liblinearmath2.81 2.81-rev2613+dfsg2-1 (amd64 binary) in ubuntu trusty

 Bullet professional 3D Game Multiphysics Library provides state of the art
 collision detection, soft body and rigid body dynamics.
 .
 This package contains the LinearMath shared library which is required by most
 other Bullet libraries and provides basic data types and memory management.
 .
 For more information about Bullet, please refer to the libbullet-dev package.