Chapter 16 Linux Application Code, PIC, and Libraries
AGNU/Linux thread running an application is reasonably called a program. Most such applications are bolted together out of previously independent parts at load time, a process that depends on a rather radical sort of position-independent code (the PIC of our title). Before we start on it, note that nothing in the Linux kernel obliges you to compile and build userland program binaries in any particular way: The kernel makes very few assumptions about what is going on in user-space.
GNU/Linux programs typically include large quantities of independently compiled library code, which is shared between multiple processes (running the same or different programs). There are great advantages in having ...
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