/tmp/freyja_0.9.5 $ cd libhel && sh autogen.sh && make
Making deps...In file included from ./hel/CollisionObject.h:30,
                 from ./hel/Simulation.h:35,
                 from hel/Spring.h:44,
                 from hel/Spring.cpp:22:
./hel/Mass.h:31:22: error: hel/Vec3.h: No such file or directory
In file included from hel/CollisionObject.h:30,
                 from hel/CollisionObject.cpp:22:
./hel/Mass.h:31:22: error: hel/Vec3.h: No such file or directory
In file included from hel/Mass.cpp:22:
hel/Mass.h:31:22: error: hel/Vec3.h: No such file or directory
In file included from hel/Mat22.h:23,
                 from hel/Mat44.cpp:27:
./hel/Quat.h:36:22: error: hel/Vec3.h: No such file or directory
In file included from hel/Mat44.cpp:27:
hel/Mat22.h:24:22: error: hel/Vec3.h: No such file or directory
In file included from ./hel/Mat44.h:29,
                 from hel/libhel.cpp:4:
./hel/Quat.h:36:22: error: hel/Vec3.h: No such file or directory
In file included from ./hel/CollisionObject.h:30,
                 from hel/Simulation.h:35,
                 from hel/Simulation.cpp:22:
./hel/Mass.h:31:22: error: hel/Vec3.h: No such file or directory
In file included from hel/Quat.cpp:24:
hel/Quat.h:36:22: error: hel/Vec3.h: No such file or directory
In file included from ./hel/Mat44.h:29,
                 from hel/ViewVolume.h:29,
                 from hel/ViewVolume.cpp:25:
./hel/Quat.h:36:22: error: hel/Vec3.h: No such file or directory
In file included from hel/Ray.cpp:24:
hel/Ray.h:29:22: error: hel/Vec3.h: No such file or directory
In file included from ./hel/Mat44.h:29,
                 from ./hel/BoundingVolume.h:31,
                 from hel/Entity.h:30,
                 from hel/Entity.cpp:22:
./hel/Quat.h:36:22: error: hel/Vec3.h: No such file or directory
In file included from hel/Entity.cpp:22:
hel/Entity.h:33:22: error: hel/Vec3.h: No such file or directory
In file included from ./hel/Mat44.h:29,
                 from hel/BoundingVolume.h:31,
                 from hel/BoundingVolume.cpp:23:
./hel/Quat.h:36:22: error: hel/Vec3.h: No such file or directory
       [done]
depend:5: *** missing separator.  Stop.