Compile GCC 9.X on the RK3399

Using https://solarianprogrammer.com/2016/10/07/building-gcc-ubuntu-linux/

Stream For Cheap With RK3399 #2 - Compile FFMPEG

In part one of this series, I tried the installed ffmpeg version on the OrangePi RK3399, and made a few assumptions. Now, let’s try to compile ffmpeg on this very...