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Chicken wrapper for the Scheme48 module system.
This egg allows you to compile Scheme48 modules as-is, and use them in your Chicken programs.
Most of the module (or "package") syntax is supported. For information on how to use these, see the Scheme48 manual.
Limitations and caveats
This module system only generates import statements. Libraries are not loaded by import statements. This means you will have to load the libraries exporting the modules yourself prior to using the s48 modules.
The following code actually defines two modules; foo and _foo:
(define-structure foo (export bar) (open scheme) (files foo))
That's because define-structure internally expands to define-structures with only one structure defined. Generating several modules with differing export lists requires one common internal module holding the actual code, which exports all its symbols. If you have several modules defined, the name of the internal module is equal to the first in the list, prefixed by an underscore. If you ask Chicken to generate import libraries while compiling, don't forget to add an extra -j flag to generate the "hidden" import library, as well.
This module also defines the following macro as a replacement for the regular include macro:[syntax] (include-relative filename)
This includes filename just like include would, but if you use include-relative inside that file, it will include files relative to the directory in which filename is located (include would instead just try to find the file relative to the topmost file you're compiling).
This macro must be used to include Scheme 48 module/package files which use files declarations to load external files.
For example, this code:
;; file: /rootpath/foo.scm (include "bar/qux.scm")
;; file: /rootpath/bar/qux.scm (include "mooh/blah.scm")
Would fail to load /rootpath/bar/mooh/blah.scm. Instead, it gives an error because it is trying to load /rootpath/mooh/blah.scm.
Whereas this would work:
;; file: /rootpath/foo.scm (use s48-modules) (include-relative "bar/qux.scm")
;; file: /rootpath/bar/qux.scm (include-relative "mooh/blah.scm")
- 0.3 Add include-relative
- 0.2 Tests and minor bugfixes
- 0.1 Initial release
Copyright (c) 2008, Felix L. Winkelmann All rights reserved.
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