OpenScheme 1.3.4 Scheme to C compiler

Guilhem de WAILLY <>
21 Aug 2000 00:04:29 -0400

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OpenScheme 1.3.4 Scheme to C compiler (Guilhem de WAILLY) (2000-08-21)
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From: Guilhem de WAILLY <>
Newsgroups: comp.compilers
Date: 21 Aug 2000 00:04:29 -0400
Organization: Guest of ProXad - France
Keywords: Scheme, available

Erian Concept is glad to announce OpenScheme 1.3.4


- Major Speed improvement
- Major bug correction in the thread library with wWindows
- HTTP client
- Sound
- Logging port
- Windows Netscape & Internet Explorer plugin, Linux Netscape plugin
- Security policy
- IMG: read BMP, write PS, drawing functionalities
- Traditional bug fixes

OpenScheme does not now require a licence number to run. Therefore,
registration is required to obtain a free support.

OpenScheme is a Scheme interpreter/compiler/debugger conform to the
R5RS standard (only scheme-report-environment, null-environment are
not supported)

It is available for Intel PC with Linux, BeOS [(r) Be, Inc], FreeBSD,
Solaris, or Windows [(R) Microsoft]. Since the user sees the same API
interface, cross-development is easy and immediate.

OpenScheme integrates a lot of interesting features, such as a regular
expression parser, object oriented system, CLOS based, console Object
Oriented interface, an standardized Operating System access, a
preemptive timer library that is thread compatible.

A low-level set of primitives and a OO graphical library are now
available. The OO graphical library is entirely written in Scheme. It
provides all the common Widgets.

OpenScheme is open to the net: A NET plugin provides all the necessary
functions to access to the net, such as Sockets, Crypt, Encode, Mail,
CGI, ...

A fully relational database engine is also provided in the
professional edition. It allows to handle any number of files, large
objects, objects with variable size, files larger than 4Go.

OpenScheme includes an interpreter that performs on-flow compilation
and a compiler that produces pure ANSI C. It also includes a command
line symbolic debugger.

OpenScheme allows to put in the same source file high level Object
Oriented code, standard Scheme, C and assembly (that breaks
portability). This feature provides an impressive power to the
development environment.

Therefore, OpenScheme does not have yet an integrated graphical user
interface. This is planned.

OpenScheme is commercially supported by:

                Erian Concept
                Le Stella, 155 bd de la Madeleine
                06000 - Nice - FRANCE
                Phone: +33 493 441 806
                Fax : +33 493 441 806
                WEB :

OpenScheme is distributed in four editions:

-Free WEB edition: fully functional interpreter version, with plain
HTML documentation. This version does not include the development
kit. It can be freely distributed (distributor may request a special
license number).

-Standard edition: This version allows to have profits and to sold all
derivated products, royalties free. A technical support is provided by
Erian Concept.

-Professional edition: This edition includes the paper manuals, the
OSD database engine. OSD is a native relational database kernel with
an unlimited number of simultaneously opened tables, wide files
(>4Go), variable length fields, b+tree indexes, memory tables, etc.
In addition, free updates for the next three minor and major releases
of OpenScheme.

Our sponsors are NetUltra (, Iverson Softwares
( and Linux Magazine ( and
Tornado Technology, Inc (

The OpenScheme team.

Guilhem de Wailly
Erian Concept
Open Scheme

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