anchor.diff:  set CXX=..\build64_stage0\bin\clang-cl
   cmake -GNinja %cmake_flags% ..\llvm || exit /b
   ninja all || exit /b
  -ninja check || exit /b
  -ninja check-clang || exit /b
  +ninja check || ninja check || ninja check || exit /b
  +ninja check-clang || ninja check-clang || ninja check-clang ||  exit /b
   ninja package || exit /b
   cd ..
  
positive.code: cd build32_stage0
  cmake -GNinja %cmake_flags% ..\llvm || exit /b
  ninja all || exit /b
  ninja check || exit /b
  ninja check-clang || exit /b
  cd..
  
  mkdir build32
  
negative.code: cd build64_stage0
  cmake -GNinja %cmake_flags%  ..\llvm || exit /b
  ninja all || exit /b
  ninja check || ninja check || ninja check || exit /b
  ninja check-clang || ninja check-clang || ninja check-clang ||  exit /b
  cd..
  
  mkdir build64
  