/usr/include/ is in gr-radar 0.0.0.20161018-3build1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/radar/
/usr/include/radar/api.h
/usr/include/radar/crop_matrix_vcvc.h
/usr/include/radar/estimator_cw.h
/usr/include/radar/estimator_fmcw.h
/usr/include/radar/estimator_fsk.h
/usr/include/radar/estimator_ofdm.h
/usr/include/radar/estimator_rcs.h
/usr/include/radar/estimator_sync_pulse_c.h
/usr/include/radar/find_max_peak_c.h
/usr/include/radar/msg_gate.h
/usr/include/radar/msg_manipulator.h
/usr/include/radar/ofdm_cyclic_prefix_remover_cvc.h
/usr/include/radar/ofdm_divide_vcvc.h
/usr/include/radar/os_cfar_2d_vc.h
/usr/include/radar/os_cfar_c.h
/usr/include/radar/print_results.h
/usr/include/radar/qtgui_scatter_plot.h
/usr/include/radar/qtgui_spectrogram_plot.h
/usr/include/radar/qtgui_time_plot.h
/usr/include/radar/radar/
/usr/include/radar/radar/swig/
/usr/include/radar/radar/swig/radar_swig.i
/usr/include/radar/radar/swig/radar_swig_doc.i
/usr/include/radar/signal_generator_cw_c.h
/usr/include/radar/signal_generator_fmcw_c.h
/usr/include/radar/signal_generator_fsk_c.h
/usr/include/radar/signal_generator_sync_pulse_c.h
/usr/include/radar/split_cc.h
/usr/include/radar/split_fsk_cc.h
/usr/include/radar/static_target_simulator_cc.h
/usr/include/radar/tracking_singletarget.h
/usr/include/radar/transpose_matrix_vcvc.h
/usr/include/radar/trigger_command.h
/usr/include/radar/ts_fft_cc.h
/usr/include/radar/usrp_echotimer_cc.h