checking for ares_library_init in -lcares... no configure: error: The c-ares library libraries not found. According to upstream, the libudns dependency has been replaced by libc-ares.
fixed in tree, I'm also dropping the dep net-libs/udns, thanks for reporting this https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=3f923ae8e40a95c604621adb4a25d5f23ceb5f93 https://gitweb.gentoo.org/repo/gentoo.git/commit/?id=07e88ab5b5c76b15eb6438d2fa5ebff4cd1e0fc4 commit 3f923ae8e40a95c604621adb4a25d5f23ceb5f93 Author: Yixun Lan <dlan@gentoo.org> Date: Wed Mar 14 06:02:54 2018 +0800 net-proxy/shadowsocks-libev: fix dep add net-dns/c-ares as dependency Gentoo-Bug: 650004