Just a heads up that the internal struct copied from libusb changes in
libusb-0.9. Compile tested only at this time. If/when mainstream
distros transition to the newer libusb, the conflicting struct
definitions will make life fun 
diff -Nurd gnuradio-3.1.2.orig/usrp/host/lib/legacy/usrp_prims.cc
gnuradio-3.1.2/usrp/host/lib/legacy/usrp_prims.cc
— gnuradio-3.1.2.orig/usrp/host/lib/legacy/usrp_prims.cc
2008-03-05 16:12:38.000000000 -0500
+++ gnuradio-3.1.2/usrp/host/lib/legacy/usrp_prims.cc 2008-07-12
08:04:09.000000000 -0400
@@ -131,10 +131,18 @@
static struct usb_device *
dev_handle_to_dev (usb_dev_handle *udh)
{
- struct list_head {
-
struct list_head *prev, *next; - };
- struct usb_dev_handle_kludge {
- int fd;
- struct usb_bus *bus;
- struct usb_device *device;
-
/* lock protects claimed_interfaces */ -
pthread_mutex_t lock; -
unsigned long claimed_interfaces; -
struct list_head list; -
struct usb_device *device; -
unsigned char os_priv[0];};
return ((struct usb_dev_handle_kludge *) udh)->device;
Philip