Thank you Matthias for investigating and fixing the issue. I will try to re-build the 32 bit dlls using your msys_setup script. Also thank you for explanation for my other questions. --- On Wed, 5/1/13, Matthias Bolte <matthias.bolte@xxxxxxxxxxxxxx> wrote: > From: Matthias Bolte <matthias.bolte@xxxxxxxxxxxxxx> > Subject: Re: Java client error on Windows 7 64 bit for Libvirt on KVM > To: "george john" <simplyjoe13@xxxxxxxxx> > Cc: "libvirt mail-list" <libvirt-users@xxxxxxxxxx> > Date: Wednesday, May 1, 2013, 10:40 AM > 2013/4/29 george john <simplyjoe13@xxxxxxxxx>: > > Hi, > > I need some help in building a Java client on Windows 7 > 64 bit plaftorm to manage a KVM using the libvirt APIs. > Using the instructions at http://libvirt.org/java.html, i was able to build > libvirt.jar. My understanding is that libvirt.jar uses JNA > to call libvirt's native windows library. I tried using the > libvirt dlls in the experimental Windows installation > package mentioned in http://libvirt.org/windows.html at http://libvirt.org/sources/win32_experimental/Libvirt-0.8.8-0.exe > > but whenever I try to connect to my remote API, I get > the below Java exception : > > Exception in thread "main" > java.lang.UnsatisfiedLinkError: %1 is not a valid Win32 > application. > > > > at > com.sun.jna.Native.open(Native Method) > > at > com.sun.jna.Native.open(Native.java:1718) > > at > com.sun.jna.NativeLibrary.loadLibrary(NativeLibrary.java:210) > > at > com.sun.jna.NativeLibrary.getInstance(NativeLibrary.java:322) > > at > com.sun.jna.Library$Handler.<init>(Library.java:142) > > at > com.sun.jna.Native.loadLibrary(Native.java:387) > > at > com.sun.jna.Native.loadLibrary(Native.java:366) > > at > org.libvirt.jna.Libvirt.<clinit>(Unknown Source) > > at > org.libvirt.Library.<clinit>(Unknown Source) > > at > org.libvirt.Connect.<init>(Unknown Source) > > at > Main.main(Main.java:8) > > > > But when I try the same client code on a Windows XP 32 > bit machine (with 32 bit JVM), I don't see this problem and > the connection succeeds. So it looks like the problem is > that I am not using 64 bit windows libvirt dlls. Is my > assumption correct? Is there a Windows installer with 64 bit > Libvirt dlls ? Or are the 64 bit version of DLLs published > somewhere? > > A 64bit process cannot use 32bit DLLs. You'll need libvirt > and its > dependencies compiled for 64bit. I'm not aware of any > pre-compiled > 64bit libvirt DLLs. > > > I tried using Matthias Bolte's msys_setup script (I > tried in 2 machines) and in both machines, I get the below > error when I try to run compile_libxml2.sh as per > instructions https://github.com/photron/msys_setup/blob/master/readme_libvirt.txt > > > > Last few lines before the error is : > > > >>>>>>>>>>>>>>>>>> > > make[5]: Leaving directory > `/src/libxml2/libxml2-2.9.0-0/python' > > make[4]: Leaving directory > `/src/libxml2/libxml2-2.9.0-0/python' > > Making install in tests > > make[4]: Entering directory > `/src/libxml2/libxml2-2.9.0-0/python/tests' > > make[5]: Entering directory > `/src/libxml2/libxml2-2.9.0-0/python/tests' > > make[5]: Nothing to be done for `install-exec-am'. > > test -z "/share/doc/libxml2-python-2.9.0/examples" || > /bin/mkdir -p "/share/doc/ > > libxml2-python-2.9.0/examples" > > /bin/install -c -m 644 build.py attribs.py tst.py > tstxpath.py xpathext.py push. > > py pushSAX.py pushSAXhtml.py error.py serialize.py > validate.py tstURI.py cutnpas > > te.py xpathret.py xpath.py outbuf.py inbuf.py > resolver.py regexp.py reader.py re > > ader2.py reader3.py reader4.py reader5.py reader6.py > reader7.py reader8.py reade > > rnext.py walker.py nsdel.py ctxterror.py readererr.py > relaxng.py schema.py threa > > d2.py sync.py tstLastError.py indexes.py dtdvalid.py > tstmem.py '/share/doc/libxm > > l2-python-2.9.0/examples' > > /bin/install -c -m 644 validDTD.py > validSchemas.py validRNG.py compareNodes.py > > xpathns.py xpathleak.py tst.xml valid.xml invalid.xml > test.dtd '/share/doc/libxm > > l2-python-2.9.0/examples' > > make[5]: Leaving directory > `/src/libxml2/libxml2-2.9.0-0/python/tests' > > make[4]: Leaving directory > `/src/libxml2/libxml2-2.9.0-0/python/tests' > > make[3]: Leaving directory > `/src/libxml2/libxml2-2.9.0-0/python' > > make[2]: Leaving directory > `/src/libxml2/libxml2-2.9.0-0/python' > > make[1]: Leaving directory > `/src/libxml2/libxml2-2.9.0-0' > > + cp /python/Lib/site-packages/libxml2mod.dll > /python/DLLs/libxml2mod.pyd > > cp: cannot stat > `/python/Lib/site-packages/libxml2mod.dll': No such file or > dire > > ctory > >>>>>>>>>>>>>>>>>>> > > I just fixed this problem, but this won't help you with your > 64bit > problem. My msys_setup scripts compile libvirt for 32bit and > it isn't > that easy to extend them for 64bit. This is mainly due to > libvirt's > dependencies. For example, for gnutls the scripts just > download > pre-compiled 32bit DLLs. It'll require some work to get > libvirt and > its dependencies compiled for 64bit. > > -- > Matthias Bolte > http://photron.blogspot.com > _______________________________________________ libvirt-users mailing list libvirt-users@xxxxxxxxxx https://www.redhat.com/mailman/listinfo/libvirt-users