Welcome to the home of
GNU Fortran 95

The GNU Fortran 95 project, or G95, is developing a Fortran 95 compiler front end, as well as runtime libraries, for GCC, the GNU Compiler Collection. G95 development is a part of the GNU Project, aiming to bring free number crunching to all GNU system variants, including GNU/Linux. The G95 development effort uses an open development environment in order to attract a larger team of developers and to ensure that G95 can work on multiple architectures and diverse environments.

In particular, the project wishes to reach the users of the Fortran 95 language, be it in the scientific community, in education or in a commercial environment. Today, truly free Fortran 90 or Fortran 95 compilers do not exist. We are trying to make one available to the Fortran community.

Project goal

We strive to provide a high quality release, which we want to work well on a variety of native (including GNU/Linux) targets. We do not believe we can make the best Fortran 95 compiler, but we want it to be adequate.

The focus is on standard conformance and on good performance of the executables produced by the compiler. Secondary goals include reasonable compile speed, a small memory foot print, and the ability to build a cross-compiler.

Contributing

We encourage everyone to contribute changes and help test G95. We provide read access to our development sources for everybody with anonymous CVS. Daily snapshots of the CVS repository are also available.

GNU Fortran 95 and the GNU Compiler Collection

GNU Fortran 95 is not currently part of GCC, but we are progressing towards inclusion. We will have to fulfill all the requirements for inclusion in GCC. Most changes needed for that are quite easy, so if you want to help, please take on some of the projects in this category. See the Contributing page.

News/Announcements

July 05, 2003

New x86-linux binaries have been released. Get them here. Note these tend to get out of date fairly quicky, so it's reccommended that you compile your own from GCC CVS if possible.

July 27, 2003

gcc-g95 has been integrated into the tree-ssa branch of the GCC CVS repository (announcement on mailing list here). This branch of GCC will become part of official GCC releases by the time GCC 3.5 is released. This web page and our mailing list will move to gcc.gnu.org sometime soon.

July 11, 2003

The anonymous CVS server seems to get updated again, so please update your local copies and give our sources a try.

July 05, 2003

New x86-linux binaries have been released. Get them here. These include a complete FORALL implementation and some support for internal IO, amongst other things.

June 28, 2003

We're sorry that anonymous access to our CVS is not up-to-date and therefore unusable to non-developers. This is due to ongoing problems with the SourceForge servers.

June 12, 2003

A page on using G95 is now available, please look there if you're trying to figure out how to do stuff with G95.

June 11, 2003

A first draft of the compiler status page has been brought into place. Have a look there to see, how close we think that we are to a fully functioning compiler.

May 31, 2003

The first Annual GCC Developers Summit was held in Ottawa, Canada from May 25-27, 2003. At the summit, G95 developer Paul Brook presented a report on the current status of Fortran 95 support in GCC. The decision was made that G95 should soon be adopted in the tree-ssa branch in the GCC CVS repository.

May 20, 2003

New binaries for windows have been released. Get them here (installation information can be found here). You will need a working cygwin environment.

May 20, 2003

New x86-linux binaries have been released. Get them here.

April 18, 2003

The SELECT CASE construct with case expressions of the CHARACTER type are now implemented. Canqun Yang ported the implementation from Andy Vaught's g95 tree.

April 15, 2003

The CPU_TIME intrinsic is now implemented. Keep an eye on the library status page, some of the red areas will turn green over the next few weeks.

April 12, 2003

Canqun Yang of the CCRG group has partially implemented the WHERE statement and the WHERE construct. Xiaoqiang Zhang, also of the CCRG group, has implemented routines for printing REAL values.

April 10, 2003

Arnaud Desitter has implemented a new warning, -Wimplicit-interface, that warns about calls with an implicit interface. We do not know of any other compiler that offers a similar feature.

April 6, 2003

Paul Brook has implemented the EOSHIFT, MERGE, PACK, UNPACK, and SPREAD intrinsics.

March 15, 2003

G95 now has a new command line switch, -fg77-calls. This makes g95 generate code using a g77 compatible calling convention. Character variables are still wrong, but other things should work ok.
New linux binaries have been uploaded. They're available from the SourceForge Project page.

March 9, 2003

Assumed shape arrays should now work properly, linux binary coming soon...

January 29, 2003

Paul has uploaded a new statically linked executable. It is available from our SourceForge Project page
This executable has generated code for 5600 out of 6100 test cases. The generated code has not been validated, though. Also, printing reals has not yet been implemented, and internal files still do not work.
Please report any bugs to the mailing list.

January 27, 2003

CVS is now fully up and running again, except for the statistics. No CVS operations are recorded so we look a bit poor. But with several commits per week we're still going forward quite rapidly.

January 17, 2003

A more complete TODO list is now available on this website. Still no news (good or bad) from SourceForge.

January 15, 2003

SourceForge.net has taken offline pserver based CVS access. This includes anonymous CVS and web-based CVS. The service will stay offline until further notice.

January 9, 2003

Initial upload of these web pages. Let's hope this attracts more developers!

January 8, 2003

We have opened a new mailing list. Anyone can post and/or subscribe. The mailing list archives can be reached via our Sourceforge project page.

January 5, 2003

This project forked from the original G95 project.