Building a Tool Chain
 

Hi,
I want to steps for how to build a tool chain. I worked on linux but on kernel compilation and building tool chain. So, plz any one can explain me the steps for how to build a tool chain. I want to build a tool chain on Intel x86 Platform with Fedora core 4 linux for At91RM9200 platform and if any one know where can i freely download the patches for this platform.

There is a example of toolchain but I don't think it's what you want to do.. http://www.linuxfromscratch.org/lfs/view/development/

I don't think you need to re-invent the wheel. There are many pre-built ARM gcc toolchains available - this one is one of them:
http://www.gnuarm.org/

It's take only 2-3 hours to build.. you don't need to install all stuff like grub and things like that.. install binutils, gcc and glibc.. with the extension for you microcontroller... you choose the arch in binutils and after you just add a -mcpu <your arch> or something like this in your shell variable