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<?xml version="1.0"?>
<html>
<body>
<h1 >Windows support</h1>
<p>
Instructions for compiling and installing libvirt on Windows.
</p>
<ul>
<li>
<a href="#Windows_binaries">Binaries</a>
</li>
<li>
<a href="#Windows_compiling">Compiling from source</a>
</li>
</ul>
<h3>
<a name="Windows_binaries" id="Windows_binaries">Binaries</a>
</h3>
<p>
Binaries will be available from
<a href="ftp://libvirt.org/libvirt/win32">the download area</a>
(but we don't have binaries at the moment).
</p>
<h3>
<a name="Windows_compiling" id="Windows_compiling">Compiling from source</a>
</h3>
<p>
These are the steps to compile libvirt and the other
tools from source on Windows.
</p>
<p>
You will need:
</p>
<ol>
<li> MS Windows. Microsoft makes free (as beer) versions
of some of its operating systems available to
<a href="http://msdn.microsoft.com/">MSDN subscribers</a>.
We used Windows 2008 Server for testing, virtualized under
Linux using KVM-53 (earlier versions of KVM and QEMU won't
run recent versions of Windows because of lack of full ACPI
support, so make sure you have the latest KVM).
</li>
<li><a href="http://www.cygwin.com/">Cygwin</a>'s
<a href="http://www.cygwin.com/setup.exe">setup.exe</a>.
</li>
<li> A large amount of free disk space to install Cygwin.
Make sure you have 10 GB free to install most Cygwin packages,
although if you pare down the list of dependencies you may
get away with much less. </li>
<li> A network connection for Windows, since Cygwin downloads packages
from the net as it installs. </li>
<li>
<a href="http://www.libvirt.org/downloads.html">Libvirt
latest version from CVS</a>
</li>
<li> The latest source patch from
<a href="ftp://libvirt.org/libvirt/win32">the download area</a>. </li>
<li> A version of Cygwin sunrpc, patched to support building
<code>librpc.dll</code>.
A patch and a binary package are available from
<a href="ftp://libvirt.org/libvirt/win32">the download area</a>. </li>
</ol>
<p>
These are the steps to take to compile libvirt from
source on Windows:
</p>
<ol>
<li>
<p>Run Cygwin
<a href="http://www.cygwin.com/setup.exe">setup.exe</a>.
When it starts up it will show a dialog like this:
</p>
<img src="windows-cygwin-1.png" width="504" height="388" alt="Cygwin Net Release Setup Program"/>
</li>
<li>
<p>Step through the setup program accepting defaults
or making choices as appropriate, until you get to the
screen for selecting packages:</p>
<img src="windows-cygwin-2.png" width="505" height="388" alt="Cygwin Select Packages screen"/>
<p>
The user interface here is very confusing. You have to
click the "recycling icon" as shown by the arrow:
</p>
<img src="windows-cygwin-3.png" width="298" height="200" alt="Cygwin Recycling Icon"/>
<p>
which takes the package (and all packages in the subtree)
through several states such as "Install", "Reinstall", "Keep",
"Skip", "Uninstall", etc.
</p>
</li>
<li>
<p>You can install "All" (everything) or better select
just the groups and packages needed. Select the following
groups and packages for installation:
</p>
<table>
<tr>
<th valign="top" align="right"> Groups </th>
<td>
Archive <br/>
Base <br/>
Devel <br/>
Editors <br/>
Mingw <br/>
Perl <br/>
Python <br/>
Shells <br/></td>
</tr>
<tr>
<th valign="top" align="right"> Packages </th>
<td>
openssh <br/>
sunrpc ≥ 4.0-4 (see below) <br/></td>
</tr>
</table>
</li>
<li>
<p> Once Cygwin has finished installing, start a Cygwin bash shell
(either click on the desktop icon or look for Cygwin bash shell
in the Start menu). </p>
<p> The very first time you start the Cygwin bash shell, you may
find you need to run the <code>mkpasswd</code> and <code>mkgroup</code>
commands in order to create <code>/etc/passwd</code> and
<code>/etc/group</code> files from Windows users. If this
is needed then a message is printed in the shell.
Note that you need to do this as Windows Administrator. </p>
</li>
<li>
<p> Install Cygwin sunrpc ≥ 4.0-4 package, patched to include
<code>librpc.dll</code>.
To do this, first check to see whether <code>/usr/lib/librpc.dll</code>
exists. If it does, you're good to go and can skip to the next
step. </p>
<p>
If you don't have this file, either install the binary package
<a href="ftp://libvirt.org/libvirt/win32/sunrpc-4.0-4.tar.bz2">sunrpc-4.0-4.tar.bz2</a> (just unpack it, as Administrator, in the Cygwin root directory).
Or you can download the
<a href="ftp://libvirt.org/libvirt/win32/sunrpc-4.0-dll.patch">source patch</a>
and apply it by hand to the Cygwin sunrpc package (eg. using
cygport).
</p>
</li>
<li>
<p>
Check out
<a href="http://www.libvirt.org/downloads.html">Libvirt from CVS</a> and
<a href="ftp://libvirt.org/libvirt/win32">apply the latest Windows patch</a>
to the source.
</p>
</li>
<li>
<p> Configure libvirt by doing: </p>
<pre>
autoreconf
./configure --without-xen --without-qemu
</pre>
<p> (The autoreconf step is probably optional). </p>
<p> The configure step will tell you if you have all the
required parts installed. If something is missing you
will need to go back through Cygwin setup and install it.
</p>
</li>
<li>
<p> Rebuild the XDR structures: </p>
<pre>
rm qemud/remote_protocol.[ch] qemud/remote_dispatch_*.h
make -C qemud remote_protocol.c
</pre>
</li>
<li>
<p> Build: </p>
<pre>
make
</pre>
<p> If this step is not successful, you should post a full
report <i>including complete messages</i> to
<a href="http://www.redhat.com/mailman/listinfo/libvir-list">the
libvirt mailing list</a>.
</p>
</li>
<li>
<p> Test it. If you have access to a remote machine
running Xen or QEMU/KVM, and the libvirt daemon (<code>libvirtd</code>)
then you should be able to connect to it and display
domains using, eg:
</p>
<pre>
src/virsh.exe <a href="http://libvirt.org/uri.html">-c qemu://remote/system</a> list --all
</pre>
<p>
Please read more about <a href="http://libvirt.org/remote.html">remote
support</a> before sending bug reports, to make sure that
any problems are really Windows and not just with remote
configuration / security.
</p>
</li>
<li>
<p>
You may want to install the library and programs by doing:
</p>
<pre>
make install
</pre>
</li>
<li>
<p>
The above steps should also build and install Python modules.
However for reasons which I don't fully understand, Python won't
look in the
non-standard <code>/usr/local/lib/python*/site-packages/</code>
directory by default so you may need to set the environment
variable PYTHONPATH:
</p>
<pre>
export PYTHONPATH=/usr/local/lib/python2.5/site-packages
</pre>
<p>
(Change the version number to your version of Python). You
can test Python support from the command line:
</p>
<pre>
python
>>> import libvirt
>>> conn = libvirt.open ("test:///default")
>>> conn.listDomainsID ()
[1]
>>> dom = conn.lookupByID (1)
>>> dom.XMLDesc (0)
"<domain type='test' id='1'> ..."
</pre>
<p>
The most common failure will be with <code>import libvirt</code>
which usually indicates that either <code>PYTHONPATH</code> is
wrong or a DLL cannot be loaded.
</p>
</li>
</ol>
</body>
</html>
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