allow system zlib when building hdf5
allow system zlib to be used when building hdf5
this avoids twice-defined ZLIB::ZLIB errors
If there's still errors, recommend manually specifying to build HDF5:
cmake -B build -Dhdf5_external=on
allow system zlib to be used when building hdf5
this avoids twice-defined ZLIB::ZLIB errors
If there's still errors, recommend manually specifying to build HDF5:
cmake -B build -Dhdf5_external=on