Provided by: allegro5-doc_5.0.10-2_all 

NAME
al_init - Allegro 5 API
SYNOPSIS
#include <allegro5/allegro.h>
#define al_init() (al_install_system(ALLEGRO_VERSION_INT, atexit))
DESCRIPTION
Like al_install_system(3alleg5), but automatically passes in the version and uses the atexit function
visible in the current compilation unit.
SEE ALSO
al_install_system(3alleg5)
Allegro reference manual al_init(3alleg5)()