Hydra compile error

when run ./bootstrap && ./configure --prefix=$GR
–with-gnuradio-srcdir=$GNURADIO_SRCDIR && make && make install
in the gr-hydra directory
error occur as below:

rf_usrp_server_mbh.cc:6:31: error: mb_protocol_class.h: No such file or
directory
rf_usrp_server_mbh.cc:27: error: 鈥榤b_protocol_class_init鈥?does not name
a type
make[7]: *** [rf_usrp_server_mbh.lo] Error 1
make[7]: Leaving directory /opt/hydra/gr-hydra/src/lib/rf/test' make[6]: *** [all-recursive] Error 1 make[6]: Leaving directory/opt/hydra/gr-hydra/src/lib/rf/test’
make[5]: *** [all] Error 2
make[5]: Leaving directory /opt/hydra/gr-hydra/src/lib/rf/test' make[4]: *** [all-recursive] Error 1 make[4]: Leaving directory/opt/hydra/gr-hydra/src/lib/rf’
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory /opt/hydra/gr-hydra/src/lib' make[2]: *** [all-recursive] Error 1 make[2]: Leaving directory/opt/hydra/gr-hydra/src’
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/opt/hydra/gr-hydra’
make: *** [all] Error 2

Is there any bug, how to fix it? help me