Install 389-ds-base-dev by entering the following commands in the terminal:
sudo apt update sudo apt install 389-ds-base-dev
389 Directory Server suite - development files
Based on the Lightweight Directory Access Protocol (LDAP), the 389 Directory Server is designed to manage large directories of users and resources robustly and scalably. . This package contains development headers for the core libraries of the 389 Directory Server, useful for developing plugins without having to install the server itself.