Yes, I have been editing and adding to this Howto
http://olph.gdium.com/wiki/doku.php/system:building_a_toolchain
Please edit /add / correct steps to get a working toolchain for
MIPSEL (Little Endian) operational.
I was stuck on the GMP and MPFR additons to GCC. I think it is
corrected know Aug 8, 2009,
but I have not tested to get the gcc_mips_ completely built yet.
Please add what you learn about getting library sources and kernel
headers too.