[eibro@u58n100 eibro]$ g++ sdltest.o -o test `sdl-config --libs`
/usr/lib/libSDL.a(SDL_x11video.lo): In function `X11_Available':
SDL_x11video.lo(.text+0x1d): undefined reference to `XOpenDisplay'
SDL_x11video.lo(.text+0x2f): undefined reference to `XCloseDisplay'
/usr/lib/libSDL.a(SDL_x11video.lo): In function `create_aux_windows':
SDL_x11video.lo(.text+0x453): undefined reference to `XDestroyWindow'
SDL_x11video.lo(.text+0x4ff): undefined reference to `XCreateWindow'
SDL_x11video.lo(.text+0x528): undefined reference to `XSelectInput'
SDL_x11video.lo(.text+0x583): undefined reference to `XInternAtom'
SDL_x11video.lo(.text+0x5da): undefined reference to `XSendEvent'
SDL_x11video.lo(.text+0x5ff): undefined reference to `XGetWMHints'
SDL_x11video.lo(.text+0x61b): undefined reference to `XGetWMName'
SDL_x11video.lo(.text+0x638): undefined reference to `XGetWMIconName'
SDL_x11video.lo(.text+0x64e): undefined reference to `XDestroyWindow'
SDL_x11video.lo(.text+0x6a0): undefined reference to `XCreateWindow'
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