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<!-- Copyright (C) 2003 Red Hat, Inc.                                -->
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<HTML
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><TITLE
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>Coarse-grained Configuration</TITLE
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TITLE="Manual Configuration"
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TITLE="Fine-grained Configuration"
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>eCos User Guide</TH
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><A
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>Prev</A
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></TD
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><TD
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ALIGN="center"
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>Chapter 28. Manual Configuration</TD
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><TD
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>Next</A
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><DIV
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CLASS="SECT1"
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><H1
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CLASS="SECT1"
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><A
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NAME="COARSE-GRAINED-CONFIGURATION">Coarse-grained Configuration</H1
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><P
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>Coarse-grained configuration of
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          an <SPAN
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CLASS="PRODUCTNAME"
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>eCos</SPAN
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> system means making configuration changes using the
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          <B
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CLASS="COMMAND"
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>ecosconfig</B
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> tool. These changes
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          include: </P
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><P
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></P
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><OL
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TYPE="1"
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><LI
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><P
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>switching to different target hardware</P
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></LI
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><LI
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><P
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>switching to a different template</P
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></LI
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><LI
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><P
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>adding or removing a package</P
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></LI
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><LI
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><P
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>changing the version of a package</P
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></LI
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></OL
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><P
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>Whenever <B
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CLASS="COMMAND"
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>ecosconfig</B
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> generates or
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          updates an <SPAN
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CLASS="PRODUCTNAME"
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>eCos</SPAN
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> configuration, it generates a configuration
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          save file.</P
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><P
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>Suppose that the configuration was first created using
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          the following command line: </P
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><TR
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><TD
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><PRE
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>$ ecosconfig new stdeval1</PRE
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></TD
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></TR
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></TABLE
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><P
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>To change the target hardware to the Cogent CMA28x
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          PowerPC board, the following command would be needed:
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        </P
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><TABLE
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><TR
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><TD
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><PRE
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>$ ecosconfig target cma28x</PRE
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></TD
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></TABLE
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><P
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>To switch to the PowerPC simulator instead: </P
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><TR
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><TD
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><PRE
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>$ ecosconfig target psim</PRE
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></TD
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></TABLE
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><P
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>As the hardware changes, hardware-related packages such as
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the HAL packages and device drivers will be added to and removed
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from the configuration as appropriate. </P
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><P
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>To remove any package from the current configuration, use
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the <B
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CLASS="COMMAND"
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>remove</B
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> command: </P
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><TR
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><PRE
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>$ ecosconfig remove uitron</PRE
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></TABLE
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><P
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>You can disable multiple packages using multiple arguments,
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for example: </P
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>$ ecosconfig remove uitron libm</PRE
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><P
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>If this turns out to have been a mistake then you can
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          re-enable one or more packages with the
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          <B
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CLASS="COMMAND"
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>add</B
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> command: </P
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><TR
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><PRE
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>$ ecosconfig add libm</PRE
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></TD
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></TR
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></TABLE
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><P
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>Changing the desired version for a package is also
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          straightforward:</P
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><TR
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><TD
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><PRE
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>$ ecosconfig version v2_1 kernel</PRE
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></TD
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></TR
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></TABLE
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><P
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>It is necessary to regenerate the build tree and header
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          files following any changes to the configuration before
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          rebuilding <SPAN
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CLASS="PRODUCTNAME"
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>eCos</SPAN
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>:</P
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WIDTH="70%"
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><TR
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><TD
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><PRE
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>$ ecosconfig tree</PRE
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></TD
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></TR
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></TABLE
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ALIGN="left"
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HREF="ecos-packages.html"
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>Prev</A
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ALIGN="center"
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VALIGN="top"
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HREF="ecos-user-guide.html"
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>Home</A
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>Next</A
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></TR
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><TR
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><TD
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ALIGN="left"
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>Packages</TD
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><TD
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ALIGN="center"
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VALIGN="top"
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><A
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HREF="manual-configuration.html"
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ACCESSKEY="U"
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>Up</A
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></TD
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><TD
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WIDTH="33%"
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ALIGN="right"
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VALIGN="top"
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>Fine-grained Configuration</TD
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></TR
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></TABLE
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></DIV
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></BODY
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></HTML
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>

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