parsetexi/api.c: In function ‘element_to_perl_hash’:
parsetexi/api.c:429:27: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  429 |               int value = (int) f;
      |                           ^
parsetexi/input.c:16: warning: "_GNU_SOURCE" redefined
   16 | #define _GNU_SOURCE
      | 
<command-line>: note: this is the location of the previous definition
parsetexi/macro.c:16: warning: "_GNU_SOURCE" redefined
   16 | #define _GNU_SOURCE
      | 
<command-line>: note: this is the location of the previous definition
parsetexi/handle_commands.c: In function ‘handle_line_command’:
parsetexi/handle_commands.c:574:29: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
  574 |                     level = (int) k->value + 1;
      |                             ^
parsetexi/extra.c: In function ‘add_extra_integer’:
parsetexi/extra.c:151:26: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
  151 |   add_extra_key (e, key, (ELEMENT *) value, extra_integer);
      |                          ^