MIT/GNU Scheme
![[Image: Lambda shield]](lambda.png)
MIT/GNU Scheme is an implementation of the Scheme programming language, providing an interpreter, compiler, source-code debugger, integrated Emacs-like editor, and a large runtime library. MIT/GNU Scheme is best suited to programming large applications with a rapid development cycle.
Release status and future plans
| Snapshot |
|---|
| 20090107 |
The releases provide binaries that run on x86 (Intel Architecture 32) machines under the following operating systems: GNU/Linux, Mac OS X, and Windows. We additionally provide binaries for selected other architectures and systems, depending on the hardware and software that is available to us. We no longer support OS/2 or DOS.
Recent release notes are here.
In the future, we plan to deploy a new portable virtual machine and implement a module system. We also plan to finish support for R5RS, but we will not be providing support for R6RS. Other potential projects can be found on the tasks page.
Download
MIT/GNU Scheme is available in binary form for a variety of systems. Note that most problems unpacking or installing this software are due to corrupted downloads, so please check the downloaded file for a correct MD5 checksum before submitting a bug report. Each distribution below has its own list of MD5 checksums.
| File | Arch | Instructions | Notes |
|---|---|---|---|
| Packages: main, debug, doc | i386 | For Ubuntu 8.10. | |
| GNU/Linux binary | x86 | unix installation | Compiled as native code on Debian GNU/Linux 4.0. |
| Mac OS X binary | x86 | unix installation | Compiled as native code on Mac OS X 10.5. |
| Windows binary | x86 | Windows installation | Compiled on Windows XP using Open Watcom C/C++ 1.7a. |
| Portable C | (any) | how to build | For use on any unix system. |
| Other unix | x86 | how to build | For use on x86 running other unix. |
| Source (.tar.gz) | For unix systems; uses linefeeds as line delimiters. | ||
| Source (.zip) | For Windows and OS/2 systems; uses CR/LF pairs as line delimiters. | ||
| Change log | |||
| MD5 checksums |
Older versions can be downloaded here.
Code for running MIT/GNU Scheme under GNU Emacs is here (or byte-compiled); this has been tested on GNU Emacs versions 20.7 and 21.1, and should replace the file of the same name included with Emacs; it won't work with Emacs 19 or earlier. This doesn't work on Windows or OS/2.
Note that you cannot build a working system from the source unless you have a working MIT/GNU Scheme compiler to do the compilation. (This doesn't apply to the portable C source, which requires only a C compiler.) This means that if the above binaries don't work on your system, it is pointless to try building a custom set of binaries from the source code.
Documentation
Documentation for MIT/GNU Scheme is available online, as is documentation for most GNU software. The MIT/GNU Scheme documentation is available in HTML and PDF formats:
| Core documentation: | ||
|---|---|---|
| HTML | MIT/GNU Scheme Reference | |
| HTML | MIT/GNU Scheme User's Manual | |
| HTML | The SOS Reference Manual | |
| HTML | IMAIL User's Manual | |
| Supported SRFIs: | ||
| HTML | 0: cond-expand |
|
| HTML | 1: List library | |
| HTML | 2: and-let* |
|
| HTML | 6: Basic string ports | |
| HTML | 8: receive |
|
| HTML | 9: Defining record types | |
| HTML | 23: Error reporting mechanism | |
| HTML | 27: Sources of random bits | |
| HTML | 30: Nested multi-line comments | |
| HTML | 62: S-expression comments | |
| HTML | 69: Basic hash tables | |
Contact us
Please report bugs using the
bug-tracking system.
We can be contacted on the
mit-scheme-devel
mailing list.
New releases of MIT/GNU Scheme Scheme are announced on the
mit-scheme-announce mailing list.
Our more general Scheme page is
http://swiss.csail.mit.edu/projects/scheme/.
Older releases can be found at
http://swiss.csail.mit.edu/ftpdir/mit-scheme/.
Getting involved
Development of MIT/GNU Scheme, and GNU in general, is a volunteer effort, and you can contribute. For information, please read How to help GNU. If you'd like to get involved, it's a good idea to join the discussion mailing list (see above).
- Development
- For development sources, bug and patch trackers, and other information, please see the project page at Savannah.
- Maintainer
- MIT/GNU Scheme is currently being maintained by Chris Hanson. Please use the mailing lists for contact.
Licensing
MIT/GNU Scheme is free software; you can redistribute it and/or modify it under the terms of the GPL as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.
![[Image: Valid XHTML 1.0!]](valid-xhtml10.png){kind=small}
![[Image: Valid CSS!]](vcss.png){kind=small}