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<H1><A NAME="SECTION00630000000000000000"></A><A NAME="sec:scramruntimeenv"></A><A NAME="1251"></A>
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<A NAME="1252"></A>
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<BR>
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5.3 The SCRAM Runtime Environment
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</H1>
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Each development area has an environment associated with it which is
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related to the tools used at build-time (the <I>configuration
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environment</I>) or project-wide defaults used at runtime (the
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<I>application environment</I>). <SMALL>SCRAM</SMALL> establishes the build-time
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environment through the parsing of the <TT>ToolDocs</TT> of the tools
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in the configuration environment. The values of any variables that
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describe paths to header files or required libraries are passed
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automatically to the build system at build-time. Project-wide defaults
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can be specified using a document called <TT>Runtime</TT>, which is
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located in project configuration directory and contains default
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settings for variables that should be available globally in the
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project area.
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<A NAME="1257"></A>
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The current environment can be viewed using the command
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<P>
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<TT>scram runtime</TT>
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<TT>-sh</TT> (<I>or</I> <TT>-csh</TT> for <TT>tcsh</TT> users)
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<P>
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choosing the appropriate shell type flag according to the type of
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shell in use. The runtime environment is not set automatically. To set
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it, evaluate the command above using the shell <TT>eval</TT> function:
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<P>
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<UL>
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<TT>eval</TT> `<TT>scram runtime</TT> <TT>-sh</TT>` (<I>or</I> <TT>-csh</TT>)
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</LI>
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</UL>
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<P>
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This must be set manually when running an executable since it
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sets the <TT>LD_LIBRARY_PATH</TT> and other environment
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variables, as defined in the configuration documents of the
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project. All variables that are set also have an associated
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<TT>SCRAMRT_xxxx</TT> variable. This allows <SMALL>SCRAM</SMALL> to undo any
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changes to the environment and facilitates the switching between
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project areas without interference. The consistency checking is done
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automatically.
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<P>
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<BR><HR>
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<!--Table of Child-Links-->
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<A NAME="CHILD_LINKS"><STRONG>Subsections</STRONG></A>
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<UL>
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<LI><A NAME="tex2html1137"
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HREF="node57.html">5.3.1 Constructing Runtime Environment Documents</A>
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<ADDRESS>
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scram-developers@cern.ch
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