Windows users can have a free compiler! A gfortran package for Windows is available as zip archive at http://quatramaran.ens.fr/~coudert/gfortran/gfortran-windows.zip . This is a standalone package, which means you don't need anything else to compile and run Fortran programs. Installation instructions After downloading the zip archive, expand it into the directory of your choice (we will call that d:\gfortran). The compiler is then d:\gfortran\bin\gfortran.exe, which you can run by entering its complete path. To avoid lots of typing, you can add the d:\gfortran\bin directory to your PATH environment variable, and then run gfortran simply by typing gfortran. Technical details This package is built with MinGW/MSYS, and contains a minimal set of MinGW files to be standalone. If you have MinGW already installed on your system, then you might want to expand the gfortran package in the same tree. gfortran package for 64 bits AMD-compatible processors This is a daily binary package of gfortran for x86_64 linux users. It defaults to 32 bits integers, which is compatible with older programs. You can download the package at http://quatramaran.ens.fr/~coudert/gfortran/gfortran-x86_64-linux.tar.gz and expand it. Static linking is advised since you won't have to set up any environment variable. * Directions using csh or tcsh: mkdir gfortran_temp cd gfortran_temp wget -O - http://quatramaran.ens.fr/~coudert/gfortran/gfortran-x86_64-linux.tar.gz | tar xfz - alias gfc $PWD/irun/bin/gfortran -static -Wall gfc --version * Directions using bash, zsh or ksh: mkdir gfortran_temp cd gfortran_temp wget -O - http://quatramaran.ens.fr/~coudert/gfortran/gfortran-x86_64-linux.tar.gz | tar xfz - alias gfc="$PWD/irun/bin/gfortran -static -Wall" gfc --version In case of trouble please report to the fortran@gcc.gnu.org mailing-list to get help. The gfortran manual is available online. Please remember that, since gfortran is still in development state, documentation is not our first priority (although we try to maintain it up-to-date and enhance it). If you have any question that is not answered in this manual or the gfortran FAQ, or if you have ideas for enhancement of the gfortran documentation, please send a mail to fortran@gcc.gnu.org gfortran installer for MacOS X An Apple-style installer for MacOS X users is available for download at http://quatramaran.ens.fr/~coudert/gfortran/gfortran-macosx.dmg . It is easy to install, and lets you have a taste of our great free compiler. Please note: If you install gfortran for the first time, you will need to install up-to-date cctools (download the package here: http://quatramaran.ens.fr/~coudert/gfortran/macosx-dependencies/cctools-528.5.dmg). Technical details The gfortran package for MacOS X installs all files in the /usr/local/gfortran directory, and a single symbolic link (/usr/local/bin/gfortran). If you need to uninstall it (since Apple packages does not support auto-uninstalling), you need to type the followind command in a terminal, as administrator: sudo rm -r /usr/local/gfortran /usr/local/bin/gfortran As every time you use administrator privileges, double check your command and make no mistake! Windows/Cygwin users can have a free fortran95 compiler! An i686 gfortran-4.1.0 (C and C++ are included) package for Cygwin is available at http://quatramaran.ens.fr/~coudert/gfortran/gfortran-4.1.0-i686Cygwin-20050320.tar.bz2 The Athlon version (which also includes java) is: http://quatramaran.ens.fr/~coudert/gfortran/gfortran-4.1.0-Athlon-Cygwin-20050324.tar.bz2 Installation instructions Download the tarball in a suitable directory, such as /irun NB. Windows Explorer has a nasty habit of changing the extension from .tar.bz2 to .tar.tar Just rename the archive after downloading, if this happens. All will be well if the extension is correct. > tar -jxvf > {your_download_path}/gfortran-4.1.0-i686Cygwin-20050320.tar.bz2 > /irun/bin/gfortran --version should confirm that you are up and > running. The manual can be read, using > man -M /irun/man gfortran I will build up this page again and the range of downloads available for Cygwin. Paul T Downloading recent CVS source code gfortran source code is available from the GCC CVS repository (http://gcc.gnu.org/install). A daily tarball of the code is available from http://quatramaran.ens.fr/~coudert/gfortran/gcc-cvs.tar.bz2 if you prefer.