In ticket pyldap/pyldap#123 a user was not able to compile pyldap on Debian because of missing dependencies. We should document how to install dependencies:

• Fedora: dnf install "@C Development Tools and Libraries" openldap-devel cyrus-sasl-devel openssl-devel
• Debian/Ubuntu: apt-get install build-essential libldap2-dev libsasl2-dev libssl-dev