***READ THIS FIRST BEFORE POSTING***

[Devorah_H_Intel]

Welcome to the Intel® Fortran Community Forum!

Check the topics below BEFORE posting a new question:

• IFX issue when building -check all or -check uninit
• How to use zsh, csh, or tcsh with oneAPI setvars.sh, vars.sh, or PSXE bash scripts
• Older Compiler Download Information
• The Easy and Fast Way to Install JUST Fortran Compiler with Intel® Fortran Essentials
• How to Use Intel's Fortran Compiler with Abaqus
• Intel® Fortran Compiler Information and Frequently Asked Questions
• Last build for ifort and plans for removing ifort from packages in the later months of 2024 

This porting guide provides information and suggestions to Intel® Fortran Compiler Classic (ifort) users migrating to the new Intel LLVM-based compiler Intel® Fortran Compiler (ifx). 

For support on Getting Started questions related to downloading, Installing, and licensing Intel oneAPI Toolkits and software development tools, including downloading legacy Fortran compilers, please post in the oneAPI Registration, Download, Licensing, and Installation forum.

Use the SEARCH to see if your question has already been answered. This helps reduce duplicate posts and keeps the forum organized.

Check the list of labels on the right.

Posting Your Question: Once you’ve read through the above topics, feel free to post your question. Make sure to provide as much detail as possible, including any relevant code snippets (please use the 'insert code sample' tool on the message toolbar), error messages, and what you’ve tried so far. Attach a source code file or a zip file of multiple sources. This will help others understand your issue and provide more accurate assistance.

[Devorah_H_Intel]

Useful Information

• Intel® Fortran Compiler Features and Specifications

• Get Intel® Fortran Compilers as Part of the Intel® oneAPI HPC Toolkit (Free Download)

• Priority Support for Intel® oneAPI Base & HPC Toolkit

• Intel® Fortran Compiler for oneAPI Release Notes

• Installation Guides

• Get Started Guides

• Developer Guide and Reference

• Intel® oneAPI Toolkit Version to Compiler Version Tables

• Supported Microsoft* Visual Studio to Compiler Versions Tables

• Get Help

• Fortran 2023 Standard

• Fortran 2018 Standard

• Fortran 2008 Standard

Product Information

• Intel® Fortran Compiler Release Notes

• Intel® Fortran Compiler Developer Guide and Reference

• Intel® oneAPI Programming Guide

• Porting Guide for Intel® Fortran Compiler - migrating from ifort to ifx

• Samples (click to download)

• Fortran Language and OpenMP* Features Implemented in Intel® Fortran Compiler

• Intel® Toolkit Version to Compiler Version Mapping

• Intel® Software Development Products End User License Agreement (PDF)

Context Sensitive/F1 Help

• To use the Context Sensitive/F1 Help feature, visit the Download Documentation: Intel® Compiler (Current and Previous) page and follow the instructions provided there.

Frequently Asked Questions

• Are there free versions of the Intel compilers?

• How do I install Microsoft Visual Studio for use with Intel Compilers?

• How do I configure Microsoft Visual Studio for developing mixed Fortran-C applications?

• How do I do a silent/unattended install?

• How can I use multiple versions of the compiler in Microsoft Visual Studio*?

• Which versions of Microsoft Visual Studio are supported by various Intel compiler versions?

• Which versions of Intel Fortran Compiler are currently supported?

• Which features from the Fortran standards are supported?

• What do I need to deploy my Fortran application on a system where the compiler is not installed?

  • Get Runtime Versions of oneAPI Compilers

• Where can I download Single Components and Runtimes?

• How do I debug a Fortran coarray application on Windows?