[Libguestfs] error: expected declaration specifiers or '...' before 'virDomainPtr'

hi there got a problem with the installation of libguestfs 1.16.19 on ubuntu.... ./configure --disable-appliance --disable-daemon runs just fine, but make crashes with In file included from virt.c:38:0: guestfs.h:2160:70: error: expected declaration specifiers or '...' before 'virDomainPtr' make[3]: *** [libguestfs_la-virt.lo] Error 1 make[3]: Leaving directory `/home/projekt/libguestfs-1.16.19/src' make[2]: *** [all] Error 2 make[2]: Leaving directory `/home/projekt/libguestfs-1.16.19/src' make[1]: *** [all-recursive] Error 1 make[1]: Leaving directory `/home/projekt/libguestfs-1.16.19' make: *** [all] Error 2 any idea? Swoop