How to build Debian packages for bare metal ARM GCC

Hi,

Is there a debian way to build a bare metal GCC (C/C++) cross compiler
(package) for bare metal ARM. I mean like the binutils package which can be
build by setting TARGET=arm-none-eabi yielding a bare metal arm binutils
toolset. Can something similar be done for the Debian (Wheezy) GCC package
(gcc-4.7_4.7.2-5).
I did look into the README.cross file but the instructions there seem to be
for a arm-linux-* toolchain.

regards
Franz