Anyway, I've compiled TCOD on this brand new Xubuntu box. The last time I compiled it on Linux was months ago and I was a bit worried, but things went smoothly. Even better, this is a Celeron 466MHz with 128 MB of RAM and TCOD runs at good speed. It's just slightly slower than on recent computers.
The problem is that I have crashes in SDL internal functions after a few seconds. I also have nasty crashes in Windows, but in my own code (involving the skill and lighting systems). The beta gets nearer, but I think it's time for a painful gdb session... !