99 lines
3.8 KiB
HTML
99 lines
3.8 KiB
HTML
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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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<!-- This file documents the GNU linker LD
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(Linaro_Binutils-2017.02)
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version 2.27.0.
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Copyright (C) 1991-2016 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
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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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<!-- Created by GNU Texinfo 5.2, http://www.gnu.org/software/texinfo/ -->
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<head>
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<title>LD: HIDDEN</title>
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<meta name="description" content="LD: HIDDEN">
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<meta name="keywords" content="LD: HIDDEN">
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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="LD-Index.html#LD-Index" rel="index" title="LD Index">
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<link href="Assignments.html#Assignments" rel="up" title="Assignments">
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<link href="PROVIDE.html#PROVIDE" rel="next" title="PROVIDE">
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<link href="Simple-Assignments.html#Simple-Assignments" rel="prev" title="Simple Assignments">
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<style type="text/css">
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<!--
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a.summary-letter {text-decoration: none}
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blockquote.smallquotation {font-size: smaller}
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div.display {margin-left: 3.2em}
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div.example {margin-left: 3.2em}
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div.indentedblock {margin-left: 3.2em}
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div.lisp {margin-left: 3.2em}
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div.smalldisplay {margin-left: 3.2em}
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div.smallexample {margin-left: 3.2em}
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div.smallindentedblock {margin-left: 3.2em; font-size: smaller}
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div.smalllisp {margin-left: 3.2em}
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kbd {font-style:oblique}
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pre.display {font-family: inherit}
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pre.format {font-family: inherit}
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pre.menu-comment {font-family: serif}
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pre.menu-preformatted {font-family: serif}
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pre.smalldisplay {font-family: inherit; font-size: smaller}
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pre.smallexample {font-size: smaller}
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pre.smallformat {font-family: inherit; font-size: smaller}
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pre.smalllisp {font-size: smaller}
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span.nocodebreak {white-space:nowrap}
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span.nolinebreak {white-space:nowrap}
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span.roman {font-family:serif; font-weight:normal}
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span.sansserif {font-family:sans-serif; font-weight:normal}
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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" bgcolor="#FFFFFF" text="#000000" link="#0000FF" vlink="#800080" alink="#FF0000">
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<a name="HIDDEN"></a>
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<div class="header">
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<p>
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Next: <a href="PROVIDE.html#PROVIDE" accesskey="n" rel="next">PROVIDE</a>, Previous: <a href="Simple-Assignments.html#Simple-Assignments" accesskey="p" rel="prev">Simple Assignments</a>, Up: <a href="Assignments.html#Assignments" accesskey="u" rel="up">Assignments</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="LD-Index.html#LD-Index" title="Index" rel="index">Index</a>]</p>
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</div>
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<hr>
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<a name="HIDDEN-1"></a>
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<h4 class="subsection">3.5.2 HIDDEN</h4>
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<a name="index-HIDDEN"></a>
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<p>For ELF targeted ports, define a symbol that will be hidden and won’t be
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exported. The syntax is <code>HIDDEN(<var>symbol</var> = <var>expression</var>)</code>.
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</p>
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<p>Here is the example from <a href="Simple-Assignments.html#Simple-Assignments">Simple Assignments</a>, rewritten to use
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<code>HIDDEN</code>:
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</p>
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<div class="smallexample">
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<pre class="smallexample">HIDDEN(floating_point = 0);
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SECTIONS
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{
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.text :
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{
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*(.text)
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HIDDEN(_etext = .);
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}
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HIDDEN(_bdata = (. + 3) & ~ 3);
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.data : { *(.data) }
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}
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</pre></div>
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<p>In this case none of the three symbols will be visible outside this module.
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</p>
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</body>
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</html>
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