If you are using PBMake for a linker that does not require the @
      symbol before the script name, you can eliminate it by using the
      LINKER_SEP= directive.

      You can use this directive to substitute a new symbol...

      LINKER_SEP=%

      ...or to eliminate the symbol:

      LINKER_SEP=NONE
        or
      LINKER_SEP=

      If you don't use the LINKER_SEP= directive, it defaults to:

      LINKER_SEP=@