Hi, erveryone: I compiled libvirt-1.1.2.tar.gz from source. my compile step: ./configure --prefix=/usr --libdir=/usr/lib64 --without-xen --without-xen-inotify \ --without-uml --without-openvz --without-vmware --without-vbox --without-lxc \ --without-esx --without-parallels --without-phyp -- without-test --with-yajl \ --without-selinux --without-secdriver-selinux make && make install #ls -l /usr/lib64/libvirt* -rw-r--r-- 1 root root 10144610 2月 6 15:34 /usr/lib64/libvirt.a -rwxr-xr-x 1 root root 1018 5月 8 19:51 /usr/lib64/libvirt.la -rwxr-xr-x 1 root root 1064 5月 8 19:51 /usr/lib64/libvirt-lxc.la lrwxrwxrwx 1 root root 23 5月 8 19:51 /usr/lib64/libvirt-lxc.so -> libvirt-lxc.so.0.1001.2 lrwxrwxrwx 1 root root 23 5月 8 19:51 /usr/lib64/libvirt-lxc.so.0 -> libvirt-lxc.so.0.1001.2 -rwxr-xr-x 1 root root 75419 5月 8 19:51 /usr/lib64/libvirt-lxc.so.0.1001.2 -rw-r--r-- 1 root root 78856 2月 6 15:34 /usr/lib64/libvirt-qemu.a -rwxr-xr-x 1 root root 1070 5月 8 19:51 /usr/lib64/libvirt-qemu.la lrwxrwxrwx 1 root root 24 5月 8 20:31 /usr/lib64/libvirt-qemu.so -> libvirt-qemu.so.0.1001.2 lrwxrwxrwx 1 root root 24 5月 8 20:31 /usr/lib64/libvirt-qemu.so.0 -> libvirt-qemu.so.0.1001.2 -rwxr-xr-x 1 root root 74097 5月 8 19:51 /usr/lib64/libvirt-qemu.so.0.1001.2 lrwxrwxrwx 1 root root 19 5月 8 20:31 /usr/lib64/libvirt.so -> libvirt.so.0.1001.2 lrwxrwxrwx 1 root root 19 5月 8 20:31 /usr/lib64/libvirt.so.0 -> libvirt.so.0.1001.2 -rwxr-xr-x 1 root root 8100016 5月 8 19:51 /usr/lib64/libvirt.so.0.1001.2 everyone seems ok, but when I install perl-Sys-Virt-0.10.2-5.el6.x86_64.rpm with rpm -ivh, it occured error message: error: Failed dependencies: libvirt.so.0()(64bit) is needed by perl-Sys-Virt-0.10.2-5.el6.x86_64 libvirt.so.0(LIBVIRT_0.0.3)(64bit) is needed by perl-Sys-Virt-0.10.2-5.el6.x86_64 libvirt.so.0(LIBVIRT_0.0.5)(64bit) is needed by perl-Sys-Virt-0.10.2-5.el6.x86_64 libvirt.so.0(LIBVIRT_0.1.0)(64bit) is needed by perl-Sys-Virt-0.10.2-5.el6.x86_64 libvirt.so.0(LIBVIRT_0.1.1)(64bit) is needed by perl-Sys-Virt-0.10.2-5.el6.x86_64 libvirt.so.0(LIBVIRT_0.1.4)(64bit) is needed by perl-Sys-Virt-0.10.2-5.el6.x86_64 libvirt.so.0(LIBVIRT_0.1.5)(64bit) is needed by perl-Sys-Virt-0.10.2-5.el6.x86_64 libvirt.so.0(LIBVIRT_0.1.9)(64bit) is needed by perl-Sys-Virt-0.10.2-5.el6.x86_64 libvirt.so.0(LIBVIRT_0.10.0)(64bit) is needed by perl-Sys-Virt-0.10.2-5.el6.x86_64 libvirt.so.0(LIBVIRT_0.10.2)(64bit) is needed by perl-Sys-Virt-0.10.2-5.el6.x86_64 ... I checked with the follow command. [root@CH08134252 ~]# nm -A -D /usr/lib64/libvirt.so.0 | grep LIBVIRT /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.0.3 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.0.5 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.1.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.1.1 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.1.4 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.1.5 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.1.9 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.10.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.10.2 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.2.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.2.1 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.2.3 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.3.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.3.2 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.3.3 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.4.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.4.1 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.4.2 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.4.5 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.5.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.6.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.6.1 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.6.3 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.6.4 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.7.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.7.1 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.7.2 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.7.3 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.7.5 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.7.7 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.8.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.8.1 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.8.2 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.8.5 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.8.6 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.8.8 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.10 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.11 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.13 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.2 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.3 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.4 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.5 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.7 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.8 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_0.9.9 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_1.0.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_1.0.1 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_1.0.2 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_1.0.3 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_1.0.5 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_1.0.6 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_1.1.0 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_1.1.1 /usr/lib64/libvirt.so.0:0000000000000000 A LIBVIRT_PRIVATE_1.1.2 I have no idea, please give me some help. thanks. xuanmao_001