message: workaround for install issue with the denoiser from a v1.8.5 install
diff: @@ -53,6 +53,7 @@ set(CMAKE_THREAD_PREFER_PTHREAD TRUE)
  set(THREADS_PREFER_PTHREAD_FLAG TRUE) # for gcc6
  find_package(Threads REQUIRED)
  find_package(ospray 1.8.5 EXACT REQUIRED)
  +find_package(OpenImageDenoise)
  include(${OSPRAY_USE_FILE})
  