125 lines
3.8 KiB
HTML
125 lines
3.8 KiB
HTML
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
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<link type="text/css" rel="stylesheet" href="style.css"><!-- Generated by The Open Group's rhtm tool v1.2.1 -->
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<!-- Copyright (c) 2001 The Open Group, All Rights Reserved -->
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<title><dlfcn.h></title>
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</head>
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<body bgcolor="white">
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<script type="text/javascript" language="JavaScript" src="../jscript/codes.js">
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<basefont size="3"> <a name="<dlfcn.h>"></a> <a name="tag_13_09"></a><!-- <dlfcn.h> -->
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<!--header start-->
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<center><font size="2">The Open Group Base Specifications Issue 6<br>
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IEEE Std 1003.1-2001<br>
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Copyright © 2001 The IEEE and The Open Group, All Rights reserved.</font></center>
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<!--header end-->
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<hr size="2" noshade>
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<h4><a name="tag_13_09_01"></a>NAME</h4>
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<blockquote>dlfcn.h - dynamic linking</blockquote>
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<h4><a name="tag_13_09_02"></a>SYNOPSIS</h4>
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<blockquote class="synopsis">
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<div class="box"><tt><sup>[<a href="javascript:open_code('XSI')">XSI</a>]</sup> <img src="../images/opt-start.gif" alt=
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"[Option Start]" border="0"> #include <dlfcn.h> <img src="../images/opt-end.gif" alt="[Option End]" border="0"></tt></div>
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</blockquote>
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<h4><a name="tag_13_09_03"></a>DESCRIPTION</h4>
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<blockquote>
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<p>The <i><dlfcn.h></i> header shall define at least the following macros for use in the construction of a <a href=
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"../functions/dlopen.html"><i>dlopen</i>()</a> <i>mode</i> argument:</p>
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<dl compact>
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<dt>RTLD_LAZY</dt>
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<dd>Relocations are performed at an implementation-defined time.</dd>
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<dt>RTLD_NOW</dt>
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<dd>Relocations are performed when the object is loaded.</dd>
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<dt>RTLD_GLOBAL</dt>
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<dd>All symbols are available for relocation processing of other modules.</dd>
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<dt>RTLD_LOCAL</dt>
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<dd>All symbols are not made available for relocation processing by other modules.</dd>
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</dl>
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<p>The following shall be declared as functions and may also be defined as macros. Function prototypes shall be provided.</p>
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<pre>
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<tt>int dlclose(void *);
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char *dlerror(void);
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void *dlopen(const char *, int);
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void *dlsym(void *restrict, const char *restrict);
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</tt>
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</pre>
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</blockquote>
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<hr>
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<div class="box"><em>The following sections are informative.</em></div>
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<h4><a name="tag_13_09_04"></a>APPLICATION USAGE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_13_09_05"></a>RATIONALE</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_13_09_06"></a>FUTURE DIRECTIONS</h4>
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<blockquote>
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<p>None.</p>
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</blockquote>
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<h4><a name="tag_13_09_07"></a>SEE ALSO</h4>
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<blockquote>
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<p>The System Interfaces volume of IEEE Std 1003.1-2001, <a href="../functions/dlopen.html"><i>dlopen</i>()</a>, <a href=
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"../functions/dlclose.html"><i>dlclose</i>()</a>, <a href="../functions/dlsym.html"><i>dlsym</i>()</a>, <a href=
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"../functions/dlerror.html"><i>dlerror</i>()</a></p>
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</blockquote>
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<h4><a name="tag_13_09_08"></a>CHANGE HISTORY</h4>
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<blockquote>
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<p>First released in Issue 5.</p>
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</blockquote>
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<h4><a name="tag_13_09_09"></a>Issue 6</h4>
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<blockquote>
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<p>The <b>restrict</b> keyword is added to the prototype for <a href="../functions/dlsym.html"><i>dlsym</i>()</a>.</p>
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</blockquote>
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<div class="box"><em>End of informative text.</em></div>
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<hr>
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<hr size="2" noshade>
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<center><font size="2"><!--footer start-->
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UNIX ® is a registered Trademark of The Open Group.<br>
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POSIX ® is a registered Trademark of The IEEE.<br>
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[ <a href="../mindex.html">Main Index</a> | <a href="../basedefs/contents.html">XBD</a> | <a href=
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"../utilities/contents.html">XCU</a> | <a href="../functions/contents.html">XSH</a> | <a href="../xrat/contents.html">XRAT</a>
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