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>Packages</TITLE
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>eCos User Guide</TH
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>eCos User Guide</TH
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>Chapter 24. CDL Concepts</TD
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>Chapter 24. CDL Concepts</TD
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NAME="CDL-PACKAGES">Packages</H1
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NAME="CDL-PACKAGES">Packages</H1
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><P
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><P
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>The building blocks of an <SPAN
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>The building blocks of an <SPAN
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CLASS="PRODUCTNAME"
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CLASS="PRODUCTNAME"
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>eCos</SPAN
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>eCos</SPAN
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> configuration are called
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> configuration are called
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<SPAN
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<SPAN
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CLASS="emphasis"
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><I
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><I
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CLASS="EMPHASIS"
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>packages</I
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>packages</I
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></SPAN
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></SPAN
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>. Packages are the units of
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>. Packages are the units of
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software distribution. A set of core packages (such as
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software distribution. A set of core packages (such as
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kernel, C library and math library) is provided by Red Hat:
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kernel, C library and math library) is provided by Red Hat:
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additional third-party packages will be available in
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additional third-party packages will be available in
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future.</P
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future.</P
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><P
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><P
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>A package may exist in one of a number of <SPAN
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>A package may exist in one of a number of <SPAN
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CLASS="EMPHASIS"
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>versions</I
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>versions</I
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>.
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The default version is the <SPAN
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The default version is the <SPAN
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>current</I
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> version.
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> version.
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Only one version of a given package may be present in the component
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Only one version of a given package may be present in the component
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repository at any given time.</P
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repository at any given time.</P
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><P
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><P
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>Packages are organized in a tree hierarchy. Each package
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>Packages are organized in a tree hierarchy. Each package
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is either at the top-level or is the child of another package.</P
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is either at the top-level or is the child of another package.</P
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><P
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><P
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>The <SPAN
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>The <SPAN
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CLASS="PRODUCTNAME"
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>eCos</SPAN
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>eCos</SPAN
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> <SPAN
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> <SPAN
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CLASS="APPLICATION"
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CLASS="APPLICATION"
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> Package Administration Tool</SPAN
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> Package Administration Tool</SPAN
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> can be used to add or remove
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> can be used to add or remove
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packages from the component repository. The <SPAN
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packages from the component repository. The <SPAN
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CLASS="PRODUCTNAME"
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CLASS="PRODUCTNAME"
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>eCos</SPAN
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>eCos</SPAN
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> <SPAN
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> <SPAN
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CLASS="APPLICATION"
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CLASS="APPLICATION"
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>Configuration Tool</SPAN
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>Configuration Tool</SPAN
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> can be used to include or exclude packages from the configuration
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> can be used to include or exclude packages from the configuration
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being built.</P
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being built.</P
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