Configuring gcc for a new OS.

[Yannick Cote]

Hello,

I would like to know if there's any documentation on how to configure gcc to
support a new OS. Im currently working on the development of an OS and we 
want to build a cross compiler running on OpenBSD for that new OS. 

I did configure it before using the *-gnu* base stuff targetting ELF format. 
Since then, I tried to reconfigure and rebuild binutils + gcc to generate 
a.out format. For some reasons, it seemed to generate unusable binary so, since
binary format is not a big deal for me due to the primitive state of the OS
development project, Im just looking for some documentation to figure out
what would be the mandatory options for a basic plain ELF format compiler.

Thanks,

	- Yannick