message: Add cmake's processor count for parallel build job
diff: @@ -6,6 +6,12 @@ cmake_minimum_required(VERSION 3.15)
  project(ospray_studio VERSION 0.8.0 LANGUAGES CXX)
  include(GNUInstallDirs)
  +include(ProcessorCount)
  +
  +ProcessorCount(PROCESSOR_COUNT)
  +set(NUM_BUILD_JOBS ${PROCESSOR_COUNT} CACHE STRING "Number of build jobs '-j <n>'")
  +
  +set(DEFAULT_BUILD_COMMAND cmake --build . --config release -j ${NUM_BUILD_JOBS})
  set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
  set(CMAKE_ARCHIVE_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR})
  