if [ ! -d "ta-lib" ]; then
  wget http://prdownloads.sourceforge.net/ta-lib/ta-lib-0.4.0-src.tar.gz
  tar zxvf ta-lib-0.4.0-src.tar.gz
  cd ta-lib && ./configure && make && sudo make install && cd ..
else
  echo "TA-lib already installed, skipping download and build."
  cd ta-lib && sudo make install && cd ..
fi