1.3 What the linker does when constructing an executable image

armlink performs many operations, depending on the content of the input files and the command-line options you specify.

When you use the linker to construct an executable image, it:

  • Resolves symbolic references between the input object files.
  • Extracts object modules from libraries to satisfy otherwise unsatisfied symbolic references.
  • Removes unused sections.
  • Eliminates duplicate common groups and common code, data, and debug sections.
  • Sorts input sections according to their attributes and names, and merges sections with similar attributes and names into contiguous chunks.
  • Organizes object fragments into memory regions according to the grouping and placement information provided.
  • Assigns addresses to relocatable values.
  • Generates an executable image.
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