title: how to add g++ support in toolchain
body: <p>I want to add support for g++ compiler in my toochain. I am building toolchain for powerpc platform.I googled about it and found that we have to add external toolchian in our existing toolchain. </p>
  
  <p>I want to create this binary: CXX = powerpc-linux-uclibc-g++ </p>
  
  <p>I am using buildroot version 2010.02 and uClibc version 0.9.30.2 gcc version 4_3_4.
  any suggetions? </p>