https://gcc.gnu.org/bugzilla/show_bug.cgi?id=88715
--- Comment #5 from Andrew Pinski <pinskia at gcc dot gnu.org> --- https://raghunathlolur.wordpress.com/2014/06/30/combined-tree-build-of-gcc-binutils-and-libraries/ https://stackoverflow.com/questions/1726042/recipe-for-compiling-binutils-gcc-together etc.