Hello Yandong, (1)As I known, before compiling libvirt, some packages should be installed.

sudo apt-get install gcc make pkg-config libxml2-dev libgnutils-dev libdevmapper-dev libcur l4-gnutls-dev python-dev libpciaccess-dev libxen-dev libnl-dev

I just ran $yum builddep libvirt and it installed all the dependencies for libvirt. I have successfully compiled libvirt. I'll select some bugs to start working on. Thanks,

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-- ---------------------------------------------------------- regards, yandong