Support for 64-bit Architecture on Linux

Applications designed to take advantage of Intel® 64 architecture can be built with one of three memory models:

IP-relative addressing requires only 32-bits, whereas absolute addressing requires 64-bits. This difference can affect code size and performance. (IP-relative addressing is somewhat faster.)

Additional Notes on Memory Models and Large Data Objects

<some lib.a library>(some .o): In Function <function>:
  : relocation truncated to fit: R_X86_64_PC32 <some symbol>