Hi Rama/Dave - I can't say -why- the error is happening, but the error is because for some reason the llibusb1 library is not being included in the linking. This might be because the libusb1 library has been updated since the last time GNU Radio was built; or, it might be for other reasons too; not always easy to know or tell. Anyway, I'd say that the most reliable way to get over this issue is to "rm -rf" the whole build directory & redo the whole cmake command, make, and make install from scratch. On most systems this will be pretty fast, so it's generally not a big deal. Hope this helps! - MLD
On Wed, Sep 9, 2015, at 05:02 PM, Rama V wrote: > I have uninstalled GNU Radio from /gnuradio/build directory because of > an error and I wish to reinstall it. But when I try to do that from > the same directory by using 'sudo make install', I keep getting an > error as > > [ 97%] Built target pygen_gr_fcd_swig_ecb11 [ 98%] Built target > pygen_gr_fcd_python_fcd_37821 Linking CXX executable fcd_nfm_rx > ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to > `libusb_free_config_descriptor' ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to > `libusb_get_config_descriptor' ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_open' > ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to > `libusb_detach_kernel_driver' ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_get_device_list' > ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_control_transfer' > ../../lib/libgnuradio-fcd-3.7.8git.so.0.0.0: undefined reference to > `libusb_exit' ../../lib/libgnuradio-fcd-3.7.8git.so.0.0.0: undefined > reference to `libusb_free_device_list' ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_cancel_transfer' > ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_free_transfer' > ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_submit_transfer' > ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_interrupt_transfer' > ../../lib/libgnuradio-fcd-3.7.8git.so.0.0.0: undefined reference to > `libusb_get_device_descriptor' ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_claim_interface' > ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_handle_events' > ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to > `libusb_handle_events_completed' ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_close' > ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to > `libusb_kernel_driver_active' ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_release_interface' > ../../lib/libgnuradio-fcd-3.7.8git.so.0.0.0: undefined reference to > `libusb_get_bus_number' ../../lib/libgnuradio-fcd-3.7.8git.so.0.0.0: > undefined reference to `libusb_init' ../../lib/libgnuradio-fcd- > 3.7.8git.so.0.0.0: undefined reference to `libusb_get_device_address' > ../../lib/libgnuradio-fcd-3.7.8git.so.0.0.0: undefined reference to > `libusb_alloc_transfer' ../../lib/libgnuradio-fcd-3.7.8git.so.0.0.0: > undefined reference to `libusb_get_active_config_descriptor' collect2: > error: ld returned 1 exit status make[2]: *** [gr- > fcd/examples/c++/fcd_nfm_rx] Error 1 make[1]: *** [gr- > fcd/examples/c++/CMakeFiles/fcd_nfm_rx.dir/all] Error 2 make: *** > [all] Error 2 > > Please help as to what I can do. I am in the middle of my experiment. > Any suggestions will be kindly helpful.
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