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core/com.nokia.carbide.cpp.compiler.doc.user/html/c_compiler/c_pre_header_files.htm
author timkelly
Thu, 10 Dec 2009 13:45:47 -0600
branchRCL_2_4
changeset 671 80524b72f957
parent 0 fb279309251b
child 1641 2b3996fc09a1
permissions -rw-r--r--
Add S60 5.2 support.
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0//EN"><html>
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<head>
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<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" />
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<meta http-equiv="Content-Style-Type" content="text/css" />
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<meta name="LASTUPDATED" content="06/17/05 11:09:43" />
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<title>Precompiled Header Files</title>
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<link rel="StyleSheet" href="../../book.css" type="text/css"/>
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</head>
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<body bgcolor="#FFFFFF">
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<h3>Precompiled Header Files</h3>
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<p>A precompiled header is an image of the compiler&rsquo;s symbol table. Create a precompiled header file for commonly included files. You can also use a precompiled header file to temporarily change header files that do not normally change otherwise (for example, OS ABI headers or standard ANSI library header files). Then replace the original header files with the precompiled header file to significantly improve compile time.</p>
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<p>A precompiled header cannot do any of the following:</p>
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<ul>
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  <li>Define non-inline functions</li>
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  <li>Define global data</li>
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  <li> Instantiate template data</li>
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  <li>Instantiate non-inline functions</li>
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</ul>
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<p>You must include precompiled headers before defining or declaring other objects. You can only use one precompiled header file in a translation unit.</p>
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<p>See also &ldquo;precompile_target&rdquo;.</p>
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<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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FCL/sftools/dev/ide/carbidecpp