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<?xml version="1.0" encoding="UTF-8" standalone="no"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8" /><title>Chapter 3. Using</title><meta name="generator" content="DocBook XSL Stylesheets V1.75.2" /><meta name="keywords" content=" ISO C++ , library " /><link rel="home" href="../spine.html" title="The GNU C++ Library Documentation" /><link rel="up" href="intro.html" title="Part I. Introduction" /><link rel="prev" href="make.html" title="Make" /><link rel="next" href="using_headers.html" title="Headers" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Chapter 3. Using</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="make.html">Prev</a> </td><th width="60%" align="center">Part I. Introduction </th><td width="20%" align="right"> <a accesskey="n" href="using_headers.html">Next</a></td></tr></table><hr /></div><div class="chapter" title="Chapter 3. Using"><div class="titlepage"><div><div><h2 class="title"><a id="manual.intro.using"></a>Chapter 3. Using</h2></div></div></div><div class="toc"><p><b>Table of Contents</b></p><dl><dt><span class="sect1"><a href="using.html#manual.intro.using.flags">Command Options</a></span></dt><dt><span class="sect1"><a href="using_headers.html">Headers</a></span></dt><dd><dl><dt><span class="sect2"><a href="using_headers.html#manual.intro.using.headers.all">Header Files</a></span></dt><dt><span class="sect2"><a href="using_headers.html#manual.intro.using.headers.mixing">Mixing Headers</a></span></dt><dt><span class="sect2"><a href="using_headers.html#manual.intro.using.headers.cheaders">The C Headers and <code class="code">namespace std</code></a></span></dt><dt><span class="sect2"><a href="using_headers.html#manual.intro.using.headers.pre">Precompiled Headers</a></span></dt></dl></dd><dt><span class="sect1"><a href="using_macros.html">Macros</a></span></dt><dt><span class="sect1"><a href="using_namespaces.html">Namespaces</a></span></dt><dd><dl><dt><span class="sect2"><a href="using_namespaces.html#manual.intro.using.namespaces.all">Available Namespaces</a></span></dt><dt><span class="sect2"><a href="using_namespaces.html#manual.intro.using.namespaces.std">namespace std</a></span></dt><dt><span class="sect2"><a href="using_namespaces.html#manual.intro.using.namespaces.comp">Using Namespace Composition</a></span></dt></dl></dd><dt><span class="sect1"><a href="using_dynamic_or_shared.html">Linking</a></span></dt><dd><dl><dt><span class="sect2"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.freestanding">Almost Nothing</a></span></dt><dt><span class="sect2"><a href="using_dynamic_or_shared.html#manual.intro.using.linkage.dynamic">Finding Dynamic or Shared Libraries</a></span></dt></dl></dd><dt><span class="sect1"><a href="using_concurrency.html">Concurrency</a></span></dt><dd><dl><dt><span class="sect2"><a href="using_concurrency.html#manual.intro.using.concurrency.prereq">Prerequisites</a></span></dt><dt><span class="sect2"><a href="using_concurrency.html#manual.intro.using.concurrency.thread_safety">Thread Safety</a></span></dt><dt><span class="sect2"><a href="using_concurrency.html#manual.intro.using.concurrency.atomics">Atomics</a></span></dt><dt><span class="sect2"><a href="using_concurrency.html#manual.intro.using.concurrency.io">IO</a></span></dt><dt><span class="sect2"><a href="using_concurrency.html#manual.intro.using.concurrency.containers">Containers</a></span></dt></dl></dd><dt><span class="sect1"><a href="using_exceptions.html">Exceptions</a></span></dt><dd><dl><dt><span class="sect2"><a href="using_exceptions.html#intro.using.exception.safety">Exception Safety</a></span></dt><dt><span class="sect2"><a href="using_exceptions.html#intro.using.exception.propagating">Exception Neutrality</a></span></dt><dt><span class="sect2"><a href="using_exceptions.html#intro.using.exception.no">Doing without</a></span></dt><dt><span class="sect2"><a href="using_exceptions.html#intro.using.exception.compat">Compatibility</a></span></dt></dl></dd><dt><span class="sect1"><a href="debug.html">Debugging Support</a></span></dt><dd><dl><dt><span class="sect2"><a href="debug.html#debug.compiler">Using <span class="command"><strong>g++</strong></span></a></span></dt><dt><span class="sect2"><a href="debug.html#debug.req">Debug Versions of Library Binary Files</a></span></dt><dt><span class="sect2"><a href="debug.html#debug.memory">Memory Leak Hunting</a></span></dt><dt><span class="sect2"><a href="debug.html#debug.gdb">Using <span class="command"><strong>gdb</strong></span></a></span></dt><dt><span class="sect2"><a href="debug.html#debug.exceptions">Tracking uncaught exceptions</a></span></dt><dt><span class="sect2"><a href="debug.html#debug.debug_mode">Debug Mode</a></span></dt><dt><span class="sect2"><a href="debug.html#debug.compile_time_checks">Compile Time Checking</a></span></dt><dt><span class="sect2"><a href="debug.html#debug.profile_mode">Profile-based Performance Analysis</a></span></dt></dl></dd></dl></div><div class="sect1" title="Command Options"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="manual.intro.using.flags"></a>Command Options</h2></div></div></div><p> The set of features available in the GNU C++ library is shaped by several <a class="ulink" href="http://gcc.gnu.org/onlinedocs/gcc-4.3.2//gcc/Invoking-GCC.html" target="_top">GCC Command Options</a>. Options that impact libstdc++ are enumerated and detailed in the table below. </p><p> By default, <span class="command"><strong>g++</strong></span> is equivalent to <span class="command"><strong>g++ -std=gnu++98</strong></span>. The standard library also defaults to this dialect. </p><div class="table"><a id="id619494"></a><p class="title"><b>Table 3.1. C++ Command Options</b></p><div class="table-contents"><table summary="C++ Command Options" border="1"><colgroup><col align="left" /><col align="left" /></colgroup><thead><tr><th align="left">Option Flags</th><th align="left">Description</th></tr></thead><tbody><tr><td align="left"><code class="literal">-std=c++98</code></td><td align="left">Use the 1998 ISO C++ standard plus amendments.</td></tr><tr><td align="left"><code class="literal">-std=gnu++98</code></td><td align="left">As directly above, with GNU extensions.</td></tr><tr><td align="left"><code class="literal">-std=c++0x</code></td><td align="left">Use the working draft of the upcoming ISO C++0x standard.</td></tr><tr><td align="left"><code class="literal">-std=gnu++0x</code></td><td align="left">As directly above, with GNU extensions.</td></tr><tr><td align="left"><code class="literal">-fexceptions</code></td><td align="left">See <a class="link" href="using_exceptions.html#intro.using.exception.no" title="Doing without">exception-free dialect</a></td></tr><tr><td align="left"><code class="literal">-frtti</code></td><td align="left">As above, but RTTI-free dialect.</td></tr><tr><td align="left"><code class="literal">-pthread</code> or <code class="literal">-pthreads</code></td><td align="left">For ISO C++0x <thread>, <future>, <mutex>, or <condition_variable>.</td></tr><tr><td align="left"><code class="literal">-fopenmp</code></td><td align="left">For <a class="link" href="parallel_mode.html" title="Chapter 31. Parallel Mode">parallel</a> mode.</td></tr></tbody></table></div></div><br class="table-break" /></div></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="make.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="intro.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="using_headers.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Make </td><td width="20%" align="center"><a accesskey="h" href="../spine.html">Home</a></td><td width="40%" align="right" valign="top"> Headers</td></tr></table></div></body></html>