How to compile the firmware of AR750S?

What should I do to compile the NAND firmware of the AR750S? I haven’t found a way to compile for a long time. Can you give me some tutorials or compilation plans? Thank you very much!

Chinese:
我想要给AR750S编译NAND固件。我使用了官方snapshot源,但只能找到nor固件的选项。我找了很久都没有找到合适的解决方案。
请问能否为我提供一些帮助,给我提供一些教程,为我指点一二。十分感谢!

what are you trying to accomplish?

firmware that use NAND Instead of NOR flash

You can use our official repo, which is based on OpenWRT-18.06. GitHub - gl-inet/openwrt: This repository is fork from openwrt official repo, we will update the latest tag and release GL.iNet firmware based on it.

For OpenWRT official repo, you can use ath79 instead of ar71xx.