The new Ubuntu SDK, part 3

[Update: Changed links to source code from https://launchpad.net/qtcreator-plugin-ubuntu and https://launchpad.net/ubuntu-sdk-tools to 
https://code.launchpad.net/~ubuntu-sdk-team/.... which is where the current tools probably live.]
Ubuntu SDK IDE offers custom project templates. Either CMake or qmake based.
I wonder how does the C++ compilation with CMake work in the Ubuntu SDK, so let's explore the "QML App with C++ plugin (cmake)" template. The source code for it can be seen in the qtcreator-plugin-ubuntu package. It includes all the parts required for a click package, wrapped in CMake:

The new Ubuntu SDK, part 2

[Update: Changed links to source code from https://launchpad.net/qtcreator-plugin-ubuntu and https://launchpad.net/ubuntu-sdk-tools to 
https://code.launchpad.net/~ubuntu-sdk-team/.... which is where the current tools probably live.]

Continuing from part 1, which shows how to use the current Ubuntu SDK from the command line, let's have a look at how does the build from the SDK IDE (rebranded Qt Creator) work.
There are two relevant packages:

• qtcreator-plugin-ubuntu - implements the custom Ubuntu SDK plugin for QtCreator
• ubuntu-sdk-tools - implements some tools that are used by the Ubuntu SDK plugin

The new Ubuntu SDK, part 1

[Update: Changed links to source code from https://launchpad.net/qtcreator-plugin-ubuntu and https://launchpad.net/ubuntu-sdk-tools to 
https://code.launchpad.net/~ubuntu-sdk-team/.... which is where the current tools probably live.]

In September of 2016 Canonical released an updated version of the Ubuntu SDK. The main change there was a move from the schroot-based build images (kits) to LXD-based images as can be read in the announcement. Some more details are mentioned in the beta announcement. But that's about all I found about this change.

Luckily, there are some other places where one can see how does the new SDK work and how to use it from the command line:

• There is a tool called clickable that supports using the new LXD-based SDK to build click packages.
• Sources of ubuntu-sdk-ide and ubuntu-sdk-tools which implement the Ubuntu SDK functionality.