Error when compiling

[recoilstv]

Hi, Anthony! When compiling on Ubuntu 20.04 I get the following error:

gcc mpx_gen.o rds.o waveforms.o fm_mpx.o control_pipe.o mpx_carriers.o resampler.o input.o audio_conversion.o file_input.o -lm -lsndfile -lsamplerate -lao -lpthread -o mpxgen
/usr/bin/ld: input.o:(.bss+0x4c): multiple definition of `channels'; fm_mpx.o:(.bss+0xc): first defined here
collect2: error: ld returned 1 exit status
make: *** [Makefile:26: mpxgen] Error 1