anchor.diff:  
     aarch64 = [ ]
       ++ aarch64-freebsd
  -    ++ aarch64-linux
  -    ;
  +    ++ aarch64-linux;
   
     aarch64_be = [ ]
       ++ aarch64_be-freebsd
  -    ++ aarch64_be-linux
  -    ;
  +    ++ aarch64_be-linux;
   
     armv7b = [ ]
       ++ armv7b-freebsd
  -    ++ armv7b-linux
  -    ;
  +    ++ armv7b-linux;
   
     armv7l = [ ]
       ++ armv7l-freebsd
  -    ++ armv7l-linux
  -    ;
  +    ++ armv7l-linux;
   
     armv8b = [ ]
       ++ armv8b-freebsd
  -    ++ armv8b-linux
  -    ;
  +    ++ armv8b-linux;
   
     armv8l = [ ]
       ++ armv8l-freebsd
  -    ++ armv8l-linux
  -    ;
  +    ++ armv8l-linux;
   
     i686 = [ ]
       ++ i686-freebsd
  -    ++ i686-linux
  -    ;
  +    ++ i686-linux;
   
     mips = [ ]
       ++ mips-freebsd
  -    ++ mips-linux
  -    ;
  +    ++ mips-linux;
   
     mipsel = [ ]
       ++ mipsel-freebsd
  -    ++ mipsel-linux
  -    ;
  +    ++ mipsel-linux;
   
     mips64 = [ ]
       ++ mips64-freebsd
  -    ++ mips64-linux
  -    ;
  +    ++ mips64-linux;
   
     mips64el = [ ]
       ++ mips64el-freebsd
  -    ++ mips64el-linux
  -    ;
  +    ++ mips64el-linux;
   
     powerpc = [ ]
       ++ powerpc-freebsd
  -    ++ powerpc-linux
  -    ;
  +    ++ powerpc-linux;
   
     powerpcle = [ ]
       ++ powerpcle-freebsd
  -    ++ powerpcle-linux
  -    ;
  +    ++ powerpcle-linux;
   
     powerpc64 = [ ]
       ++ powerpc64-freebsd
  -    ++ powerpc64-linux
  -    ;
  +    ++ powerpc64-linux;
   
     powerpc64le = [ ]
       ++ powerpc64le-linux
  -    ++ powerpc64le-linux
  -    ;
  +    ++ powerpc64le-linux;
   
     x86_64 = [ ]
       ++ x86_64-freebsd
       ++ x86_64-illumos
  -    ++ x86_64-linux
  -    ;
  +    ++ x86_64-linux;
   
     #
     ## Architecture meta attributes
  
positive.code:     ++ mips
      ++ mips64
      ++ powerpc
      ++ powerpc64
      ;
  
    little-endian = [ ]
      ++ aarch64
  
negative.code:     ++ powerpcle-freebsd
      ++ powerpc64-freebsd
      ++ powerpc64le-freebsd
      ++ x86_64-freebsd;
  
    illumos = [ ]
      ++ x86_64-illumos;
  
    linux = [ ]
      ++ aarch64-linux
  