So, if you try to open WSL, you will get to see a window informing you that no distribution is installed. Next, you have to install a Linux distribution. Install it, and you're done with the first step. Launch the Microsoft Store and search for ' Windows subsystem'. You can get it in one click from Windows Store.The good thing is that the latest set of upgrades, including the stable release of WSL v1.0 released from Windows, makes it easier to install Bash on Windows. WSL only runs on 64-bit versions 32-bit versions are not supported.You must be running Windows 10 version 1607 (the Anniversary update) or above.Make sure it is matching with the respective requirements described under various sub-headings here in this article. Here, you can see the build of your PC, as shown in the screenshot below. To check your Windows version, search for about in the start menu. Requirements necessary for a particular feature to work are described under its titles. You must be running specific versions of Windows for the different features described in this article. MSYS2 is a much smaller package (in terms of disk pace needed), and is used by several other free projects: R (Rtools), Octave and Strawberry Perl all include parts of it, including the gcc compilers.You can refer to Microsoft's documentation to explore what Windows Subsystem for Linux (or WSL) is. Intel oneAPI is at least partly open source, not sure about the Fortran compiler. Available on Linux, macOS and Windows (of course, Visual Studio is needed only on Windows). There is also a separate distribution of mingw-w64 that can be installed without MSYS2, but I don't recommend it, as the last files there have gcc-8.1.0, from 2018 (apart from a recent build by Ray Linn that includes the Ada, but not the Fortran compiler).Īnother compiler that is now free is Intel Fortran : you have to install Microsoft Visual Studio Community, Intel oneAPI Base Toolkit and Intel oneAPI HPC Toolkit. If you want to use gfortran on Windows, I suggest you install MSYS2, which has a bash terminal, and a package manager that can install gcc and gfortran, as well as lapack and many other libraries.

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