If anybody wants to mine Yenten on MacOS / OS X, and you're having difficulties running or compiling minderd or cpuminer-opt, its possible to use Docker (its an application container platform) to run a miner on MacOS without having to compile anything at all:
Just download Docker CE from
https://www.docker.com/community-edition and get it running on your mac.
Then run in the terminal
docker run --rm first087/cpuminer-opt -a yescryptr16 -o stratum+tcp://yenten.bluepool.info:3001 -u Yentenadress
In this example I use bluepool, but of course you can replace it with any pool you like.