-
For example to load the math library with your program
the -lm option must be included when you perform the
load operation
A small assembler program is also loaded with your
program, this program sets up the environment for
executing your C program, it sets the stack pointer, sets
up the values of argc and argv and transfers control to
your main() procedure
-
The output from ld is often called an a.out file, since
this is the default name of the file
-
This is the executable version of the program, which is
divided into 3 basic sections:
- text - the machine language or instructions for the
program
- initialized data - the global variables in the program that
have been given initial values. This region also includes all
constants, like the literal string "Brian", or the number 5.5
- uninitialized data - the global variables that haven't been
assigned initial values
-
The a.out file also has a header that specifies how the
program is to be executed, see man a.out for a detailed
description of this
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