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.
The releases provide binaries that run on x86-64 and aarch64 machines running unix systems. They have been tested on GNU/Linux, NetBSD, and macos systems. We no longer support OS/2, DOS, or Windows, though it's possible that this software could be used on Windows Subsystem for Linux (we haven't tried).
No native-code support for Apple silicon: At this time, we are unable to support native-code compilation on new macs using Apple's silicon (the M* chips). Although we support the ARM architecture it's based on, Apple's design uses W^X restrictions that conflict with the way that MIT/GNU Scheme manages memory. Our native-code implementation requires both write and execute permissions on memory, and fixing that is a significant redesign that's unlikely to happen in the near future. Instead use the SVM1 binaries, which should work properly, if slowly, on that architecture.
We also no longer distribute macos applications, as there were versioning issues with those that we did distribute. It is easy to generate a macos application from our normal distribution: after running make, run make macosx-app. Instead of running make install, just move mit-scheme.app to /Applications/ (or wherever you want).
Recent release notes are here.
Other potential projects can be found on the tasks page.
MIT/GNU Scheme is available in binary form for a variety of systems.
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.
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 on this page, and in other formats as downloads.
Older versions can be downloaded here.
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.
MIT/GNU Scheme mostly conforms to the R7RS (small) standard. It also fully supports these SRFIs:
cond-expand
and-let*
receive
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 are announced on the
mit-scheme-announce mailing list.
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).
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.
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Please send general FSF & GNU inquiries to <gnu@gnu.org>.
There are also other ways to contact the FSF.
Broken links and other corrections or suggestions can be sent to <bug-mit-scheme@gnu.org>.
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Updated: 2024-01-22T19:43:24-05