82 lines
5.5 KiB
HTML
82 lines
5.5 KiB
HTML
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<meta name="DC.Type" content="concept" />
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<meta name="DC.Title" content="Previous-release (*PRV) libraries" />
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<meta name="abstract" content="The CL compiler retrieves information about previous-release commands and files from CL previous-release (*PRV) libraries." />
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<meta name="description" content="The CL compiler retrieves information about previous-release commands and files from CL previous-release (*PRV) libraries." />
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<meta name="DC.subject" content="PRV, library, previous-release" />
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<title>Previous-release (*PRV) libraries</title>
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<!-- Java sync-link --><script language="Javascript" src="../rzahg/synch.js" type="text/javascript"></script>
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<h1 class="topictitle1">Previous-release (*PRV) libraries</h1>
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<div><p>The CL compiler retrieves information about previous-release commands
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and files from CL previous-release (*PRV) libraries.</p>
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<p>Two types of libraries contain previous-release support: system libraries
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and user libraries. The libraries have the names QSYSVxRxMx and QUSRVxRxMx.
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(VxRxMx represents the version, release, and modification level of the supported
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previous release). For example, the QUSRV4R5M0 library supports a system that
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runs Version 4 Release 5 Modification level 0 of the i5/OS™ licensed program.</p>
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<p>When the CL compiler compiles for a supported previous release, it first
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checks for commands and files in the previous-release libraries. When failing
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to find the command or file in the previous-release libraries, the system
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performs a search of the library list (*LIBL) or the qualified library.</p>
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<p>QSYSVxRxMx Libraries: The QSYSVxRxMx libraries install at the same time
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as the CL compiler support for a previous release installs. The QSYSVxRxMx
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libraries include the command definition objects and output files (*OUTFILE)
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that are found in library QSYS for that particular previous release.</p>
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<p>QUSRVxRxMx Libraries: You can create your own QUSRVxRxMx libraries to hold
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copies of your commands and files as they existed in the supported previous
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release. This is especially important if the commands or files have changed
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on the current release.</p>
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<p>When the compiler looks for previous-release commands and files, it checks
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the QUSRVxRxMx library (if it exists) before checking the QSYSVxRxMx library.</p>
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<div class="note"><span class="notetitle">Note:</span> Use the QUSRVxRxMx libraries to hold previous-release user commands
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and files, instead of the QSYSVxRxMx libraries. When installing future releases
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of the CL compiler, support for previous releases install as well. Once the
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previous-release support is installed, the QUSRVxRxMx libraries for releases
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that are no longer supported can be deleted.</div>
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<p>Do not add previous-release libraries to the library list (*LIBL). They
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contain commands and files that support earlier releases and cannot run on
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the current system. Only the CL compiler refers to and uses the commands and
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files in the previous-release libraries. The system commands that are supplied
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for a previous release are in the primary language for the system. There are
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no secondary national language versions available.</p>
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<div class="note"><span class="notetitle">Note:</span> CL programs that are compiled in the System/38™ environment cannot be saved
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for a previous release.</div>
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</div>
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<div>
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<div class="familylinks">
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<div class="parentlink"><strong>Parent topic:</strong> <a href="clcompiling.htm" title="The Create Control Language Program (CRTCLPGM) command allows you to compile CL source programs to use on a previous release by using the target release (TGTRLS) parameter.">Compile source programs for a previous release</a></div>
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</div>
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<div class="relinfo"><strong>Related information</strong><br />
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<div><a href="../cl/savobj.htm">Save Object (SAVOBJ) command</a></div>
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<div><a href="../cl/savchgobj.htm">Save Changed Object (SAVCHGOBJ) command</a></div>
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<div><a href="../cl/savlib.htm">Save Library (SAVLIB) command</a></div>
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</div>
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