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87 lines
4.5 KiB
HTML
87 lines
4.5 KiB
HTML
15 years ago
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<html lang="en">
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<head>
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<title>Scripts - Untitled</title>
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<meta http-equiv="Content-Type" content="text/html">
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<meta name="description" content="Untitled">
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<meta name="generator" content="makeinfo 4.7">
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<link title="Top" rel="start" href="index.html#Top">
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<link rel="prev" href="Invocation.html#Invocation" title="Invocation">
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<link rel="next" href="Machine-Dependent.html#Machine-Dependent" title="Machine Dependent">
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<link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage">
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<!--
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This file documents the GNU linker LD
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(GNU Binutils)
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version 2.19.
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Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000,
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2001, 2002, 2003, 2004, 2005, 2006, 2007 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 1.1
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or any later version published by the Free Software Foundation;
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with no Invariant Sections, with no Front-Cover Texts, and with no
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Back-Cover Texts. A copy of the license is included in the
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section entitled ``GNU Free Documentation License''.-->
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<meta http-equiv="Content-Style-Type" content="text/css">
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<style type="text/css"><!--
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pre.display { font-family:inherit }
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pre.format { font-family:inherit }
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pre.smalldisplay { font-family:inherit; font-size:smaller }
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pre.smallformat { font-family:inherit; font-size:smaller }
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pre.smallexample { font-size:smaller }
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pre.smalllisp { font-size:smaller }
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span.sc { font-variant:small-caps }
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span.roman { font-family: serif; font-weight: normal; }
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--></style>
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</head>
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<body>
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<div class="node">
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<p>
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<a name="Scripts"></a>Next: <a rel="next" accesskey="n" href="Machine-Dependent.html#Machine-Dependent">Machine Dependent</a>,
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Previous: <a rel="previous" accesskey="p" href="Invocation.html#Invocation">Invocation</a>,
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Up: <a rel="up" accesskey="u" href="index.html#Top">Top</a>
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<hr><br>
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</div>
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<h2 class="chapter">3 Linker Scripts</h2>
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<p><a name="index-scripts-307"></a><a name="index-linker-scripts-308"></a><a name="index-command-files-309"></a>Every link is controlled by a <dfn>linker script</dfn>. This script is
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written in the linker command language.
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<p>The main purpose of the linker script is to describe how the sections in
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the input files should be mapped into the output file, and to control
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the memory layout of the output file. Most linker scripts do nothing
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more than this. However, when necessary, the linker script can also
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direct the linker to perform many other operations, using the commands
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described below.
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<p>The linker always uses a linker script. If you do not supply one
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yourself, the linker will use a default script that is compiled into the
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linker executable. You can use the <span class="samp">--verbose</span> command line option
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to display the default linker script. Certain command line options,
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such as <span class="samp">-r</span> or <span class="samp">-N</span>, will affect the default linker script.
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<p>You may supply your own linker script by using the <span class="samp">-T</span> command
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line option. When you do this, your linker script will replace the
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default linker script.
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<p>You may also use linker scripts implicitly by naming them as input files
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to the linker, as though they were files to be linked. See <a href="Implicit-Linker-Scripts.html#Implicit-Linker-Scripts">Implicit Linker Scripts</a>.
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<ul class="menu">
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<li><a accesskey="1" href="Basic-Script-Concepts.html#Basic-Script-Concepts">Basic Script Concepts</a>: Basic Linker Script Concepts
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<li><a accesskey="2" href="Script-Format.html#Script-Format">Script Format</a>: Linker Script Format
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<li><a accesskey="3" href="Simple-Example.html#Simple-Example">Simple Example</a>: Simple Linker Script Example
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<li><a accesskey="4" href="Simple-Commands.html#Simple-Commands">Simple Commands</a>: Simple Linker Script Commands
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<li><a accesskey="5" href="Assignments.html#Assignments">Assignments</a>: Assigning Values to Symbols
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<li><a accesskey="6" href="SECTIONS.html#SECTIONS">SECTIONS</a>: SECTIONS Command
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<li><a accesskey="7" href="MEMORY.html#MEMORY">MEMORY</a>: MEMORY Command
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<li><a accesskey="8" href="PHDRS.html#PHDRS">PHDRS</a>: PHDRS Command
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<li><a accesskey="9" href="VERSION.html#VERSION">VERSION</a>: VERSION Command
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<li><a href="Expressions.html#Expressions">Expressions</a>: Expressions in Linker Scripts
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<li><a href="Implicit-Linker-Scripts.html#Implicit-Linker-Scripts">Implicit Linker Scripts</a>: Implicit Linker Scripts
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</ul>
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</body></html>
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