The SDL client looks for its themes in the "gui-sdl" subdirectory within any of the Freeciv theme directories. If you have the current cvs version of SDL (or >= 1.2.6), uncomment the #define SDL_CVS line (36) from gui-sdl/mapview.c If your CPU has MMX1 registers then goto gui-sdl/graphics.h line 31 and #define HAVE_MMX1 If you want report a drawing bug in SDLClient then please attach your screen bits per pixel coding.