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- From: net@cs.tu-berlin.de (Oliver Laumann)
- Subject: Elk 2.0 available
- Message-ID: <1992Nov22.151509.23539@cs.tu-berlin.de>
- Sender: news@cs.tu-berlin.de
- Organization: Technical University of Berlin, Germany
- Date: Sun, 22 Nov 1992 15:15:09 GMT
- Lines: 57
-
- Release 2.0 of Elk, the Extension Language Kit, is now available.
-
- Elk is a Scheme interpreter intended to be used as a general, reusable
- extension language subsystem for integration into existing and future
- applications. Elk can also be used as a stand-alone implementation of
- the Scheme programming language.
-
- Elk supports several additional language features to increase its
- usability as an extension language, among them dynamic, incremental
- loading of object files and `freezing' of a fully customized application
- into a new executable file (`dump').
-
- The current release of Elk includes several dynamically-loadable
- extensions, among them interfaces to the X11 Xlib and to the application
- programmer interface of the Xt intrinsics, and interfaces to the Athena
- and OSF/Motif widget sets. These extensions are especially useful for
- application writers whose applications have graphical user-interfaces
- based on X; they also can be used to interactively explore X and its
- libraries and as a platform for rapid prototyping of X-based
- applications.
-
- Release 2.0 is a major new release, as some of the interfaces between
- the interpreter kernel and extensions have been simplified and made more
- general, i.e. minor massaging of existing extensions will be required
- (see file MIGRATE).
-
- The distribution has been tested on several new systems (such as IBM
- RS/6000, HP9000/700, SGI, Sony NEWS; see the file MACHINES).
- The build and install process has been simplified significantly;
- system-specific configuration files are supplied for the systems
- on which Elk has been tested.
-
- Dynamic loading of object files is supported on all systems that have a
- functional "ld -A" interface, as well as the NeXT and the HP9000/700.
-
- Major internal reorganization has simplified porting Elk to further new
- systems (assembly language support and a stack-extending version of
- "alloca" are no longer required).
-
- Nearly all artificial limitations have been removed (such as number of
- before-GC and after-GC functions and of statically GC-linked objects).
-
- Elk is now easily usable with ANSI C and C++ (as well as with pre-ANSI C).
-
- A number of hooks are provided that will allow the seamless insertion of
- a new generational/incremental garbage collector that is planned for
- release 2.1.
-
-
- Elk release 2.0 can be obtained via anonymous FTP from
- tub.cs.tu-berlin.de (pub/elk/elk-2.0.tar.Z), and from
- export.lcs.mit.edu (contrib/elk-2.0.tar.Z).
-
-
- --
- Oliver Laumann net@cs.tu-berlin.de net@tub.BITNET
- Carsten Bormann cabo@cs.tu-berlin.de cabo@tub.BITNET
-