Install RocksDB on Ubuntu 20.04 (Focal Fossa)

rocksdb-install.sh

# install dependencies, create temp dir
sudo apt-get install -y libgflags-dev libsnappy-dev zlib1g-dev libbz2-dev liblz4-dev libzstd-dev
pushd /tmp

# clone & checkout
git clone https://github.com/facebook/rocksdb.git && cd rocksdb
git checkout v7.4.5

# install production mode
export CXXFLAGS='-Wno-error=deprecated-copy -Wno-error=pessimizing-move -Wno-error=class-memaccess'
sudo make shared_lib
sudo make install-shared INSTALL_PATH=/usr

# clean temp
popd
rm -rf /tmp/rocksdb

# export env vars
sudo echo "export LD_LIBRARY_PATH=/usr/local/lib" >> $HOME/.bashrc
source $HOME/.bashrc