GCC cross compiler dependency

[naveen yadav <yad.naveen@xxxxxxxxx>]

Hi all,

I want to know is there any dependency of host environment to build a
cross toolchain.
Suppose I want to build GCC 4.4 for MIPS arch.
1.So is there some min version of GCC  I need to keep on my host build
server.So how can i found which is best for me.
2. or Some min kernel version I need to keep.
3. What is best and optimise way to build a cross toolchain.

Thanks