratch-13/