Intel® Fortran Compiler Developer Guide and Reference

This document is for version 2025.0 of the Intel® Fortran Compiler (ifx).

Attention

Intel® Fortran Compiler Classic (ifort) is discontinued as of this release. To access past versions of documentation that includes content for the Intel® Fortran Compiler Classic (ifort):

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 (ifx), which 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 the Intel® Fortran Compiler Introduction.

Notices and Important Information

Using the Compiler Documentation

Note

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