message: Cmake logical operator giving errors.
diff: @@ -16,7 +16,7 @@ add_executable(ospStudio
  TimeSeriesWindow.cpp
  AnimationManager.cpp
  - $<$<BOOL:USE_BENCHMARK>:Benchmark.cpp>
  + $<$<BOOL:${USE_BENCHMARK}>:Benchmark.cpp>
  ${OSPRAY_STUDIO_RESOURCE_FILE}
  )
  @@ -66,7 +66,7 @@ target_link_libraries(ospStudio
  ospray_sg
  json
  cli11
  - $<$<BOOL:USE_BENCHMARK>:benchmark::benchmark>
  + $<$<BOOL:${USE_BENCHMARK}>:benchmark::benchmark>
  )
  _target_strip_and_sign(ospStudio)
  