问题
I am working on a project that involves recording from a mic on a raspberry pi. for now i am getting this error while the program is running.
python3: src/hostapi/alsa/pa_linux_alsa.c:3641: PaAlsaStreamComponent_BeginPolling: Assertion `ret == self->nfds' failed. Aborted
while searching for ways to fix this, i figured out the file pa_linux_alsa.c belongs to port audio. please refer to the following links.
modified pa_linux_alsa.c i think
how to install port audio
download link
first link is about the error and a modified fix, still dont know where to copy and the last two are about installing portaudio. apparently there is no easier way to install this with a command.
i downloaded the pa_snapshot enhanced version of it. but i dont know where i am supposed to put these files to begin to configure and make as in the readme. I copied the portaudio directory in to home/pi (in the user i think. "cd" and copied it there) then did as in the readme and rebooted the system. i dont see any changes in the error in program. i tried using the command whereis with pa_linux_alsa.c. that command also doesn't show the file or anything related to portaudio.
来源：https://stackoverflow.com/questions/59006083/how-to-install-portaudio-on-pi-properly