Dear Richard, Yes I do have libvirt-dev installed already and virsh --version was : 0.9.8 ! - I tried to comment out the lines but still i got some errors due to that [ undeclared variables etc. ] - Made changes to files : src/guestfs-internal.h src/launch-libvirt.c src/launch.c As you mentioned on the patch but still had errors on building the library.. Didn't save the error output because the solution was just to update libvirt , 0.9.8 version to a latter one has that bug as it seemed.. I chose to update from 0.9.8 to 1.2.20 from tarball and finally I could build the library -> ./configure && make worked like charm [took like 6-8 mins though : P] !! Thanks again for your time and your fast response !