Chan ss7 and asterisk 11 installation issue

hi
i am unable to install chan ss7)2.2.0 on asterisk 11 my dahdi version is dahdi-linux-complete-2.10.0+2.10.0.
while running make on chan_ss7.2.2.0 i received following error
make: *** No rule to make target ../usr/src/asterisk-11.12..0/main/lock.o', needed bymtp3d’. Stop.

please assist

Regards,

Awais