Minimal Lisp binaries

Nearly all lisp dialects have native code compilers, and many can produce standalone executables. One thing I don't understand however is why executables require the full run-time? especially when your code doesn't use eval. Is there a way to use create a minimal image with sbcl that only includes the functions your program uses?

>>21
The executable must still be loaded into memory and transferred to the CPU. The most wasteful the binary, the more cache it uses, the more time is wasted on memory access.