How to cross-compile?

[dangbo08]

Hello, I want to cross-compile this project into my arm single chip computer to achieve the effect of nvr in openipc. Since the video display interface of nvr is not the effect I want, I want to cross-compile and then redesign the video display and reasonably plan the data display of flight control. However, I always encounter the problem of cross-compilation environment when compiling, so I have been unable to succeed, so I would like to ask if you have relevant solutions, please consult me, thank you very much ！！！！