Hello Philippe,
I succeed compilingo2em118src on ubuntu 14.04 64 bits. I add no problem except a missing include file in score.c (like you did in your old post I found later ...).
The problems I had was:
- incomplete/incorrect documentation about roms and bios path arguments
- total mess with bios CRC check: I finally force the o2flag to 1 in identify_bios()
After that, I was able to start it and play the "Glouton et voraces" (K.C. Munchkin!) game.
I am not sure to understand the problem you add with allegro: when I check the allegro installed version, it looks to be liballeg.so.4.4.2 on ubuntu 14.4 too:
$ find /usr/lib -name *alleg*
/usr/lib/x86_64-linux-gnu/allegro
/usr/lib/x86_64-linux-gnu/allegro/4.4.2/alleg-alsadigi.so
/usr/lib/x86_64-linux-gnu/allegro/4.4.2/alleg-alsamidi.so
/usr/lib/x86_64-linux-gnu/allegro/4.4.2/alleg-dga2.so
/usr/lib/x86_64-linux-gnu/libjpgalleg.so.4.4
/usr/lib/x86_64-linux-gnu/liballeg.so.4.4.2
/usr/lib/x86_64-linux-gnu/liballeg.so
/usr/lib/x86_64-linux-gnu/libjpgalleg.so.4.4.2
/usr/lib/x86_64-linux-gnu/liballeg.so.4.4
/usr/lib/x86_64-linux-gnu/pkgconfig/allegro.pc
Sylvain Maréchal
PS: not related, what a coincidence, we see us 20 years ago at Asais!