message: Windows MUST use a 64-bit build...
diff: @@ -26,7 +26,7 @@ set BASELINE_DIR=build\regression_tests\baseline\
  set PATH=%PATH%;%OSP_LIBS%;%embree_DIR%\bin
  cd build
  -cmake ^
  +cmake -G "Visual Studio 15 2017 Win64" ^
  -D OSPRAY_ENABLE_TESTING=ON ^
  ..
  