message: Only run the multi-process table tests when mpi is enabled.
diff: # accompanying file Copyright.txt for details.
  #------------------------------------------------------------------------------#
  -if(ADIOS2_HAVE_Table)
  - gtest_add_tests_helper(MultiRank "${ADIOS2_HAVE_MPI}" Table Engine.Table. "")
  +gtest_add_tests_helper(SingleRank FALSE Table Engine.Table. "")
  - add_executable(Test.Engine.Table.SingleRank TestTableSingleRank.cpp)
  - target_link_libraries(Test.Engine.Table.SingleRank adios2 gtest)
  if(ADIOS2_HAVE_MPI)
  - target_link_libraries(Test.Engine.Table.SingleRank MPI::MPI_C)
  - endif()
  - gtest_add_tests(TARGET Test.Engine.Table.SingleRank
  - TEST_PREFIX Engine.Table.
  - EXEC_WRAPPER
  - ${MPIEXEC_EXECUTABLE} ${MPIEXEC_EXTRA_FLAGS} ${MPIEXEC_NUMPROC_FLAG} 1
  - )
  + gtest_add_tests_helper(MultiRank "${ADIOS2_HAVE_MPI}" Table Engine.Table. "")
  endif()
  