otblockchain uses the CMake build system. The basic steps are:
mkdir build
cd build
cmake ..
make
make install
This assumes you have opentxs installed and available on the system.
These commands will bring up otblockchain and connect to the specified chains using the specified initial peer. If an initial peer is not specified, localhost will be used.
otblockchain --btc=a.b.c.d
otblockchain --tnbch
otblockchain --bch=a.b.c.d --tnbch=e.f.g.h --btc --tnbtc i.j.k.l