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I'm trying to install Intel's Fortran compiler toolset (the standalone installer not the entire OneAPI bundle) in a Windows 10 machine. I do not use Visual Studio or Visual Studio Build Tools and do not fancy installing them either. However my Intel Fortran compiler installation warned me that it will not work if I do not install Visual Studio or MSVC Build Tools.

I tried to install it ignoring the warnings and the OneAPI terminal did not show up in the Start Menu. I tried to manually activate the setvars.bat from an elevated command prompt, and got the activation echo message that goes like Intel ...environment initialized... and some more lines stating the tools and their versions. But when running ifort & ifx commands I got the ..is not recognized as an internal or external command, operable program or batch file. message.

So I decided to install the Build Tools for MS Visual Studio 2022 (Just the Build Tools core installation, around 90MiB download) without any additional workloads. Do I need to install any workloads for this? Am I missing something?

Then added it to PATH and tried reinstalling the compiler. I still got the IDE integration failed error message. This time I noticed that the setvars.bat required MS Visual Studio or Build Tools 2017 or 2019. So I went back, uninstalled the 2022 version and installed the 2019 version and tried reinstalling the compiler but it is still not working. I still get the ..is not recognized as an internal or external command, operable program or batch file. message. when running ifx or ifort even after manually running the setvars.bat.

Can anyone help me find a solution. I would really appreciate it. But as a temporary solution I installed MSYS2 toolset with gfortran compiler but I'm not satisfied. :(

Anoban Karunananthan
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    You'll probably have better luck on the intel fortran compiler forum: https://community.intel.com/t5/Intel-Fortran-Compiler/bd-p/fortran-compiler there's currently a bug with the latest version of visual studio, so you have to use 2019 (unless you can get a previous version of 2022, which I don't think you can for free). You do need the C++ desktop development workload installed https://www.intel.com/content/www/us/en/developer/articles/guide/installing-microsoft-visual-studio-2019-for-use-with-intel-compilers.html – llama May 28 '22 at 01:08
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    there's also this relatively quick tutorial for if you want the compiler and nothing else: https://community.intel.com/t5/Intel-Fortran-Compiler/The-Easy-and-Fast-Way-to-Install-JUST-Fortran-with-Intel-oneAPI/m-p/1360571#M160118 – llama May 28 '22 at 01:09

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