core/com.nokia.carbide.cpp.compiler.doc.user/html/performance/perf_precompiled_auto.htm
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     6 <title>Updating a Precompiled File Automatically</title>
       
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    10 <h3>Updating a Precompiled File Automatically</h3>
       
    11 <p>Use the Carbide IDE&rsquo;s project manager to update a precompiled header automatically. The IDE creates a precompiled file from a source code file during a compile, update, or make operation if the source code file meets these criteria:</p>
       
    12 <ul>
       
    13   <li>The text file name ends with .pch (for C header files) or .pch++ (for C++ header files)</li>
       
    14   <li> The file is in a project&rsquo;s build target</li>
       
    15   <li>The file uses the pragma precompile_target pragma</li>
       
    16   <li>The file, or files it depends on, have been modified</li>
       
    17 </ul>
       
    18 <p class="fix">See the Carbide IDE User Guide for information on how the IDE determines that a file must be updated.</p>
       
    19 <p>The IDE uses the build target&rsquo;s settings to preprocess and precompile files.<br />
       
    20 </p>
       
    21 <div id="footer">Copyright &copy; 2009 Nokia Corporation and/or its subsidiary(-ies). All rights reserved. <br>License: <a href="http://www.eclipse.org/legal/epl-v10.html">http://www.eclipse.org/legal/epl-v10.html</a></div>
       
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