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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
><HEAD
><TITLE
>The eCos Component Writer's Guide</TITLE
><meta name="MSSmartTagsPreventParsing" content="TRUE">
<META
NAME="GENERATOR"
CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+
"><LINK
REL="NEXT"
TITLE="Overview"
HREF="overview.html"></HEAD
><BODY
CLASS="BOOK"
BGCOLOR="#FFFFFF"
TEXT="#000000"
LINK="#0000FF"
VLINK="#840084"
ALINK="#0000FF"
><DIV
CLASS="BOOK"
><A
NAME="CDL-GUIDE"><DIV
CLASS="TITLEPAGE"
><H1
CLASS="TITLE"
><A
NAME="AEN4">The <SPAN
CLASS="APPLICATION"
>eCos</SPAN
> Component Writer's Guide</H1
><H3
CLASS="AUTHOR"
><A
NAME="AEN8">Bart Veer</H3
><H3
CLASS="AUTHOR"
><A
NAME="AEN11">John Dallaway</H3
><P
CLASS="COPYRIGHT"
>Copyright &copy; 2000, 2001 by Red Hat Inc.</P
><HR></DIV
><DIV
CLASS="TOC"
><DL
><DT
><B
>Table of Contents</B
></DT
><DT
>1. <A
HREF="overview.html"
>Overview</A
></DT
><DD
><DL
><DT
><A
HREF="overview.html#OVERVIEW.TERMINOLOGY"
>Terminology</A
></DT
><DD
><DL
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.FRAMEWORK"
>Component Framework</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.OPTION"
>Configuration Option</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.COMPONENT"
>Component</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.PACKAGE"
>Package</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.CONFIGURATION"
>Configuration</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.TARGET"
>Target</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.TEMPLATE"
>Template</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.PROPERTIES"
>Properties</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.CONSEQUENCES"
>Consequences</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.CONSTRAINTS"
>Constraints</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.CONFLICTS"
>Conflicts</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.CDL"
>CDL</A
></DT
><DT
><A
HREF="overview.html#CONCEPTS.TERMINOLOGY.REPO"
>Component Repository</A
></DT
></DL
></DD
><DT
><A
HREF="overview.configurability.html"
>Why Configurability?</A
></DT
><DT
><A
HREF="overview.approaches.html"
>Approaches to Configurability</A
></DT
><DT
><A
HREF="overview.degress.html"
>Degrees of Configurability</A
></DT
><DT
><A
HREF="overview.warning.html"
>Warnings</A
></DT
></DL
></DD
><DT
>2. <A
HREF="package.html"
>Package Organization</A
></DT
><DD
><DL
><DT
><A
HREF="package.html#PACKAGE.HIERARCHY"
>Packages and the Component Repository</A
></DT
><DT
><A
HREF="package.versions.html"
>Package Versioning</A
></DT
><DT
><A
HREF="package.contents.html"
>Package Contents and Layout</A
></DT
><DD
><DL
><DT
><A
HREF="package.contents.html#PACKAGE.BUILD"
>Outline of the Build Process</A
></DT
><DT
><A
HREF="package.contents.html#PACKAGE.SOURCE"
>Configurable Source Code</A
></DT
><DT
><A
HREF="package.contents.html#PACKAGE.HEADERS"
>Exported Header Files</A
></DT
><DT
><A
HREF="package.contents.html#PACKAGE.DOCUMENTATION"
>Package Documentation</A
></DT
><DT
><A
HREF="package.contents.html#PACKAGE.TESTS"
>Test Cases</A
></DT
><DT
><A
HREF="package.contents.html#PACKAGE.HOST"
>Host-side Support</A
></DT
></DL
></DD
><DT
><A
HREF="package.distrib.html"
>Making a Package Distribution</A
></DT
><DD
><DL
><DT
><A
HREF="package.distrib.html#PACKAGE.DISTRIB.FORMAT"
>The <SPAN
CLASS="APPLICATION"
>eCos</SPAN
> package distribution file format</A
></DT
><DT
><A
HREF="package.distrib.html#PACKAGE.DISTRIB.PREPARE"
>Preparing eCos packages for distribution</A
></DT
></DL
></DD
></DL
></DD
><DT
>3. <A
HREF="language.html"
>The CDL Language</A
></DT
><DD
><DL
><DT
><A
HREF="language.html#LANGUAGE.OVERVIEW"
>Language Overview</A
></DT
><DT
><A
HREF="language.commands.html"
>CDL Commands</A
></DT
><DT
><A
HREF="language.properties.html"
>CDL Properties</A
></DT
><DD
><DL
><DT
><A
HREF="language.properties.html#LANGUAGE.PROPERTIES.USER"
>Information-providing Properties</A
></DT
><DT
><A
HREF="language.properties.html#LANGUAGE.PROPERTIES.HIERARCHY"
>The Configuration Hierarchy</A
></DT
><DT
><A
HREF="language.properties.html#LANGUAGE.PROPERTIES.VALUE"
>Value-related Properties</A
></DT
><DT
><A
HREF="language.properties.html#LANGUAGE.PROPERTIES.DEFINE"
>Generating the Configuration Header Files</A
></DT
><DT
><A
HREF="language.properties.html#LANGUAGE.PROPERTIES.BUILD"
>Controlling what gets Built</A
></DT
><DT
><A
HREF="language.properties.html#LANGUAGE.PROPERTIES.MISCELLANEOUS"
>Miscellaneous Properties</A
></DT
></DL
></DD
><DT
><A
HREF="language.naming.html"
>Option Naming Convention</A
></DT
><DT
><A
HREF="language.tcl.html"
>An Introduction to Tcl</A
></DT
><DT
><A
HREF="language.values.html"
>Values and Expressions</A
></DT
><DD
><DL
><DT
><A
HREF="language.values.html#LANGUAGE.VALUES.VALUE"
>Option Values</A
></DT
><DT
><A
HREF="language.values.html#LANGUAGE.EXPRESSION"
>Ordinary Expressions</A
></DT
><DT
><A
HREF="language.values.html#LANGUAGE.FUNCTIONS"
>Functions</A
></DT
><DT
><A
HREF="language.values.html#LANGUAGE.GOAL-EXPRESSION"
>Goal Expressions</A
></DT
><DT
><A
HREF="language.values.html#LANGUAGE.LIST-EXPRESSION"
>List Expressions</A
></DT
></DL
></DD
><DT
><A
HREF="language.interface.html"
>Interfaces</A
></DT
><DT
><A
HREF="language.database.html"
>Updating the <SPAN
CLASS="DATABASE"
>ecos.db</SPAN
> database</A
></DT
></DL
></DD
><DT
>4. <A
HREF="build.html"
>The Build Process</A
></DT
><DD
><DL
><DT
><A
HREF="build.html#BUILD.OUTLINE"
>Build Tree Generation</A
></DT
><DT
><A
HREF="build.headers.html"
>Configuration Header File Generation</A
></DT
><DD
><DL
><DT
><A
HREF="build.headers.html#BUILD.HEADERS.SYSTEM.H"
>The <TT
CLASS="FILENAME"
>system.h</TT
> Header</A
></DT
></DL
></DD
><DT
><A
HREF="build.make.html"
>Building eCos</A
></DT
><DD
><DL
><DT
><A
HREF="build.make.html#BUILD.MAKE.UPDATE"
>Updating the Build Tree</A
></DT
><DT
><A
HREF="build.make.html#BUILD.MAKE.EXPORT"
>Exporting Public Header Files</A
></DT
><DT
><A
HREF="build.make.html#BUILD.MAKE.COMPILES"
>Compiling</A
></DT
><DT
><A
HREF="build.make.html#BUILD.MAKE.LIBRARIES"
>Generating the Libraries</A
></DT
><DT
><A
HREF="build.make.html#BUILD.EXTRAS"
>The <TT
CLASS="FILENAME"
>extras.o</TT
> file</A
></DT
><DT
><A
HREF="build.make.html#BUILD.FLAGS"
>Compilers and Flags</A
></DT
><DT
><A
HREF="build.make.html#BUILD.CUSTOM"
>Custom Build Steps</A
></DT
><DT
><A
HREF="build.make.html#BUILD.STARTUP"
>Startup Code</A
></DT
><DT
><A
HREF="build.make.html#BUILD.LINKERSCRIPT"
>The Linker Script</A
></DT
></DL
></DD
><DT
><A
HREF="build.tests.html"
>Building Test Cases</A
></DT
></DL
></DD
><DT
>5. <A
HREF="reference.html"
>CDL Language Specification</A
></DT
><DD
><DL
><DT
><A
HREF="ref.cdl-option.html"
><TT
CLASS="LITERAL"
>cdl_option</TT
></A
>&nbsp;--&nbsp;Define a single configuration option</DT
><DT
><A
HREF="ref.cdl-component.html"
><TT
CLASS="LITERAL"
>cdl_component</TT
></A
>&nbsp;--&nbsp;Define a component, a collection of configuration options</DT
><DT
><A
HREF="ref.cdl-package.html"
><TT
CLASS="LITERAL"
>cdl_package</TT
></A
>&nbsp;--&nbsp;Define a package, a component that can be distributed</DT
><DT
><A
HREF="ref.cdl-interface.html"
><TT
CLASS="LITERAL"
>cdl_interface</TT
></A
>&nbsp;--&nbsp;Define an interface, functionality that can be provided by
a number of different implementations.</DT
><DT
><A
HREF="ref.active-if.html"
><SPAN
CLASS="PROPERTY"
>active_if</SPAN
></A
>&nbsp;--&nbsp;Allow additional control over the active state of an
option or other CDL entity.</DT
><DT
><A
HREF="ref.calculated.html"
><SPAN
CLASS="PROPERTY"
>calculated</SPAN
></A
>&nbsp;--&nbsp;Used if the current option's value is not user-modifiable,
but is calculated using a suitable CDL expression.</DT
><DT
><A
HREF="ref.compile.html"
><SPAN
CLASS="PROPERTY"
>compile</SPAN
></A
>&nbsp;--&nbsp;List the source files that should be built if this option
is active and enabled.</DT
><DT
><A
HREF="ref.default-value.html"
><SPAN
CLASS="PROPERTY"
>default_value</SPAN
></A
>&nbsp;--&nbsp;Provide a default value for this option using a CDL expression.</DT
><DT
><A
HREF="ref.define.html"
><SPAN
CLASS="PROPERTY"
>define</SPAN
></A
>&nbsp;--&nbsp;Specify additional <TT
CLASS="LITERAL"
>#define</TT
> symbols that
should go into the owning package's configuration header file.</DT
><DT
><A
HREF="ref.define-format.html"
><SPAN
CLASS="PROPERTY"
>define_format</SPAN
></A
>&nbsp;--&nbsp;Control how an option's value will appear in the
configuration header file.</DT
><DT
><A
HREF="ref.define-header.html"
><SPAN
CLASS="PROPERTY"
>define_header</SPAN
></A
>&nbsp;--&nbsp;Specify the  configuration header file that
will be generated for a given package.</DT
><DT
><A
HREF="ref.define-proc.html"
><SPAN
CLASS="PROPERTY"
>define_proc</SPAN
></A
>&nbsp;--&nbsp;Use a fragment of Tcl code to output additional data to
configuration header files.</DT
><DT
><A
HREF="ref.description.html"
><SPAN
CLASS="PROPERTY"
>description</SPAN
></A
>&nbsp;--&nbsp;Provide a textual description for an option.</DT
><DT
><A
HREF="ref.display.html"
><SPAN
CLASS="PROPERTY"
>display</SPAN
></A
>&nbsp;--&nbsp;Provide a short string describing this option.</DT
><DT
><A
HREF="ref.doc.html"
><SPAN
CLASS="PROPERTY"
>doc</SPAN
></A
>&nbsp;--&nbsp;The location of online-documentation for a configuration option.</DT
><DT
><A
HREF="ref.flavor.html"
><SPAN
CLASS="PROPERTY"
>flavor</SPAN
></A
>&nbsp;--&nbsp;Specify the nature of a configuration option.</DT
><DT
><A
HREF="ref.hardware.html"
><SPAN
CLASS="PROPERTY"
>hardware</SPAN
></A
>&nbsp;--&nbsp;Specify that a package is tied to specific hardware.</DT
><DT
><A
HREF="ref.if-define.html"
><SPAN
CLASS="PROPERTY"
>if_define</SPAN
></A
>&nbsp;--&nbsp;Output a common preprocessor construct to a configuration
header file.</DT
><DT
><A
HREF="ref.implements.html"
><SPAN
CLASS="PROPERTY"
>implements</SPAN
></A
>&nbsp;--&nbsp;Enabling this option provides one instance of a more
general interface.</DT
><DT
><A
HREF="ref.include-dir.html"
><SPAN
CLASS="PROPERTY"
>include_dir</SPAN
></A
>&nbsp;--&nbsp;Specify the desired location of a package's exported
header files in the install tree.</DT
><DT
><A
HREF="ref.include-files.html"
><SPAN
CLASS="PROPERTY"
>include_files</SPAN
></A
>&nbsp;--&nbsp;List the header files that are exported by a package.</DT
><DT
><A
HREF="ref.legal-values.html"
><SPAN
CLASS="PROPERTY"
>legal_values</SPAN
></A
>&nbsp;--&nbsp;Impose constraints on the possible values for an option.</DT
><DT
><A
HREF="ref.library.html"
><SPAN
CLASS="PROPERTY"
>library</SPAN
></A
>&nbsp;--&nbsp;Specify which library should contain the object files
generated by building this package.</DT
><DT
><A
HREF="ref.make.html"
><SPAN
CLASS="PROPERTY"
>make</SPAN
></A
>&nbsp;--&nbsp;Define an additional custom build step associated with an
option, resulting in a target that should not go directly into a library.</DT
><DT
><A
HREF="ref.make-object.html"
><SPAN
CLASS="PROPERTY"
>make_object</SPAN
></A
>&nbsp;--&nbsp;Define a custom build step, resulting in an object file
that should go into a library.</DT
><DT
><A
HREF="ref.no-define.html"
><SPAN
CLASS="PROPERTY"
>no_define</SPAN
></A
>&nbsp;--&nbsp;Suppress the normal generation of a preprocessor
<TT
CLASS="LITERAL"
>#define</TT
> symbol in a configuration header file.</DT
><DT
><A
HREF="ref.parent.html"
><SPAN
CLASS="PROPERTY"
>parent</SPAN
></A
>&nbsp;--&nbsp;Control the location of an option in the configuration hierarchy.</DT
><DT
><A
HREF="ref.requires.html"
><SPAN
CLASS="PROPERTY"
>requires</SPAN
></A
>&nbsp;--&nbsp;List constraints that the configuration should satisfy if
a given option is active and enabled..</DT
><DT
><A
HREF="ref.script.html"
><SPAN
CLASS="PROPERTY"
>script</SPAN
></A
>&nbsp;--&nbsp;Include additional configuration information from another
CDL script.</DT
></DL
></DD
><DT
>6. <A
HREF="advanced.html"
>Templates, Targets and Other Topics</A
></DT
><DD
><DL
><DT
><A
HREF="advanced.html#ADVANCED.TEMPLATES"
>Templates</A
></DT
><DT
><A
HREF="advanced.targets.html"
>Targets</A
></DT
></DL
></DD
></DL
></DIV
></DIV
><DIV
CLASS="NAVFOOTER"
><HR
ALIGN="LEFT"
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Line No.	Rev	Author	Line
1	1254	phoenix	`<!-- Copyright (C) 2003 Red Hat, Inc. -->`
2			`<!-- This material may be distributed only subject to the terms -->`
3			`<!-- and conditions set forth in the Open Publication License, v1.0 -->`
4			`<!-- or later (the latest version is presently available at -->`
5			`<!-- http://www.opencontent.org/openpub/). -->`
6			`<!-- Distribution of the work or derivative of the work in any -->`
7			`<!-- standard (paper) book form is prohibited unless prior -->`
8			`<!-- permission is obtained from the copyright holder. -->`
9			`<HTML`
10			`><HEAD`
11			`><TITLE`
12			`>The eCos Component Writer's Guide</TITLE`
13			`><meta name="MSSmartTagsPreventParsing" content="TRUE">`
14			`<META`
15			`NAME="GENERATOR"`
16			`CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+`
17			`"><LINK`
18			`REL="NEXT"`
19			`TITLE="Overview"`
20			`HREF="overview.html"></HEAD`
21			`><BODY`
22			`CLASS="BOOK"`
23			`BGCOLOR="#FFFFFF"`
24			`TEXT="#000000"`
25			`LINK="#0000FF"`
26			`VLINK="#840084"`
27			`ALINK="#0000FF"`
28			`><DIV`
29			`CLASS="BOOK"`
30			`><A`
31			`NAME="CDL-GUIDE"><DIV`
32			`CLASS="TITLEPAGE"`
33			`><H1`
34			`CLASS="TITLE"`
35			`><A`
36			`NAME="AEN4">The <SPAN`
37			`CLASS="APPLICATION"`
38			`>eCos</SPAN`
39			`> Component Writer's Guide</H1`
40			`><H3`
41			`CLASS="AUTHOR"`
42			`><A`
43			`NAME="AEN8">Bart Veer</H3`
44			`><H3`
45			`CLASS="AUTHOR"`
46			`><A`
47			`NAME="AEN11">John Dallaway</H3`
48			`><P`
49			`CLASS="COPYRIGHT"`
50			`>Copyright © 2000, 2001 by Red Hat Inc.</P`
51			`><HR></DIV`
52			`><DIV`
53			`CLASS="TOC"`
54			`><DL`
55			`><DT`
56			`><B`
57			`>Table of Contents</B`
58			`></DT`
59			`><DT`
60			`>1. <A`
61			`HREF="overview.html"`
62			`>Overview</A`
63			`></DT`
64			`><DD`
65			`><DL`
66			`><DT`
67			`><A`
68			`HREF="overview.html#OVERVIEW.TERMINOLOGY"`
69			`>Terminology</A`
70			`></DT`
71			`><DD`
72			`><DL`
73			`><DT`
74			`><A`
75			`HREF="overview.html#CONCEPTS.TERMINOLOGY.FRAMEWORK"`
76			`>Component Framework</A`
77			`></DT`
78			`><DT`
79			`><A`
80			`HREF="overview.html#CONCEPTS.TERMINOLOGY.OPTION"`
81			`>Configuration Option</A`
82			`></DT`
83			`><DT`
84			`><A`
85			`HREF="overview.html#CONCEPTS.TERMINOLOGY.COMPONENT"`
86			`>Component</A`
87			`></DT`
88			`><DT`
89			`><A`
90			`HREF="overview.html#CONCEPTS.TERMINOLOGY.PACKAGE"`
91			`>Package</A`
92			`></DT`
93			`><DT`
94			`><A`
95			`HREF="overview.html#CONCEPTS.TERMINOLOGY.CONFIGURATION"`
96			`>Configuration</A`
97			`></DT`
98			`><DT`
99			`><A`
100			`HREF="overview.html#CONCEPTS.TERMINOLOGY.TARGET"`
101			`>Target</A`
102			`></DT`
103			`><DT`
104			`><A`
105			`HREF="overview.html#CONCEPTS.TERMINOLOGY.TEMPLATE"`
106			`>Template</A`
107			`></DT`
108			`><DT`
109			`><A`
110			`HREF="overview.html#CONCEPTS.TERMINOLOGY.PROPERTIES"`
111			`>Properties</A`
112			`></DT`
113			`><DT`
114			`><A`
115			`HREF="overview.html#CONCEPTS.TERMINOLOGY.CONSEQUENCES"`
116			`>Consequences</A`
117			`></DT`
118			`><DT`
119			`><A`
120			`HREF="overview.html#CONCEPTS.TERMINOLOGY.CONSTRAINTS"`
121			`>Constraints</A`
122			`></DT`
123			`><DT`
124			`><A`
125			`HREF="overview.html#CONCEPTS.TERMINOLOGY.CONFLICTS"`
126			`>Conflicts</A`
127			`></DT`
128			`><DT`
129			`><A`
130			`HREF="overview.html#CONCEPTS.TERMINOLOGY.CDL"`
131			`>CDL</A`
132			`></DT`
133			`><DT`
134			`><A`
135			`HREF="overview.html#CONCEPTS.TERMINOLOGY.REPO"`
136			`>Component Repository</A`
137			`></DT`
138			`></DL`
139			`></DD`
140			`><DT`
141			`><A`
142			`HREF="overview.configurability.html"`
143			`>Why Configurability?</A`
144			`></DT`
145			`><DT`
146			`><A`
147			`HREF="overview.approaches.html"`
148			`>Approaches to Configurability</A`
149			`></DT`
150			`><DT`
151			`><A`
152			`HREF="overview.degress.html"`
153			`>Degrees of Configurability</A`
154			`></DT`
155			`><DT`
156			`><A`
157			`HREF="overview.warning.html"`
158			`>Warnings</A`
159			`></DT`
160			`></DL`
161			`></DD`
162			`><DT`
163			`>2. <A`
164			`HREF="package.html"`
165			`>Package Organization</A`
166			`></DT`
167			`><DD`
168			`><DL`
169			`><DT`
170			`><A`
171			`HREF="package.html#PACKAGE.HIERARCHY"`
172			`>Packages and the Component Repository</A`
173			`></DT`
174			`><DT`
175			`><A`
176			`HREF="package.versions.html"`
177			`>Package Versioning</A`
178			`></DT`
179			`><DT`
180			`><A`
181			`HREF="package.contents.html"`
182			`>Package Contents and Layout</A`
183			`></DT`
184			`><DD`
185			`><DL`
186			`><DT`
187			`><A`
188			`HREF="package.contents.html#PACKAGE.BUILD"`
189			`>Outline of the Build Process</A`
190			`></DT`
191			`><DT`
192			`><A`
193			`HREF="package.contents.html#PACKAGE.SOURCE"`
194			`>Configurable Source Code</A`
195			`></DT`
196			`><DT`
197			`><A`
198			`HREF="package.contents.html#PACKAGE.HEADERS"`
199			`>Exported Header Files</A`
200			`></DT`
201			`><DT`
202			`><A`
203			`HREF="package.contents.html#PACKAGE.DOCUMENTATION"`
204			`>Package Documentation</A`
205			`></DT`
206			`><DT`
207			`><A`
208			`HREF="package.contents.html#PACKAGE.TESTS"`
209			`>Test Cases</A`
210			`></DT`
211			`><DT`
212			`><A`
213			`HREF="package.contents.html#PACKAGE.HOST"`
214			`>Host-side Support</A`
215			`></DT`
216			`></DL`
217			`></DD`
218			`><DT`
219			`><A`
220			`HREF="package.distrib.html"`
221			`>Making a Package Distribution</A`
222			`></DT`
223			`><DD`
224			`><DL`
225			`><DT`
226			`><A`
227			`HREF="package.distrib.html#PACKAGE.DISTRIB.FORMAT"`
228			`>The <SPAN`
229			`CLASS="APPLICATION"`
230			`>eCos</SPAN`
231			`> package distribution file format</A`
232			`></DT`
233			`><DT`
234			`><A`
235			`HREF="package.distrib.html#PACKAGE.DISTRIB.PREPARE"`
236			`>Preparing eCos packages for distribution</A`
237			`></DT`
238			`></DL`
239			`></DD`
240			`></DL`
241			`></DD`
242			`><DT`
243			`>3. <A`
244			`HREF="language.html"`
245			`>The CDL Language</A`
246			`></DT`
247			`><DD`
248			`><DL`
249			`><DT`
250			`><A`
251			`HREF="language.html#LANGUAGE.OVERVIEW"`
252			`>Language Overview</A`
253			`></DT`
254			`><DT`
255			`><A`
256			`HREF="language.commands.html"`
257			`>CDL Commands</A`
258			`></DT`
259			`><DT`
260			`><A`
261			`HREF="language.properties.html"`
262			`>CDL Properties</A`
263			`></DT`
264			`><DD`
265			`><DL`
266			`><DT`
267			`><A`
268			`HREF="language.properties.html#LANGUAGE.PROPERTIES.USER"`
269			`>Information-providing Properties</A`
270			`></DT`
271			`><DT`
272			`><A`
273			`HREF="language.properties.html#LANGUAGE.PROPERTIES.HIERARCHY"`
274			`>The Configuration Hierarchy</A`
275			`></DT`
276			`><DT`
277			`><A`
278			`HREF="language.properties.html#LANGUAGE.PROPERTIES.VALUE"`
279			`>Value-related Properties</A`
280			`></DT`
281			`><DT`
282			`><A`
283			`HREF="language.properties.html#LANGUAGE.PROPERTIES.DEFINE"`
284			`>Generating the Configuration Header Files</A`
285			`></DT`
286			`><DT`
287			`><A`
288			`HREF="language.properties.html#LANGUAGE.PROPERTIES.BUILD"`
289			`>Controlling what gets Built</A`
290			`></DT`
291			`><DT`
292			`><A`
293			`HREF="language.properties.html#LANGUAGE.PROPERTIES.MISCELLANEOUS"`
294			`>Miscellaneous Properties</A`
295			`></DT`
296			`></DL`
297			`></DD`
298			`><DT`
299			`><A`
300			`HREF="language.naming.html"`
301			`>Option Naming Convention</A`
302			`></DT`
303			`><DT`
304			`><A`
305			`HREF="language.tcl.html"`
306			`>An Introduction to Tcl</A`
307			`></DT`
308			`><DT`
309			`><A`
310			`HREF="language.values.html"`
311			`>Values and Expressions</A`
312			`></DT`
313			`><DD`
314			`><DL`
315			`><DT`
316			`><A`
317			`HREF="language.values.html#LANGUAGE.VALUES.VALUE"`
318			`>Option Values</A`
319			`></DT`
320			`><DT`
321			`><A`
322			`HREF="language.values.html#LANGUAGE.EXPRESSION"`
323			`>Ordinary Expressions</A`
324			`></DT`
325			`><DT`
326			`><A`
327			`HREF="language.values.html#LANGUAGE.FUNCTIONS"`
328			`>Functions</A`
329			`></DT`
330			`><DT`
331			`><A`
332			`HREF="language.values.html#LANGUAGE.GOAL-EXPRESSION"`
333			`>Goal Expressions</A`
334			`></DT`
335			`><DT`
336			`><A`
337			`HREF="language.values.html#LANGUAGE.LIST-EXPRESSION"`
338			`>List Expressions</A`
339			`></DT`
340			`></DL`
341			`></DD`
342			`><DT`
343			`><A`
344			`HREF="language.interface.html"`
345			`>Interfaces</A`
346			`></DT`
347			`><DT`
348			`><A`
349			`HREF="language.database.html"`
350			`>Updating the <SPAN`
351			`CLASS="DATABASE"`
352			`>ecos.db</SPAN`
353			`> database</A`
354			`></DT`
355			`></DL`
356			`></DD`
357			`><DT`
358			`>4. <A`
359			`HREF="build.html"`
360			`>The Build Process</A`
361			`></DT`
362			`><DD`
363			`><DL`
364			`><DT`
365			`><A`
366			`HREF="build.html#BUILD.OUTLINE"`
367			`>Build Tree Generation</A`
368			`></DT`
369			`><DT`
370			`><A`
371			`HREF="build.headers.html"`
372			`>Configuration Header File Generation</A`
373			`></DT`
374			`><DD`
375			`><DL`
376			`><DT`
377			`><A`
378			`HREF="build.headers.html#BUILD.HEADERS.SYSTEM.H"`
379			`>The <TT`
380			`CLASS="FILENAME"`
381			`>system.h</TT`
382			`> Header</A`
383			`></DT`
384			`></DL`
385			`></DD`
386			`><DT`
387			`><A`
388			`HREF="build.make.html"`
389			`>Building eCos</A`
390			`></DT`
391			`><DD`
392			`><DL`
393			`><DT`
394			`><A`
395			`HREF="build.make.html#BUILD.MAKE.UPDATE"`
396			`>Updating the Build Tree</A`
397			`></DT`
398			`><DT`
399			`><A`
400			`HREF="build.make.html#BUILD.MAKE.EXPORT"`
401			`>Exporting Public Header Files</A`
402			`></DT`
403			`><DT`
404			`><A`
405			`HREF="build.make.html#BUILD.MAKE.COMPILES"`
406			`>Compiling</A`
407			`></DT`
408			`><DT`
409			`><A`
410			`HREF="build.make.html#BUILD.MAKE.LIBRARIES"`
411			`>Generating the Libraries</A`
412			`></DT`
413			`><DT`
414			`><A`
415			`HREF="build.make.html#BUILD.EXTRAS"`
416			`>The <TT`
417			`CLASS="FILENAME"`
418			`>extras.o</TT`
419			`> file</A`
420			`></DT`
421			`><DT`
422			`><A`
423			`HREF="build.make.html#BUILD.FLAGS"`
424			`>Compilers and Flags</A`
425			`></DT`
426			`><DT`
427			`><A`
428			`HREF="build.make.html#BUILD.CUSTOM"`
429			`>Custom Build Steps</A`
430			`></DT`
431			`><DT`
432			`><A`
433			`HREF="build.make.html#BUILD.STARTUP"`
434			`>Startup Code</A`
435			`></DT`
436			`><DT`
437			`><A`
438			`HREF="build.make.html#BUILD.LINKERSCRIPT"`
439			`>The Linker Script</A`
440			`></DT`
441			`></DL`
442			`></DD`
443			`><DT`
444			`><A`
445			`HREF="build.tests.html"`
446			`>Building Test Cases</A`
447			`></DT`
448			`></DL`
449			`></DD`
450			`><DT`
451			`>5. <A`
452			`HREF="reference.html"`
453			`>CDL Language Specification</A`
454			`></DT`
455			`><DD`
456			`><DL`
457			`><DT`
458			`><A`
459			`HREF="ref.cdl-option.html"`
460			`><TT`
461			`CLASS="LITERAL"`
462			`>cdl_option</TT`
463			`></A`
464			`> -- Define a single configuration option</DT`
465			`><DT`
466			`><A`
467			`HREF="ref.cdl-component.html"`
468			`><TT`
469			`CLASS="LITERAL"`
470			`>cdl_component</TT`
471			`></A`
472			`> -- Define a component, a collection of configuration options</DT`
473			`><DT`
474			`><A`
475			`HREF="ref.cdl-package.html"`
476			`><TT`
477			`CLASS="LITERAL"`
478			`>cdl_package</TT`
479			`></A`
480			`> -- Define a package, a component that can be distributed</DT`
481			`><DT`
482			`><A`
483			`HREF="ref.cdl-interface.html"`
484			`><TT`
485			`CLASS="LITERAL"`
486			`>cdl_interface</TT`
487			`></A`
488			`> -- Define an interface, functionality that can be provided by`
489			`a number of different implementations.</DT`
490			`><DT`
491			`><A`
492			`HREF="ref.active-if.html"`
493			`><SPAN`
494			`CLASS="PROPERTY"`
495			`>active_if</SPAN`
496			`></A`
497			`> -- Allow additional control over the active state of an`
498			`option or other CDL entity.</DT`
499			`><DT`
500			`><A`

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