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<html><head><title>ExtUtils::Liblist (Perl in a Nutshell, 2nd Edition)</title><link rel="stylesheet" type="text/css" href="../style/style1.css" /><meta name="DC.Creator" content="Stephen Spainhour" /><meta name="DC.Format" content="text/xml" scheme="MIME" /><meta name="DC.Language" content="en-US" /><meta name="DC.Publisher" content="O'Reilly & Associates, Inc." /><meta name="DC.Source" scheme="ISBN" content="0596002416L" /><meta name="DC.Subject.Keyword" content="stuff" /><meta name="DC.Title" content="Perl in a Nutshell, 2nd Edition" /><meta name="DC.Type" content="Text.Monograph" /></head><body bgcolor="#ffffff"><img src="gifs/smbanner.gif" usemap="#banner-map" border="0" alt="Book Home" /><map name="banner-map"><area shape="rect" coords="1,-2,616,66" href="index.htm" alt="Java and XSLT" /><area shape="rect" coords="629,-11,726,25" href="jobjects/fsearch.htm" alt="Search this book" /></map><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch08_72.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228" /><td align="right" valign="top" width="228"><a href="ch08_74.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr></table></div><h2 class="sect1">8.73. ExtUtils::Liblist</h2><p><a name="INDEX-1418" />Used for building a Makefile for a Perlmodule. Takes a list of libraries and returns platform-appropriatelines that can be included in the Makefile.</p><blockquote><pre class="code">require ExtUtils::Liblist;ExtUtils::Liblist::ext($<em class="replaceable"><tt>potential_libs</em>[, $<em class="replaceable">verbose</tt></em>]);</pre></blockquote><p>The input list<tt class="literal">$</tt><em class="replaceable"><tt>potential_libs</tt></em> is inthe form <em class="emphasis">-llib1 -llib2 -llib3</em>. Additionallibrary paths may be included in the form<em class="emphasis">-L/another/path</em>, which affects searches for allsubsequent libraries. If the Boolean<tt class="literal">$</tt><em class="replaceable"><tt>verbose</tt></em> is specified,verbose output messages are provided. Returns a list of four scalarvalues:</p><dl><dt><i>EXTRALIBS</i></dt><dd>List of libraries that need to be linked with <em class="emphasis">ld</em>when linking a Perl binary that includes a static extension</p></dd><dt><i>LDLOADLIBS</i></dt><dd>List of static or dynamic libraries that can or must be linked whencreating a shared library using <em class="emphasis">ld</em></p></dd><dt><i>LD_RUN_PATH</i></dt><dd>Colon-separated list of the directories in LDLOADLIBS</p></dd><dt><i>BSLOADLIBS</i></dt><dd>List of libraries that are needed but can be linked in dynamicallywith the DynaLoader at runtime</p></dd></dl><p>The Win32 version (in the standard Perl distribution) is differentfrom the Unix-OS/2 version in several ways:</p><ul><li><p><em class="emphasis">-l</em> and <em class="emphasis">-L</em> are not requiredon the library and path specifications.</p></li><li><p>Entries must be libraries, not plain object files.</p></li><li><p>If <tt class="literal">$</tt><em class="replaceable"><tt>potential_libs</tt></em> isempty, the return value is also empty.</p></li><li><p>The specified libraries can include both static and import libraries.</p></li><li><p>LDLOADLIBS and EXTRALIBS are always identical; BSLOADLIBS andLD_RUN_PATH are always empty.</p></li></ul><hr width="684" align="left" /><div class="navbar"><table width="684" border="0"><tr><td align="left" valign="top" width="228"><a href="ch08_72.htm"><img src="../gifs/txtpreva.gif" alt="Previous" border="0" /></a></td><td align="center" valign="top" width="228"><a href="index.htm"><img src="../gifs/txthome.gif" alt="Home" border="0" /></a></td><td align="right" valign="top" width="228"><a href="ch08_74.htm"><img src="../gifs/txtnexta.gif" alt="Next" border="0" /></a></td></tr><tr><td align="left" valign="top" width="228">8.72. ExtUtils::Installed</td><td align="center" valign="top" width="228"><a href="index/index.htm"><img src="../gifs/index.gif" alt="Book Index" border="0" /></a></td><td align="right" valign="top" width="228">8.74. ExtUtils::MakeMaker</td></tr></table></div><hr width="684" align="left" /><img src="../gifs/navbar.gif" usemap="#library-map" border="0" alt="Library Navigation Links" /><p><p><font size="-1"><a href="copyrght.htm">Copyright © 2002</a> O'Reilly & Associates. 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