I don't want to discourage you from compiling from source. But is
there a particular feature of libguestfs 1.17.40 that you need which
isn't in libguestfs 1.16.19 from here?
http://people.redhat.com/~rjones/libguestfs-RHEL-6.3-preview/
Rich.
--
Richard Jones, Virtualization Group, Red Hat
http://people.redhat.com/~rjones
virt-p2v converts physical machines to virtual machines. Boot with a
live CD or over the network (PXE) and turn machines into Xen guests.
http://et.redhat.com/~rjones/virt-p2v