With bullet-2.81-1.fc18.x68_64, I'm trying to patch supertuxkart 0.8 to use system bullet rather than the bundled version.  Once patched, I get:

[  4%] Building CXX object CMakeFiles/supertuxkart.dir/src/animations/three_d_animation.cpp.o
/usr/bin/c++   -DENABLE_BIDI -DHAVE_OGGVORBIS -DNDEBUG -DSUPERTUXKART_DATADIR=\"/usr/share/supertuxkart\" -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4  -m64 -mtune=generic  -O2 -DNDEBUG -I/home/limb/fedora/git/supertuxkart/SuperTuxKart-0.8/src -I/usr/include/AL -I/home/limb/fedora/git/supertuxkart/SuperTuxKart-0.8/lib/irrlicht/include    -Wall -o CMakeFiles/supertuxkart.dir/src/animations/three_d_animation.cpp.o -c /home/limb/fedora/git/supertuxkart/SuperTuxKart-0.8/src/animations/three_d_animation.cpp
In file included from /usr/include/bullet/btBulletCollisionCommon.h:22:0,
                 from /usr/include/bullet/btBulletDynamicsCommon.h:20,
                 from /home/limb/fedora/git/supertuxkart/SuperTuxKart-0.8/src/animations/three_d_animation.hpp:27,
                 from /home/limb/fedora/git/supertuxkart/SuperTuxKart-0.8/src/animations/three_d_animation.cpp:19:
/usr/include/bullet/BulletCollision/CollisionDispatch/btCollisionWorld.h:74:34: fatal error: LinearMath/btVector3.h: No such file or directory
compilation terminated.

Which seems to indicate that the file in bullet can't find the second file in bullet.