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<!-- Copyright (C) 2003 Red Hat, Inc. --><!-- This material may be distributed only subject to the terms --><!-- and conditions set forth in the Open Publication License, v1.0 --><!-- or later (the latest version is presently available at --><!-- http://www.opencontent.org/openpub/). --><!-- Distribution of the work or derivative of the work in any --><!-- standard (paper) book form is prohibited unless prior --><!-- permission is obtained from the copyright holder. --><HTML><HEAD><TITLE>Component Definition Language</TITLE><meta name="MSSmartTagsPreventParsing" content="TRUE"><METANAME="GENERATOR"CONTENT="Modular DocBook HTML Stylesheet Version 1.76b+"><LINKREL="HOME"TITLE="eCos User Guide"HREF="ecos-user-guide.html"><LINKREL="UP"TITLE="CDL Concepts"HREF="cdl-concepts.html"><LINKREL="PREVIOUS"TITLE="Component Repository"HREF="cdl-component-repository.html"><LINKREL="NEXT"TITLE="Packages"HREF="cdl-packages.html"></HEAD><BODYCLASS="SECT1"BGCOLOR="#FFFFFF"TEXT="#000000"LINK="#0000FF"VLINK="#840084"ALINK="#0000FF"><DIVCLASS="NAVHEADER"><TABLESUMMARY="Header navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><THCOLSPAN="3"ALIGN="center">eCos User Guide</TH></TR><TR><TDWIDTH="10%"ALIGN="left"VALIGN="bottom"><AHREF="cdl-component-repository.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="80%"ALIGN="center"VALIGN="bottom">Chapter 24. CDL Concepts</TD><TDWIDTH="10%"ALIGN="right"VALIGN="bottom"><AHREF="cdl-packages.html"ACCESSKEY="N">Next</A></TD></TR></TABLE><HRALIGN="LEFT"WIDTH="100%"></DIV><DIVCLASS="SECT1"><H1CLASS="SECT1"><ANAME="CDL-COMPONENT-DEFINITION-LANGUAGE">Component Definition Language</H1><P>Part of the component repository is a set of files containing a definition of its structure. The form used for this purpose is the <SPANCLASS="emphasis"><ICLASS="EMPHASIS">Component Definition Language</I></SPAN> (CDL). CDL defines the relationships between components and other information used by tools such as the <SPANCLASS="PRODUCTNAME">eCos</SPAN><SPANCLASS="APPLICATION">Configuration Tool</SPAN>. CDL is generally formulated by the writers of components: it is not necessary to write or understand CDL in order for the embedded systems developer to construct an <SPANCLASS="PRODUCTNAME">eCos</SPAN> configuration. </P></DIV><DIVCLASS="NAVFOOTER"><HRALIGN="LEFT"WIDTH="100%"><TABLESUMMARY="Footer navigation table"WIDTH="100%"BORDER="0"CELLPADDING="0"CELLSPACING="0"><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top"><AHREF="cdl-component-repository.html"ACCESSKEY="P">Prev</A></TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="ecos-user-guide.html"ACCESSKEY="H">Home</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top"><AHREF="cdl-packages.html"ACCESSKEY="N">Next</A></TD></TR><TR><TDWIDTH="33%"ALIGN="left"VALIGN="top">Component Repository</TD><TDWIDTH="34%"ALIGN="center"VALIGN="top"><AHREF="cdl-concepts.html"ACCESSKEY="U">Up</A></TD><TDWIDTH="33%"ALIGN="right"VALIGN="top">Packages</TD></TR></TABLE></DIV></BODY></HTML>⌨️ 快捷键说明
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