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ok, will investigate. Is the "right" boost library anything more complicated than the most up-to-date one?

Using boost v1.57.0 should be fine, although I think next release of Steem might require upgraded boost library...

wget http://downloads.sourceforge.net/project/boost/boost/1.57.0/boost_1_57_0.tar.bz2
tar xvjf ./boost_1_57_0.tar.bz2
./bootstrap.sh --prefix=/opt/boost_1_57_0
sudo ./b2
sudo ./b2 install
export BOOST_ROOT=/opt/boost_1_57_0
cmake -DBOOST_ROOT="$BOOST_ROOT" -DCMAKE_BUILD_TYPE=Release .

Thanks. I had boost 1.58.0 already, but built 1.60.0 just to be safe. Same error. I'm going to try building on a clean Ubuntu 16.04 install on a VM and see if that works; there must be some other software I put on my machine that's messing it up.

Yes. If you do a search for how to be a witness or mining it should turn up.

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