title: How to build Cross Compiler Toolchain on Fedora for other Linux distributions?
body: <p>my Linux: Fedora 14 x64
  my gcc: 4.5.1
  my Glibc： 2.12.90</p>
  
  <p>target Linux: "Ubuntu 8.04.4 LTS" hardy
  target kernel: 2.6.24-29-server x64
  target gcc: 4.2.4
  target Glibc： 2.7</p>
  
  <p>I need gcc/g++ and fortran.</p>
  
  <p>I Googled and most documents I found are somehow outdated and targeting for ARM, not for other Linux.</p>
  
  <p>Any step by step document will be greatly appreciated.</p>
  
  <p>THanKs.</p>