message: cmake: print what is being built
diff: @@ -296,6 +296,7 @@ if (ENOKI_CUDA)
  )
  target_compile_definitions(enoki-cuda PRIVATE -DENOKI_CUDA_COMPUTE_CAPABILITY=${ENOKI_CUDA_COMPUTE_CAPABILITY})
  target_link_libraries(enoki-cuda PRIVATE cuda)
  + message(STATUS "Enoki: building the CUDA backend.")
  endif()
  enoki_set_native_flags()
  @@ -317,11 +318,13 @@ if (ENOKI_AUTODIFF)
  if (ENOKI_CUDA)
  target_link_libraries(enoki-autodiff PRIVATE enoki-cuda)
  endif()
  + message(STATUS "Enoki: building the autodiff backend.")
  endif()
  if (ENOKI_PYTHON)
  set(ENOKI_PYBIND11_DIR "${CMAKE_CURRENT_SOURCE_DIR}/ext/pybind11"
  CACHE STRING "Path containing the 'pybind11' library used to compile Enoki.")
  + message(STATUS "Enoki: building the Python plugin.")
  set(CMAKE_CXX_STANDARD 17)
  add_subdirectory(${ENOKI_PYBIND11_DIR} pybind11)
  