MacroPackage: exclToCDocOverviewCGDocRelNotesFAQIndexPermutedIndex
Allegro CL version 10.1
Unrevised from 10.0 to 10.1.
10.0 version


Arguments: system-name options &body modules

This macro creates a new system with name system-name and options taken from options, containing module-groups specified by modules. system-name must be a symbol (we recommend using a keyword) which will identify the system. options must be a (possibly empty) list of keyword/value pairs. modules is a list consisting of one or more short form module-specifications and/or long form module-specifications.

This macro returns the symbol system-name.

The allowable options keywords are shown in the table below.

See also defsystem.htm for general information on the defsystem facility in Allegro CL and for a description of module specifications.


value type

default value


:pretty-name string print-name of system-name symbol This name will be used for printing.
:default-module-class symbol identifying a class ds:lisp-module

Predefined classes are:



ds:c-module. Users may define additional classes, see defsystem.htm.

:default-package package object or string or symbol naming a package The value of *package* Can be overridden for a module or module-group with the package option in the long module form. Also can be overridden during an operation with the package argument.
:default-pathname pathname object or string or symbol naming pathname *default-pathname-defaults* This pathname will be merged with the filenames of the modules of the system in order to find files.
:default-file-type string depends on value of :default-module-class - see notes at right. Specifies file type (extension) for source files for modules in system. If :default-module-class is ds:lisp-module, default is value of *source-file-types*; if ds:text-module, default is nil; if ds:c-module, default is "c".
:property-list property list nil The value is added to the property list of the system.

Table 1: options keywords and values

Copyright (c) 1998-2022, Franz Inc. Lafayette, CA., USA. All rights reserved.
This page was not revised from the 10.0 page.
Created 2019.8.20.

Allegro CL version 10.1
Unrevised from 10.0 to 10.1.
10.0 version