+#################### libvirt version selection
+# for now things are a bit confused
+# on f18 we build with our own 1.0.4 and that works fine
+# on f20 we have tried the mainstream (1.1.3) libvirt,
+# as well as the latest 1.2.1 release, and both exhibit an issue that needs to be fixed
+# in addition once this is done we might need to have f18+1.2.1 as well
+# so for now we leave the option to set the following on the command line
+# LIBVIRT=104 (for f18)
+# LIBVIRT=mainstream (for f20)
+# LIBVIRT=121 (for f18 or f20)
+
+# set default according to distro
+ifeq "$(LIBVIRT)" ""
+ifeq "$(DISTRONAME)" "f18"
+LIBVIRT=104
+else
+LIBVIRT=121
+endif
+endif
+
+ifeq "$(LIBVIRT)" "104"
+local_libvirt=true