Operating system development, my opinion on grub

For operating system development, I have been looking for a long time and have not been able to find a tutorial that can successfully install grub2 into the disk image file, this is probably because the Japanese author of grub2 didn't think much about general operating system development. The worst thing is that legacy grub cannot be compiled on the new fedora/ubuntu. It does not mean that it cannot be compiled, but it will be compiled with the new binutils. Let's take a look at the following:

Https://bugzilla.redhat.com/show_bug.cgi? Id = 718722