I am building gretl on ubuntu 13.10 with the openmp option and there is the following error:

make[1]: *** No rule to make target `../lib/src/bfgs_mp.c', needed by `gretl_bfgs.lo'.  Stop.

make[1]: Leaving directory `/home/asus/gretl_cvs/gretl/lib'

make: *** [lib] Error 2

what should I do?