Matthias, I've had a look at this and it seems to me it's a compiler bug. My reasoning is as follows:
Looking at the first error: tetris.c:(.text+0x43d): undefined reference to `refresh_screen' refresh_screen is indeed used, however it's defined in sdl.h which is included into tetris.c by the include of ltris.h. However sdl.h contains the typical #ifndef SDL_H #define SDL_H constructs, unfortunately before sdl.h gets included SDL.h (note the upper-case) gets included by ltris.h. SDL.h has a similar construct: #ifndef _SDL_H #define _SDL_H It would appear that the compiler is getting confused between the two. If you have more info that shows another reason then please let me know. Colin -- Colin Tuckley | +44(0)1223 830814 | PGP/GnuPG Key Id Debian Developer | +44(0)7799 143369 | 0x38C9D903 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org
