connman-dev software package provides Development files for connman, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install connman-dev
connman-dev is installed in your system.
Make ensure the connman-dev package were installed using the commands given below,
$ sudo dpkg-query -l | grep connman-dev *
You will get with connman-dev package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | Development |
| Package | connman-dev |
| Version | 1.21-1.2build2 |
| Description | Development files for connman |
| Sub Section | Devel |