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101 lines
4.4 KiB
HTML
101 lines
4.4 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>System Config (GNU Compiler Collection (GCC) Internals)</title>
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<meta name="description" content="System Config (GNU Compiler Collection (GCC) Internals)">
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<meta name="keywords" content="System Config (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="Configuration.html#Configuration" rel="up" title="Configuration">
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<link href="Configuration-Files.html#Configuration-Files" rel="next" title="Configuration Files">
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<link href="Config-Fragments.html#Config-Fragments" rel="prev" title="Config Fragments">
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<style type="text/css">
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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="System-Config"></a>
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<div class="header">
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<p>
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Next: <a href="Configuration-Files.html#Configuration-Files" accesskey="n" rel="next">Configuration Files</a>, Previous: <a href="Config-Fragments.html#Config-Fragments" accesskey="p" rel="prev">Config Fragments</a>, Up: <a href="Configuration.html#Configuration" accesskey="u" rel="up">Configuration</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="The-config_002ebuild_003b-config_002ehost_003b-and-config_002egcc-Files"></a>
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<h4 class="subsubsection">6.3.2.2 The <samp>config.build</samp>; <samp>config.host</samp>; and <samp>config.gcc</samp> Files</h4>
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<p>The <samp>config.build</samp> file contains specific rules for particular systems
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which GCC is built on. This should be used as rarely as possible, as the
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behavior of the build system can always be detected by autoconf.
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</p>
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<p>The <samp>config.host</samp> file contains specific rules for particular systems
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which GCC will run on. This is rarely needed.
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</p>
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<p>The <samp>config.gcc</samp> file contains specific rules for particular systems
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which GCC will generate code for. This is usually needed.
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</p>
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<p>Each file has a list of the shell variables it sets, with descriptions, at the
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top of the file.
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</p>
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<p>FIXME: document the contents of these files, and what variables should
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be set to control build, host and target configuration.
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</p>
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</body>
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</html>
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