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+>CDL Concepts</TITLE
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+REL="PREVIOUS"
+TITLE="eCos Programming Concepts and Techniques"
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+>eCos User Guide</TH
+></TR
+><TR
+><TD
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+><A
+HREF="ecos-programming-concepts-and-techniques.html"
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+><HR
+ALIGN="LEFT"
+WIDTH="100%"></DIV
+><DIV
+CLASS="CHAPTER"
+><H1
+><A
+NAME="CDL-CONCEPTS">Chapter 24. CDL Concepts</H1
+><DIV
+CLASS="TOC"
+><DL
+><DT
+><B
+>Table of Contents</B
+></DT
+><DT
+><A
+HREF="cdl-concepts.html#CDL-CONCEPTS-ABOUT"
+>About this chapter</A
+></DT
+><DT
+><A
+HREF="cdl-component-repository.html"
+>Component Repository</A
+></DT
+><DT
+><A
+HREF="cdl-component-definition-language.html"
+>Component Definition Language</A
+></DT
+><DT
+><A
+HREF="cdl-packages.html"
+>Packages</A
+></DT
+><DT
+><A
+HREF="cdl-configuration-items.html"
+>Configuration Items</A
+></DT
+><DT
+><A
+HREF="cdl-conflicts.html"
+>Conflicts</A
+></DT
+><DT
+><A
+HREF="cdl-templates.html"
+>Templates</A
+></DT
+></DL
+></DIV
+><DIV
+CLASS="SECT1"
+><H1
+CLASS="SECT1"
+><A
+NAME="CDL-CONCEPTS-ABOUT">About this chapter</H1
+><P
+>This chapter serves as a brief introduction to the
+ concepts involved in <SPAN
+CLASS="PRODUCTNAME"
+>eCos</SPAN
+> (Embedded Configurable Operating
+ System). It describes the configuration architecture and the
+ underlying technology to a level required for the embedded
+ systems developer to configure <SPAN
+CLASS="PRODUCTNAME"
+>eCos</SPAN
+>. It does not describe in
+ detail aspects such as how to write reusable components for
+ <SPAN
+CLASS="PRODUCTNAME"
+>eCos</SPAN
+>: this information is given in the <I
+CLASS="CITETITLE"
+>Component
+ Writer’s Guide</I
+>.</P
+><DIV
+CLASS="SECT2"
+><H2
+CLASS="SECT2"
+><A
+NAME="AEN1835">Background</H2
+><P
+>Software solutions for the embedded space place
+ particularly stringent demands on the developer, typically
+ represented as requirements for small memory footprint, high
+ performance and robustness. These demands are addressed in
+ <SPAN
+CLASS="PRODUCTNAME"
+>eCos</SPAN
+> by providing the ability to perform compile-time
+ specialization: the developer can tailor the operating
+ system to suit the needs of the application. In order to
+ make this process manageable, <SPAN
+CLASS="PRODUCTNAME"
+>eCos</SPAN
+> is built in the context
+ of a Configuration Infrastructure: a set of tools including
+ a <SPAN
+CLASS="APPLICATION"
+>Configuration Tool</SPAN
+> and a formal
+ description of the process of configuration by means of a
+ <SPAN
+CLASS="emphasis"
+><I
+CLASS="EMPHASIS"
+>Component Definition Language</I
+></SPAN
+>.</P
+></DIV
+><DIV
+CLASS="SECT2"
+><H2
+CLASS="SECT2"
+><A
+NAME="AEN1842">Configurations</H2
+><P
+><SPAN
+CLASS="PRODUCTNAME"
+>eCos</SPAN
+> is tailored at source level (that is, before
+ compilation or assembly) in order to create an <SPAN
+CLASS="PRODUCTNAME"
+>eCos</SPAN
+>
+ <SPAN
+CLASS="emphasis"
+><I
+CLASS="EMPHASIS"
+>configuration</I
+></SPAN
+>. In concrete terms, an
+ <SPAN
+CLASS="PRODUCTNAME"
+>eCos</SPAN
+> configuration takes the form of a configuration save
+ file (with extension .ecc) and set of files used to build
+ user applications (including, when built, a library file
+ against which the application is linked). </P
+></DIV
+></DIV
+></DIV
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+ALIGN="LEFT"
+WIDTH="100%"><TABLE
+SUMMARY="Footer navigation table"
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+VALIGN="top"
+><A
+HREF="ecos-programming-concepts-and-techniques.html"
+ACCESSKEY="P"
+>Prev</A
+></TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="ecos-user-guide.html"
+ACCESSKEY="H"
+>Home</A
+></TD
+><TD
+WIDTH="33%"
+ALIGN="right"
+VALIGN="top"
+><A
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+ACCESSKEY="N"
+>Next</A
+></TD
+></TR
+><TR
+><TD
+WIDTH="33%"
+ALIGN="left"
+VALIGN="top"
+><SPAN
+CLASS="PRODUCTNAME"
+>eCos</SPAN
+> Programming Concepts and Techniques</TD
+><TD
+WIDTH="34%"
+ALIGN="center"
+VALIGN="top"
+><A
+HREF="ecos-programming-concepts-and-techniques.html"
+ACCESSKEY="U"
+>Up</A
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+>
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