[Geomagic] Update GeomagicDriver.cpp to fire error when hd.h is not f…

…ound (sofa-framework#4576)

* Update GeomagicDriver.cpp to fire error when hd.h is not found

* Rephrase for users

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Co-authored-by: Alex Bilger <alxbilger@users.noreply.github.com>

applications/plugins/Geomagic/src/Geomagic/GeomagicDriver.cpp

@@ -346,6 +346,7 @@ void GeomagicDriver::initDevice()
     updatePosition();
     sofa::core::objectmodel::BaseObject::d_componentState.setValue(sofa::core::objectmodel::ComponentState::Valid);
 #else
+    msg_error() << "GeomagicDriver initialization failed because the Geomagic plugin was built without OpenHaptics (HD/hd.h). If you build the plugin yourself, install OpenHaptics and specify OpenHaptics_DIR at CMake configure stage.";
     sofa::core::objectmodel::BaseObject::d_componentState.setValue(sofa::core::objectmodel::ComponentState::Invalid);
 #endif
 }