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99 lines
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<?xml version="1.0" encoding="UTF-8" standalone="no"?>
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<!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>Directory Layout and Source Conventions</title><meta name="generator" content="DocBook XSL-NS Stylesheets V1.78.1" /><meta name="keywords" content="ISO C++, library" /><meta name="keywords" content="ISO C++, runtime, library" /><link rel="home" href="../index.html" title="The GNU C++ Library" /><link rel="up" href="appendix_contributing.html" title="Appendix A. Contributing" /><link rel="prev" href="appendix_contributing.html" title="Appendix A. Contributing" /><link rel="next" href="source_code_style.html" title="Coding Style" /></head><body><div class="navheader"><table width="100%" summary="Navigation header"><tr><th colspan="3" align="center">Directory Layout and Source Conventions</th></tr><tr><td width="20%" align="left"><a accesskey="p" href="appendix_contributing.html">Prev</a> </td><th width="60%" align="center">Appendix A.
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Contributing
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</th><td width="20%" align="right"> <a accesskey="n" href="source_code_style.html">Next</a></td></tr></table><hr /></div><div class="section"><div class="titlepage"><div><div><h2 class="title" style="clear: both"><a id="contrib.organization"></a>Directory Layout and Source Conventions</h2></div></div></div><p>
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The <code class="filename">libstdc++-v3</code> directory in the
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GCC sources contains the files needed to create the GNU C++ Library.
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</p><p>
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It has subdirectories:
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</p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="filename">doc</code></span></dt><dd>
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Files in HTML and text format that document usage, quirks of the
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implementation, and contributor checklists.
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</dd><dt><span class="term"><code class="filename">include</code></span></dt><dd>
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All header files for the C++ library are within this directory,
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modulo specific runtime-related files that are in the libsupc++
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directory.
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<div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="filename">include/std</code></span></dt><dd>
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Files meant to be found by <code class="code">#include <name></code> directives
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in standard-conforming user programs.
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</dd><dt><span class="term"><code class="filename">include/c</code></span></dt><dd>
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Headers intended to directly include standard C headers.
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[NB: this can be enabled via <code class="option">--enable-cheaders=c</code>]
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</dd><dt><span class="term"><code class="filename">include/c_global</code></span></dt><dd>
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Headers intended to include standard C headers in
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the global namespace, and put select names into the <code class="code">std::</code>
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namespace. [NB: this is the default, and is the same as
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<code class="option">--enable-cheaders=c_global</code>]
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</dd><dt><span class="term"><code class="filename">include/c_std</code></span></dt><dd>
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Headers intended to include standard C headers
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already in namespace std, and put select names into the <code class="code">std::</code>
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namespace. [NB: this is the same as
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<code class="option">--enable-cheaders=c_std</code>]
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</dd><dt><span class="term"><code class="filename">include/bits</code></span></dt><dd>
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Files included by standard headers and by other files in
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the bits directory.
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</dd><dt><span class="term"><code class="filename">include/backward</code></span></dt><dd>
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Headers provided for backward compatibility, such as
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<code class="filename"><backward/hash_map></code>.
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They are not used in this library.
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</dd><dt><span class="term"><code class="filename">include/ext</code></span></dt><dd>
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Headers that define extensions to the standard library. No
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standard header refers to any of them, in theory (there are some
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exceptions).
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</dd></dl></div></dd><dt><span class="term"><code class="filename">scripts</code></span></dt><dd>
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Scripts that are used during the configure, build, make, or test
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process.
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</dd><dt><span class="term"><code class="filename">src</code></span></dt><dd>
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Files that are used in constructing the library, but are not
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installed.
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<div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="filename">src/c++98</code></span></dt><dd>
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Source files compiled using <code class="option">-std=gnu++98</code>.
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</dd><dt><span class="term"><code class="filename">src/c++11</code></span></dt><dd>
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Source files compiled using <code class="option">-std=gnu++11</code>.
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</dd><dt><span class="term"><code class="filename">src/filesystem</code></span></dt><dd>
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Source files for the Filesystem TS.
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</dd><dt><span class="term"><code class="filename">src/shared</code></span></dt><dd>
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Source code included by other files under both
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<code class="filename">src/c++98</code> and
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<code class="filename">src/c++11</code></dd></dl></div></dd><dt><span class="term"><code class="filename">testsuites/[backward, demangle, ext, performance, thread, 17_* to 30_*]</code></span></dt><dd>
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Test programs are here, and may be used to begin to exercise the
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library. Support for "make check" and "make check-install" is
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complete, and runs through all the subdirectories here when this
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command is issued from the build directory. Please note that
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"make check" requires DejaGNU 1.4 or later to be installed.
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</dd></dl></div><p>
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Other subdirectories contain variant versions of certain files
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that are meant to be copied or linked by the configure script.
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Currently these are:
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</p><div class="literallayout"><p><code class="filename">config/abi</code><br />
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<code class="filename">config/allocator</code><br />
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<code class="filename">config/cpu</code><br />
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<code class="filename">config/io</code><br />
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<code class="filename">config/locale</code><br />
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<code class="filename">config/os</code><br />
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</p></div><p>
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</p><p>
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In addition, a subdirectory holds the convenience library libsupc++.
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</p><div class="variablelist"><dl class="variablelist"><dt><span class="term"><code class="filename">libsupc++</code></span></dt><dd>
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Contains the runtime library for C++, including exception
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handling and memory allocation and deallocation, RTTI, terminate
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handlers, etc.
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</dd></dl></div><p>
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Note that glibc also has a <code class="filename">bits/</code>
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subdirectory. We need to be careful not to collide with names in its
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<code class="filename">bits/</code> directory. For example
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<code class="filename"><bits/std_mutex.h></code> has to be
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renamed from <code class="filename"><bits/mutex.h></code>.
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Another solution would be to rename <code class="filename">bits</code>
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to (e.g.) <code class="filename">cppbits</code>.
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</p><p>
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In files throughout the system, lines marked with an "XXX" indicate
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a bug or incompletely-implemented feature. Lines marked "XXX MT"
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indicate a place that may require attention for multi-thread safety.
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</p></div><div class="navfooter"><hr /><table width="100%" summary="Navigation footer"><tr><td width="40%" align="left"><a accesskey="p" href="appendix_contributing.html">Prev</a> </td><td width="20%" align="center"><a accesskey="u" href="appendix_contributing.html">Up</a></td><td width="40%" align="right"> <a accesskey="n" href="source_code_style.html">Next</a></td></tr><tr><td width="40%" align="left" valign="top">Appendix A.
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Contributing
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</td><td width="20%" align="center"><a accesskey="h" href="../index.html">Home</a></td><td width="40%" align="right" valign="top"> Coding Style</td></tr></table></div></body></html> |