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<html>
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<head>
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<title>runtime.html</title>
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<! End Style Sheet Header -----------Insert Text Here --------------------->
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<center>
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<H1>The Runtime Environment</H1>
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<font color=red>S</font>oftware <font color=red>C</font>onfiguration,
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<font color=red>R</font>elease <font color=red>A</font>nd
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<font color=red>M</font>anagement
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</center>
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Contents<br>
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<ul>
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<li><a href=#QS>Configuration Environment</a>
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<li><a href=#AS>Application Environments</a>
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<li><a href=#RD>Runtime Documents</a>
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</ul>
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<hr>
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<a name=QS>
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<h1>Configuration Environment</h2></a>
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Each development area has associated with it an environment which is related to
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the tools specified in the configuration, and the environment variables
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specified in your Project Runtime Document. If you wish to set project-wide
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values, create a document called <em>Runtime</em> in your project configuration
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directory. This document is a <a href=#RD>Runtime Document</a>
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<p>
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The environment can be seen using the command
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<p>
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<pre>
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scram runtime [-csh|-sh]
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</pre>
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<p>
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Running this command will print the commands to the standard
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output in either the csh or sh flavours. Note that it will not actually
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run the commands - just print them. See scram runtime help for some examples
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of using this command.
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<p>
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All variables that are set also have an associated SCRAMRT_xxx variable. This
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allows scram to undo changes to the environment. This allows you, for example,
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to switch between project environments without the two interfering. This
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consistency checking is done automatically.
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<a name=AS>
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<h1>Application Environments</h1>
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<ul>
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An application may have environmental requirements in addition to the general
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configuration described above. The runtime mechanism supports
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this through the use of the <Runtime> tag.
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<p>
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Note that this means the Configuration Environment described above needs to
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be set in addition.
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<p>
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<li><h2>Setting an application environment</h2>
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<pre>
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scram runtime [-csh|-sh] runtimefile
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</pre>
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The file runtimefile is searched for in the following order :
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<p>
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<ol>
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<li>filename relative to current directory
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<li>filename relative to local_area/src
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<li>filename relative to release_area/src
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<li>location of a BuildFile relative to local_area/src
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<li>location of a BuildFile relative to release_area/src
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</ol>
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<p>
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<li><h2>Information on Runtime Variables</h2>
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<p>
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To print out any help available to describe the variables in the file, run the command
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<br>
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<pre>
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scram runtime info runtimefile [variable]
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</pre>
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<p>
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The option <em>variable</em> will restrict the output to the specified variable only.
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</ul>
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<a name=RD>
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<h1>Constructing Runtime Environment Documents</h1>
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An environment variable in the runtime file is indicated by
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<p>
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<font color=green>
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<Runtime name=<em>VARIABLE</em> value=<em>value1</em> [type=path]><br>
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Descriptive text of the variable - provides help to the users!<br>
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</Runtime>
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</font><p>
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<! Style Sheet Footer ---------------Do not change anything after this line-->
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<hr>
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<table border=1 width=100%>
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<td align=left>
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<a href=mailto:Shaun.Ashby@cern.ch
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>Shaun Ashby</a>
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</td>
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<td align=center>
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<SCRIPT LANGUAGE="JAVASCRIPT">document.write("Last Updated "+ document.lastModified );</SCRIPT>
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</td>
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