[Discuss-gnuradio] usrp installn problem: "usb_get_string_simple' undeclared"

[amit malani]

while installing USRP i get this problem.

usrp_prims.cc: In function `std::string usrp_serial_number(usb_dev_handle*)':
usrp_prims.cc:1351: `usb_get_string_simple' undeclared (first use this function)

where is this function supposed to be declared and defined?
am I doing anything wrong.
I updated latest from CVS.

please let me know
thanks,
amit