113 lines
5.2 KiB
HTML
113 lines
5.2 KiB
HTML
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
|
|
<html>
|
|
<!-- Copyright (C) 1988-2016 Free Software Foundation, Inc.
|
|
|
|
Permission is granted to copy, distribute and/or modify this document
|
|
under the terms of the GNU Free Documentation License, Version 1.3 or
|
|
any later version published by the Free Software Foundation; with the
|
|
Invariant Sections being "Funding Free Software", the Front-Cover
|
|
Texts being (a) (see below), and with the Back-Cover Texts being (b)
|
|
(see below). A copy of the license is included in the section entitled
|
|
"GNU Free Documentation License".
|
|
|
|
(a) The FSF's Front-Cover Text is:
|
|
|
|
A GNU Manual
|
|
|
|
(b) The FSF's Back-Cover Text is:
|
|
|
|
You have freedom to copy and modify this GNU Manual, like GNU
|
|
software. Copies published by the Free Software Foundation raise
|
|
funds for GNU development. -->
|
|
<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
|
|
<head>
|
|
<title>GNU Compiler Collection (GCC) Internals: Fragments</title>
|
|
|
|
<meta name="description" content="GNU Compiler Collection (GCC) Internals: Fragments">
|
|
<meta name="keywords" content="GNU Compiler Collection (GCC) Internals: Fragments">
|
|
<meta name="resource-type" content="document">
|
|
<meta name="distribution" content="global">
|
|
<meta name="Generator" content="makeinfo">
|
|
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
|
|
<link href="index.html#Top" rel="start" title="Top">
|
|
<link href="Option-Index.html#Option-Index" rel="index" title="Option Index">
|
|
<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
|
|
<link href="index.html#Top" rel="up" title="Top">
|
|
<link href="Target-Fragment.html#Target-Fragment" rel="next" title="Target Fragment">
|
|
<link href="Host-Misc.html#Host-Misc" rel="prev" title="Host Misc">
|
|
<style type="text/css">
|
|
<!--
|
|
a.summary-letter {text-decoration: none}
|
|
blockquote.smallquotation {font-size: smaller}
|
|
div.display {margin-left: 3.2em}
|
|
div.example {margin-left: 3.2em}
|
|
div.indentedblock {margin-left: 3.2em}
|
|
div.lisp {margin-left: 3.2em}
|
|
div.smalldisplay {margin-left: 3.2em}
|
|
div.smallexample {margin-left: 3.2em}
|
|
div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
|
|
div.smalllisp {margin-left: 3.2em}
|
|
kbd {font-style:oblique}
|
|
pre.display {font-family: inherit}
|
|
pre.format {font-family: inherit}
|
|
pre.menu-comment {font-family: serif}
|
|
pre.menu-preformatted {font-family: serif}
|
|
pre.smalldisplay {font-family: inherit; font-size: smaller}
|
|
pre.smallexample {font-size: smaller}
|
|
pre.smallformat {font-family: inherit; font-size: smaller}
|
|
pre.smalllisp {font-size: smaller}
|
|
span.nocodebreak {white-space:nowrap}
|
|
span.nolinebreak {white-space:nowrap}
|
|
span.roman {font-family:serif; font-weight:normal}
|
|
span.sansserif {font-family:sans-serif; font-weight:normal}
|
|
ul.no-bullet {list-style: none}
|
|
-->
|
|
</style>
|
|
|
|
|
|
</head>
|
|
|
|
<body lang="en" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
|
|
<a name="Fragments"></a>
|
|
<div class="header">
|
|
<p>
|
|
Next: <a href="Collect2.html#Collect2" accesskey="n" rel="next">Collect2</a>, Previous: <a href="Host-Config.html#Host-Config" accesskey="p" rel="prev">Host Config</a>, Up: <a href="index.html#Top" accesskey="u" rel="up">Top</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>
|
|
</div>
|
|
<hr>
|
|
<a name="Makefile-Fragments"></a>
|
|
<h2 class="chapter">19 Makefile Fragments</h2>
|
|
<a name="index-makefile-fragment"></a>
|
|
|
|
<p>When you configure GCC using the <samp>configure</samp> script, it will
|
|
construct the file <samp>Makefile</samp> from the template file
|
|
<samp>Makefile.in</samp>. When it does this, it can incorporate makefile
|
|
fragments from the <samp>config</samp> directory. These are used to set
|
|
Makefile parameters that are not amenable to being calculated by
|
|
autoconf. The list of fragments to incorporate is set by
|
|
<samp>config.gcc</samp> (and occasionally <samp>config.build</samp>
|
|
and <samp>config.host</samp>); See <a href="System-Config.html#System-Config">System Config</a>.
|
|
</p>
|
|
<p>Fragments are named either <samp>t-<var>target</var></samp> or <samp>x-<var>host</var></samp>,
|
|
depending on whether they are relevant to configuring GCC to produce
|
|
code for a particular target, or to configuring GCC to run on a
|
|
particular host. Here <var>target</var> and <var>host</var> are mnemonics
|
|
which usually have some relationship to the canonical system name, but
|
|
no formal connection.
|
|
</p>
|
|
<p>If these files do not exist, it means nothing needs to be added for a
|
|
given target or host. Most targets need a few <samp>t-<var>target</var></samp>
|
|
fragments, but needing <samp>x-<var>host</var></samp> fragments is rare.
|
|
</p>
|
|
<table class="menu" border="0" cellspacing="0">
|
|
<tr><td align="left" valign="top">• <a href="Target-Fragment.html#Target-Fragment" accesskey="1">Target Fragment</a>:</td><td> </td><td align="left" valign="top">Writing <samp>t-<var>target</var></samp> files.
|
|
</td></tr>
|
|
<tr><td align="left" valign="top">• <a href="Host-Fragment.html#Host-Fragment" accesskey="2">Host Fragment</a>:</td><td> </td><td align="left" valign="top">Writing <samp>x-<var>host</var></samp> files.
|
|
</td></tr>
|
|
</table>
|
|
|
|
|
|
|
|
|
|
</body>
|
|
</html>
|