Intel® Fortran Compiler Classic and Intel® Fortran Compiler Developer Guide and Reference

This document is for version 2021.13 of Intel® Fortran Compiler Classic (ifort) and version 2024.2 of Intel® Fortran Compiler (ifx).

Attention

Intel® Fortran Compiler Classic (ifort) is now deprecated and will be discontinued in October 2024. Intel recommends that customers transition now to using the LLVM-based Intel® Fortran Compiler (ifx) for continued Windows* and Linux* support, new language support, new language features, and optimizations.

For the latest information on transitioning from ifort to ifx, see the Porting Guide for ifort Users to ifx.

This developer guide provides information about Intel® Fortran Compiler Classic (ifort) and its runtime environment, and about Intel® Fortran Compiler (ifx), which is a new compiler based on the Intel Fortran Compiler Classic (ifort) frontend and runtime libraries, uses LLVM backend technology.

Refer to the Intel® Fortran Compiler product page and the Release Notes for more information about features, specifications, and downloads.

Use this guide to learn about:

For more information, refer to Introducing the Intel® Fortran Compiler Classic and Intel® Fortran Compiler.

Notices and Important Information

Using the Compiler Documentation

Note

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