message: Horrible hack.
diff: @@ -17,7 +17,7 @@ set(PROTO_DEFNS proto/voxblox/Block.proto
  proto/voxblox/Layer.proto)
  PROTOBUF_GENERATE_CPP(PROTO_SRCS PROTO_HDRS ${PROTO_DEFNS})
  -message("-- Protobuf libraries = " ${PROTOBUF_LIBRARIES})
  +# Horrible hack to fix mac mini build.
  if (${CMAKE_SYSTEM_NAME} MATCHES "Darwin")
  set(ADDITIONAL_LIBRARIES ${PROTOBUF_LIBRARIES})
  else()
  @@ -66,4 +66,5 @@ target_link_libraries(test_protobuf ${PROJECT_NAME} ${catkin_LIBRARIES})
  ##########
  cs_install()
  cs_export(INCLUDE_DIRS include ${CMAKE_CURRENT_BINARY_DIR}
  - CFG_EXTRAS voxblox-extras.cmake)
  + CFG_EXTRAS voxblox-extras.cmake
  + LIBRARIES ${ADDITIONAL_LIBRARIES})
  