Make libdummy a Shared library

Make libdummy a shared library to fix
MacOS ctest failure in Release mode.

test/CMakeLists.txt

@@ -35,7 +35,8 @@ set(SRC_DUMMY
   dummy/processor_tracker_feature_dummy.cpp
   dummy/processor_tracker_landmark_dummy.cpp
   )
-add_library(dummy ${SRC_DUMMY})
+add_library(dummy SHARED ${SRC_DUMMY})
+target_link_libraries(dummy ${PROJECT_NAME})
 ################# ADD YOUR TESTS BELOW ####################
 #                                                         #
 #           ==== IN ALPHABETICAL ORDER! ====              #