Compilation issues - RPi 3B+ - Raspbian Lite Buster

[jayant4001]

While compiling version 5.0.6 on a Pi 3B+ running Raspbian Lite Buster, I get the following warning:

/home/pi/source/RTLSDR-Airband-5.0.6/src/hello_fft/gpu_fft_base.c: In function ‘void gpu_fft_base_release(GPU_FFT_BASE*)’:
/home/pi/source/RTLSDR-Airband-5.0.6/src/hello_fft/gpu_fft_base.c:134:27: error: cast from type ‘volatile unsigned int*’ to type ‘void*’ casts away qualifiers [-Werror=cast-qual]
     unmapmem((void*)base->peri, bcm_host_get_peripheral_size());
                           ^~~~
cc1plus: all warnings being treated as errors
make[2]: *** [src/hello_fft/CMakeFiles/hello_fft.dir/build.make:115: src/hello_fft/CMakeFiles/hello_fft.dir/gpu_fft_base.c.o] Error 1
make[1]: *** [CMakeFiles/Makefile2:171: src/hello_fft/CMakeFiles/hello_fft.dir/all] Error 2
make: *** [Makefile:130: all] Error 2

The Cmake config is:

-- - Version string:            5.0.6
-- - Build type:                Release
-- - Operating system:          Linux
-- - SDR drivers:
--   - librtlsdr:               requested: ON, enabled: TRUE
--   - mirisdr:                 requested: ON, enabled: FALSE
--   - soapysdr:                requested: ON, enabled: FALSE
-- - Other options:
--   - Platform:                rpiv2
--   - Build Unit Tests:        FALSE
--   - Broadcom VideoCore GPU:  TRUE
--   - NFM support:             OFF
--   - PulseAudio:              requested: ON, enabled: TRUE
--   - Profiling:               requested: OFF, enabled: FALSE
--   - Icecast TLS support:     TRUE

Since the compiler is treating warnings as errors, I can't build the binary. If anyone has encountered this and has any ideas on how to fix it, please help. I'm not sure what I'm doing wrong, I've compiled v4.2.0 without any problems on the same Pi.

Note: It compiles and runs fine on a Pi4 running Raspbian lite Bullseye (without GPU FFT support).

[jayant4001]

Update: If I manually remove the -Werror flag from the make params, the binary builds and runs fine even with the warning. However, since -Werror is set by default, this probably needs to be fixed.

[charlie-foxtrot]

Could you try the fix_rpiv2_build branch?

[charlie-foxtrot]

fixed in v5.0.8

[jayant4001]

Lightning quick! Thanks charlie-foxtrot. V5.0.9 rpiv2 compiles flawlessly.