Quick & Easy: Compiling LFTP on Ubuntu 20.04 LTS
a simple guide to compile lftp on linux
sudo apt-get install openssl build-essential libreadline-dev libssl-dev ncurses-dev libgnutls28-dev pkg-config zlib1g-dev -y
wget http://lftp.yar.ru/ftp/$(wget -O- http://lftp.yar.ru/ftp/ | egrep -o 'lftp-[0-9\.]+.tar.gz' | sort -V | tail -1)
tar zxvf lftp-*.tar.gz && cd lftp-*
(or change to your version)./configure
(compile with with gnutls, or )./configure --without-gnutls --with-openssl
(compile with openssl)make -j$(nproc)
sudo make install