media-libs/libsdl[joystick] is needed to build =games-rpg/egoboo-2.7.4, if not, fails to compile: input.o: In function `input_init': input.c:(.text+0xd7): undefined reference to `SDL_NumJoysticks' input.c:(.text+0xf2): undefined reference to `SDL_NumJoysticks' input.c:(.text+0x103): undefined reference to `SDL_JoystickOpen' input.c:(.text+0x126): undefined reference to `SDL_JoystickOpen' input.o: In function `input_read': input.c:(.text+0x31e): undefined reference to `SDL_JoystickUpdate' input.c:(.text+0x3fd): undefined reference to `SDL_JoystickGetAxis' input.c:(.text+0x411): undefined reference to `SDL_JoystickGetAxis' input.c:(.text+0x493): undefined reference to `SDL_JoystickNumButtons' input.c:(.text+0x4d8): undefined reference to `SDL_JoystickGetButton' collect2: ld returned 1 exit status make: *** [egoboo] Error 1
fixed.