/usr/include/gnuradio/analog/ is in gnuradio-dev 3.7.9.1-2ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/gnuradio/analog/agc.h
/usr/include/gnuradio/analog/agc2.h
/usr/include/gnuradio/analog/agc2_cc.h
/usr/include/gnuradio/analog/agc2_ff.h
/usr/include/gnuradio/analog/agc3_cc.h
/usr/include/gnuradio/analog/agc_cc.h
/usr/include/gnuradio/analog/agc_ff.h
/usr/include/gnuradio/analog/api.h
/usr/include/gnuradio/analog/cpfsk_bc.h
/usr/include/gnuradio/analog/cpm.h
/usr/include/gnuradio/analog/ctcss_squelch_ff.h
/usr/include/gnuradio/analog/dpll_bb.h
/usr/include/gnuradio/analog/fastnoise_source_c.h
/usr/include/gnuradio/analog/fastnoise_source_f.h
/usr/include/gnuradio/analog/fastnoise_source_i.h
/usr/include/gnuradio/analog/fastnoise_source_s.h
/usr/include/gnuradio/analog/feedforward_agc_cc.h
/usr/include/gnuradio/analog/fmdet_cf.h
/usr/include/gnuradio/analog/frequency_modulator_fc.h
/usr/include/gnuradio/analog/noise_source_c.h
/usr/include/gnuradio/analog/noise_source_f.h
/usr/include/gnuradio/analog/noise_source_i.h
/usr/include/gnuradio/analog/noise_source_s.h
/usr/include/gnuradio/analog/noise_type.h
/usr/include/gnuradio/analog/phase_modulator_fc.h
/usr/include/gnuradio/analog/pll_carriertracking_cc.h
/usr/include/gnuradio/analog/pll_freqdet_cf.h
/usr/include/gnuradio/analog/pll_refout_cc.h
/usr/include/gnuradio/analog/probe_avg_mag_sqrd_c.h
/usr/include/gnuradio/analog/probe_avg_mag_sqrd_cf.h
/usr/include/gnuradio/analog/probe_avg_mag_sqrd_f.h
/usr/include/gnuradio/analog/pwr_squelch_cc.h
/usr/include/gnuradio/analog/pwr_squelch_ff.h
/usr/include/gnuradio/analog/quadrature_demod_cf.h
/usr/include/gnuradio/analog/rail_ff.h
/usr/include/gnuradio/analog/random_uniform_source_b.h
/usr/include/gnuradio/analog/random_uniform_source_i.h
/usr/include/gnuradio/analog/random_uniform_source_s.h
/usr/include/gnuradio/analog/sig_source_c.h
/usr/include/gnuradio/analog/sig_source_f.h
/usr/include/gnuradio/analog/sig_source_i.h
/usr/include/gnuradio/analog/sig_source_s.h
/usr/include/gnuradio/analog/sig_source_waveform.h
/usr/include/gnuradio/analog/simple_squelch_cc.h
/usr/include/gnuradio/analog/squelch_base_cc.h
/usr/include/gnuradio/analog/squelch_base_ff.h