--export-dynamic
           When creating a dynamically linked executable, add all symbols to the dynamic  symbol  ta-
           ble.   The  dynamic  symbol  table  is  the  set of symbols which are visible from dynamic
           objects at run time.

           If you do not use this option, the dynamic symbol table will normally contain  only  those
           symbols which are referenced by some dynamic object mentioned in the link.

           If  you  use  "dlopen"  to  load a dynamic object which needs to refer back to the symbols
           defined by the program, rather than some other dynamic object, then you will probably need
           to use this option when linking the program itself.

           You can also use the version script to control what symbols should be added to the dynamic
           symbol table if the output format supports it.  See the description of --version-script in
           @ref{VERSION}.