What is the right way to initialize GLibc?

[Steven Stewart-Gallus]

Hello,

Suppose I'm experimenting with making an executable shared library
like GLibc itself is. I can get something simple like that working but
I want to do more and to do that I need to initialize libc. I think
the right way to do this is to call __libc_start_main manually in my
libraries start function but I don't know how to do that. What is the
right way to initialize GLibc?