How to statically link allegro5 (Linux, G++)? - c++

Question

I built the latest stable version of allegro5's source code following these steps
I have the following code (main.cpp):
#include <stdint.h>
#include <allegro5/allegro.h>
#include <allegro5/allegro_primitives.h>
int main()
{
al_init();
al_install_keyboard();
al_install_mouse();
al_init_primitives_addon();
al_set_new_display_flags(ALLEGRO_RESIZABLE);
ALLEGRO_DISPLAY* display = al_create_display(1280, 720);
al_set_window_title(display, "Allegro5 Window");
ALLEGRO_EVENT_QUEUE* queue = al_create_event_queue();
al_register_event_source(queue, al_get_display_event_source(display));
al_register_event_source(queue, al_get_keyboard_event_source());
al_register_event_source(queue, al_get_mouse_event_source());
bool running = true;
while (running)
{
ALLEGRO_EVENT ev;
while (al_get_next_event(queue, &ev))
{
if (ev.type == ALLEGRO_EVENT_DISPLAY_CLOSE)
running = false;
if (ev.type == ALLEGRO_EVENT_DISPLAY_RESIZE)
{
al_acknowledge_resize(display);
}
}
al_clear_to_color(al_map_rgba_f(0.25, 0.25, 0.25, 1));
al_flip_display();
}
al_destroy_event_queue(queue);
al_destroy_display(display);
return 0;
}
... And I am trying to build this source file using the following command:
g++ -g $(pkg-config --libs --static allegro-static-5 allegro_primitives-static-5) main.cpp -o main
Even though pkg-config detects everything, it still doesn't work. The output is:
/usr/bin/ld: /tmp/ccmxycjk.o: in function `main':
pwd/main.cpp:7: undefined reference to `al_install_system'
/usr/bin/ld: pwd/main.cpp:8: undefined reference to `al_install_keyboard'
/usr/bin/ld: pwd/main.cpp:9: undefined reference to `al_install_mouse'
/usr/bin/ld: pwd/main.cpp:10: undefined reference to `al_init_primitives_addon'
/usr/bin/ld: pwd/main.cpp:11: undefined reference to `al_set_new_display_flags'
/usr/bin/ld: pwd/main.cpp:12: undefined reference to `al_create_display'
/usr/bin/ld: pwd/main.cpp:13: undefined reference to `al_set_window_title'
/usr/bin/ld: pwd/main.cpp:14: undefined reference to `al_create_event_queue'
/usr/bin/ld: pwd/main.cpp:15: undefined reference to `al_get_display_event_source'
/usr/bin/ld: pwd/main.cpp:15: undefined reference to `al_register_event_source'
/usr/bin/ld: pwd/main.cpp:16: undefined reference to `al_get_keyboard_event_source'
/usr/bin/ld: pwd/main.cpp:16: undefined reference to `al_register_event_source'
/usr/bin/ld: pwd/main.cpp:17: undefined reference to `al_get_mouse_event_source'
/usr/bin/ld: pwd/main.cpp:17: undefined reference to `al_register_event_source'
/usr/bin/ld: pwd/main.cpp:23: undefined reference to `al_get_next_event'
/usr/bin/ld: pwd/main.cpp:29: undefined reference to `al_acknowledge_resize'
/usr/bin/ld: pwd/main.cpp:33: undefined reference to `al_map_rgba_f'
/usr/bin/ld: pwd/main.cpp:33: undefined reference to `al_clear_to_color'
/usr/bin/ld: pwd/main.cpp:34: undefined reference to `al_flip_display'
/usr/bin/ld: pwd/main.cpp:37: undefined reference to `al_destroy_event_queue'
/usr/bin/ld: pwd/main.cpp:38: undefined reference to `al_destroy_display'
OBS: PWD = project path. Running up-to-date Debian 10
I've tried compiling with '-l:', adding all the libs, etc. Nothing would work. Any ideas?

Answer 1

Before you #include <allegro5/...>, add:
#define ALLEGRO_STATICLINK
You may need to link with additional libraries used by Allegro as well, such as OpenGL32.lib (on Windows), to resolve OpenGL functions.