3.3.6 Package Linker

• Driver

  Specifies the name of the executable of the linker. Example:

     for Driver use "g++";
    

• Required_Switches

  Specifies the minimum options to be used when invoking the linker. Those options are happened at the end of the link command so that potentially conflicting user options take precedence.

• Map_File_Option

  Specifies the option to be used when the linker is asked to produce a map file.

     for Map_File_Option use "-Wl,-Map,";
    

• Max_Command_Line_Length

  Specifies the maximum length of the command line to invoke the linker. If this maximum length is reached, a response file will be used to shorten the length of the command line. This is only taken into account when attribute Response_File_Format is specified.

     for Max_Command_Line_Length use "8000";
    

• Response_File_Format

  Specifies the format of the response file to be generated when the maximum length of the command line to invoke the linker is reached. This is only taken into account when attribute Max_Command_Line_Length is specified.

  The allowed case-insensitive values are:

  • "GNU" Used when the underlying linker is gnu ld.
  • "Object_List" Used when the response file is a list of object files, one per line.
  • "GCC_GNU" Used with recent version of gcc when the underlined linker is gnu ld.
  • "GCC_Object_List" Used with recent version of gcc when the underlying linker is not gnu ld.

     for Response_File_Format use "GCC_GNU";
    

• Response_File_Switches Specifies the option(s) that must precede the response file name when when invoking the linker. This is only taken into account when both attributes Max_Command_Line_Length and Response_File_Format are specified.

      for Response_File_Switches  use ("-Wl,-f,");