message: Fix typo leading to a CMake logic error
diff: @@ -29,7 +29,7 @@ OPTION(OSPRAY_APPS_EXAMPLEVIEWER "Build example viewer apps" ON)
  OPTION(OSPRAY_APPS_UTILITIES "Build utility apps" ON)
  # common utilities
  -IF(OSPRAY_APPS_BENCHMARK OR OSRPAY_APPS_EXAMPLEVIEWER)
  +IF(OSPRAY_APPS_BENCHMARK OR OSPRAY_APPS_EXAMPLEVIEWER)
  ADD_SUBDIRECTORY(common/sg)
  ADD_SUBDIRECTORY(common/tfn_lib)
  ADD_SUBDIRECTORY(common/xml)
  