Tested on a 2006 MacBook (Core Duo, 64 MB GMA 950, 10.6.8) using CX12rc4. On both machines, the game installed without issue and works, except for a mouse lag issue which leads to sluggish UI responsiveness (see here: http://www.gog.com/forum/eador_genesis/laggy_mouse_is_there_a_fix)
I tried reducing the values of the delays specified in Eador.cfg, but that did not help; what did help was to reduce the graphics bit-depth from the default of 32 down to 16 (24 didn't work either). The mouse acceleration still seems a bit oversensitive, but the mouse is no longer laggy at all.