joey@Tuxtop ~/supertux $ jam
...patience...
...found 1175 target(s)...
...updating 1 target(s)...
LinkApplicationFromFile supertux 
./build/i686-pc-linux-gnu/debug/src/object/floating_image.o: In function `FloatingImage':
src/object/floating_image.cpp:34: undefined reference to `GameObject::GameObject(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
src/object/floating_image.cpp:34: undefined reference to `GameObject::GameObject(std::basic_string<char, std::char_traits<char>, std::allocator<char> >)'
collect2: ld returned 1 exit status

    g++ -o supertux `cat supertux.opt`  ./build/i686-pc-linux-gnu/debug/src/squirrel/libsquirrel.a  -g3  -lSDL -lpthread -lSDL_image -lGL  -lm -lopenal  -lvorbis -lm -lvorbisfile  -logg  -lphysfs
#    g++ -o supertux -Xlinker @supertux.opt  ./build/i686-pc-linux-gnu/debug/src/squirrel/libsquirrel.a  -g3  -lSDL -lpthread -lSDL_image -lGL  -lm -lopenal  -lvorbis -lm -lvorbisfile  -logg  -lphysfs

...failed LinkApplicationFromFile supertux ...
...failed updating 1 target(s)...