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C++ , FCL: Compilations Issues with Simple Collision Geometry

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I am using Ubuntu 14.04 / Indigo and the latest FCL clone from the repo With the following includes: #include #include #include #include #include I am trying to create a simple Box: Box box0( ); // Parens shouldn't be the correct way to invoke this in C++ Throws no error, but when I Vec3f boxDims{ 1,1,1 }; Box box0{ boxDims }; or Box box0{ }; // I would expect the constructor to be invoked with curly braces in C++? The following errors happen: CMakeFiles/marker_move.dir/src/mrkr_move.cpp.o: In function `fcl::CollisionGeometry::CollisionGeometry()': mrkr_move.cpp:(.text._ZN3fcl17CollisionGeometryC2Ev[_ZN3fcl17CollisionGeometryC5Ev]+0x33): undefined reference to `fcl::AABB::AABB()' CMakeFiles/marker_move.dir/src/mrkr_move.cpp.o: In function `fcl::Box::Box(fcl::Vec3fX> const&)': mrkr_move.cpp:(.text._ZN3fcl3BoxC2ERKNS_6Vec3fXINS_7details8Vec3DataIdEEEE[_ZN3fcl3BoxC5ERKNS_6Vec3fXINS_7details8Vec3DataIdEEEE]+0x23): undefined reference to `vtable for fcl::Box' CMakeFiles/marker_move.dir/src/mrkr_move.cpp.o: In function `fcl::Box::~Box()': mrkr_move.cpp:(.text._ZN3fcl3BoxD2Ev[_ZN3fcl3BoxD5Ev]+0x13): undefined reference to `vtable for fcl::Box' Which seems to refer to the Box constructor. Do you know what is causing this? The same errors occur when I try to invoke the constructor with three floats as the signature. I have added `/usr/include/fcl` to the `include_directories` command within `CMakeLists.txt`, but this does not change the error. I originally built FCL with `cmake` / `make`, and used `sudo make install` as usual. Also, I cannot `find_package(FCL REQUIRED)` because I am building with catkin/ROS, and FCL is not a ROS package. Anyone else have these troubles with C++ / FCL / Ubuntu / Indigo? Thanks in advance!

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