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79 lines
7.2 KiB
HTML
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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
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<html xmlns="http://www.w3.org/1999/xhtml"><head><meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1" /><link rel="SHORTCUT ICON" href="/favicon.ico" /><style type="text/css">
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</style><title>FAQ</title></head><body bgcolor="#8b7765" text="#000000" link="#a06060" vlink="#000000"><table border="0" width="100%" cellpadding="5" cellspacing="0" align="center"><tr><td width="120"><a href="http://www.redhat.com/"><img src="redhat.gif" alt="Red Hat Logo" /></a></td><td><table border="0" width="90%" cellpadding="2" cellspacing="0" align="center" bgcolor="#000000"><tr><td><table width="100%" border="0" cellspacing="1" cellpadding="3" bgcolor="#fffacd"><tr><td align="center"><h1>Libvir the virtualization API</h1><h2>FAQ</h2></td></tr></table></td></tr></table></td></tr></table><table border="0" cellpadding="4" cellspacing="0" width="100%" align="center"><tr><td bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="2" width="100%"><tr><td valign="top" width="200" bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="1" width="100%" bgcolor="#000000"><tr><td><table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>Main Menu</b></center></td></tr><tr><td bgcolor="#fffacd"><form action="search.php" enctype="application/x-www-form-urlencoded" method="get"><input name="query" type="text" size="20" value="" /><input name="submit" type="submit" value="Search ..." /></form><ul><li><a href="index.html">Home</a></li><li><a href="news.html">Releases</a></li><li><a href="intro.html">Introduction</a></li><li><a href="downloads.html">Downloads</a></li><li><a href="FAQ.html">FAQ</a></li><li><a href="bugs.html">Reporting bugs and getting help</a></li><li><a style="font-weight:bold" href="html/index.html">API Menu</a></li><li><a href="ChangeLog.html">Recent Changes</a></li></ul></td></tr></table><table width="100%" border="0" cellspacing="1" cellpadding="3"><tr><td colspan="1" bgcolor="#eecfa1" align="center"><center><b>Related links</b></center></td></tr><tr><td bgcolor="#fffacd"><ul><li><a href="https://www.redhat.com/archives/libvir-list/">Mail archive</a></li><li><a href="http://www.cl.cam.ac.uk/Research/SRG/netos/xen/index.html">Xen project</a></li></ul></td></tr></table></td></tr></table><a href="http://xmlsoft.org/"><img src="Libxml2-Logo-90x34.gif" alt="Made with Libxml2 Logo" /></a></td><td valign="top" bgcolor="#8b7765"><table border="0" cellspacing="0" cellpadding="1" width="100%"><tr><td><table border="0" cellspacing="0" cellpadding="1" width="100%" bgcolor="#000000"><tr><td><table border="0" cellpadding="3" cellspacing="1" width="100%"><tr><td bgcolor="#fffacd"><p>Table of Contents:</p><ul><li><a href="FAQ.html#License">License(s)</a></li>
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<li><a href="FAQ.html#Installati">Installation</a></li>
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<li><a href="FAQ.html#Compilatio">Compilation</a></li>
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<li><a href="FAQ.html#Developer">Developer corner</a></li>
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</ul><h3><a name="License" id="License">License</a>(s)</h3><ol><li><em>Licensing Terms for libvir</em>
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<p>libvir is released under the <a href="http://www.opensource.org/licenses/lgpl-license.html">GNU Lesser
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General Public License</a>, see the file COPYING.LIB in the distribution
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for the precise wording. The only library that libvir depends upon is the
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Xen store access library which is also licenced under the LGPL.</p>
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</li>
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<li><em>Can I embed libvir in a proprietary application ?</em>
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<p>Yes. The LGPL allows you to embed libvir into a proprietary
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application. It would be graceful to send-back bug fixes and improvements
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as patches for possible incorporation in the main development tree. It
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will decrease your maintainance costs anyway if you do so.</p>
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</li>
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</ol><h3><a name="Installati" id="Installati">Installation</a></h3><ol><li><em>Where can I get libvir</em> ?
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<p>The original distribution comes from <a href="ftp://libvir.org/libvir/">ftp://libvir.org/libvir/</a>.</p>
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</li>
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<li><em>I can't install the libvir/libvir-devel RPM packages due to failed
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dependencies</em>
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<p>The most generic solution is to re-fetch the latest src.rpm , and
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rebuild it locally with</p>
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<p><code>rpm --rebuild libvir-xxx.src.rpm</code>.</p>
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<p>If everything goes well it will generate two binary rpm packages (one
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providing the shared libs and virsh, and the other one, the -devel
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package, providing includes, static libraries and scripts needed to build
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applications with libvir that you can install locally.</p>
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<p>One can also rebuild the RPMs from a tarball:</p>
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<p><code>rpmbuild -ta libdir-xxx.tar.gz</code></p>
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<p>Or from a configured tree with:</p>
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<p><code>make rpm</code></p>
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</li>
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<li><em>Failure to use the API for non-root users</em>
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<p>Large parts of the API are only accessible as root, however the read
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only access to the xenstore data doesnot have to be forbidden to user, at
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least for monitoring purposes. If "virsh info" fails to run as an user,
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change the mode of the xenstore read-only socket with:</p>
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<p><code>chmod 666 /var/run/xenstored/socket_ro</code></p>
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</li>
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</ol><h3><a name="Compilatio" id="Compilatio">Compilation</a></h3><ol><li><em>What is the process to compile libvir ?</em>
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<p>As most UNIX libraries libvir follows the "standard":</p>
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<p><code>gunzip -c libvir-xxx.tar.gz | tar xvf -</code></p>
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<p><code>cd libvir-xxxx</code></p>
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<p><code>./configure --help</code></p>
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<p>to see the options, then the compilation/installation proper</p>
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<p><code>./configure [possible options]</code></p>
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<p><code>make</code></p>
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<p><code>make install</code></p>
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<p>At that point you may have to rerun ldconfig or a similar utility to
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update your list of installed shared libs.</p>
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</li>
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<li><em>What other libraries are needed to compile/install libvir ?</em>
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<p>Libvir requires libxenstore, which is usually provided by the xen
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packages as well as the public headers to compile against libxenstore.</p>
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</li>
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<li><em>I use the CVS version and there is no configure script</em>
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<p>The configure script (and other Makefiles) are generated. Use the
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autogen.sh script to regenerate the configure script and Makefiles,
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like:</p>
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<p><code>./autogen.sh --prefix=/usr --disable-shared</code></p>
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</li>
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</ol><h3><a name="Developer" id="Developer">Developer</a> corner</h3><ol><li><em>Troubles compiling or linking programs using libvir</em>
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<p>To simplify the process of reusing the library, libvir comes with
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pkgconfig support, which can be used directly from autoconf support or
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via the pkg-config command line tool, like:</p>
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<p><code>pkg-config libvir --libs</code></p>
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</li>
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</ol><p><a href="bugs.html">Daniel Veillard</a></p></td></tr></table></td></tr></table></td></tr></table></td></tr></table></td></tr></table></body></html>
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