RHEL 7 have libvirt 1.2.8 which is the minimum version according to configure check LIBVIRT_REQUIRED=1.2.8 libvirt-php.c: In function 'zm_startup_libvirt': libvirt-php.c:1351:136: error: 'VIR_DOMAIN_BLOCK_JOB_SPEED_BANDWIDTH_BYTES' undeclared (first use in this function) REGISTER_LONG_CONSTANT("VIR_DOMAIN_BLOCK_JOB_SPEED_BANDWIDTH_BYTES", VIR_DOMAIN_BLOCK_JOB_SPEED_BANDWIDTH_BYTES, CONST_CS | CONST_PERSISTENT); Remi