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221 lines
8.3 KiB
HTML
221 lines
8.3 KiB
HTML
4 years ago
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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
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<html>
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<!-- Copyright (C) 1988-2018 Free Software Foundation, Inc.
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Permission is granted to copy, distribute and/or modify this document
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under the terms of the GNU Free Documentation License, Version 1.3 or
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any later version published by the Free Software Foundation; with the
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Invariant Sections being "Funding Free Software", the Front-Cover
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Texts being (a) (see below), and with the Back-Cover Texts being (b)
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(see below). A copy of the license is included in the section entitled
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"GNU Free Documentation License".
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(a) The FSF's Front-Cover Text is:
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A GNU Manual
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(b) The FSF's Back-Cover Text is:
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You have freedom to copy and modify this GNU Manual, like GNU
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software. Copies published by the Free Software Foundation raise
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funds for GNU development. -->
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<!-- Created by GNU Texinfo 6.4, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>Top Level (GNU Compiler Collection (GCC) Internals)</title>
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<meta name="description" content="Top Level (GNU Compiler Collection (GCC) Internals)">
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<meta name="keywords" content="Top Level (GNU Compiler Collection (GCC) Internals)">
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<meta name="resource-type" content="document">
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<meta name="distribution" content="global">
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<meta name="Generator" content="makeinfo">
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<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
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<link href="index.html#Top" rel="start" title="Top">
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<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Source-Tree.html#Source-Tree" rel="up" title="Source Tree">
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<link href="gcc-Directory.html#gcc-Directory" rel="next" title="gcc Directory">
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<link href="Configure-Terms.html#Configure-Terms" rel="prev" title="Configure Terms">
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<style type="text/css">
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<!--
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ul.no-bullet {list-style: none}
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-->
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</style>
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</head>
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<body lang="en">
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<a name="Top-Level"></a>
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<div class="header">
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<p>
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Next: <a href="gcc-Directory.html#gcc-Directory" accesskey="n" rel="next">gcc Directory</a>, Previous: <a href="Configure-Terms.html#Configure-Terms" accesskey="p" rel="prev">Configure Terms</a>, Up: <a href="Source-Tree.html#Source-Tree" accesskey="u" rel="up">Source Tree</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="Top-Level-Source-Directory"></a>
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<h3 class="section">6.2 Top Level Source Directory</h3>
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<p>The top level source directory in a GCC distribution contains several
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files and directories that are shared with other software
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distributions such as that of GNU Binutils. It also contains several
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subdirectories that contain parts of GCC and its runtime libraries:
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</p>
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<dl compact="compact">
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<dt><samp>boehm-gc</samp></dt>
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<dd><p>The Boehm conservative garbage collector, optionally used as part of
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the ObjC runtime library when configured with <samp>--enable-objc-gc</samp>.
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</p>
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</dd>
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<dt><samp>config</samp></dt>
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<dd><p>Autoconf macros and Makefile fragments used throughout the tree.
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</p>
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</dd>
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<dt><samp>contrib</samp></dt>
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<dd><p>Contributed scripts that may be found useful in conjunction with GCC.
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One of these, <samp>contrib/texi2pod.pl</samp>, is used to generate man
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pages from Texinfo manuals as part of the GCC build process.
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</p>
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</dd>
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<dt><samp>fixincludes</samp></dt>
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<dd><p>The support for fixing system headers to work with GCC. See
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<samp>fixincludes/README</samp> for more information. The headers fixed by
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this mechanism are installed in <samp><var>libsubdir</var>/include-fixed</samp>.
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Along with those headers, <samp>README-fixinc</samp> is also installed, as
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<samp><var>libsubdir</var>/include-fixed/README</samp>.
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</p>
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</dd>
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<dt><samp>gcc</samp></dt>
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<dd><p>The main sources of GCC itself (except for runtime libraries),
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including optimizers, support for different target architectures,
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language front ends, and testsuites. See <a href="gcc-Directory.html#gcc-Directory">The
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<samp>gcc</samp> Subdirectory</a>, for details.
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</p>
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</dd>
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<dt><samp>gnattools</samp></dt>
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<dd><p>Support tools for GNAT.
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</p>
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</dd>
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<dt><samp>include</samp></dt>
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<dd><p>Headers for the <code>libiberty</code> library.
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</p>
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</dd>
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<dt><samp>intl</samp></dt>
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<dd><p>GNU <code>libintl</code>, from GNU <code>gettext</code>, for systems which do not
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include it in <code>libc</code>.
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</p>
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</dd>
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<dt><samp>libada</samp></dt>
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<dd><p>The Ada runtime library.
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</p>
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</dd>
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<dt><samp>libatomic</samp></dt>
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<dd><p>The runtime support library for atomic operations (e.g. for <code>__sync</code>
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and <code>__atomic</code>).
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</p>
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</dd>
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<dt><samp>libcpp</samp></dt>
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<dd><p>The C preprocessor library.
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</p>
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</dd>
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<dt><samp>libdecnumber</samp></dt>
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<dd><p>The Decimal Float support library.
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</p>
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</dd>
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<dt><samp>libffi</samp></dt>
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<dd><p>The <code>libffi</code> library, used as part of the Go runtime library.
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</p>
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</dd>
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<dt><samp>libgcc</samp></dt>
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<dd><p>The GCC runtime library.
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</p>
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</dd>
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<dt><samp>libgfortran</samp></dt>
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<dd><p>The Fortran runtime library.
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</p>
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</dd>
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<dt><samp>libgo</samp></dt>
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<dd><p>The Go runtime library. The bulk of this library is mirrored from the
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<a href="https://github.com/golang/go">master Go repository</a>.
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</p>
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</dd>
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<dt><samp>libgomp</samp></dt>
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<dd><p>The GNU Offloading and Multi Processing Runtime Library.
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</p>
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</dd>
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<dt><samp>libiberty</samp></dt>
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<dd><p>The <code>libiberty</code> library, used for portability and for some
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generally useful data structures and algorithms. See <a href="http://gcc.gnu.org/onlinedocs/libiberty/index.html#Top">Introduction</a> in <cite><small>GNU</small> libiberty</cite>, for more information
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about this library.
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</p>
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</dd>
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<dt><samp>libitm</samp></dt>
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<dd><p>The runtime support library for transactional memory.
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</p>
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</dd>
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<dt><samp>libobjc</samp></dt>
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<dd><p>The Objective-C and Objective-C++ runtime library.
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</p>
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</dd>
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<dt><samp>libquadmath</samp></dt>
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<dd><p>The runtime support library for quad-precision math operations.
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</p>
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</dd>
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<dt><samp>libssp</samp></dt>
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<dd><p>The Stack protector runtime library.
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</p>
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</dd>
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<dt><samp>libstdc++-v3</samp></dt>
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<dd><p>The C++ runtime library.
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</p>
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</dd>
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<dt><samp>lto-plugin</samp></dt>
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<dd><p>Plugin used by the linker if link-time optimizations are enabled.
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</p>
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</dd>
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<dt><samp>maintainer-scripts</samp></dt>
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<dd><p>Scripts used by the <code>gccadmin</code> account on <code>gcc.gnu.org</code>.
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</p>
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</dd>
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<dt><samp>zlib</samp></dt>
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<dd><p>The <code>zlib</code> compression library, used for compressing and
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uncompressing GCC’s intermediate language in LTO object files.
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</p></dd>
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</dl>
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<p>The build system in the top level directory, including how recursion
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into subdirectories works and how building runtime libraries for
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multilibs is handled, is documented in a separate manual, included
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with GNU Binutils. See <a href="../configure/index.html#Top">GNU configure and build system</a> in <cite>The GNU configure and build system</cite>, for details.
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</p>
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<hr>
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<div class="header">
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<p>
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Next: <a href="gcc-Directory.html#gcc-Directory" accesskey="n" rel="next">gcc Directory</a>, Previous: <a href="Configure-Terms.html#Configure-Terms" accesskey="p" rel="prev">Configure Terms</a>, Up: <a href="Source-Tree.html#Source-Tree" accesskey="u" rel="up">Source Tree</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Option-Index.html#Option-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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</body>
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</html>
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