[libvirt] Cannot find suitable emulator for x86_64

Hi ! I'm trying to reproduce a bug that i'm facing with libvirt 3.0.0 on Debian stretch. I compiled the latest stable libvirt (4.4.0), and installed it: ./autogen.sh ./configure --prefix=$HOME/usr --localstatedir=/var make sudo make install But when i try to run ~/usr/bin/virsh version, it complains with this message: virsh # version Compiled against library: libvirt 4.4.0 Using library: libvirt 4.4.0 Using API: QEMU 4.4.0 error: failed to get the hypervisor version error: internal error: Cannot find suitable emulator for x86_64 This is what i can find in the output of ~/usr/sbin/libvirtd: 2018-06-13 11:30:17.361+0000: 27502: error : virCapabilitiesDomainDataLookupInternal:736 : invalid argument: could not find capabilities for arch=x86_64 domaintype=qemu 2018-06-13 11:30:17.361+0000: 27502: error : virQEMUCapsGetDefaultVersion:1455 : internal error: Cannot find suitable emulator for x86_64 My environment has not changed, QEMU is still installed. Can you help me understand what is wrong here ? Thank you in advance ! -- Mathieu Tarral