On amd64 (and other 64 bit arches?) we're seeing something simular: bt_nice_size.c: In function 'bt_nice_size': bt_nice_size.c:34: warning: format '%llu' expects type 'long long unsigned int', but argument 4 has type 'u_int64_t' bt_nice_size.c:34: warning: format '%llu' expects type 'long long unsigned int', but argument 4 has type 'u_int64_t' make[4]: *** [bt_nice_size.lo] Error 1 Kurt