depends  sdl_image                                            &&
depends  sdl_net                                              &&
depends  sdl_sound                                            &&
depends  boost                                                &&
depends  lua                                                  &&
depends  speex                                                &&
optional_depends  OPENGL                                      \
                  "--enable-opengl"                           \
                  "--disable-opengl"                          \
                  "Do you want to use OpenGL for rendering?"
