check_c_source_compiles(
  "
  #include <exodusII_par.h>
  #if !NC_HAS_HDF5
  #error Missing hdf5
  #elif !NC_HAS_PNETCDF
  #error Missing pnetcdf
  #endif
  int main()
  {
    return 0;
  }
  "
  PARALLEL_EXODUS_SUPPORTED
  )