Arch Linux

Description:
Arch's allegro package does not depend on Arch's dumb package, not even optionally. The small example program (at end of this issue report) compiles, runs, but returns immediately without playing music.

I've worked upstream with DUMB and Allegro throughout September 2017 to enable tracked music playback in Allegro 5 through DUMB 2.0. DUMB 2.0 is a standard dependency during Allegro 5's build system; if DUMB is not found, Allegro 5 warns and disables tracked music support. Finding DUMB is the expected standard.

I've tested a manually compiled Allegro 5.2.3 (pull from https://github.com/liballeg/allegro5/tree/5.2.3.0) with Arch's DUMB package. This gives the expected result (A5 finds DUMB and plays music).

Expected instead:
When I install Allegro 5 via Arch, the example program plays music from a given .mod/.xm/.it file.

Additional info:
allegro 5.2.3-1
dumb 2.0.2-1

Steps to reproduce:
pacman -Syyu
pacman -S dumb
pacman -S allegro
Download example music file: https://ptpb.pw/kQkW
Build the example program below, see its comment for build instruction.
Run the example program on the downloaded music file.

Example program:
/*
* Example player using Allegro 5 and DUMB 0.9.3 or 2.0.
*
* Build with: gcc -lallegro -lallegro_audio -lallegro_acodec
* When running the binary, pass a module file as command-line argument.
*/

#include <allegro5/allegro.h>
#include <allegro5/allegro_audio.h>
#include <allegro5/allegro_acodec.h>
#include <stdio.h>

int main(int argc, const char** argv)
{
al_init();
al_install_audio();
al_init_acodec_addon();
al_reserve_samples(1);

if (argc < 2) {
printf("No module file given.\n");
return 1;
}

ALLEGRO_AUDIO_STREAM* stream = al_load_audio_stream(argv[1], 3, 521);
if (stream) {
al_attach_audio_stream_to_mixer(stream, al_get_default_mixer());
while(al_get_audio_stream_playing(stream))
al_rest(0.5);
}
}