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R5RS Scheme implementation

SCM is a portable Scheme implementation written in C that conforms to the R5RS and IEEE P1178 standards. It provides a machine independent platform for GNU JACAL, a symbolic algebra system.

This implementation includes Hobbit, a Scheme-to-C compiler, which can generate C files whose binaries can be dynamically or statically linked with a SCM executable.

SCM supports and requires the SLIB Scheme library. Both SCM and SLIB are GNU projects.


User manual available in HTML format from; User manual available in PDF format from

Heckert gnu.small.png This is a GNU package:scm


Download version 5f2 (stable)
released on 16 January 2015

VCS Checkout

cvs co .


Related Projects


LicenseVerified byVerified onNotes
License:LGPLGenium29 September 2015

Leaders and contributors

Aubrey Jaffer Maintainer

Resources and communication

AudienceResource typeURI
Bug Tracking,
SupportMailing List Subscribe
DeveloperVCS Repository Webview

Software prerequisites

Required to useSLIB

This entry (in part or in whole) was last reviewed on 29 September 2015.


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The copyright and license notices on this page only apply to the text on this page. Any software or copyright-licenses or other similar notices described in this text has its own copyright notice and license, which can usually be found in the distribution or license text itself.