anchor.diff:      ++ mips64el
       ++ powerpc64
       ++ powerpc64le
  -    ++ x86_64
  -    ;
  +    ++ x86_64;
   
     bit32 = [ ]
       ++ armv7b
  
positive.code:     ++ armv7b
      ++ armv7l
      ++ armv8b
      ++ armv8l
      ;
  
    mips-all = [ ]
      ++ mips
      ++ mipsel
      ++ mips64
      ++ mips64el
      ;
  
    powerpc-all = [ ]
      ++ powerpc
      ++ powerpcle
      ++ powerpc64
      ++ powerpc64le
      ;
  
    x86-all = [ ]
      ++ i686
  
negative.code:     ++ powerpcle-freebsd
      ++ powerpc64-freebsd
      ++ powerpc64le-freebsd
      ++ x86_64-freebsd;
  
    illumos = [ ]
      ++ x86_64-illumos;
  
    linux = [ ]
      ++ aarch64-linux
  