message: Debugging appveyor
diff: @@ -545,6 +545,7 @@ target_link_libraries(mfem PUBLIC ${TPL_LIBRARIES})
  if (MINGW)
  target_link_libraries(mfem PRIVATE ws2_32)
  endif()
  +message(STATUS "TPL_INCLUDE_DIRS = ${TPL_INCLUDE_DIRS}")
  target_include_directories(mfem
  PUBLIC
  ${TPL_INCLUDE_DIRS}
  