Unix C Development Environment (continued)

• Compile step done in at least two sub-steps

  • preprocessor does text substitution on the C source code file (insertion of header files, etc.)
  • compiler translates the C language statements into instructions in the CPU’s machine language instruction set

• Linking step:

  • linker takes the object file(s), and adds software components from the library
  • linker also adds the startup code

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