Trying to build the 6.4.1 release on a self-hosted 6.4.1 NTO machine.

Ultimate goal is to create a self-hosted PPC gcc (all other tools components built OK with minimal tweaking). For now, 
just trying to build the nto-x86 version on NTO, so using the nto-x86-o-ntox86 directory 

The instructions say 'type make', which I do, and it starts to configure, before complaining about requiring GMP 4.1+ 
and MPFR 2.3.0,  a need for missing gmp.h, and suggesting various flag options. Then it stops.

What should I be using, or am I missing something ?

Thanks !

Dave