Allegro 5 api
#include <allegro5/allegro.h> ALLEGRO_CONFIG *al_merge_config(const ALLEGRO_CONFIG *cfg1, const ALLEGRO_CONFIG *cfg2)
Merge two configuration structures, and return the result as a new configuration. Values in configuration \[aq]cfg2\[aq] override those in \[aq]cfg1\[aq]. Neither of the input configuration structures are modified. Comments from \[aq]cfg2\[aq] are not retained.
al_merge_config_into(3alleg5)