|`-DCHECK_SIBLING=0`|Don't check sibling glue in `named-checkzone`|
|`-DCHECK_LOCAL=0`|Don't check out-of-zone addresses in `named-checkzone`|
|`-DNS_RUN_PID_DIR=0`|Create default PID files in `${localstatedir}/run` rather than `${localstatedir}/run/named/`|
|`-DNS_RPZ_MAX_ZONES=64`|Increase the maximum number of configurable response policy zones from 32 to 64; this is the highest possible setting|
|`-DISC_BUFFER_USEINLINE=0`|Disable the use of inline functions to implement the `isc_buffer` API: this reduces performance but may be useful when debugging |
|`-DISC_HEAP_CHECK`|Test heap consistency after every heap operation; used when debugging|