[linking] PIC GOT PLT , Static Link, Dynamic Link

Best explained article:
Position Independent Code (PIC) in shared libraries

Excerpt:
The LD_BIND_NOW env var, when defined, tells the dynamic loader to always perform 
the resolution for all symbols at start-up time, and not lazily.

Conversely, the LD_BIND_NOT env var tells the dynamic loader not to update the 
GOT entry at all. Each call to an external function will then go through the dynamic loader and be resolved anew.

Load-time relocation of shared libraries

How statically linked programs run on Linux

Position Independent Code (PIC) in shared libraries on x64

Understanding the x64 code models

Reference:

http://www.x86-64.org/

Trampoline