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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 3.2 Final//EN"><html><head><!-- Copyright 1997 The Open Group, All Rights Reserved --><title>cxref</title></head><body bgcolor=white><center><font size=2>The Single UNIX ® Specification, Version 2<br>Copyright © 1997 The Open Group</font></center><hr size=2 noshade><h4><a name = "tag_001_014_320"> </a>NAME</h4><blockquote>cxref - generate a C-language program cross-reference table(<b>DEVELOPMENT</b>)</blockquote><h4><a name = "tag_001_014_321"> </a>SYNOPSIS</h4><blockquote><pre><code>cxref <b>[</b>-cs<b>][</b>-o <i>file</i><b>][</b>-w <i>num</i><b>] [</b>-D <i>name</i><b>[</b>=<i>def</i><b>]]</b>...<b>[</b>-I <i>dir</i><b>]</b>...<b>[</b>-U <i>name</i><b>]</b>...<i>file</i> ...</code></pre></blockquote><h4><a name = "tag_001_014_322"> </a>DESCRIPTION</h4><blockquote>The<i>cxref</i>utilityanalyses a collection of C-language<i>file</i>sand attempts to build a cross-reference table.Information from<b>#define</b>lines is included in the symbol table.A sorted listing is written to standard output of all symbols (auto, staticand global) in each<i>file</i>separately, or with the<b>-c</b>option, in combination.Each symbolcontains an asterisk before the declaring reference.</blockquote><h4><a name = "tag_001_014_323"> </a>OPTIONS</h4><blockquote>The<i>cxref</i>utility supports the <b>XBD</b> specification, <a href="../xbd/utilconv.html#usg"><b>Utility Syntax Guidelines</b> </a> ,except that the order of the<b>-D</b>,<b>-I</b>and<b>-U</b>options (which are identical to their interpretation by<i><a href="c89.html">c89</a></i>)is significant.The following options are supported:<dl compact><dt><b>-c</b><dd>Write a combined cross-reference of all input files.<dt><b>-w </b><i>num</i><dd>Format output no wider than<i>num</i>(decimal) columns.This option defaults to 80 if<i>num</i>is not specified or is less than 51.<dt><b>-o </b><i>file</i><dd>Direct output to named<i>file</i>.<dt><b>-s</b><dd>Operate silently; do not print input filenames.</dl></blockquote><h4><a name = "tag_001_014_324"> </a>OPERANDS</h4><blockquote>The following operand is supported:<dl compact><dt><i>file</i><dd>A pathname of a C-language source file.</dl></blockquote><h4><a name = "tag_001_014_325"> </a>STDIN</h4><blockquote>Not used.</blockquote><h4><a name = "tag_001_014_326"> </a>INPUT FILES</h4><blockquote>The input files are C-language source files.</blockquote><h4><a name = "tag_001_014_327"> </a>ENVIRONMENT VARIABLES</h4><blockquote>The following environment variables affect the execution of<i>cxref</i>:<dl compact><dt><i>LANG</i><dd>Provide a default value for the internationalisation variablesthat are unset or null.If<i>LANG</i>is unset or null, the corresponding value from theimplementation-dependent default locale will be used.If any of the internationalisation variables contains an invalid setting, theutility will behave as if none of the variables had been defined.<dt><i>LC_ALL</i><dd>If set to a non-empty string value,override the values of all the other internationalisation variables.<dt><i>LC_COLLATE</i><dd>Determine the locale for the ordering of the output.<dt><i>LC_CTYPE</i><dd>Determine thelocale for the interpretation of sequences of bytes of text data ascharacters (for example, single- as opposed to multi-byte charactersin arguments and input files).<dt><i>LC_MESSAGES</i><dd>Determine the locale that should be used to affectthe format and contents of diagnosticmessages written to standard error.<dt><i>NLSPATH</i><dd>Determine the location of message cataloguesfor the processing of<i>LC_MESSAGES .</i></dl></blockquote><h4><a name = "tag_001_014_328"> </a>ASYNCHRONOUS EVENTS</h4><blockquote>Default.</blockquote><h4><a name = "tag_001_014_329"> </a>STDOUT</h4><blockquote>The standard output is used for the cross-reference listing,unless the<b>-o</b>option is used to select a different output file.<p>The format of standard output is unspecified,except that the following information is included:<ul><p><li>If the<b>-c</b>option is not specified, each portion of the listing startswith the name of the input file on a separate line.<p><li>The name line is followed by a sorted list of symbols, eachwith its associated location pathname, the name of the functionin which it appears (if it is not a function name itself),and line number references.<p><li>Each line number may be preceded by an asterisk(*)flag, meaningthat this is the declaring reference.Other single-character flags, with implementation-dependentmeanings, may be included.<p></ul></blockquote><h4><a name = "tag_001_014_330"> </a>STDERR</h4><blockquote>Used only for diagnostic messages.</blockquote><h4><a name = "tag_001_014_331"> </a>OUTPUT FILES</h4><blockquote>The output file named by the<b>-o</b>option is used instead of standard output.</blockquote><h4><a name = "tag_001_014_332"> </a>EXTENDED DESCRIPTION</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_333"> </a>EXIT STATUS</h4><blockquote>The following exit values are returned:<dl compact><dt>0<dd>Successful completion.<dt>>0<dd>An error occurred.</dl></blockquote><h4><a name = "tag_001_014_334"> </a>CONSEQUENCES OF ERRORS</h4><blockquote>Default.</blockquote><h4><a name = "tag_001_014_335"> </a>APPLICATION USAGE</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_336"> </a>EXAMPLES</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_337"> </a>FUTURE DIRECTIONS</h4><blockquote>None.</blockquote><h4><a name = "tag_001_014_338"> </a>SEE ALSO</h4><blockquote><i><a href="cc.html">cc</a></i>,<i><a href="c89.html">c89</a></i>.</blockquote><hr size=2 noshade><center><font size=2>UNIX ® is a registered Trademark of The Open Group.<br>Copyright © 1997 The Open Group<br> [ <a href="../index.html">Main Index</a> | <a href="../xshix.html">XSH</a> | <a href="../xcuix.html">XCU</a> | <a href="../xbdix.html">XBD</a> | <a href="../cursesix.html">XCURSES</a> | <a href="../xnsix.html">XNS</a> ]</font></center><hr size=2 noshade></body></html>⌨️ 快捷键说明
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