Quickstart Fortran on Windows

An easy Windows installer and launcher for GFortran and the Fortran Package Manager

Download the latest installer from the Releases Page

Note: the installer takes a little while to startup due to it size, please be patient.

Features

• Installs locally, no adminstrator account required
• Optionally add everything to the PATH for the local user
• Includes:
  • GCC-GFortran 12.2.0
  • Fortran Package Manager v0.8.2
  • Git for Windows v2.35.2 (needed for fpm)
  • OpenBLAS (BLAS/LAPACK) v0.3.20-1
  • GNU make v4.3
• Extra utility commands
  • intel-setvars to initialise the Intel OneAPI environment (if installed)
  • setup-stdlib to build and install the latest version of the Fortran Standard Library

FAQ

Do I need to be administrator to install this?

No, the installer will install files to the AppData directory for the current user (C:\Users\<user>\AppData\Local).

What is 'Add to path' and do I need it?

The 'Add to path' installer option will update the Windows PATH variable for the local user so that all the installed components are available to other applications. This means that you can call gfortran or fpm from any command window or code editor/IDE.

Alternatively, you may create an 'isolated' installation by unchecking the 'Add to path' option when installing. In this case, the installed programs are only made available when you use the 'Quickstart Fortran' command line shortcut added to the desktop and start menu.

Can I use this with the Intel OneAPI Compiler?

Yes. The installation adds a helper command intel-setvars to setup the intel environment (this must be called each time you open a new command window.). The helper script assumes OneAPI is installed at C:\Program Files (x86)\Intel\oneAPI.

After setting up the intel environment, you may use ifort with fpm by appending --compiler ifort to each fpm command or by setting the environment variable:

> set FPM_COMPILER=ifort

How can I install stdlib with this?

First, run the installer, making sure that GFortran, fpm and Git are selected. After install, open up the commmand window using the Quickstart Fortran shortcut on the desktop or in the start menu. At the command window type setup-stdlib and press ENTER. This will fetch the latest version of stdlib and install it to the local GFortran installation.

Note: The setup-stdlib script only works with the GFortran installation provided with this installer - it cannot currently detect existing GFortran or Intel fortran installations.

How do I compile with BLAS/LAPACK?

The optimized OpenBLAS library is included with the GCC installation. Use the link flags -llapack -lblas or add the following to your fpm.toml file:

[build]
link = ["lapack", "blas"]

How do I uninstall?

There is an uninstall program which may be launched from the start menu:

Start menu > All programs > Quickstart Fortran > Uninstall

About

The installer is built using the Nullsoft Scriptable Install System.

See quickstart-fortran-installer.nsi for the configuration file and make_installer.yml for the Github actions workflow.

The GNU Compiler Collection v11.2.0 is sourced from WinLibs based on the MinGW-w64 project linked with MSVCRT.