anchor.diff:      inherit (pkgsuclibc) fetchurl;
       linkStatic = true;
     };
  +
  +  inherit pkgs;
   
     build = 
   
  
positive.code: 
          cp -d ${gmp}/lib/libgmp*.so* $out/lib
          cp -d ${mpfr}/lib/libmpfr*.so* $out/lib
          
          # Copy binutils.
          for i in as ld ar ranlib nm strip readelf objdump; do
  
negative.code:   gcc = pkgs.gcc47;
    gmp = pkgs.gmp.hostDrv;
    mpfr = pkgs.mpfr.hostDrv;
    ppl = pkgs.ppl.hostDrv;
    cloogppl = pkgs.cloogppl.hostDrv;
    cloog = pkgs.cloog.hostDrv;
    zlib = pkgs.zlib.hostDrv;
    isl = pkgs.isl.hostDrv;
    mpc = pkgs.mpc.hostDrv;
    binutils = pkgs.binutils.hostDrv;
    klibc = pkgs.klibc.hostDrv;
  
  