SDL2 报错：No available video device

搜索后找到了对应的解决方案，原话是这样的

If you built your own SDL, you probably didn’t have development headers
for PulseAudio (or ALSA), so it’s trying to use /dev/dsp, which doesn’t
exist on many modern Linux systems (hence, SDL_Init(SDL_INIT_AUDIO)
succeeds, but no devices are found when you try to open one). “apt-get
install libasound2-dev libpulse-dev” and rebuild SDL…let the configure
script find the new headers so it includes PulseAudio and ALSA support.

其实说白了就是你编译的环境默认使用dsp设备播放，但是由于现代操作系统已经不支持dsp了
你需要安装 libasound2-dev libpulse-dev这些库使SDL能使用PulseAudio播放.

解决办法

sudo apt  install libasound2-dev libpulse-dev