This crate is an unsafe wrapper for libunbound from NLnet Labs. libunbound is an implementation of a DNS resolver, including cache and DNSSEC validation.
libunbound depends on OpenSSL which this crate relies on rust-openssl to provide.
The following environment variables influence the build process:
UNBOUND_STATIC- If specified libunbound will be linked statically.UNBOUND_DIR - Directory in which libunbound's include and lib folders may be found.