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-<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>The GNU C++ Library Documentation</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><link rel="home" href="spine.html" title="The GNU C++ Library Documentation" /><link rel="next" href="manual/spine.html" title="The GNU C++ Library" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">The GNU C++ Library Documentation</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="manual/spine.html">Next</a></td></tr></table><hr /></div><div class="set" lang="en" xml:lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="set-index"></a>The GNU C++ Library Documentation</h1></div><div><div class="authorgroup"><div class="author"><h3 class="author"><span class="firstname"></span> <span class="surname"></span></h3></div><div class="author"><h3 class="author"><span class="firstname">Paolo</span> <span class="surname">Carlini</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Phil</span> <span class="surname">Edwards</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Doug</span> <span class="surname">Gregor</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Benjamin</span> <span class="surname">Kosnik</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Dhruv</span> <span class="surname">Matani</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Jason</span> <span class="surname">Merrill</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Mark</span> <span class="surname">Mitchell</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Nathan</span> <span class="surname">Myers</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Felix</span> <span class="surname">Natter</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Stefan</span> <span class="surname">Olsson</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Johannes</span> <span class="surname">Singler</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Ami</span> <span class="surname">Tavory</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Jonathan</span> <span class="surname">Wakely</span></h3></div></div></div><div><p class="copyright">Copyright © 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 
+<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>The GNU C++ Library Documentation</title><meta name="generator" content="DocBook XSL Stylesheets V1.74.3" /><link rel="home" href="spine.html" title="The GNU C++ Library Documentation" /><link rel="next" href="manual/spine.html" title="The GNU C++ Library" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">The GNU C++ Library Documentation</th></tr><tr><td width="20%" align="left"> </td><th width="60%" align="center"> </th><td width="20%" align="right"> <a accesskey="n" href="manual/spine.html">Next</a></td></tr></table><hr /></div><div class="set" lang="en" xml:lang="en"><div class="titlepage"><div><div><h1 class="title"><a id="set-index"></a>The GNU C++ Library Documentation</h1></div><div><div class="authorgroup"><div class="author"><h3 class="author"><span class="firstname"></span> <span class="surname"></span></h3></div><div class="author"><h3 class="author"><span class="firstname">Paolo</span> <span class="surname">Carlini</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Phil</span> <span class="surname">Edwards</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Doug</span> <span class="surname">Gregor</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Benjamin</span> <span class="surname">Kosnik</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Dhruv</span> <span class="surname">Matani</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Jason</span> <span class="surname">Merrill</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Mark</span> <span class="surname">Mitchell</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Nathan</span> <span class="surname">Myers</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Felix</span> <span class="surname">Natter</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Stefan</span> <span class="surname">Olsson</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Silvius</span> <span class="surname">Rus</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Johannes</span> <span class="surname">Singler</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Ami</span> <span class="surname">Tavory</span></h3></div><div class="author"><h3 class="author"><span class="firstname">Jonathan</span> <span class="surname">Wakely</span></h3></div></div></div><div><p class="copyright">Copyright © 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009 
       <a class="ulink" href="http://www.fsf.org" target="_top">FSF</a>
     </p></div></div><hr /></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="book"><a href="manual/spine.html">The GNU C++ Library</a></span></dt><dd><dl><dt><span class="part"><a href="manual/intro.html">I. 
   Introduction
   
-</a></span></dt><dd><dl><dt><span class="chapter"><a href="manual/status.html">1. Status</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/status.html#manual.intro.status.iso">Implementation Status</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/status.html#status.iso.1998">C++ 1998/2003</a></span></dt><dt><span class="sect2"><a href="manual/status.html#status.iso.tr1">C++ TR1</a></span></dt><dt><span class="sect2"><a href="manual/status.html#status.iso.200x">C++ 200x</a></span></dt><dt><span class="sect2"><a href="manual/status.html#status.iso.tr24733">C++ TR 24733</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/license.html">License</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/license.html#manual.intro.status.license.gpl">The Code: GPL</a></span></dt><dt><span class="sect2"><a href="manual/license.html#manual.intro.status.license.fdl">The Documentation: GPL, FDL</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/bugs.html">Bugs</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/bugs.html#manual.intro.status.bugs.impl">Implementation Bugs</a></span></dt><dt><span class="sect2"><a href="manual/bugs.html#manual.intro.status.bugs.iso">Standard Bugs</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="manual/setup.html">2. Setup</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/setup.html#manual.intro.setup.prereq">Prerequisites</a></span></dt><dt><span class="sect1"><a href="manual/configure.html">Configure</a></span></dt><dt><span class="sect1"><a href="manual/make.html">Make</a></span></dt><dt><span class="sect1"><a href="manual/test.html">Test</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/test.html#test.organization">Organization</a></span></dt><dt><span class="sect2"><a href="manual/test.html#test.run">Running the Testsuite</a></span></dt><dt><span class="sect2"><a href="manual/test.html#test.new_tests">Writing a new test case</a></span></dt><dt><span class="sect2"><a href="manual/test.html#test.harness">Test Harness and Utilities</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="manual/using.html">3. Using</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/using.html#manual.intro.using.lib">Linking Library Binary Files</a></span></dt><dt><span class="sect1"><a href="manual/using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="sect2"><a href="manual/using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="sect2"><a href="manual/using_headers.html#manual.intro.using.headers.cheaders">The C Headers and namespace std</a></span></dt><dt><span class="sect2"><a href="manual/using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="sect2"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="sect2"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/using_macros.html">Macros</a></span></dt><dt><span class="sect1"><a href="manual/using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="sect2"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="sect2"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="sect2"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dt><span class="sect2"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/using_exceptions.html#intro.using.exception.propagating">Propagating Exceptions aka Exception Neutrality</a></span></dt><dt><span class="sect2"><a href="manual/using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="sect2"><a href="manual/using_exceptions.html#intro.using.exception.no">Support for -fno-exceptions</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/debug.html#debug.compiler">Using g++</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.gdb">Using gdb</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.profile_mode">Profile-based Performance Analysis</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="part"><a href="manual/support.html">II. 
+</a></span></dt><dd><dl><dt><span class="chapter"><a href="manual/status.html">1. Status</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/status.html#manual.intro.status.iso">Implementation Status</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/status.html#status.iso.1998">C++ 1998/2003</a></span></dt><dt><span class="sect2"><a href="manual/status.html#status.iso.tr1">C++ TR1</a></span></dt><dt><span class="sect2"><a href="manual/status.html#status.iso.200x">C++ 200x</a></span></dt><dt><span class="sect2"><a href="manual/status.html#status.iso.tr24733">C++ TR 24733</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/license.html">License</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/license.html#manual.intro.status.license.gpl">The Code: GPL</a></span></dt><dt><span class="sect2"><a href="manual/license.html#manual.intro.status.license.fdl">The Documentation: GPL, FDL</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/bugs.html">Bugs</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/bugs.html#manual.intro.status.bugs.impl">Implementation Bugs</a></span></dt><dt><span class="sect2"><a href="manual/bugs.html#manual.intro.status.bugs.iso">Standard Bugs</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="manual/setup.html">2. Setup</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/setup.html#manual.intro.setup.prereq">Prerequisites</a></span></dt><dt><span class="sect1"><a href="manual/configure.html">Configure</a></span></dt><dt><span class="sect1"><a href="manual/make.html">Make</a></span></dt></dl></dd><dt><span class="chapter"><a href="manual/using.html">3. Using</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/using.html#manual.intro.using.lib">Linking Library Binary Files</a></span></dt><dt><span class="sect1"><a href="manual/using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="sect2"><a href="manual/using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="sect2"><a href="manual/using_headers.html#manual.intro.using.headers.cheaders">The C Headers and namespace std</a></span></dt><dt><span class="sect2"><a href="manual/using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="sect2"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="sect2"><a href="manual/using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/using_macros.html">Macros</a></span></dt><dt><span class="sect1"><a href="manual/using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="sect2"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="sect2"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="sect2"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dt><span class="sect2"><a href="manual/using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="sect2"><a href="manual/using_exceptions.html#intro.using.exception.propagating">Exception Neutrality</a></span></dt><dt><span class="sect2"><a href="manual/using_exceptions.html#intro.using.exception.no">Doing without</a></span></dt><dt><span class="sect2"><a href="manual/using_exceptions.html#intro.using.exception.compat">Compatibility</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/debug.html#debug.compiler">Using g++</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.gdb">Using gdb</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt><dt><span class="sect2"><a href="manual/debug.html#debug.profile_mode">Profile-based Performance Analysis</a></span></dt></dl></dd></dl></dd></dl></dd><dt><span class="part"><a href="manual/support.html">II. 
   Support
   
 </a></span></dt><dd><dl><dt><span class="preface"><a href="manual/bk01pt02pr01.html"></a></span></dt><dt><span class="chapter"><a href="manual/fundamental_types.html">4. Types</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/fundamental_types.html#manual.support.types.fundamental">Fundamental Types</a></span></dt><dt><span class="sect1"><a href="manual/bk01pt02ch04s02.html">Numeric Properties</a></span></dt><dt><span class="sect1"><a href="manual/bk01pt02ch04s03.html">NULL</a></span></dt></dl></dd><dt><span class="chapter"><a href="manual/dynamic_memory.html">5. Dynamic Memory</a></span></dt><dt><span class="chapter"><a href="manual/termination.html">6. Termination</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/termination.html#support.termination.handlers">Termination Handlers</a></span></dt><dt><span class="sect1"><a href="manual/verbose_termination.html">Verbose Terminate Handler</a></span></dt></dl></dd></dl></dd><dt><span class="part"><a href="manual/diagnostics.html">III. 
   Diagnostics
   
-</a></span></dt><dd><dl><dt><span class="chapter"><a href="manual/exceptions.html">7. Exceptions</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/exceptions.html#manual.diagnostics.exceptions.hierarchy">Exception Classes</a></span></dt><dt><span class="sect1"><a href="manual/bk01pt03ch07s02.html">Adding Data to Exceptions</a></span></dt><dt><span class="sect1"><a href="manual/bk01pt03ch07s03.html">Cancellation</a></span></dt></dl></dd><dt><span class="chapter"><a href="manual/bk01pt03ch08.html">8. Concept Checking</a></span></dt></dl></dd><dt><span class="part"><a href="manual/utilities.html">IV. 
+</a></span></dt><dd><dl><dt><span class="chapter"><a href="manual/exceptions.html">7. Exceptions</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/exceptions.html#manual.diagnostics.exceptions.hierarchy">Exception Classes</a></span></dt><dt><span class="sect1"><a href="manual/bk01pt03ch07s02.html">Adding Data to Exceptions</a></span></dt></dl></dd><dt><span class="chapter"><a href="manual/bk01pt03ch08.html">8. Concept Checking</a></span></dt></dl></dd><dt><span class="part"><a href="manual/utilities.html">IV. 
   Utilities
   
 </a></span></dt><dd><dl><dt><span class="chapter"><a href="manual/functors.html">9. Functors</a></span></dt><dt><span class="chapter"><a href="manual/pairs.html">10. Pairs</a></span></dt><dt><span class="chapter"><a href="manual/memory.html">11. Memory</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/memory.html#manual.util.memory.allocator">Allocators</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/memory.html#allocator.req">Requirements</a></span></dt><dt><span class="sect2"><a href="manual/memory.html#allocator.design_issues">Design Issues</a></span></dt><dt><span class="sect2"><a href="manual/memory.html#allocator.impl">Implementation</a></span></dt><dt><span class="sect2"><a href="manual/memory.html#allocator.using">Using a Specific Allocator</a></span></dt><dt><span class="sect2"><a href="manual/memory.html#allocator.custom">Custom Allocators</a></span></dt><dt><span class="sect2"><a href="manual/memory.html#allocator.ext">Extension Allocators</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/auto_ptr.html">auto_ptr</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/auto_ptr.html#auto_ptr.limitations">Limitations</a></span></dt><dt><span class="sect2"><a href="manual/auto_ptr.html#auto_ptr.using">Use in Containers</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/shared_ptr.html">shared_ptr</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/shared_ptr.html#shared_ptr.req">Requirements</a></span></dt><dt><span class="sect2"><a href="manual/shared_ptr.html#shared_ptr.design_issues">Design Issues</a></span></dt><dt><span class="sect2"><a href="manual/shared_ptr.html#shared_ptr.impl">Implementation</a></span></dt><dt><span class="sect2"><a href="manual/shared_ptr.html#shared_ptr.using">Use</a></span></dt><dt><span class="sect2"><a href="manual/shared_ptr.html#shared_ptr.ack">Acknowledgments</a></span></dt></dl></dd></dl></dd><dt><span class="chapter"><a href="manual/traits.html">12. Traits</a></span></dt></dl></dd><dt><span class="part"><a href="manual/strings.html">V. 
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 </a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/appendix_contributing.html#contrib.list">Contributor Checklist</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/appendix_contributing.html#list.reading">Reading</a></span></dt><dt><span class="sect2"><a href="manual/appendix_contributing.html#list.copyright">Assignment</a></span></dt><dt><span class="sect2"><a href="manual/appendix_contributing.html#list.getting">Getting Sources</a></span></dt><dt><span class="sect2"><a href="manual/appendix_contributing.html#list.patches">Submitting Patches</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/source_organization.html">Directory Layout and Source Conventions</a></span></dt><dt><span class="sect1"><a href="manual/source_code_style.html">Coding Style</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/source_code_style.html#coding_style.bad_identifiers">Bad Identifiers</a></span></dt><dt><span class="sect2"><a href="manual/source_code_style.html#coding_style.example">By Example</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/documentation_style.html">Documentation Style</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/documentation_style.html#doc_style.doxygen">Doxygen</a></span></dt><dt><span class="sect2"><a href="manual/documentation_style.html#doc_style.docbook">Docbook</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/source_design_notes.html">Design Notes</a></span></dt></dl></dd><dt><span class="appendix"><a href="manual/appendix_porting.html">B. 
   Porting and Maintenance
   
-</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/appendix_porting.html#appendix.porting.build_hacking">Configure and Build Hacking</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.prereq">Prerequisites</a></span></dt><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.map">Overview: What Comes from Where</a></span></dt><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.scripts">Storing Information in non-AC files (like configure.host)</a></span></dt><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.conventions">Coding and Commenting Conventions</a></span></dt><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.acinclude">The acinclude.m4 layout</a></span></dt><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.enable">GLIBCXX_ENABLE, the --enable maker</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/internals.html">Porting to New Hardware or Operating Systems</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/internals.html#internals.os">Operating System</a></span></dt><dt><span class="sect2"><a href="manual/internals.html#internals.cpu">CPU</a></span></dt><dt><span class="sect2"><a href="manual/internals.html#internals.char_types">Character Types</a></span></dt><dt><span class="sect2"><a href="manual/internals.html#internals.thread_safety">Thread Safety</a></span></dt><dt><span class="sect2"><a href="manual/internals.html#internals.numeric_limits">Numeric Limits</a></span></dt><dt><span class="sect2"><a href="manual/internals.html#internals.libtool">Libtool</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.versioning">Versioning</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.impl">Implementation</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.testing">Testing</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/api.html#api.rel_300">3.0</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_310">3.1</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_320">3.2</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_330">3.3</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_340">3.4</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_400">4.0</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_410">4.1</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_420">4.2</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_430">4.3</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/backwards.html#backwards.first">First</a></span></dt><dt><span class="sect2"><a href="manual/backwards.html#backwards.second">Second</a></span></dt><dt><span class="sect2"><a href="manual/backwards.html#backwards.third">Third</a></span></dt></dl></dd></dl></dd><dt><span class="appendix"><a href="manual/appendix_free.html">C. 
+</a></span></dt><dd><dl><dt><span class="sect1"><a href="manual/appendix_porting.html#appendix.porting.build_hacking">Configure and Build Hacking</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.prereq">Prerequisites</a></span></dt><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.map">Overview: What Comes from Where</a></span></dt><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.scripts">Storing Information in non-AC files (like configure.host)</a></span></dt><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.conventions">Coding and Commenting Conventions</a></span></dt><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.acinclude">The acinclude.m4 layout</a></span></dt><dt><span class="sect2"><a href="manual/appendix_porting.html#build_hacking.enable">GLIBCXX_ENABLE, the --enable maker</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/internals.html">Porting to New Hardware or Operating Systems</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/internals.html#internals.os">Operating System</a></span></dt><dt><span class="sect2"><a href="manual/internals.html#internals.cpu">CPU</a></span></dt><dt><span class="sect2"><a href="manual/internals.html#internals.char_types">Character Types</a></span></dt><dt><span class="sect2"><a href="manual/internals.html#internals.thread_safety">Thread Safety</a></span></dt><dt><span class="sect2"><a href="manual/internals.html#internals.numeric_limits">Numeric Limits</a></span></dt><dt><span class="sect2"><a href="manual/internals.html#internals.libtool">Libtool</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/test.html">Test</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/test.html#test.organization">Organization</a></span></dt><dt><span class="sect2"><a href="manual/test.html#test.run">Running the Testsuite</a></span></dt><dt><span class="sect2"><a href="manual/test.html#test.new_tests">Writing a new test case</a></span></dt><dt><span class="sect2"><a href="manual/test.html#test.harness">Test Harness and Utilities</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/abi.html">ABI Policy and Guidelines</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/abi.html#abi.cxx_interface">The C++ Interface</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.versioning">Versioning</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.changes_allowed">Allowed Changes</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.changes_no">Prohibited Changes</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.impl">Implementation</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.testing">Testing</a></span></dt><dt><span class="sect2"><a href="manual/abi.html#abi.issues">Outstanding Issues</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/api.html">API Evolution and Deprecation History</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/api.html#api.rel_300">3.0</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_310">3.1</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_320">3.2</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_330">3.3</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_340">3.4</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_400">4.0</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_410">4.1</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_420">4.2</a></span></dt><dt><span class="sect2"><a href="manual/api.html#api.rel_430">4.3</a></span></dt></dl></dd><dt><span class="sect1"><a href="manual/backwards.html">Backwards Compatibility</a></span></dt><dd><dl><dt><span class="sect2"><a href="manual/backwards.html#backwards.first">First</a></span></dt><dt><span class="sect2"><a href="manual/backwards.html#backwards.second">Second</a></span></dt><dt><span class="sect2"><a href="manual/backwards.html#backwards.third">Third</a></span></dt></dl></dd></dl></dd><dt><span class="appendix"><a href="manual/appendix_free.html">C. 
   Free Software Needs Free Documentation
   
 </a></span></dt><dt><span class="appendix"><a href="manual/appendix_gpl.html">D.