We've got the following stanza in our `configure.ac`: ``` dnl This is a workaround for #46797 dnl (a.k.a https://github.com/rust-lang/rust/issues/46797 ). Once the dnl upstream bug is fixed, we can remove this workaround. case "$host_os" in darwin*) TOR_RUST_EXTRA_LIBS="-lresolv" ;; esac ``` It looks like https://github.com/rust-lang/rust/issues/46797 has been resolved as of 22 January 2018, so we can probably remove this workaround now! (Someone who is on MacOS should probably test this, I don't have access to any Macs right now.)