if (H5_VERS_SUBRELEASE)
set (HDF5_PACKAGE_VERSION_STRING "${HDF5_PACKAGE_VERSION}-${H5_VERS_SUBRELEASE}")
else ()
if (${H5_VERS_SUBRELEASE} STREQUAL "")
set (HDF5_PACKAGE_VERSION_STRING "${HDF5_PACKAGE_VERSION}")
else ()
set (HDF5_PACKAGE_VERSION_STRING "${HDF5_PACKAGE_VERSION}-${H5_VERS_SUBRELEASE}")
endif ()