bind9/OPTIONS.md
Ondřej Surý d08d0d81ac
Remove internal memory filling in favor of jemalloc opt.junk
Instead of having our own implementation of memory junk filling, rely on
the jemalloc opt.junk feature (set with MALLOC_CONF="junk:true").
2025-11-27 10:40:18 +01:00

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Setting the `CPPFLAGS` environment variable before running `configure`
can be used to enable certain compile-time options that are not
explicitly defined in `configure`.
Some of these settings are:
| Setting | Description |
| ---------------------------- | -------------------------------------------------------------------------------------------------------------------------------------- |
| `-DCHECK_LOCAL=0` | Don't check out-of-zone addresses in `named-checkzone` |
| `-DCHECK_SIBLING=0` | Don't check sibling glue in `named-checkzone` |
| `-DISC_FACILITY=LOG_LOCAL0` | Change the default syslog facility for `named` |
| `-DISC_HEAP_CHECK` | Test heap consistency after every heap operation; used when debugging |
| `-DISC_MEM_TRACKLINES=0` | Don't track memory allocations by file and line number; this improves performance but makes debugging more difficult |
| `-DNAMED_RUN_PID_DIR=0` | Create default PID files in `${localstatedir}/run` rather than `${localstatedir}/run/named/` |
| `-DNS_CLIENT_DROPPORT=0` | Disable dropping queries from particular well-known ports |