<html lang="en"> <head> <title>Output Section Discarding - Untitled</title> <meta http-equiv="Content-Type" content="text/html"> <meta name="description" content="Untitled"> <meta name="generator" content="makeinfo 4.7"> <link title="Top" rel="start" href="index.html#Top"> <link rel="up" href="SECTIONS.html#SECTIONS" title="SECTIONS"> <link rel="prev" href="Output-Section-Keywords.html#Output-Section-Keywords" title="Output Section Keywords"> <link rel="next" href="Output-Section-Attributes.html#Output-Section-Attributes" title="Output Section Attributes"> <link href="http://www.gnu.org/software/texinfo/" rel="generator-home" title="Texinfo Homepage"> <!-- This file documents the GNU linker LD (GNU Binutils) version 2.19. Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 99, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 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 1.1 or any later version published by the Free Software Foundation; with no Invariant Sections, with no Front-Cover Texts, and with no Back-Cover Texts. A copy of the license is included in the section entitled ``GNU Free Documentation License''.--> <meta http-equiv="Content-Style-Type" content="text/css"> <style type="text/css"><!-- pre.display { font-family:inherit } pre.format { font-family:inherit } pre.smalldisplay { font-family:inherit; font-size:smaller } pre.smallformat { font-family:inherit; font-size:smaller } pre.smallexample { font-size:smaller } pre.smalllisp { font-size:smaller } span.sc { font-variant:small-caps } span.roman { font-family: serif; font-weight: normal; } --></style> </head> <body> <div class="node"> <p> <a name="Output-Section-Discarding"></a>Next: <a rel="next" accesskey="n" href="Output-Section-Attributes.html#Output-Section-Attributes">Output Section Attributes</a>, Previous: <a rel="previous" accesskey="p" href="Output-Section-Keywords.html#Output-Section-Keywords">Output Section Keywords</a>, Up: <a rel="up" accesskey="u" href="SECTIONS.html#SECTIONS">SECTIONS</a> <hr><br> </div> <h4 class="subsection">3.6.7 Output Section Discarding</h4> <p><a name="index-discarding-sections-400"></a><a name="index-sections_002c-discarding-401"></a><a name="index-removing-sections-402"></a>The linker will not create output sections with no contents. This is for convenience when referring to input sections that may or may not be present in any of the input files. For example: <pre class="smallexample"> .foo : { *(.foo) } </pre> <p class="noindent">will only create a <span class="samp">.foo</span> section in the output file if there is a <span class="samp">.foo</span> section in at least one input file, and if the input sections are not all empty. Other link script directives that allocate space in an output section will also create the output section. <p>The linker will ignore address assignments (see <a href="Output-Section-Address.html#Output-Section-Address">Output Section Address</a>) on discarded output sections, except when the linker script defines symbols in the output section. In that case the linker will obey the address assignments, possibly advancing dot even though the section is discarded. <p><a name="index-_002fDISCARD_002f-403"></a>The special output section name <span class="samp">/DISCARD/</span> may be used to discard input sections. Any input sections which are assigned to an output section named <span class="samp">/DISCARD/</span> are not included in the output file. </body></html>