On OSX (though I think I've seen the same on Linux), I configure with sdl and get this:
checking whether sdl support is requested... yes checking for pkgconfig support for sdl... no checking for sdl-config... /opt/local/bin/sdl-config checking how to determine SDL_CFLAGS... /opt/local/bin/sdl-config checking SDL.h usability... yes checking SDL.h presence... yes checking for SDL.h... yes checking how to determine SDL_LIBS... /opt/local/bin/sdl-config checking for SDL_Init in -lSDL... yes Looks good -- but the summary shows it's not included: libmpeg2 yes libpostproc no freetype2 yes lame yes xvid yes x264 yes ogg yes vorbis yes theora yes libdvdread yes pvm3 no libdv yes libquicktime no lzo no a52 yes faac yes libxml2 yes mjpegtools no sdl no imagemagick yes libjpeg yes bsdav no iconv yes Dave
