Fix CMake issue when Vicon SDK is not found

RealTimeBiomechanics / rtosim

The real-time OpenSim extension (RTOSIM) is a set of libraries in C++ that wrap OpenSim APIs to enable the real-time computation of inverse kinematics and inverse dynamics.

Apache License 2.0

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Fix CMake issue when Vicon SDK is not found #2

Closed lucaTagliapietra closed 7 years ago

lucaTagliapietra commented 7 years ago

Fix compilation failure when the optional Vicon SDK is not found.