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<B> Next:</B> <A NAME="tex2html1039"
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HREF="node51.html">5. Using SCRAM as</A>
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<H2><A NAME="SECTION00521000000000000000"></A><A NAME="sec:toolboxrep"></A><A NAME="1174"></A>
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<A NAME="1175"></A>
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<BR>
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4.2.1 The SCRAM Toolbox Repository
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</H2>
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A separate CVS repository must be created which contains
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documents describing external tools which are components of a <EM>toolbox</EM>.
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Each tool has a <TT>ToolDoc</TT> in which every
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version of the tool that can be used in a project environment is
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described. Any environment or makefile variable needed to use the
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external software is declared in the file and interpreted by <SMALL>SCRAM</SMALL> as
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a variable to be set up when creating the project area for the first
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time, or installing a new version of the tool into an existing area.
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A global configuration file (called
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`the configuration') indicates which tools and the corresponding versions that can
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be downloaded by <SMALL>SCRAM</SMALL> and used in project-space. The toolbox is
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tagged with a symbolic tag which is used to <I>freeze</I> the
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configuration: this tag is then specified in the project
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<TT>RequirementsDoc</TT> as the version to download.
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There is no requirement for a particular structure for the toolbox
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but including at least the following is recommended:
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<P>
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<DL>
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<DT><STRONG><B>Compiler Tools</B></STRONG></DT>
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<DD>
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<BR>
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Every architecture must have a compiler mapped to it. Any number of
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architectures can be defined for a project and any number of
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programming laguages can be supported (for example <TT>C</TT>,
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<TT>C++</TT>, <TT>Java</TT> or <TT>Fortran</TT>). The top-level
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<TT>BuildFile</TT> for the project defines the mapping between a
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<SMALL>SCRAM</SMALL> architecture and a compiler.
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</DD>
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<DT><STRONG><B>External Software</B></STRONG></DT>
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<DD>
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<BR>
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Each external software package to be used by a project should have a
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unique tool description file and there must be a separate entry for
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every version of the tool available.
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</DD>
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<DT><STRONG><B>Project Software Releases</B></STRONG></DT>
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<DD>
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<BR>
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Tool descriptions for all projects that provide libraries to be used
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by other projects or tools should be created.
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</DD>
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<DT><STRONG><B>A Configuration File</B></STRONG></DT>
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<DD>
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<BR>
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The most important element in the toolbox. The
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configuration describes the
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available tools and versions of these tools that are to be used in a
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project area.
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