GCC/GNAT Configuration File for Cross Compiler

[Roy LaFleur via Gcc-help <gcc-help@xxxxxxxxxxx>]

Hello All,

Is there some tutorial or more resources that can provide with more
information on how to build a GNAT cross compiler. For example im trying to
build an i686-elf cross compiler from the x86_64-linux-gnu using Ubuntu
18.04.

Is there a sample Configuration or Makefile on how to build a GNAT cross
compiler ?
If so where ?

Any more information is appreciated

-Roy