Hi, I know whats wrong and why it didnt happened to me!
1) SDL_mixer loads libs like ogg/vorbis using SDL's loadso functions.
These functions try to find libs like ogg in path. Since libbogg isnt
in path when building it using Alien::SDL, it cant find it.
2) It worked on my box because I had the same lib (with exactly the
same name, libvorbis.so.3) in my LD_LIBRARY_PATH, thats why it found
the lib.
What we have to do (tested):
1) add these libs to Alien::SDL::ConfigData
2) tell SDL that it has to load these libs using Dynaloader, so
SDL_mixer dont need to search for it or even load it.
I'll apply patches later.