<snip> >> Now I wonder what is the proper way to export "Module.symvers" >> information to the outside so that modules that use it do not have to >> copy that file into their directory.
If you use a top-level Makefile like the one below it will create the necessary Module.symvers file. I am not sure if this is the correct or recommended way, I had kernel modules in separate directories a long
while back when I was learning+testing and this worked for me.