butor/blackbird installation notes

# Installing blackbird on recent debian/ubuntu
​# First, make sure git and cmake are installed:
sudo apt-get install git cmake
cmake --version # you need cmake >= 3.10

# If you have an older version, remove it and download 3.10.1 from cmake.org
sudo apt remove cmake
wget https://cmake.org/files/v3.10/cmake-3.10.1-Linux-x86_64.sh
chmod u+x cmake-3.10.1-Linux-x86_64.sh
sudo ./cmake-3.10.1-Linux-x86_64.sh
# Lastly, you need to create a symbolic link
sudo ln -s $HOME/cmake-3.10.1-Linux-x86_64/bin/* /usr/local/bin
which cmake # should give /usr/local/bin/cmake
cmake --version # should give 3.10.1

# Install blackbird and its dependencies
sudo apt-get install libssl-dev libjansson-dev libcurl4-openssl-dev libsqlite3-dev sendemail
mkdir blackbird
cd blackbird
git clone --recursive git://github.com/butor/blackbird.git .
cmake -B./build -H. -DCMAKE_BUILD_TYPE=Release
cmake --build ./build -- install

./blackbird