al_set_exe_name - Allegro 5 API

       This  override  the  executable  name  used by al_get_standard_path(3alleg5) for ALLEGRO_EXENAME_PATH and
       ALLEGRO_RESOURCES_PATH.

       One possibility where changing this can be useful is if you use the Python wrapper.  Allegro  would  then
       by  default  think  that the system’s Python executable is the current executable - but you can set it to
       the .py file being executed instead.

       al_set_exe_name - Allegro 5 API

al_get_standard_path(3alleg5)

Allegro reference manual                                                                al_set_exe_name(3alleg5)

       5.0.6, 5.1.0

              #include <allegro5/allegro.h>

              void al_set_exe_name(char const *path)