cross compiling xfree86 for powerpc

["vishnuvaradan vishnuvaradan" <vishnuvaradanr@xxxxxxxxx>]

Hi all
I have a GNU cross compiler toolchain for PowerPC for
Linux and I am trying to compile XFree86 source
for PowerPC on a fedora X86 PC.

It would be of great help if anyone could suggest a
procedure for the same.

Give me document/link related to cross compiling xfree86 for powerpc 

Thanks in advance. 
Vishnu