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Introduction ¶

This manual documents the internals of gfortran, the GNU Fortran compiler.

Warning: This document, and the compiler it describes, are still under development. While efforts are made to keep it up-to-date, it might not accurately reflect the status of the most recent GNU Fortran compiler.

• Introduction
• Code that Interacts with the User
• Frontend Data Structures
• Internals of Fortran 2003 OOP Features
• Generating the intermediate language for later stages.
• The LibGFortran Runtime Library
• GNU Free Documentation License
• Index