ifneq ($(shell $(PKGCONF) --atleast-version=0.9.3 libvirt; echo $$?), 0)
$(error vm_power_manager requires libvirt >= 0.9.3)
endif
ifneq ($(shell $(PKGCONF) --atleast-version=0.9.3 libvirt; echo $$?), 0)
$(error vm_power_manager requires libvirt >= 0.9.3)
endif